From ed43233be910bbc8b9da3d61aa1b931843d1b44e Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:39:39 +0000 Subject: xfs: Remove the macro XFS_BUF_BFLAGS Remove the definition of the macro XFS_BUF_BFLAGS and its usage. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.c | 2 +- fs/xfs/linux-2.6/xfs_buf.h | 1 - fs/xfs/xfs_trans_buf.c | 2 +- 3 files changed, 2 insertions(+), 3 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index b2b411985591..969fd151024c 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -1094,7 +1094,7 @@ STATIC int xfs_bioerror_relse( struct xfs_buf *bp) { - int64_t fl = XFS_BUF_BFLAGS(bp); + int64_t fl = bp->b_flags; /* * No need to wait until the buffer is unpinned. * We aren't flushing it. diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 6a83b46b4bcf..6b6c25ff4ead 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -232,7 +232,6 @@ extern void xfs_buf_terminate(void); ({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; }) -#define XFS_BUF_BFLAGS(bp) ((bp)->b_flags) #define XFS_BUF_ZEROFLAGS(bp) \ ((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI| \ XBF_SYNCIO|XBF_FUA|XBF_FLUSH)) diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 15584fc3ed7d..1bc04d4e7eb1 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -430,7 +430,7 @@ shutdown_abort: if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp)) xfs_notice(mp, "about to pop assert, bp == 0x%p", bp); #endif - ASSERT((XFS_BUF_BFLAGS(bp) & (XBF_STALE|XBF_DELWRI)) != + ASSERT((bp->b_flags & (XBF_STALE|XBF_DELWRI)) != (XBF_STALE|XBF_DELWRI)); trace_xfs_trans_read_buf_shut(bp, _RET_IP_); -- cgit v1.2.3 From 5a52c2a581cddcb676a54a95d99cd39f5577c33b Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:39:51 +0000 Subject: xfs: Remove the macro XFS_BUF_ERROR and family Remove the definitions and usage of the macros XFS_BUF_ERROR, XFS_BUF_GETERROR and XFS_BUF_ISERROR. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.c | 6 +++--- fs/xfs/linux-2.6/xfs_buf.h | 4 ---- fs/xfs/quota/xfs_dquot.c | 2 +- fs/xfs/xfs_alloc.c | 7 +++---- fs/xfs/xfs_attr.c | 3 +-- fs/xfs/xfs_btree.c | 17 ++++++----------- fs/xfs/xfs_buf_item.c | 4 ++-- fs/xfs/xfs_da_btree.c | 2 +- fs/xfs/xfs_ialloc.c | 5 ++--- fs/xfs/xfs_inode.c | 2 +- fs/xfs/xfs_log.c | 4 ++-- fs/xfs/xfs_log_recover.c | 12 +++++------- fs/xfs/xfs_rtalloc.c | 2 +- fs/xfs/xfs_rw.c | 6 +++--- fs/xfs/xfs_trans_buf.c | 15 +++++++-------- fs/xfs/xfs_vnodeops.c | 4 ++-- 16 files changed, 40 insertions(+), 55 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 969fd151024c..704418a04991 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -596,7 +596,7 @@ _xfs_buf_read( bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD); status = xfs_buf_iorequest(bp); - if (status || XFS_BUF_ISERROR(bp) || (flags & XBF_ASYNC)) + if (status || bp->b_error || (flags & XBF_ASYNC)) return status; return xfs_buf_iowait(bp); } @@ -1069,7 +1069,7 @@ xfs_bioerror( /* * No need to wait until the buffer is unpinned, we aren't flushing it. */ - XFS_BUF_ERROR(bp, EIO); + xfs_buf_ioerror(bp, EIO); /* * We're calling xfs_buf_ioend, so delete XBF_DONE flag. @@ -1115,7 +1115,7 @@ xfs_bioerror_relse( * There's no reason to mark error for * ASYNC buffers. */ - XFS_BUF_ERROR(bp, EIO); + xfs_buf_ioerror(bp, EIO); XFS_BUF_FINISH_IOWAIT(bp); } else { xfs_buf_relse(bp); diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 6b6c25ff4ead..08a15c25484b 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -250,10 +250,6 @@ void xfs_buf_stale(struct xfs_buf *bp); #define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp) #define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI) -#define XFS_BUF_ERROR(bp,no) xfs_buf_ioerror(bp,no) -#define XFS_BUF_GETERROR(bp) xfs_buf_geterror(bp) -#define XFS_BUF_ISERROR(bp) (xfs_buf_geterror(bp) ? 1 : 0) - #define XFS_BUF_DONE(bp) ((bp)->b_flags |= XBF_DONE) #define XFS_BUF_UNDONE(bp) ((bp)->b_flags &= ~XBF_DONE) #define XFS_BUF_ISDONE(bp) ((bp)->b_flags & XBF_DONE) diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c index 837f31158d43..784019d4a576 100644 --- a/fs/xfs/quota/xfs_dquot.c +++ b/fs/xfs/quota/xfs_dquot.c @@ -403,7 +403,7 @@ xfs_qm_dqalloc( dqp->q_blkno, mp->m_quotainfo->qi_dqchunklen, 0); - if (!bp || (error = XFS_BUF_GETERROR(bp))) + if (!bp || (error = xfs_buf_geterror(bp))) goto error1; /* * Make a chunk of dquots out of this buffer and log diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index 1e00b3ef6274..bdd9cb54d63b 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -451,8 +451,7 @@ xfs_alloc_read_agfl( XFS_FSS_TO_BB(mp, 1), 0, &bp); if (error) return error; - ASSERT(bp); - ASSERT(!XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); XFS_BUF_SET_VTYPE_REF(bp, B_FS_AGFL, XFS_AGFL_REF); *bpp = bp; return 0; @@ -2116,7 +2115,7 @@ xfs_read_agf( if (!*bpp) return 0; - ASSERT(!XFS_BUF_GETERROR(*bpp)); + ASSERT(!(*bpp)->b_error); agf = XFS_BUF_TO_AGF(*bpp); /* @@ -2168,7 +2167,7 @@ xfs_alloc_read_agf( return error; if (!*bpp) return 0; - ASSERT(!XFS_BUF_GETERROR(*bpp)); + ASSERT(!(*bpp)->b_error); agf = XFS_BUF_TO_AGF(*bpp); pag = xfs_perag_get(mp, agno); diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c index cbae424fe1ba..160bcdc34a6e 100644 --- a/fs/xfs/xfs_attr.c +++ b/fs/xfs/xfs_attr.c @@ -2121,8 +2121,7 @@ xfs_attr_rmtval_set(xfs_da_args_t *args) bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt, XBF_LOCK | XBF_DONT_BLOCK); - ASSERT(bp); - ASSERT(!XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen : XFS_BUF_SIZE(bp); diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index cabf4b5604aa..2b9fd385e27d 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -275,8 +275,7 @@ xfs_btree_dup_cursor( return error; } new->bc_bufs[i] = bp; - ASSERT(bp); - ASSERT(!XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); } else new->bc_bufs[i] = NULL; } @@ -467,8 +466,7 @@ xfs_btree_get_bufl( ASSERT(fsbno != NULLFSBLOCK); d = XFS_FSB_TO_DADDR(mp, fsbno); bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); - ASSERT(bp); - ASSERT(!XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); return bp; } @@ -491,8 +489,7 @@ xfs_btree_get_bufs( ASSERT(agbno != NULLAGBLOCK); d = XFS_AGB_TO_DADDR(mp, agno, agbno); bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); - ASSERT(bp); - ASSERT(!XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); return bp; } @@ -632,7 +629,7 @@ xfs_btree_read_bufl( mp->m_bsize, lock, &bp))) { return error; } - ASSERT(!bp || !XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); if (bp) XFS_BUF_SET_VTYPE_REF(bp, B_FS_MAP, refval); *bpp = bp; @@ -973,8 +970,7 @@ xfs_btree_get_buf_block( *bpp = xfs_trans_get_buf(cur->bc_tp, mp->m_ddev_targp, d, mp->m_bsize, flags); - ASSERT(*bpp); - ASSERT(!XFS_BUF_GETERROR(*bpp)); + ASSERT(!xfs_buf_geterror(*bpp)); *block = XFS_BUF_TO_BLOCK(*bpp); return 0; @@ -1006,8 +1002,7 @@ xfs_btree_read_buf_block( if (error) return error; - ASSERT(*bpp != NULL); - ASSERT(!XFS_BUF_GETERROR(*bpp)); + ASSERT(!xfs_buf_geterror(*bpp)); xfs_btree_set_refs(cur, *bpp); *block = XFS_BUF_TO_BLOCK(*bpp); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 88492916c3dc..38417ab46fde 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -960,7 +960,7 @@ xfs_buf_iodone_callbacks( static ulong lasttime; static xfs_buftarg_t *lasttarg; - if (likely(!XFS_BUF_GETERROR(bp))) + if (likely(!xfs_buf_geterror(bp))) goto do_callbacks; /* @@ -991,7 +991,7 @@ xfs_buf_iodone_callbacks( * around. */ if (XFS_BUF_ISASYNC(bp)) { - XFS_BUF_ERROR(bp, 0); /* errno of 0 unsets the flag */ + xfs_buf_ioerror(bp, 0); /* errno of 0 unsets the flag */ if (!XFS_BUF_ISSTALE(bp)) { XFS_BUF_DELAYWRITE(bp); diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 2925726529f8..5d9290db3d6c 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -2040,7 +2040,7 @@ xfs_da_do_buf( case 0: bp = xfs_trans_get_buf(trans, mp->m_ddev_targp, mappedbno, nmapped, 0); - error = bp ? XFS_BUF_GETERROR(bp) : XFS_ERROR(EIO); + error = bp ? bp->b_error : XFS_ERROR(EIO); break; case 1: case 2: diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index dd5628bd8d0b..9f24ec28283b 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -202,8 +202,7 @@ xfs_ialloc_inode_init( fbuf = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize * blks_per_cluster, XBF_LOCK); - ASSERT(fbuf); - ASSERT(!XFS_BUF_GETERROR(fbuf)); + ASSERT(!xfs_buf_geterror(fbuf)); /* * Initialize all inodes in this buffer and then log them. @@ -1486,7 +1485,7 @@ xfs_read_agi( if (error) return error; - ASSERT(*bpp && !XFS_BUF_GETERROR(*bpp)); + ASSERT(!xfs_buf_geterror(*bpp)); agi = XFS_BUF_TO_AGI(*bpp); /* diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 3cc21ddf9f7e..bdb47b22c6bc 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2473,7 +2473,7 @@ cluster_corrupt_out: if (bp->b_iodone) { XFS_BUF_UNDONE(bp); XFS_BUF_STALE(bp); - XFS_BUF_ERROR(bp,EIO); + xfs_buf_ioerror(bp, EIO); xfs_buf_ioend(bp, 0); } else { XFS_BUF_STALE(bp); diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 06ff8437ed8e..d1595e7ffd0c 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -878,7 +878,7 @@ xlog_iodone(xfs_buf_t *bp) /* * Race to shutdown the filesystem if we see an error. */ - if (XFS_TEST_ERROR((XFS_BUF_GETERROR(bp)), l->l_mp, + if (XFS_TEST_ERROR((xfs_buf_geterror(bp)), l->l_mp, XFS_ERRTAG_IODONE_IOERR, XFS_RANDOM_IODONE_IOERR)) { xfs_ioerror_alert("xlog_iodone", l->l_mp, bp, XFS_BUF_ADDR(bp)); XFS_BUF_STALE(bp); @@ -1248,7 +1248,7 @@ xlog_bdstrat( struct xlog_in_core *iclog = bp->b_fspriv; if (iclog->ic_state & XLOG_STATE_IOERROR) { - XFS_BUF_ERROR(bp, EIO); + xfs_buf_ioerror(bp, EIO); XFS_BUF_STALE(bp); xfs_buf_ioend(bp, 0); /* diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 8fe4206de057..a8e0827dbe74 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -360,7 +360,7 @@ STATIC void xlog_recover_iodone( struct xfs_buf *bp) { - if (XFS_BUF_GETERROR(bp)) { + if (bp->b_error) { /* * We're not going to bother about retrying * this during recovery. One strike! @@ -2135,15 +2135,14 @@ xlog_recover_buffer_pass2( bp = xfs_buf_read(mp->m_ddev_targp, buf_f->blf_blkno, buf_f->blf_len, buf_flags); - if (XFS_BUF_ISERROR(bp)) { + error = xfs_buf_geterror(bp); + if (error) { xfs_ioerror_alert("xlog_recover_do..(read#1)", mp, bp, buf_f->blf_blkno); - error = XFS_BUF_GETERROR(bp); xfs_buf_relse(bp); return error; } - error = 0; if (buf_f->blf_flags & XFS_BLF_INODE_BUF) { error = xlog_recover_do_inode_buffer(mp, item, bp, buf_f); } else if (buf_f->blf_flags & @@ -2227,14 +2226,13 @@ xlog_recover_inode_pass2( bp = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len, XBF_LOCK); - if (XFS_BUF_ISERROR(bp)) { + error = xfs_buf_geterror(bp); + if (error) { xfs_ioerror_alert("xlog_recover_do..(read#2)", mp, bp, in_f->ilf_blkno); - error = XFS_BUF_GETERROR(bp); xfs_buf_relse(bp); goto error; } - error = 0; ASSERT(in_f->ilf_fields & XFS_ILOG_CORE); dip = (xfs_dinode_t *)xfs_buf_offset(bp, in_f->ilf_boffset); diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 8f76fdff4f46..cb8132cb37ea 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -883,7 +883,7 @@ xfs_rtbuf_get( if (error) { return error; } - ASSERT(bp && !XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); *bpp = bp; return 0; } diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c index d6d6fdfe9422..d1f76f8a4c7e 100644 --- a/fs/xfs/xfs_rw.c +++ b/fs/xfs/xfs_rw.c @@ -106,7 +106,7 @@ xfs_ioerror_alert( " (\"%s\") error %d buf count %zd", XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)), (__uint64_t)blkno, func, - XFS_BUF_GETERROR(bp), XFS_BUF_COUNT(bp)); + bp->b_error, XFS_BUF_COUNT(bp)); } /* @@ -137,8 +137,8 @@ xfs_read_buf( bp = xfs_buf_read(target, blkno, len, flags); if (!bp) return XFS_ERROR(EIO); - error = XFS_BUF_GETERROR(bp); - if (bp && !error && !XFS_FORCED_SHUTDOWN(mp)) { + error = bp->b_error; + if (!error && !XFS_FORCED_SHUTDOWN(mp)) { *bpp = bp; } else { *bpp = NULL; diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 1bc04d4e7eb1..f9f1bf6ab4b8 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -194,7 +194,7 @@ xfs_trans_get_buf(xfs_trans_t *tp, return NULL; } - ASSERT(!XFS_BUF_GETERROR(bp)); + ASSERT(!bp->b_error); _xfs_trans_bjoin(tp, bp, 1); trace_xfs_trans_get_buf(bp->b_fspriv); @@ -293,10 +293,10 @@ xfs_trans_read_buf( return (flags & XBF_TRYLOCK) ? EAGAIN : XFS_ERROR(ENOMEM); - if (XFS_BUF_GETERROR(bp) != 0) { + if (bp->b_error) { + error = bp->b_error; xfs_ioerror_alert("xfs_trans_read_buf", mp, bp, blkno); - error = XFS_BUF_GETERROR(bp); xfs_buf_relse(bp); return error; } @@ -330,7 +330,7 @@ xfs_trans_read_buf( ASSERT(xfs_buf_islocked(bp)); ASSERT(bp->b_transp == tp); ASSERT(bp->b_fspriv != NULL); - ASSERT((XFS_BUF_ISERROR(bp)) == 0); + ASSERT(!bp->b_error); if (!(XFS_BUF_ISDONE(bp))) { trace_xfs_trans_read_buf_io(bp, _RET_IP_); ASSERT(!XFS_BUF_ISASYNC(bp)); @@ -386,10 +386,9 @@ xfs_trans_read_buf( return (flags & XBF_TRYLOCK) ? 0 : XFS_ERROR(ENOMEM); } - if (XFS_BUF_GETERROR(bp) != 0) { - XFS_BUF_SUPER_STALE(bp); - error = XFS_BUF_GETERROR(bp); - + if (bp->b_error) { + error = bp->b_error; + XFS_BUF_SUPER_STALE(bp); xfs_ioerror_alert("xfs_trans_read_buf", mp, bp, blkno); if (tp->t_flags & XFS_TRANS_DIRTY) diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 88d121486c52..3baebe280f10 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -83,7 +83,7 @@ xfs_readlink_bmap( bp = xfs_buf_read(mp->m_ddev_targp, d, BTOBB(byte_cnt), XBF_LOCK | XBF_MAPPED | XBF_DONT_BLOCK); - error = XFS_BUF_GETERROR(bp); + error = xfs_buf_geterror(bp); if (error) { xfs_ioerror_alert("xfs_readlink", ip->i_mount, bp, XFS_BUF_ADDR(bp)); @@ -1648,7 +1648,7 @@ xfs_symlink( byte_cnt = XFS_FSB_TO_B(mp, mval[n].br_blockcount); bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, BTOBB(byte_cnt), 0); - ASSERT(bp && !XFS_BUF_GETERROR(bp)); + ASSERT(!xfs_buf_geterror(bp)); if (pathlen < byte_cnt) { byte_cnt = pathlen; } -- cgit v1.2.3 From b75e40a4193ca027af7327ef30c31d45aa0a0e40 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:39:57 +0000 Subject: xfs: Remove macro XFS_BUF_BUSY and family Remove the definitions and uses of the macros XFS_BUF_BUSY, XFS_BUF_UNBUSY, and XFS_BUF_ISBUSY. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.c | 1 - fs/xfs/linux-2.6/xfs_buf.h | 4 ---- fs/xfs/quota/xfs_dquot.c | 4 ---- fs/xfs/xfs_buf_item.c | 2 -- fs/xfs/xfs_log.c | 4 ---- fs/xfs/xfs_log_recover.c | 2 -- fs/xfs/xfs_trans_buf.c | 9 --------- 7 files changed, 26 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 704418a04991..ae2c2e719682 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -679,7 +679,6 @@ xfs_buf_read_uncached( /* set up the buffer for a read IO */ XFS_BUF_SET_ADDR(bp, daddr); XFS_BUF_READ(bp); - XFS_BUF_BUSY(bp); xfsbdstrat(mp, bp); error = xfs_buf_iowait(bp); diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 08a15c25484b..05e744f9fe71 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -254,10 +254,6 @@ void xfs_buf_stale(struct xfs_buf *bp); #define XFS_BUF_UNDONE(bp) ((bp)->b_flags &= ~XBF_DONE) #define XFS_BUF_ISDONE(bp) ((bp)->b_flags & XBF_DONE) -#define XFS_BUF_BUSY(bp) do { } while (0) -#define XFS_BUF_UNBUSY(bp) do { } while (0) -#define XFS_BUF_ISBUSY(bp) (1) - #define XFS_BUF_ASYNC(bp) ((bp)->b_flags |= XBF_ASYNC) #define XFS_BUF_UNASYNC(bp) ((bp)->b_flags &= ~XBF_ASYNC) #define XFS_BUF_ISASYNC(bp) ((bp)->b_flags & XBF_ASYNC) diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c index 784019d4a576..0e12861bd552 100644 --- a/fs/xfs/quota/xfs_dquot.c +++ b/fs/xfs/quota/xfs_dquot.c @@ -318,7 +318,6 @@ xfs_qm_init_dquot_blk( int curid, i; ASSERT(tp); - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(xfs_buf_islocked(bp)); d = (xfs_dqblk_t *)XFS_BUF_PTR(bp); @@ -534,7 +533,6 @@ xfs_qm_dqtobp( return XFS_ERROR(error); } - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(xfs_buf_islocked(bp)); /* @@ -553,7 +551,6 @@ xfs_qm_dqtobp( xfs_trans_brelse(tp, bp); return XFS_ERROR(EIO); } - XFS_BUF_BUSY(bp); /* We dirtied this */ } *O_bpp = bp; @@ -622,7 +619,6 @@ xfs_qm_dqread( * this particular dquot was repaired. We still aren't afraid to * brelse it because we have the changes incore. */ - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(xfs_buf_islocked(bp)); xfs_trans_brelse(tp, bp); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 38417ab46fde..9e9b4a70360a 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -371,7 +371,6 @@ xfs_buf_item_pin( { struct xfs_buf_log_item *bip = BUF_ITEM(lip); - ASSERT(XFS_BUF_ISBUSY(bip->bli_buf)); ASSERT(atomic_read(&bip->bli_refcount) > 0); ASSERT((bip->bli_flags & XFS_BLI_LOGGED) || (bip->bli_flags & XFS_BLI_STALE)); @@ -895,7 +894,6 @@ xfs_buf_attach_iodone( { xfs_log_item_t *head_lip; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(xfs_buf_islocked(bp)); lip->li_cb = cb; diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index d1595e7ffd0c..64682b6f9dcb 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1051,7 +1051,6 @@ xlog_alloc_log(xfs_mount_t *mp, if (!bp) goto out_free_log; bp->b_iodone = xlog_iodone; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(xfs_buf_islocked(bp)); log->l_xbuf = bp; @@ -1108,7 +1107,6 @@ xlog_alloc_log(xfs_mount_t *mp, iclog->ic_callback_tail = &(iclog->ic_callback); iclog->ic_datap = (char *)iclog->ic_data + log->l_iclog_hsize; - ASSERT(XFS_BUF_ISBUSY(iclog->ic_bp)); ASSERT(xfs_buf_islocked(iclog->ic_bp)); init_waitqueue_head(&iclog->ic_force_wait); init_waitqueue_head(&iclog->ic_write_wait); @@ -1355,7 +1353,6 @@ xlog_sync(xlog_t *log, XFS_BUF_SET_COUNT(bp, count); bp->b_fspriv = iclog; XFS_BUF_ZEROFLAGS(bp); - XFS_BUF_BUSY(bp); XFS_BUF_ASYNC(bp); bp->b_flags |= XBF_SYNCIO; @@ -1402,7 +1399,6 @@ xlog_sync(xlog_t *log, (__psint_t)count), split); bp->b_fspriv = iclog; XFS_BUF_ZEROFLAGS(bp); - XFS_BUF_BUSY(bp); XFS_BUF_ASYNC(bp); bp->b_flags |= XBF_SYNCIO; if (log->l_mp->m_flags & XFS_MOUNT_BARRIER) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index a8e0827dbe74..4c8a892c0951 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -178,7 +178,6 @@ xlog_bread_noalign( XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no); XFS_BUF_READ(bp); - XFS_BUF_BUSY(bp); XFS_BUF_SET_COUNT(bp, BBTOB(nbblks)); XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp); @@ -266,7 +265,6 @@ xlog_bwrite( XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no); XFS_BUF_ZEROFLAGS(bp); - XFS_BUF_BUSY(bp); XFS_BUF_HOLD(bp); xfs_buf_lock(bp); XFS_BUF_SET_COUNT(bp, BBTOB(nbblks)); diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index f9f1bf6ab4b8..7dd62e26ce92 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -80,7 +80,6 @@ _xfs_trans_bjoin( { struct xfs_buf_log_item *bip; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == NULL); /* @@ -580,7 +579,6 @@ xfs_trans_bhold(xfs_trans_t *tp, { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); @@ -601,7 +599,6 @@ xfs_trans_bhold_release(xfs_trans_t *tp, { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); @@ -630,7 +627,6 @@ xfs_trans_log_buf(xfs_trans_t *tp, { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT((first <= last) && (last < XFS_BUF_COUNT(bp))); @@ -701,7 +697,6 @@ xfs_trans_binval( { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT(atomic_read(&bip->bli_refcount) > 0); @@ -773,7 +768,6 @@ xfs_trans_inode_buf( { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT(atomic_read(&bip->bli_refcount) > 0); @@ -797,7 +791,6 @@ xfs_trans_stale_inode_buf( { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT(atomic_read(&bip->bli_refcount) > 0); @@ -822,7 +815,6 @@ xfs_trans_inode_alloc_buf( { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT(atomic_read(&bip->bli_refcount) > 0); @@ -850,7 +842,6 @@ xfs_trans_dquot_buf( { xfs_buf_log_item_t *bip = bp->b_fspriv; - ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); ASSERT(type == XFS_BLF_UDQUOT_BUF || -- cgit v1.2.3 From 72790aa1192f46dedfc827c170365fd554981d15 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:04 +0000 Subject: xfs: Remove macro XFS_BUF_HOLD Remove the definition and usage of the macro XFS_BUF_HOLD Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.h | 1 - fs/xfs/xfs_buf_item.c | 2 +- fs/xfs/xfs_log_recover.c | 2 +- fs/xfs/xfs_mount.c | 2 +- 4 files changed, 3 insertions(+), 4 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 05e744f9fe71..6691a0236708 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -258,7 +258,6 @@ void xfs_buf_stale(struct xfs_buf *bp); #define XFS_BUF_UNASYNC(bp) ((bp)->b_flags &= ~XBF_ASYNC) #define XFS_BUF_ISASYNC(bp) ((bp)->b_flags & XBF_ASYNC) -#define XFS_BUF_HOLD(bp) xfs_buf_hold(bp) #define XFS_BUF_READ(bp) ((bp)->b_flags |= XBF_READ) #define XFS_BUF_UNREAD(bp) ((bp)->b_flags &= ~XBF_READ) #define XFS_BUF_ISREAD(bp) ((bp)->b_flags & XBF_READ) diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 9e9b4a70360a..a6dd497510a3 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -484,7 +484,7 @@ xfs_buf_item_trylock( return XFS_ITEM_LOCKED; /* take a reference to the buffer. */ - XFS_BUF_HOLD(bp); + xfs_buf_hold(bp); ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); trace_xfs_buf_item_trylock(bip); diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 4c8a892c0951..536eb0dd94d6 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -265,7 +265,7 @@ xlog_bwrite( XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no); XFS_BUF_ZEROFLAGS(bp); - XFS_BUF_HOLD(bp); + xfs_buf_hold(bp); xfs_buf_lock(bp); XFS_BUF_SET_COUNT(bp, BBTOB(nbblks)); XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp); diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 7f25245da289..b00c808d7d3e 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1938,7 +1938,7 @@ xfs_getsb( xfs_buf_lock(bp); } - XFS_BUF_HOLD(bp); + xfs_buf_hold(bp); ASSERT(XFS_BUF_ISDONE(bp)); return bp; } -- cgit v1.2.3 From 0095a21eb6ae8ac9f9860aa26029fe6ebbd3beeb Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:09 +0000 Subject: xfs: Remove macro XFS_BUF_SET_START Remove the definition and usage of the macro XFS_BUF_SET_START. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.h | 2 -- fs/xfs/xfs_buf_item.c | 1 - 2 files changed, 3 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 6691a0236708..4e8a6ca7f77d 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -266,8 +266,6 @@ void xfs_buf_stale(struct xfs_buf *bp); #define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) #define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) -#define XFS_BUF_SET_START(bp) do { } while (0) - #define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->b_addr) #define XFS_BUF_SET_PTR(bp, val, cnt) xfs_buf_associate_memory(bp, val, cnt) #define XFS_BUF_ADDR(bp) ((bp)->b_bn) diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index a6dd497510a3..bd4c62b055be 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -994,7 +994,6 @@ xfs_buf_iodone_callbacks( if (!XFS_BUF_ISSTALE(bp)) { XFS_BUF_DELAYWRITE(bp); XFS_BUF_DONE(bp); - XFS_BUF_SET_START(bp); } ASSERT(bp->b_iodone != NULL); trace_xfs_buf_item_iodone_async(bp, _RET_IP_); -- cgit v1.2.3 From 6292604447ade7d150f5eba3b1518e1a224fda15 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:15 +0000 Subject: xfs: Remove the macro XFS_BUF_PTR Remove the definition and usages of the macro XFS_BUF_PTR. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.c | 2 +- fs/xfs/linux-2.6/xfs_buf.h | 1 - fs/xfs/quota/xfs_dquot.c | 6 +++--- fs/xfs/quota/xfs_qm.c | 2 +- fs/xfs/xfs_ag.h | 6 +++--- fs/xfs/xfs_bmap.c | 3 +-- fs/xfs/xfs_btree.h | 2 +- fs/xfs/xfs_buf_item.c | 6 +++--- fs/xfs/xfs_da_btree.c | 10 +++++----- fs/xfs/xfs_dinode.h | 2 +- fs/xfs/xfs_log.c | 2 +- fs/xfs/xfs_log_recover.c | 10 +++++----- fs/xfs/xfs_rtalloc.c | 30 +++++++++++++++--------------- fs/xfs/xfs_rtalloc.h | 2 +- fs/xfs/xfs_sb.h | 2 +- fs/xfs/xfs_vnodeops.c | 6 +++--- 16 files changed, 45 insertions(+), 47 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index ae2c2e719682..6a42f71d08aa 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -1320,7 +1320,7 @@ xfs_buf_offset( struct page *page; if (bp->b_flags & XBF_MAPPED) - return XFS_BUF_PTR(bp) + offset; + return bp->b_addr + offset; offset += bp->b_offset; page = bp->b_pages[offset >> PAGE_SHIFT]; diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 4e8a6ca7f77d..f0aa94703cf5 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -266,7 +266,6 @@ void xfs_buf_stale(struct xfs_buf *bp); #define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) #define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) -#define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->b_addr) #define XFS_BUF_SET_PTR(bp, val, cnt) xfs_buf_associate_memory(bp, val, cnt) #define XFS_BUF_ADDR(bp) ((bp)->b_bn) #define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c index 0e12861bd552..2e0629265f67 100644 --- a/fs/xfs/quota/xfs_dquot.c +++ b/fs/xfs/quota/xfs_dquot.c @@ -320,7 +320,7 @@ xfs_qm_init_dquot_blk( ASSERT(tp); ASSERT(xfs_buf_islocked(bp)); - d = (xfs_dqblk_t *)XFS_BUF_PTR(bp); + d = bp->b_addr; /* * ID of the first dquot in the block - id's are zero based. @@ -538,7 +538,7 @@ xfs_qm_dqtobp( /* * calculate the location of the dquot inside the buffer. */ - ddq = (struct xfs_disk_dquot *)(XFS_BUF_PTR(bp) + dqp->q_bufoffset); + ddq = bp->b_addr + dqp->q_bufoffset; /* * A simple sanity check in case we got a corrupted dquot... @@ -1200,7 +1200,7 @@ xfs_qm_dqflush( /* * Calculate the location of the dquot inside the buffer. */ - ddqp = (struct xfs_disk_dquot *)(XFS_BUF_PTR(bp) + dqp->q_bufoffset); + ddqp = bp->b_addr + dqp->q_bufoffset; /* * A simple sanity check in case we got a corrupted dquot.. diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c index 46e54ad9a2dc..9a0aa76facdf 100644 --- a/fs/xfs/quota/xfs_qm.c +++ b/fs/xfs/quota/xfs_qm.c @@ -1240,7 +1240,7 @@ xfs_qm_reset_dqcounts( do_div(j, sizeof(xfs_dqblk_t)); ASSERT(mp->m_quotainfo->qi_dqperchunk == j); #endif - ddq = (xfs_disk_dquot_t *)XFS_BUF_PTR(bp); + ddq = bp->b_addr; for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { /* * Do a sanity check, and if needed, repair the dqblk. Don't diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h index 6530769a999b..4805f009f923 100644 --- a/fs/xfs/xfs_ag.h +++ b/fs/xfs/xfs_ag.h @@ -103,7 +103,7 @@ typedef struct xfs_agf { /* disk block (xfs_daddr_t) in the AG */ #define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log)) #define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp)) -#define XFS_BUF_TO_AGF(bp) ((xfs_agf_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_AGF(bp) ((xfs_agf_t *)((bp)->b_addr)) extern int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp, xfs_agnumber_t agno, int flags, struct xfs_buf **bpp); @@ -156,7 +156,7 @@ typedef struct xfs_agi { /* disk block (xfs_daddr_t) in the AG */ #define XFS_AGI_DADDR(mp) ((xfs_daddr_t)(2 << (mp)->m_sectbb_log)) #define XFS_AGI_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp)) -#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)((bp)->b_addr)) extern int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp, xfs_agnumber_t agno, struct xfs_buf **bpp); @@ -168,7 +168,7 @@ extern int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp, #define XFS_AGFL_DADDR(mp) ((xfs_daddr_t)(3 << (mp)->m_sectbb_log)) #define XFS_AGFL_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp)) #define XFS_AGFL_SIZE(mp) ((mp)->m_sb.sb_sectsize / sizeof(xfs_agblock_t)) -#define XFS_BUF_TO_AGFL(bp) ((xfs_agfl_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_AGFL(bp) ((xfs_agfl_t *)((bp)->b_addr)) typedef struct xfs_agfl { __be32 agfl_bno[1]; /* actually XFS_AGFL_SIZE(mp) */ diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index c51a3f903633..25cb2b2c427a 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -3384,8 +3384,7 @@ xfs_bmap_local_to_extents( ASSERT(args.len == 1); *firstblock = args.fsbno; bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0); - memcpy((char *)XFS_BUF_PTR(bp), ifp->if_u1.if_data, - ifp->if_bytes); + memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes); xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1); xfs_bmap_forkoff_reset(args.mp, ip, whichfork); xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h index 8d05a6a46ce3..5b240de104c0 100644 --- a/fs/xfs/xfs_btree.h +++ b/fs/xfs/xfs_btree.h @@ -262,7 +262,7 @@ typedef struct xfs_btree_cur /* * Convert from buffer to btree block header. */ -#define XFS_BUF_TO_BLOCK(bp) ((struct xfs_btree_block *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_BLOCK(bp) ((struct xfs_btree_block *)((bp)->b_addr)) /* diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index bd4c62b055be..a16c24c3a3dd 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -124,9 +124,9 @@ xfs_buf_item_log_check( bp = bip->bli_buf; ASSERT(XFS_BUF_COUNT(bp) > 0); - ASSERT(XFS_BUF_PTR(bp) != NULL); + ASSERT(bp->b_addr != NULL); orig = bip->bli_orig; - buffer = XFS_BUF_PTR(bp); + buffer = bp->b_addr; for (x = 0; x < XFS_BUF_COUNT(bp); x++) { if (orig[x] != buffer[x] && !btst(bip->bli_logged, x)) { xfs_emerg(bp->b_mount, @@ -725,7 +725,7 @@ xfs_buf_item_init( * to have logged. */ bip->bli_orig = (char *)kmem_alloc(XFS_BUF_COUNT(bp), KM_SLEEP); - memcpy(bip->bli_orig, XFS_BUF_PTR(bp), XFS_BUF_COUNT(bp)); + memcpy(bip->bli_orig, bp->b_addr, XFS_BUF_COUNT(bp)); bip->bli_logged = (char *)kmem_zalloc(XFS_BUF_COUNT(bp) / NBBY, KM_SLEEP); #endif diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 5d9290db3d6c..d56ccb709655 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -2258,7 +2258,7 @@ xfs_da_buf_make(int nbuf, xfs_buf_t **bps) dabuf->nbuf = 1; bp = bps[0]; dabuf->bbcount = (short)BTOBB(XFS_BUF_COUNT(bp)); - dabuf->data = XFS_BUF_PTR(bp); + dabuf->data = bp->b_addr; dabuf->bps[0] = bp; } else { dabuf->nbuf = nbuf; @@ -2269,7 +2269,7 @@ xfs_da_buf_make(int nbuf, xfs_buf_t **bps) dabuf->data = kmem_alloc(BBTOB(dabuf->bbcount), KM_SLEEP); for (i = off = 0; i < nbuf; i++, off += XFS_BUF_COUNT(bp)) { bp = bps[i]; - memcpy((char *)dabuf->data + off, XFS_BUF_PTR(bp), + memcpy((char *)dabuf->data + off, bp->b_addr, XFS_BUF_COUNT(bp)); } } @@ -2292,8 +2292,8 @@ xfs_da_buf_clean(xfs_dabuf_t *dabuf) for (i = off = 0; i < dabuf->nbuf; i++, off += XFS_BUF_COUNT(bp)) { bp = dabuf->bps[i]; - memcpy(XFS_BUF_PTR(bp), (char *)dabuf->data + off, - XFS_BUF_COUNT(bp)); + memcpy(bp->b_addr, dabuf->data + off, + XFS_BUF_COUNT(bp)); } } } @@ -2330,7 +2330,7 @@ xfs_da_log_buf(xfs_trans_t *tp, xfs_dabuf_t *dabuf, uint first, uint last) ASSERT(dabuf->nbuf && dabuf->data && dabuf->bbcount && dabuf->bps[0]); if (dabuf->nbuf == 1) { - ASSERT(dabuf->data == (void *)XFS_BUF_PTR(dabuf->bps[0])); + ASSERT(dabuf->data == dabuf->bps[0]->b_addr); xfs_trans_log_buf(tp, dabuf->bps[0], first, last); return; } diff --git a/fs/xfs/xfs_dinode.h b/fs/xfs/xfs_dinode.h index dffba9ba0db6..a3721633abc8 100644 --- a/fs/xfs/xfs_dinode.h +++ b/fs/xfs/xfs_dinode.h @@ -148,7 +148,7 @@ typedef enum xfs_dinode_fmt { be32_to_cpu((dip)->di_nextents) : \ be16_to_cpu((dip)->di_anextents)) -#define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)((bp)->b_addr)) /* * For block and character special files the 32bit dev_t is stored at the diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 64682b6f9dcb..3f1fa7bb9e3d 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1403,7 +1403,7 @@ xlog_sync(xlog_t *log, bp->b_flags |= XBF_SYNCIO; if (log->l_mp->m_flags & XFS_MOUNT_BARRIER) bp->b_flags |= XBF_FUA; - dptr = XFS_BUF_PTR(bp); + dptr = bp->b_addr; /* * Bump the cycle numbers at the start of each block * since this part of the buffer is at the start of diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 536eb0dd94d6..1ac295da9f17 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -147,7 +147,7 @@ xlog_align( xfs_daddr_t offset = blk_no & ((xfs_daddr_t)log->l_sectBBsize - 1); ASSERT(BBTOB(offset + nbblks) <= XFS_BUF_SIZE(bp)); - return XFS_BUF_PTR(bp) + BBTOB(offset); + return bp->b_addr + BBTOB(offset); } @@ -219,7 +219,7 @@ xlog_bread_offset( xfs_buf_t *bp, xfs_caddr_t offset) { - xfs_caddr_t orig_offset = XFS_BUF_PTR(bp); + xfs_caddr_t orig_offset = bp->b_addr; int orig_len = bp->b_buffer_length; int error, error2; @@ -1260,7 +1260,7 @@ xlog_write_log_records( */ ealign = round_down(end_block, sectbb); if (j == 0 && (start_block + endcount > ealign)) { - offset = XFS_BUF_PTR(bp) + BBTOB(ealign - start_block); + offset = bp->b_addr + BBTOB(ealign - start_block); error = xlog_bread_offset(log, ealign, sectbb, bp, offset); if (error) @@ -3433,7 +3433,7 @@ xlog_do_recovery_pass( /* * Check for header wrapping around physical end-of-log */ - offset = XFS_BUF_PTR(hbp); + offset = hbp->b_addr; split_hblks = 0; wrapped_hblks = 0; if (blk_no + hblks <= log->l_logBBsize) { @@ -3493,7 +3493,7 @@ xlog_do_recovery_pass( } else { /* This log record is split across the * physical end of log */ - offset = XFS_BUF_PTR(dbp); + offset = dbp->b_addr; split_bblks = 0; if (blk_no != log->l_logBBsize) { /* some data is before the physical diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index cb8132cb37ea..35561a511b57 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -168,7 +168,7 @@ error_cancel: xfs_trans_cancel(tp, cancelflags); goto error; } - memset(XFS_BUF_PTR(bp), 0, mp->m_sb.sb_blocksize); + memset(bp->b_addr, 0, mp->m_sb.sb_blocksize); xfs_trans_log_buf(tp, bp, 0, mp->m_sb.sb_blocksize - 1); /* * Commit the transaction. @@ -943,7 +943,7 @@ xfs_rtcheck_range( if (error) { return error; } - bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + bufp = bp->b_addr; /* * Compute the starting word's address, and starting bit. */ @@ -994,7 +994,7 @@ xfs_rtcheck_range( if (error) { return error; } - b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + b = bufp = bp->b_addr; word = 0; } else { /* @@ -1040,7 +1040,7 @@ xfs_rtcheck_range( if (error) { return error; } - b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + b = bufp = bp->b_addr; word = 0; } else { /* @@ -1158,7 +1158,7 @@ xfs_rtfind_back( if (error) { return error; } - bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + bufp = bp->b_addr; /* * Get the first word's index & point to it. */ @@ -1210,7 +1210,7 @@ xfs_rtfind_back( if (error) { return error; } - bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + bufp = bp->b_addr; word = XFS_BLOCKWMASK(mp); b = &bufp[word]; } else { @@ -1256,7 +1256,7 @@ xfs_rtfind_back( if (error) { return error; } - bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + bufp = bp->b_addr; word = XFS_BLOCKWMASK(mp); b = &bufp[word]; } else { @@ -1333,7 +1333,7 @@ xfs_rtfind_forw( if (error) { return error; } - bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + bufp = bp->b_addr; /* * Get the first word's index & point to it. */ @@ -1384,7 +1384,7 @@ xfs_rtfind_forw( if (error) { return error; } - b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + b = bufp = bp->b_addr; word = 0; } else { /* @@ -1429,7 +1429,7 @@ xfs_rtfind_forw( if (error) { return error; } - b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + b = bufp = bp->b_addr; word = 0; } else { /* @@ -1649,7 +1649,7 @@ xfs_rtmodify_range( if (error) { return error; } - bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + bufp = bp->b_addr; /* * Compute the starting word's address, and starting bit. */ @@ -1694,7 +1694,7 @@ xfs_rtmodify_range( if (error) { return error; } - first = b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + first = b = bufp = bp->b_addr; word = 0; } else { /* @@ -1734,7 +1734,7 @@ xfs_rtmodify_range( if (error) { return error; } - first = b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp); + first = b = bufp = bp->b_addr; word = 0; } else { /* @@ -1832,8 +1832,8 @@ xfs_rtmodify_summary( */ sp = XFS_SUMPTR(mp, bp, so); *sp += delta; - xfs_trans_log_buf(tp, bp, (uint)((char *)sp - (char *)XFS_BUF_PTR(bp)), - (uint)((char *)sp - (char *)XFS_BUF_PTR(bp) + sizeof(*sp) - 1)); + xfs_trans_log_buf(tp, bp, (uint)((char *)sp - (char *)bp->b_addr), + (uint)((char *)sp - (char *)bp->b_addr + sizeof(*sp) - 1)); return 0; } diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h index 09e1f4f35e97..f7f3a359c1c5 100644 --- a/fs/xfs/xfs_rtalloc.h +++ b/fs/xfs/xfs_rtalloc.h @@ -47,7 +47,7 @@ struct xfs_trans; #define XFS_SUMOFFSTOBLOCK(mp,s) \ (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog) #define XFS_SUMPTR(mp,bp,so) \ - ((xfs_suminfo_t *)((char *)XFS_BUF_PTR(bp) + \ + ((xfs_suminfo_t *)((bp)->b_addr + \ (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp)))) #define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log) diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 1eb2ba586814..cb6ae715814a 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -509,7 +509,7 @@ static inline int xfs_sb_version_hasprojid32bit(xfs_sb_t *sbp) #define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */ #define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR) -#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)((bp)->b_addr)) #define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d)) #define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \ diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 3baebe280f10..3ee5f8a2858b 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -94,7 +94,7 @@ xfs_readlink_bmap( byte_cnt = pathlen; pathlen -= byte_cnt; - memcpy(link, XFS_BUF_PTR(bp), byte_cnt); + memcpy(link, bp->b_addr, byte_cnt); xfs_buf_relse(bp); } @@ -1654,7 +1654,7 @@ xfs_symlink( } pathlen -= byte_cnt; - memcpy(XFS_BUF_PTR(bp), cur_chunk, byte_cnt); + memcpy(bp->b_addr, cur_chunk, byte_cnt); cur_chunk += byte_cnt; xfs_trans_log_buf(tp, bp, 0, byte_cnt - 1); @@ -1999,7 +1999,7 @@ xfs_zero_remaining_bytes( mp, bp, XFS_BUF_ADDR(bp)); break; } - memset(XFS_BUF_PTR(bp) + + memset(bp->b_addr + (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), 0, lastoffset - offset + 1); XFS_BUF_UNDONE(bp); -- cgit v1.2.3 From 02fe03d909f3a5876d7b4775fdbc83c07c7c3842 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:22 +0000 Subject: xfs: Remove the macro XFS_BUF_SET_PTR Remove the definition and usages of the macro XFS_BUF_SET_PTR. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.h | 1 - fs/xfs/xfs_log.c | 4 ++-- fs/xfs/xfs_log_recover.c | 4 ++-- 3 files changed, 4 insertions(+), 5 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index f0aa94703cf5..c5601e1e0f46 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -266,7 +266,6 @@ void xfs_buf_stale(struct xfs_buf *bp); #define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) #define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) -#define XFS_BUF_SET_PTR(bp, val, cnt) xfs_buf_associate_memory(bp, val, cnt) #define XFS_BUF_ADDR(bp) ((bp)->b_bn) #define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) #define XFS_BUF_OFFSET(bp) ((bp)->b_file_offset) diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 3f1fa7bb9e3d..3a8d4f66d702 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1395,8 +1395,8 @@ xlog_sync(xlog_t *log, if (split) { bp = iclog->ic_log->l_xbuf; XFS_BUF_SET_ADDR(bp, 0); /* logical 0 */ - XFS_BUF_SET_PTR(bp, (xfs_caddr_t)((__psint_t)&(iclog->ic_header)+ - (__psint_t)count), split); + xfs_buf_associate_memory(bp, + (char *)&iclog->ic_header + count, split); bp->b_fspriv = iclog; XFS_BUF_ZEROFLAGS(bp); XFS_BUF_ASYNC(bp); diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 1ac295da9f17..aaf61d5eefb9 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -223,14 +223,14 @@ xlog_bread_offset( int orig_len = bp->b_buffer_length; int error, error2; - error = XFS_BUF_SET_PTR(bp, offset, BBTOB(nbblks)); + error = xfs_buf_associate_memory(bp, offset, BBTOB(nbblks)); if (error) return error; error = xlog_bread_noalign(log, blk_no, nbblks, bp); /* must reset buffer pointer even on error */ - error2 = XFS_BUF_SET_PTR(bp, orig_offset, orig_len); + error2 = xfs_buf_associate_memory(bp, orig_offset, orig_len); if (error) return error; return error2; -- cgit v1.2.3 From 811e64c7169bb59229971c4aa3b1ed5093f44c84 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:27 +0000 Subject: Replace the macro XFS_BUF_ISPINNED with helper xfs_buf_ispinned Replace the macro XFS_BUF_ISPINNED with an inline helper function xfs_buf_ispinned, and change all its usages. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.c | 2 +- fs/xfs/linux-2.6/xfs_buf.h | 5 ++++- fs/xfs/linux-2.6/xfs_sync.c | 2 +- fs/xfs/quota/xfs_dquot.c | 4 ++-- fs/xfs/xfs_buf_item.c | 2 +- fs/xfs/xfs_inode.c | 2 +- 6 files changed, 10 insertions(+), 7 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 6a42f71d08aa..5e929f0e57f7 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -1677,7 +1677,7 @@ xfs_buf_delwri_split( list_for_each_entry_safe(bp, n, dwq, b_list) { ASSERT(bp->b_flags & XBF_DELWRI); - if (!XFS_BUF_ISPINNED(bp) && xfs_buf_trylock(bp)) { + if (!xfs_buf_ispinned(bp) && xfs_buf_trylock(bp)) { if (!force && time_before(jiffies, bp->b_queuetime + age)) { xfs_buf_unlock(bp); diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index c5601e1e0f46..f4e3de65ebe7 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -285,7 +285,10 @@ xfs_buf_set_ref( #define XFS_BUF_SET_VTYPE_REF(bp, type, ref) xfs_buf_set_ref(bp, ref) #define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) -#define XFS_BUF_ISPINNED(bp) atomic_read(&((bp)->b_pin_count)) +static inline int xfs_buf_ispinned(struct xfs_buf *bp) +{ + return atomic_read(&bp->b_pin_count); +} #define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index 5cc158e52d4c..a8500e92ae72 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -330,7 +330,7 @@ xfs_sync_fsdata( * between there and here. */ bp = xfs_getsb(mp, 0); - if (XFS_BUF_ISPINNED(bp)) + if (xfs_buf_ispinned(bp)) xfs_log_force(mp, 0); return xfs_bwrite(mp, bp); diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c index 2e0629265f67..db62959bed13 100644 --- a/fs/xfs/quota/xfs_dquot.c +++ b/fs/xfs/quota/xfs_dquot.c @@ -1236,7 +1236,7 @@ xfs_qm_dqflush( * If the buffer is pinned then push on the log so we won't * get stuck waiting in the write for too long. */ - if (XFS_BUF_ISPINNED(bp)) { + if (xfs_buf_ispinned(bp)) { trace_xfs_dqflush_force(dqp); xfs_log_force(mp, 0); } @@ -1443,7 +1443,7 @@ xfs_qm_dqflock_pushbuf_wait( goto out_lock; if (XFS_BUF_ISDELAYWRITE(bp)) { - if (XFS_BUF_ISPINNED(bp)) + if (xfs_buf_ispinned(bp)) xfs_log_force(mp, 0); xfs_buf_delwri_promote(bp); wake_up_process(bp->b_target->bt_task); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index a16c24c3a3dd..a3d2bbca26c7 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -478,7 +478,7 @@ xfs_buf_item_trylock( struct xfs_buf_log_item *bip = BUF_ITEM(lip); struct xfs_buf *bp = bip->bli_buf; - if (XFS_BUF_ISPINNED(bp)) + if (xfs_buf_ispinned(bp)) return XFS_ITEM_PINNED; if (!xfs_buf_trylock(bp)) return XFS_ITEM_LOCKED; diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index bdb47b22c6bc..76ee2c5371ca 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2585,7 +2585,7 @@ xfs_iflush( * If the buffer is pinned then push on the log now so we won't * get stuck waiting in the write for too long. */ - if (XFS_BUF_ISPINNED(bp)) + if (xfs_buf_ispinned(bp)) xfs_log_force(mp, 0); /* -- cgit v1.2.3 From e38c9b87e5b428b3e2a2e48ab0ee2b6cdc8e6208 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:33 +0000 Subject: xfs: Remove the macro XFS_BUF_SET_TARGET Remove the macro XFS_BUF_SET_TARGET. hch: As all the buffer allocator already set ->b_target it should be safe to simply remove these calls. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.h | 1 - fs/xfs/xfs_log_recover.c | 2 -- 2 files changed, 3 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index f4e3de65ebe7..6a38b2d21ea0 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -292,7 +292,6 @@ static inline int xfs_buf_ispinned(struct xfs_buf *bp) #define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); -#define XFS_BUF_SET_TARGET(bp, target) ((bp)->b_target = (target)) #define XFS_BUF_TARGET(bp) ((bp)->b_target) #define XFS_BUFTARG_NAME(target) xfs_buf_target_name(target) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index aaf61d5eefb9..93786e518d87 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -179,7 +179,6 @@ xlog_bread_noalign( XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no); XFS_BUF_READ(bp); XFS_BUF_SET_COUNT(bp, BBTOB(nbblks)); - XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp); xfsbdstrat(log->l_mp, bp); error = xfs_buf_iowait(bp); @@ -268,7 +267,6 @@ xlog_bwrite( xfs_buf_hold(bp); xfs_buf_lock(bp); XFS_BUF_SET_COUNT(bp, BBTOB(nbblks)); - XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp); if ((error = xfs_bwrite(log->l_mp, bp))) xfs_ioerror_alert("xlog_bwrite", log->l_mp, -- cgit v1.2.3 From 49074c069cd3f0f683325d0c7f8b2765dbe2e294 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:40 +0000 Subject: xfs: Remove the macro XFS_BUF_TARGET Remove the definition and usages of the macro XFS_BUF_TARGET Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.h | 1 - fs/xfs/xfs_buf_item.c | 6 +++--- fs/xfs/xfs_mount.c | 2 +- fs/xfs/xfs_rw.c | 2 +- fs/xfs/xfs_trans_buf.c | 2 +- 5 files changed, 6 insertions(+), 7 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 6a38b2d21ea0..4b304990a799 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -292,7 +292,6 @@ static inline int xfs_buf_ispinned(struct xfs_buf *bp) #define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); -#define XFS_BUF_TARGET(bp) ((bp)->b_target) #define XFS_BUFTARG_NAME(target) xfs_buf_target_name(target) static inline void xfs_buf_relse(xfs_buf_t *bp) diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index a3d2bbca26c7..5c2b5549e14e 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -971,14 +971,14 @@ xfs_buf_iodone_callbacks( goto do_callbacks; } - if (XFS_BUF_TARGET(bp) != lasttarg || + if (bp->b_target != lasttarg || time_after(jiffies, (lasttime + 5*HZ))) { lasttime = jiffies; xfs_alert(mp, "Device %s: metadata write error block 0x%llx", - XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)), + XFS_BUFTARG_NAME(bp->b_target), (__uint64_t)XFS_BUF_ADDR(bp)); } - lasttarg = XFS_BUF_TARGET(bp); + lasttarg = bp->b_target; /* * If the write was asynchronous then no one will be looking for the diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index b00c808d7d3e..49ecc170f749 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1615,7 +1615,7 @@ xfs_unmountfs_writesb(xfs_mount_t *mp) XFS_BUF_UNDELAYWRITE(sbp); XFS_BUF_WRITE(sbp); XFS_BUF_UNASYNC(sbp); - ASSERT(XFS_BUF_TARGET(sbp) == mp->m_ddev_targp); + ASSERT(sbp->b_target == mp->m_ddev_targp); xfsbdstrat(mp, sbp); error = xfs_buf_iowait(sbp); if (error) diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c index d1f76f8a4c7e..7382bfe40fbd 100644 --- a/fs/xfs/xfs_rw.c +++ b/fs/xfs/xfs_rw.c @@ -104,7 +104,7 @@ xfs_ioerror_alert( xfs_alert(mp, "I/O error occurred: meta-data dev %s block 0x%llx" " (\"%s\") error %d buf count %zd", - XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)), + XFS_BUFTARG_NAME(bp->b_target), (__uint64_t)blkno, func, bp->b_error, XFS_BUF_COUNT(bp)); } diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 7dd62e26ce92..137e2b9e2948 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -54,7 +54,7 @@ xfs_trans_buf_item_match( list_for_each_entry(lidp, &tp->t_items, lid_trans) { blip = (struct xfs_buf_log_item *)lidp->lid_item; if (blip->bli_item.li_type == XFS_LI_BUF && - XFS_BUF_TARGET(blip->bli_buf) == target && + blip->bli_buf->b_target == target && XFS_BUF_ADDR(blip->bli_buf) == blkno && XFS_BUF_COUNT(blip->bli_buf) == len) return blip->bli_buf; -- cgit v1.2.3 From c35a549c8b9e85bdff7e531a410d10e36b4b4f32 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 22 Jul 2011 23:40:46 +0000 Subject: xfs: Remove the macro XFS_BUFTARG_NAME Remove the definition and usages of the macro XFS_BUFTARG_NAME. Signed-off-by: Chandra Seetharaman Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.c | 2 +- fs/xfs/linux-2.6/xfs_buf.h | 11 +++++++---- fs/xfs/xfs_buf_item.c | 2 +- fs/xfs/xfs_rw.c | 2 +- 4 files changed, 10 insertions(+), 7 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 5e929f0e57f7..6bddce40de72 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -1480,7 +1480,7 @@ xfs_setsize_buftarg_flags( if (set_blocksize(btp->bt_bdev, sectorsize)) { xfs_warn(btp->bt_mount, "Cannot set_blocksize to %u on device %s\n", - sectorsize, XFS_BUFTARG_NAME(btp)); + sectorsize, xfs_buf_target_name(btp)); return EINVAL; } diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 4b304990a799..620972b8094d 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -228,8 +228,13 @@ extern void xfs_buf_delwri_promote(xfs_buf_t *); extern int xfs_buf_init(void); extern void xfs_buf_terminate(void); -#define xfs_buf_target_name(target) \ - ({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; }) +static inline const char * +xfs_buf_target_name(struct xfs_buftarg *target) +{ + static char __b[BDEVNAME_SIZE]; + + return bdevname(target->bt_bdev, __b); +} #define XFS_BUF_ZEROFLAGS(bp) \ @@ -292,8 +297,6 @@ static inline int xfs_buf_ispinned(struct xfs_buf *bp) #define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); -#define XFS_BUFTARG_NAME(target) xfs_buf_target_name(target) - static inline void xfs_buf_relse(xfs_buf_t *bp) { xfs_buf_unlock(bp); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 5c2b5549e14e..0402173e79e9 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -975,7 +975,7 @@ xfs_buf_iodone_callbacks( time_after(jiffies, (lasttime + 5*HZ))) { lasttime = jiffies; xfs_alert(mp, "Device %s: metadata write error block 0x%llx", - XFS_BUFTARG_NAME(bp->b_target), + xfs_buf_target_name(bp->b_target), (__uint64_t)XFS_BUF_ADDR(bp)); } lasttarg = bp->b_target; diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c index 7382bfe40fbd..c96a8a05ac03 100644 --- a/fs/xfs/xfs_rw.c +++ b/fs/xfs/xfs_rw.c @@ -104,7 +104,7 @@ xfs_ioerror_alert( xfs_alert(mp, "I/O error occurred: meta-data dev %s block 0x%llx" " (\"%s\") error %d buf count %zd", - XFS_BUFTARG_NAME(bp->b_target), + xfs_buf_target_name(bp->b_target), (__uint64_t)blkno, func, bp->b_error, XFS_BUF_COUNT(bp)); } -- cgit v1.2.3 From abbede1b3a680e108d61aaa415ce5153296e775d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Jul 2011 02:31:30 -0400 Subject: xfs: get rid of open-coded S_ISREG(), etc. Signed-off-by: Al Viro --- fs/xfs/linux-2.6/xfs_ioctl.c | 4 ++-- fs/xfs/xfs_bmap.c | 7 +++---- fs/xfs/xfs_dir2.c | 16 ++++++++-------- fs/xfs/xfs_filestream.c | 2 +- fs/xfs/xfs_inode.c | 16 ++++++++-------- fs/xfs/xfs_inode.h | 2 +- fs/xfs/xfs_log_recover.c | 4 ++-- fs/xfs/xfs_mount.c | 2 +- fs/xfs/xfs_rename.c | 4 ++-- fs/xfs/xfs_vnodeops.c | 10 +++++----- 10 files changed, 33 insertions(+), 34 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index acca2c5ca3fa..14fc00e32f6b 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -850,14 +850,14 @@ xfs_set_diflags( di_flags |= XFS_DIFLAG_NODEFRAG; if (xflags & XFS_XFLAG_FILESTREAM) di_flags |= XFS_DIFLAG_FILESTREAM; - if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(ip->i_d.di_mode)) { if (xflags & XFS_XFLAG_RTINHERIT) di_flags |= XFS_DIFLAG_RTINHERIT; if (xflags & XFS_XFLAG_NOSYMLINKS) di_flags |= XFS_DIFLAG_NOSYMLINKS; if (xflags & XFS_XFLAG_EXTSZINHERIT) di_flags |= XFS_DIFLAG_EXTSZINHERIT; - } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { + } else if (S_ISREG(ip->i_d.di_mode)) { if (xflags & XFS_XFLAG_REALTIME) di_flags |= XFS_DIFLAG_REALTIME; if (xflags & XFS_XFLAG_EXTSIZE) diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index c51a3f903633..ab3e5c6c4642 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -414,7 +414,7 @@ xfs_bmap_add_attrfork_local( if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip)) return 0; - if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(ip->i_d.di_mode)) { mp = ip->i_mount; memset(&dargs, 0, sizeof(dargs)); dargs.dp = ip; @@ -3344,8 +3344,7 @@ xfs_bmap_local_to_extents( * We don't want to deal with the case of keeping inode data inline yet. * So sending the data fork of a regular inode is invalid. */ - ASSERT(!((ip->i_d.di_mode & S_IFMT) == S_IFREG && - whichfork == XFS_DATA_FORK)); + ASSERT(!(S_ISREG(ip->i_d.di_mode) && whichfork == XFS_DATA_FORK)); ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); flags = 0; @@ -4052,7 +4051,7 @@ xfs_bmap_one_block( #ifndef DEBUG if (whichfork == XFS_DATA_FORK) { - return ((ip->i_d.di_mode & S_IFMT) == S_IFREG) ? + return S_ISREG(ip->i_d.di_mode) ? (ip->i_size == ip->i_mount->m_sb.sb_blocksize) : (ip->i_d.di_size == ip->i_mount->m_sb.sb_blocksize); } diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c index 4580ce00aeb4..a2e27010c7fb 100644 --- a/fs/xfs/xfs_dir2.c +++ b/fs/xfs/xfs_dir2.c @@ -121,7 +121,7 @@ xfs_dir_isempty( { xfs_dir2_sf_hdr_t *sfp; - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if (dp->i_d.di_size == 0) /* might happen during shutdown. */ return 1; if (dp->i_d.di_size > XFS_IFORK_DSIZE(dp)) @@ -179,7 +179,7 @@ xfs_dir_init( memset((char *)&args, 0, sizeof(args)); args.dp = dp; args.trans = tp; - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if ((error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino))) return error; return xfs_dir2_sf_create(&args, pdp->i_ino); @@ -202,7 +202,7 @@ xfs_dir_createname( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) return rval; XFS_STATS_INC(xs_dir_create); @@ -278,7 +278,7 @@ xfs_dir_lookup( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_lookup); memset(&args, 0, sizeof(xfs_da_args_t)); @@ -333,7 +333,7 @@ xfs_dir_removename( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_remove); memset(&args, 0, sizeof(xfs_da_args_t)); @@ -382,7 +382,7 @@ xfs_readdir( if (XFS_FORCED_SHUTDOWN(dp->i_mount)) return XFS_ERROR(EIO); - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_getdents); if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) @@ -414,7 +414,7 @@ xfs_dir_replace( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) return rval; @@ -464,7 +464,7 @@ xfs_dir_canenter( if (resblks) return 0; - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); memset(&args, 0, sizeof(xfs_da_args_t)); args.name = name->name; diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 9124425b7f2f..87fceceee2db 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -344,7 +344,7 @@ _xfs_filestream_update_ag( * Either ip is a regular file and pip is a directory, or ip is a * directory and pip is NULL. */ - ASSERT(ip && (((ip->i_d.di_mode & S_IFREG) && pip && + ASSERT(ip && ((S_ISREG(ip->i_d.di_mode) && pip && (pip->i_d.di_mode & S_IFDIR)) || ((ip->i_d.di_mode & S_IFDIR) && !pip))); diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 3cc21ddf9f7e..2fcca4b03ed3 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -368,7 +368,7 @@ xfs_iformat( /* * no local regular files yet */ - if (unlikely((be16_to_cpu(dip->di_mode) & S_IFMT) == S_IFREG)) { + if (unlikely(S_ISREG(be16_to_cpu(dip->di_mode)))) { xfs_warn(ip->i_mount, "corrupt inode %Lu (local format for regular file).", (unsigned long long) ip->i_ino); @@ -1040,7 +1040,7 @@ xfs_ialloc( if (pip && XFS_INHERIT_GID(pip)) { ip->i_d.di_gid = pip->i_d.di_gid; - if ((pip->i_d.di_mode & S_ISGID) && (mode & S_IFMT) == S_IFDIR) { + if ((pip->i_d.di_mode & S_ISGID) && S_ISDIR(mode)) { ip->i_d.di_mode |= S_ISGID; } } @@ -1097,14 +1097,14 @@ xfs_ialloc( if (pip && (pip->i_d.di_flags & XFS_DIFLAG_ANY)) { uint di_flags = 0; - if ((mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(mode)) { if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) di_flags |= XFS_DIFLAG_RTINHERIT; if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) { di_flags |= XFS_DIFLAG_EXTSZINHERIT; ip->i_d.di_extsize = pip->i_d.di_extsize; } - } else if ((mode & S_IFMT) == S_IFREG) { + } else if (S_ISREG(mode)) { if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) di_flags |= XFS_DIFLAG_REALTIME; if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) { @@ -1188,7 +1188,7 @@ xfs_isize_check( int nimaps; xfs_bmbt_irec_t imaps[2]; - if ((ip->i_d.di_mode & S_IFMT) != S_IFREG) + if (!S_ISREG(ip->i_d.di_mode)) return; if (XFS_IS_REALTIME_INODE(ip)) @@ -1828,7 +1828,7 @@ xfs_ifree( ASSERT(ip->i_d.di_nextents == 0); ASSERT(ip->i_d.di_anextents == 0); ASSERT((ip->i_d.di_size == 0 && ip->i_size == 0) || - ((ip->i_d.di_mode & S_IFMT) != S_IFREG)); + (!S_ISREG(ip->i_d.di_mode))); ASSERT(ip->i_d.di_nblocks == 0); /* @@ -2671,7 +2671,7 @@ xfs_iflush_int( __func__, ip->i_ino, ip, ip->i_d.di_magic); goto corrupt_out; } - if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { + if (S_ISREG(ip->i_d.di_mode)) { if (XFS_TEST_ERROR( (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) && (ip->i_d.di_format != XFS_DINODE_FMT_BTREE), @@ -2681,7 +2681,7 @@ xfs_iflush_int( __func__, ip->i_ino, ip); goto corrupt_out; } - } else if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + } else if (S_ISDIR(ip->i_d.di_mode)) { if (XFS_TEST_ERROR( (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) && (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) && diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index a97644ab945a..2380a4bcbece 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -263,7 +263,7 @@ typedef struct xfs_inode { struct inode i_vnode; /* embedded VFS inode */ } xfs_inode_t; -#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ +#define XFS_ISIZE(ip) S_ISREG((ip)->i_d.di_mode) ? \ (ip)->i_size : (ip)->i_d.di_size; /* Convert from vfs inode to xfs inode */ diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 8fe4206de057..052a2c0ec5fb 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2283,7 +2283,7 @@ xlog_recover_inode_pass2( /* Take the opportunity to reset the flush iteration count */ dicp->di_flushiter = 0; - if (unlikely((dicp->di_mode & S_IFMT) == S_IFREG)) { + if (unlikely(S_ISREG(dicp->di_mode))) { if ((dicp->di_format != XFS_DINODE_FMT_EXTENTS) && (dicp->di_format != XFS_DINODE_FMT_BTREE)) { XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(3)", @@ -2296,7 +2296,7 @@ xlog_recover_inode_pass2( error = EFSCORRUPTED; goto error; } - } else if (unlikely((dicp->di_mode & S_IFMT) == S_IFDIR)) { + } else if (unlikely(S_ISDIR(dicp->di_mode))) { if ((dicp->di_format != XFS_DINODE_FMT_EXTENTS) && (dicp->di_format != XFS_DINODE_FMT_BTREE) && (dicp->di_format != XFS_DINODE_FMT_LOCAL)) { diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 7f25245da289..092e16ae4d9d 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1331,7 +1331,7 @@ xfs_mountfs( ASSERT(rip != NULL); - if (unlikely((rip->i_d.di_mode & S_IFMT) != S_IFDIR)) { + if (unlikely(!S_ISDIR(rip->i_d.di_mode))) { xfs_warn(mp, "corrupted root inode %llu: not a directory", (unsigned long long)rip->i_ino); xfs_iunlock(rip, XFS_ILOCK_EXCL); diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c index 77a59891734e..df78c297d1a1 100644 --- a/fs/xfs/xfs_rename.c +++ b/fs/xfs/xfs_rename.c @@ -116,7 +116,7 @@ xfs_rename( trace_xfs_rename(src_dp, target_dp, src_name, target_name); new_parent = (src_dp != target_dp); - src_is_directory = ((src_ip->i_d.di_mode & S_IFMT) == S_IFDIR); + src_is_directory = S_ISDIR(src_ip->i_d.di_mode); if (src_is_directory) { /* @@ -226,7 +226,7 @@ xfs_rename( * target and source are directories and that target can be * destroyed, or that neither is a directory. */ - if ((target_ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(target_ip->i_d.di_mode)) { /* * Make sure target dir is empty. */ diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 88d121486c52..9322e13f0c63 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -121,7 +121,7 @@ xfs_readlink( xfs_ilock(ip, XFS_ILOCK_SHARED); - ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFLNK); + ASSERT(S_ISLNK(ip->i_d.di_mode)); ASSERT(ip->i_d.di_size <= MAXPATHLEN); pathlen = ip->i_d.di_size; @@ -529,7 +529,7 @@ xfs_release( if (ip->i_d.di_nlink == 0) return 0; - if ((((ip->i_d.di_mode & S_IFMT) == S_IFREG) && + if ((S_ISREG(ip->i_d.di_mode) && ((ip->i_size > 0) || (VN_CACHED(VFS_I(ip)) > 0 || ip->i_delayed_blks > 0)) && (ip->i_df.if_flags & XFS_IFEXTENTS)) && @@ -610,7 +610,7 @@ xfs_inactive( truncate = ((ip->i_d.di_nlink == 0) && ((ip->i_d.di_size != 0) || (ip->i_size != 0) || (ip->i_d.di_nextents > 0) || (ip->i_delayed_blks > 0)) && - ((ip->i_d.di_mode & S_IFMT) == S_IFREG)); + S_ISREG(ip->i_d.di_mode)); mp = ip->i_mount; @@ -621,7 +621,7 @@ xfs_inactive( goto out; if (ip->i_d.di_nlink != 0) { - if ((((ip->i_d.di_mode & S_IFMT) == S_IFREG) && + if ((S_ISREG(ip->i_d.di_mode) && ((ip->i_size > 0) || (VN_CACHED(VFS_I(ip)) > 0 || ip->i_delayed_blks > 0)) && (ip->i_df.if_flags & XFS_IFEXTENTS) && @@ -669,7 +669,7 @@ xfs_inactive( xfs_iunlock(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL); return VN_INACTIVE_CACHE; } - } else if ((ip->i_d.di_mode & S_IFMT) == S_IFLNK) { + } else if (S_ISLNK(ip->i_d.di_mode)) { /* * If we get an error while cleaning up a -- cgit v1.2.3 From 03209378b4b25775bf5e6a86e86f074a1057a439 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 25 Jul 2011 20:54:24 -0400 Subject: xfs: fix misspelled S_IS...() mode_t is not a bitmap... Signed-off-by: Al Viro --- fs/xfs/linux-2.6/xfs_ioctl.c | 2 +- fs/xfs/xfs_filestream.c | 12 ++++++------ 2 files changed, 7 insertions(+), 7 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index 14fc00e32f6b..f7ce7debe14c 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -265,7 +265,7 @@ xfs_open_by_handle( return PTR_ERR(filp); } - if (inode->i_mode & S_IFREG) { + if (S_ISREG(inode->i_mode)) { filp->f_flags |= O_NOATIME; filp->f_mode |= FMODE_NOCMTIME; } diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 87fceceee2db..3ff3d9e23ded 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -345,8 +345,8 @@ _xfs_filestream_update_ag( * directory and pip is NULL. */ ASSERT(ip && ((S_ISREG(ip->i_d.di_mode) && pip && - (pip->i_d.di_mode & S_IFDIR)) || - ((ip->i_d.di_mode & S_IFDIR) && !pip))); + S_ISDIR(pip->i_d.di_mode)) || + (S_ISDIR(ip->i_d.di_mode) && !pip))); mp = ip->i_mount; cache = mp->m_filestream; @@ -537,7 +537,7 @@ xfs_filestream_lookup_ag( xfs_agnumber_t ag; int ref; - if (!(ip->i_d.di_mode & (S_IFREG | S_IFDIR))) { + if (!S_ISREG(ip->i_d.di_mode) && !S_ISDIR(ip->i_d.di_mode)) { ASSERT(0); return NULLAGNUMBER; } @@ -579,9 +579,9 @@ xfs_filestream_associate( xfs_agnumber_t ag, rotorstep, startag; int err = 0; - ASSERT(pip->i_d.di_mode & S_IFDIR); - ASSERT(ip->i_d.di_mode & S_IFREG); - if (!(pip->i_d.di_mode & S_IFDIR) || !(ip->i_d.di_mode & S_IFREG)) + ASSERT(S_ISDIR(pip->i_d.di_mode)); + ASSERT(S_ISREG(ip->i_d.di_mode)); + if (!S_ISDIR(pip->i_d.di_mode) || !S_ISREG(ip->i_d.di_mode)) return -EINVAL; mp = pip->i_mount; -- cgit v1.2.3 From 1c4f33296e8e79a6bbfffc8457d547ffc31d5dee Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 18 Jul 2011 18:14:09 +0000 Subject: xfs: encapsulate a block of debug code Pull into a helper function some debug-only code that validates a xfs_da_blkinfo structure that's been read from disk. Signed-off-by: Alex Elder Reviewed-by: Christoph Hellwig --- fs/xfs/xfs_da_btree.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 2925726529f8..5bfcb8779f9f 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -692,6 +692,24 @@ xfs_da_join(xfs_da_state_t *state) return(error); } +#ifdef DEBUG +static void +xfs_da_blkinfo_onlychild_validate(struct xfs_da_blkinfo *blkinfo, __u16 level) +{ + __be16 magic = blkinfo->magic; + + if (level == 1) { + ASSERT(magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC)); + } else + ASSERT(magic == cpu_to_be16(XFS_DA_NODE_MAGIC)); + ASSERT(!blkinfo->forw); + ASSERT(!blkinfo->back); +} +#else /* !DEBUG */ +#define xfs_da_blkinfo_onlychild_validate(blkinfo, level) +#endif /* !DEBUG */ + /* * We have only one entry in the root. Copy the only remaining child of * the old root to block 0 as the new root node. @@ -700,8 +718,6 @@ STATIC int xfs_da_root_join(xfs_da_state_t *state, xfs_da_state_blk_t *root_blk) { xfs_da_intnode_t *oldroot; - /* REFERENCED */ - xfs_da_blkinfo_t *blkinfo; xfs_da_args_t *args; xfs_dablk_t child; xfs_dabuf_t *bp; @@ -732,15 +748,9 @@ xfs_da_root_join(xfs_da_state_t *state, xfs_da_state_blk_t *root_blk) if (error) return(error); ASSERT(bp != NULL); - blkinfo = bp->data; - if (be16_to_cpu(oldroot->hdr.level) == 1) { - ASSERT(blkinfo->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || - blkinfo->magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC)); - } else { - ASSERT(blkinfo->magic == cpu_to_be16(XFS_DA_NODE_MAGIC)); - } - ASSERT(!blkinfo->forw); - ASSERT(!blkinfo->back); + xfs_da_blkinfo_onlychild_validate(bp->data, + be16_to_cpu(oldroot->hdr.level)); + memcpy(root_blk->bp->data, bp->data, state->blocksize); xfs_da_log_buf(args->trans, root_blk->bp, 0, state->blocksize - 1); error = xfs_da_shrink_inode(args, child, bp); -- cgit v1.2.3 From 34951f5cb72b1e3a89a21581cb21e2d5b6a104a4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 26 Jul 2011 15:06:44 +0000 Subject: xfs: flag all buffers as metadata Now that REQ_META bios aren't treated specially in the CFQ I/O schedule anymore, we can tag all buffers as metadata to make blktrace traces more meaningful. Note that we use buffers also to zero out partial blocks in the preallocation / hole punching code, and while they operate on data blocks the zeros written certainly aren't data. I think this case is borderline metadata enough to not bother special casing it. Signed-off-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_buf.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index b2b411985591..d1fe74506c4c 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -1224,6 +1224,9 @@ _xfs_buf_ioapply( rw = READ; } + /* we only use the buffer cache for meta-data */ + rw |= REQ_META; + next_chunk: atomic_inc(&bp->b_io_remaining); nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - BBSHIFT); -- cgit v1.2.3 From d1166ec792c96b65e4c18cbc5985944b5309d838 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 26 Jul 2011 15:07:11 +0000 Subject: xfs: prevent against ioend livelocks in xfs_file_fsync We need to take some locks to prevent new ioends from coming in when we wait for all existing ones to go away. Up to Linux 3.0 that was done using the i_mutex held by the VFS fsync code, but now that we are called without it we need to take care of it ourselves. Use the I/O lock instead of i_mutex just like we do in other places. Signed-off-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_file.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index 825390e1c138..7f7b42469ea7 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -149,7 +149,9 @@ xfs_file_fsync( xfs_iflags_clear(ip, XFS_ITRUNCATED); + xfs_ilock(ip, XFS_IOLOCK_SHARED); xfs_ioend_wait(ip); + xfs_iunlock(ip, XFS_IOLOCK_SHARED); if (mp->m_flags & XFS_MOUNT_BARRIER) { /* -- cgit v1.2.3 From 510792ee29770a38dd409bf2b469ade2fea9eb52 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 26 Jul 2011 15:07:29 +0000 Subject: xfs: optimize the negative xattr caching Since the addition of file capabilities every write needs to read xattrs to check if we have any capabilities to clear. In Linux 3.0 Andi Kleen added a flag to cache the fact that we do not have any attributes on an inode. Make sure to already mark a file as not having any attributes when reading it from disk in case it doesn't even have an attribute fork. Based on an earlier patch from Andi Kleen. Signed-off-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_iops.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 6544c3236bc8..b9c172b3fbbe 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -1194,9 +1194,14 @@ xfs_setup_inode( break; } - /* if there is no attribute fork no ACL can exist on this inode */ - if (!XFS_IFORK_Q(ip)) + /* + * If there is no attribute fork no ACL can exist on this inode, + * and it can't have any file capabilities attached to it either. + */ + if (!XFS_IFORK_Q(ip)) { + inode_has_no_xattr(inode); cache_no_acl(inode); + } xfs_iflags_clear(ip, XFS_INEW); barrier(); -- cgit v1.2.3 From a5a7bbcc0137e5cdad21cce0962f6be0b7ecf173 Mon Sep 17 00:00:00 2001 From: Markus Trippelsdorf Date: Tue, 26 Jul 2011 11:15:20 +0200 Subject: xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set commit 4e34e719e45, that takes the ACL checks to common code, accidentely broke the build when CONFIG_FS_POSIX_ACL is not set: CC fs/xfs/linux-2.6/xfs_iops.o fs/xfs/linux-2.6/xfs_iops.c:1025:14: error: ‘xfs_get_acl’ undeclared here (not in a function) Fix this by declaring xfs_get_acl a static inline function. Signed-off-by: Markus Trippelsdorf Signed-off-by: Alex Elder --- fs/xfs/xfs_acl.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h index 2c656ef49473..39632d941354 100644 --- a/fs/xfs/xfs_acl.h +++ b/fs/xfs/xfs_acl.h @@ -51,7 +51,10 @@ extern int posix_acl_default_exists(struct inode *inode); extern const struct xattr_handler xfs_xattr_acl_access_handler; extern const struct xattr_handler xfs_xattr_acl_default_handler; #else -# define xfs_get_acl(inode, type) NULL +static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type) +{ + return NULL; +} # define xfs_inherit_acl(inode, default_acl) 0 # define xfs_acl_chmod(inode) 0 # define posix_acl_access_exists(inode) 0 -- cgit v1.2.3 From d3fb612076eebec6f67257db0c7a9666ac7e5892 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 23 Jul 2011 18:37:50 -0400 Subject: switch posix_acl_create() to umode_t * so we can pass &inode->i_mode to it Signed-off-by: Al Viro --- fs/9p/acl.c | 4 ++-- fs/9p/acl.h | 4 ++-- fs/9p/vfs_inode_dotl.c | 6 +++--- fs/btrfs/acl.c | 5 +---- fs/ext2/acl.c | 4 +--- fs/ext3/acl.c | 5 +---- fs/ext4/acl.c | 5 +---- fs/generic_acl.c | 7 +++---- fs/gfs2/acl.c | 4 ++-- fs/jffs2/acl.c | 2 +- fs/jffs2/acl.h | 2 +- fs/jffs2/fs.c | 2 +- fs/jffs2/os-linux.h | 2 +- fs/jfs/acl.c | 4 +--- fs/nfs/nfs3acl.c | 2 +- fs/nfs/nfs3proc.c | 6 +++--- fs/ocfs2/acl.c | 2 +- fs/posix_acl.c | 6 +++--- fs/reiserfs/xattr_acl.c | 6 +----- fs/xfs/linux-2.6/xfs_acl.c | 4 ++-- include/linux/nfs_fs.h | 4 ++-- include/linux/posix_acl.h | 2 +- 22 files changed, 35 insertions(+), 53 deletions(-) (limited to 'fs/xfs') diff --git a/fs/9p/acl.c b/fs/9p/acl.c index e9cb57f07546..ad734e3220cf 100644 --- a/fs/9p/acl.c +++ b/fs/9p/acl.c @@ -182,11 +182,11 @@ int v9fs_set_create_acl(struct dentry *dentry, return 0; } -int v9fs_acl_mode(struct inode *dir, mode_t *modep, +int v9fs_acl_mode(struct inode *dir, umode_t *modep, struct posix_acl **dpacl, struct posix_acl **pacl) { int retval = 0; - mode_t mode = *modep; + umode_t mode = *modep; struct posix_acl *acl = NULL; if (!S_ISLNK(mode)) { diff --git a/fs/9p/acl.h b/fs/9p/acl.h index ddb7ae19d971..559556411965 100644 --- a/fs/9p/acl.h +++ b/fs/9p/acl.h @@ -20,7 +20,7 @@ extern struct posix_acl *v9fs_iop_get_acl(struct inode *inode, int type); extern int v9fs_acl_chmod(struct dentry *); extern int v9fs_set_create_acl(struct dentry *, struct posix_acl **, struct posix_acl **); -extern int v9fs_acl_mode(struct inode *dir, mode_t *modep, +extern int v9fs_acl_mode(struct inode *dir, umode_t *modep, struct posix_acl **dpacl, struct posix_acl **pacl); #else #define v9fs_iop_get_acl NULL @@ -38,7 +38,7 @@ static inline int v9fs_set_create_acl(struct dentry *dentry, { return 0; } -static inline int v9fs_acl_mode(struct inode *dir, mode_t *modep, +static inline int v9fs_acl_mode(struct inode *dir, umode_t *modep, struct posix_acl **dpacl, struct posix_acl **pacl) { diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 9a26dce5a99f..b6c8ed205192 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -206,7 +206,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode, int err = 0; gid_t gid; int flags; - mode_t mode; + umode_t mode; char *name = NULL; struct file *filp; struct p9_qid qid; @@ -348,7 +348,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir, struct p9_fid *fid = NULL, *dfid = NULL; gid_t gid; char *name; - mode_t mode; + umode_t mode; struct inode *inode; struct p9_qid qid; struct dentry *dir_dentry; @@ -751,7 +751,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode, int err; gid_t gid; char *name; - mode_t mode; + umode_t mode; struct v9fs_session_info *v9ses; struct p9_fid *fid = NULL, *dfid = NULL; struct inode *inode; diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c index 65a735d8f6e4..59086142c14d 100644 --- a/fs/btrfs/acl.c +++ b/fs/btrfs/acl.c @@ -222,19 +222,16 @@ int btrfs_init_acl(struct btrfs_trans_handle *trans, } if (IS_POSIXACL(dir) && acl) { - mode_t mode = inode->i_mode; - if (S_ISDIR(inode->i_mode)) { ret = btrfs_set_acl(trans, inode, acl, ACL_TYPE_DEFAULT); if (ret) goto failed; } - ret = posix_acl_create(&acl, GFP_NOFS, &mode); + ret = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (ret < 0) return ret; - inode->i_mode = mode; if (ret > 0) { /* we need an acl */ ret = btrfs_set_acl(trans, inode, acl, ACL_TYPE_ACCESS); diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c index 52c053763942..0ce740489ab1 100644 --- a/fs/ext2/acl.c +++ b/fs/ext2/acl.c @@ -253,16 +253,14 @@ ext2_init_acl(struct inode *inode, struct inode *dir) inode->i_mode &= ~current_umask(); } if (test_opt(inode->i_sb, POSIX_ACL) && acl) { - mode_t mode = inode->i_mode; if (S_ISDIR(inode->i_mode)) { error = ext2_set_acl(inode, ACL_TYPE_DEFAULT, acl); if (error) goto cleanup; } - error = posix_acl_create(&acl, GFP_KERNEL, &mode); + error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); if (error < 0) return error; - inode->i_mode = mode; if (error > 0) { /* This is an extended ACL */ error = ext2_set_acl(inode, ACL_TYPE_ACCESS, acl); diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c index 6c29bf0df04a..74a3c6486f8f 100644 --- a/fs/ext3/acl.c +++ b/fs/ext3/acl.c @@ -261,19 +261,16 @@ ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) inode->i_mode &= ~current_umask(); } if (test_opt(inode->i_sb, POSIX_ACL) && acl) { - mode_t mode = inode->i_mode; - if (S_ISDIR(inode->i_mode)) { error = ext3_set_acl(handle, inode, ACL_TYPE_DEFAULT, acl); if (error) goto cleanup; } - error = posix_acl_create(&acl, GFP_NOFS, &mode); + error = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (error < 0) return error; - inode->i_mode = mode; if (error > 0) { /* This is an extended ACL */ error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, acl); diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index dca2d1ded931..74e469ccdf50 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -259,19 +259,16 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) inode->i_mode &= ~current_umask(); } if (test_opt(inode->i_sb, POSIX_ACL) && acl) { - mode_t mode = inode->i_mode; - if (S_ISDIR(inode->i_mode)) { error = ext4_set_acl(handle, inode, ACL_TYPE_DEFAULT, acl); if (error) goto cleanup; } - error = posix_acl_create(&acl, GFP_NOFS, &mode); + error = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (error < 0) return error; - inode->i_mode = mode; if (error > 0) { /* This is an extended ACL */ error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl); diff --git a/fs/generic_acl.c b/fs/generic_acl.c index d5e33a077a67..2dd434d6ff29 100644 --- a/fs/generic_acl.c +++ b/fs/generic_acl.c @@ -125,21 +125,20 @@ int generic_acl_init(struct inode *inode, struct inode *dir) { struct posix_acl *acl = NULL; - mode_t mode = inode->i_mode; int error; - inode->i_mode = mode & ~current_umask(); if (!S_ISLNK(inode->i_mode)) acl = get_cached_acl(dir, ACL_TYPE_DEFAULT); if (acl) { if (S_ISDIR(inode->i_mode)) set_cached_acl(inode, ACL_TYPE_DEFAULT, acl); - error = posix_acl_create(&acl, GFP_KERNEL, &mode); + error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); if (error < 0) return error; - inode->i_mode = mode; if (error > 0) set_cached_acl(inode, ACL_TYPE_ACCESS, acl); + } else { + inode->i_mode &= ~current_umask(); } error = 0; diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 884c9af0542f..0ac3c53f928f 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -72,7 +72,7 @@ struct posix_acl *gfs2_get_acl(struct inode *inode, int type) return gfs2_acl_get(GFS2_I(inode), type); } -static int gfs2_set_mode(struct inode *inode, mode_t mode) +static int gfs2_set_mode(struct inode *inode, umode_t mode) { int error = 0; @@ -117,7 +117,7 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct posix_acl *acl; - mode_t mode = inode->i_mode; + umode_t mode = inode->i_mode; int error = 0; if (!sdp->sd_args.ar_posix_acl) diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 27c511a1cf05..6372a84728d7 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -259,7 +259,7 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) return rc; } -int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, mode_t *i_mode) +int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, umode_t *i_mode) { struct posix_acl *acl; int rc; diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h index b3421c78d9f8..9b477246f2a6 100644 --- a/fs/jffs2/acl.h +++ b/fs/jffs2/acl.h @@ -28,7 +28,7 @@ struct jffs2_acl_header { struct posix_acl *jffs2_get_acl(struct inode *inode, int type); extern int jffs2_acl_chmod(struct inode *); -extern int jffs2_init_acl_pre(struct inode *, struct inode *, mode_t *); +extern int jffs2_init_acl_pre(struct inode *, struct inode *, umode_t *); extern int jffs2_init_acl_post(struct inode *); extern const struct xattr_handler jffs2_acl_access_xattr_handler; diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index b81b35ddf4e4..bbcb9755dd2b 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -406,7 +406,7 @@ int jffs2_remount_fs (struct super_block *sb, int *flags, char *data) /* jffs2_new_inode: allocate a new inode and inocache, add it to the hash, fill in the raw_inode while you're at it. */ -struct inode *jffs2_new_inode (struct inode *dir_i, mode_t mode, struct jffs2_raw_inode *ri) +struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_raw_inode *ri) { struct inode *inode; struct super_block *sb = dir_i->i_sb; diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index 526979c607b6..6c1755c59c0f 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -173,7 +173,7 @@ int jffs2_do_setattr (struct inode *, struct iattr *); struct inode *jffs2_iget(struct super_block *, unsigned long); void jffs2_evict_inode (struct inode *); void jffs2_dirty_inode(struct inode *inode, int flags); -struct inode *jffs2_new_inode (struct inode *dir_i, mode_t mode, +struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_raw_inode *ri); int jffs2_statfs (struct dentry *, struct kstatfs *); int jffs2_remount_fs (struct super_block *, int *, char *); diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c index b3a32caf2b45..45559dc3ea2f 100644 --- a/fs/jfs/acl.c +++ b/fs/jfs/acl.c @@ -127,16 +127,14 @@ int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir) return PTR_ERR(acl); if (acl) { - mode_t mode = inode->i_mode; if (S_ISDIR(inode->i_mode)) { rc = jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, acl); if (rc) goto cleanup; } - rc = posix_acl_create(&acl, GFP_KERNEL, &mode); + rc = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); if (rc < 0) goto cleanup; /* posix_acl_release(NULL) is no-op */ - inode->i_mode = mode; if (rc > 0) rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl); cleanup: diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index e49e73107e62..7ef23979896d 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -415,7 +415,7 @@ fail: } int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, - mode_t mode) + umode_t mode) { struct posix_acl *dfacl, *acl; int error = 0; diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 38053d823eb0..85f1690ca08c 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -316,7 +316,7 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, int flags, struct nfs_open_context *ctx) { struct nfs3_createdata *data; - mode_t mode = sattr->ia_mode; + umode_t mode = sattr->ia_mode; int status = -ENOMEM; dprintk("NFS call create %s\n", dentry->d_name.name); @@ -562,7 +562,7 @@ static int nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) { struct nfs3_createdata *data; - int mode = sattr->ia_mode; + umode_t mode = sattr->ia_mode; int status = -ENOMEM; dprintk("NFS call mkdir %s\n", dentry->d_name.name); @@ -681,7 +681,7 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, dev_t rdev) { struct nfs3_createdata *data; - mode_t mode = sattr->ia_mode; + umode_t mode = sattr->ia_mode; int status = -ENOMEM; dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index 783c58d9daf1..fbafc6e36e25 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -351,7 +351,7 @@ int ocfs2_init_acl(handle_t *handle, struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct posix_acl *acl = NULL; int ret = 0, ret2; - mode_t mode; + umode_t mode; if (!S_ISLNK(inode->i_mode)) { if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) { diff --git a/fs/posix_acl.c b/fs/posix_acl.c index d43729a760e2..f0a017edee1e 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -279,11 +279,11 @@ check_perm: * system calls. All permissions that are not granted by the acl are removed. * The permissions in the acl are changed to reflect the mode_p parameter. */ -static int posix_acl_create_masq(struct posix_acl *acl, mode_t *mode_p) +static int posix_acl_create_masq(struct posix_acl *acl, umode_t *mode_p) { struct posix_acl_entry *pa, *pe; struct posix_acl_entry *group_obj = NULL, *mask_obj = NULL; - mode_t mode = *mode_p; + umode_t mode = *mode_p; int not_equiv = 0; /* assert(atomic_read(acl->a_refcount) == 1); */ @@ -382,7 +382,7 @@ static int posix_acl_chmod_masq(struct posix_acl *acl, mode_t mode) } int -posix_acl_create(struct posix_acl **acl, gfp_t gfp, mode_t *mode_p) +posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) { struct posix_acl *clone = posix_acl_clone(*acl, gfp); int err = -ENOMEM; diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index 7362cf4c946a..89ebc77e0e9a 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -354,8 +354,6 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, return PTR_ERR(acl); if (acl) { - mode_t mode = inode->i_mode; - /* Copy the default ACL to the default ACL of a new directory */ if (S_ISDIR(inode->i_mode)) { err = reiserfs_set_acl(th, inode, ACL_TYPE_DEFAULT, @@ -366,12 +364,10 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, /* Now we reconcile the new ACL and the mode, potentially modifying both */ - err = posix_acl_create(&acl, GFP_NOFS, &mode); + err = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (err < 0) return err; - inode->i_mode = mode; - /* If we need an ACL.. */ if (err > 0) err = reiserfs_set_acl(th, inode, ACL_TYPE_ACCESS, acl); diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c index 44ce51656804..bb85500e0b88 100644 --- a/fs/xfs/linux-2.6/xfs_acl.c +++ b/fs/xfs/linux-2.6/xfs_acl.c @@ -221,7 +221,7 @@ xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) } static int -xfs_set_mode(struct inode *inode, mode_t mode) +xfs_set_mode(struct inode *inode, umode_t mode) { int error = 0; @@ -267,7 +267,7 @@ posix_acl_default_exists(struct inode *inode) int xfs_inherit_acl(struct inode *inode, struct posix_acl *acl) { - mode_t mode = inode->i_mode; + umode_t mode = inode->i_mode; int error = 0, inherit = 0; if (S_ISDIR(inode->i_mode)) { diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 8b579beb6358..dda2ac8a5f7b 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -568,12 +568,12 @@ extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); extern int nfs3_proc_setacl(struct inode *inode, int type, struct posix_acl *acl); extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, - mode_t mode); + umode_t mode); extern void nfs3_forget_cached_acls(struct inode *inode); #else static inline int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, - mode_t mode) + umode_t mode) { return 0; } diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index 9a53b99818e2..bd8d0050d725 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -77,7 +77,7 @@ extern int posix_acl_valid(const struct posix_acl *); extern int posix_acl_permission(struct inode *, const struct posix_acl *, int); extern struct posix_acl *posix_acl_from_mode(mode_t, gfp_t); extern int posix_acl_equiv_mode(const struct posix_acl *, mode_t *); -extern int posix_acl_create(struct posix_acl **, gfp_t, mode_t *); +extern int posix_acl_create(struct posix_acl **, gfp_t, umode_t *); extern int posix_acl_chmod(struct posix_acl **, gfp_t, mode_t); extern struct posix_acl *get_posix_acl(struct inode *, int); -- cgit v1.2.3 From d6952123b53cc8b334df69bba2cd0063b0d88f68 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 23 Jul 2011 18:56:36 -0400 Subject: switch posix_acl_equiv_mode() to umode_t * ... so that &inode->i_mode could be passed to it Signed-off-by: Al Viro --- fs/9p/acl.c | 2 +- fs/btrfs/acl.c | 5 +---- fs/ext2/acl.c | 4 +--- fs/ext3/acl.c | 4 +--- fs/ext4/acl.c | 4 +--- fs/generic_acl.c | 6 +----- fs/gfs2/acl.c | 2 +- fs/jffs2/acl.c | 2 +- fs/jfs/xattr.c | 4 +--- fs/ocfs2/acl.c | 2 +- fs/posix_acl.c | 4 ++-- fs/reiserfs/xattr_acl.c | 4 +--- fs/xfs/linux-2.6/xfs_acl.c | 2 +- include/linux/posix_acl.h | 2 +- 14 files changed, 15 insertions(+), 32 deletions(-) (limited to 'fs/xfs') diff --git a/fs/9p/acl.c b/fs/9p/acl.c index ad734e3220cf..9a1d42630751 100644 --- a/fs/9p/acl.c +++ b/fs/9p/acl.c @@ -319,7 +319,7 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name, case ACL_TYPE_ACCESS: name = POSIX_ACL_XATTR_ACCESS; if (acl) { - mode_t mode = inode->i_mode; + umode_t mode = inode->i_mode; retval = posix_acl_equiv_mode(acl, &mode); if (retval < 0) goto err_out; diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c index 59086142c14d..4cc5c0164ed6 100644 --- a/fs/btrfs/acl.c +++ b/fs/btrfs/acl.c @@ -111,7 +111,6 @@ static int btrfs_set_acl(struct btrfs_trans_handle *trans, int ret, size = 0; const char *name; char *value = NULL; - mode_t mode; if (acl) { ret = posix_acl_valid(acl); @@ -122,13 +121,11 @@ static int btrfs_set_acl(struct btrfs_trans_handle *trans, switch (type) { case ACL_TYPE_ACCESS: - mode = inode->i_mode; name = POSIX_ACL_XATTR_ACCESS; if (acl) { - ret = posix_acl_equiv_mode(acl, &mode); + ret = posix_acl_equiv_mode(acl, &inode->i_mode); if (ret < 0) return ret; - inode->i_mode = mode; } ret = 0; break; diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c index 0ce740489ab1..35d6a3cfd9ff 100644 --- a/fs/ext2/acl.c +++ b/fs/ext2/acl.c @@ -194,12 +194,10 @@ ext2_set_acl(struct inode *inode, int type, struct posix_acl *acl) case ACL_TYPE_ACCESS: name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS; if (acl) { - mode_t mode = inode->i_mode; - error = posix_acl_equiv_mode(acl, &mode); + error = posix_acl_equiv_mode(acl, &inode->i_mode); if (error < 0) return error; else { - inode->i_mode = mode; inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); if (error == 0) diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c index 74a3c6486f8f..3091f62e55b6 100644 --- a/fs/ext3/acl.c +++ b/fs/ext3/acl.c @@ -199,12 +199,10 @@ ext3_set_acl(handle_t *handle, struct inode *inode, int type, case ACL_TYPE_ACCESS: name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS; if (acl) { - mode_t mode = inode->i_mode; - error = posix_acl_equiv_mode(acl, &mode); + error = posix_acl_equiv_mode(acl, &inode->i_mode); if (error < 0) return error; else { - inode->i_mode = mode; inode->i_ctime = CURRENT_TIME_SEC; ext3_mark_inode_dirty(handle, inode); if (error == 0) diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index 74e469ccdf50..a5c29bb3b835 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -198,12 +198,10 @@ ext4_set_acl(handle_t *handle, struct inode *inode, int type, case ACL_TYPE_ACCESS: name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS; if (acl) { - mode_t mode = inode->i_mode; - error = posix_acl_equiv_mode(acl, &mode); + error = posix_acl_equiv_mode(acl, &inode->i_mode); if (error < 0) return error; else { - inode->i_mode = mode; inode->i_ctime = ext4_current_time(inode); ext4_mark_inode_dirty(handle, inode); if (error == 0) diff --git a/fs/generic_acl.c b/fs/generic_acl.c index 2dd434d6ff29..d0dddaceac59 100644 --- a/fs/generic_acl.c +++ b/fs/generic_acl.c @@ -82,18 +82,14 @@ generic_acl_set(struct dentry *dentry, const char *name, const void *value, return PTR_ERR(acl); } if (acl) { - mode_t mode; - error = posix_acl_valid(acl); if (error) goto failed; switch (type) { case ACL_TYPE_ACCESS: - mode = inode->i_mode; - error = posix_acl_equiv_mode(acl, &mode); + error = posix_acl_equiv_mode(acl, &inode->i_mode); if (error < 0) goto failed; - inode->i_mode = mode; inode->i_ctime = CURRENT_TIME; if (error == 0) { posix_acl_release(acl); diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 0ac3c53f928f..34501b64bc47 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -276,7 +276,7 @@ static int gfs2_xattr_system_set(struct dentry *dentry, const char *name, goto out_release; if (type == ACL_TYPE_ACCESS) { - mode_t mode = inode->i_mode; + umode_t mode = inode->i_mode; error = posix_acl_equiv_mode(acl, &mode); if (error <= 0) { diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 6372a84728d7..926d02068a14 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -227,7 +227,7 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) case ACL_TYPE_ACCESS: xprefix = JFFS2_XPREFIX_ACL_ACCESS; if (acl) { - mode_t mode = inode->i_mode; + umode_t mode = inode->i_mode; rc = posix_acl_equiv_mode(acl, &mode); if (rc < 0) return rc; diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c index 24838f1eeee5..e87fedef23db 100644 --- a/fs/jfs/xattr.c +++ b/fs/jfs/xattr.c @@ -693,8 +693,7 @@ static int can_set_system_xattr(struct inode *inode, const char *name, return rc; } if (acl) { - mode_t mode = inode->i_mode; - rc = posix_acl_equiv_mode(acl, &mode); + rc = posix_acl_equiv_mode(acl, &inode->i_mode); posix_acl_release(acl); if (rc < 0) { printk(KERN_ERR @@ -702,7 +701,6 @@ static int can_set_system_xattr(struct inode *inode, const char *name, rc); return rc; } - inode->i_mode = mode; mark_inode_dirty(inode); } /* diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index fbafc6e36e25..a7219075b4de 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -247,7 +247,7 @@ static int ocfs2_set_acl(handle_t *handle, case ACL_TYPE_ACCESS: name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS; if (acl) { - mode_t mode = inode->i_mode; + umode_t mode = inode->i_mode; ret = posix_acl_equiv_mode(acl, &mode); if (ret < 0) return ret; diff --git a/fs/posix_acl.c b/fs/posix_acl.c index f0a017edee1e..3d943be6761c 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -149,10 +149,10 @@ posix_acl_valid(const struct posix_acl *acl) * file mode permission bits, or else 1. Returns -E... on error. */ int -posix_acl_equiv_mode(const struct posix_acl *acl, mode_t *mode_p) +posix_acl_equiv_mode(const struct posix_acl *acl, umode_t *mode_p) { const struct posix_acl_entry *pa, *pe; - mode_t mode = 0; + umode_t mode = 0; int not_equiv = 0; FOREACH_ACL_ENTRY(pa, acl, pe) { diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index 89ebc77e0e9a..6da0396e5052 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -272,12 +272,10 @@ reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, case ACL_TYPE_ACCESS: name = POSIX_ACL_XATTR_ACCESS; if (acl) { - mode_t mode = inode->i_mode; - error = posix_acl_equiv_mode(acl, &mode); + error = posix_acl_equiv_mode(acl, &inode->i_mode); if (error < 0) return error; else { - inode->i_mode = mode; if (error == 0) acl = NULL; } diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c index bb85500e0b88..b6c4b3795c4a 100644 --- a/fs/xfs/linux-2.6/xfs_acl.c +++ b/fs/xfs/linux-2.6/xfs_acl.c @@ -381,7 +381,7 @@ xfs_xattr_acl_set(struct dentry *dentry, const char *name, goto out_release; if (type == ACL_TYPE_ACCESS) { - mode_t mode = inode->i_mode; + umode_t mode = inode->i_mode; error = posix_acl_equiv_mode(acl, &mode); if (error <= 0) { diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index bd8d0050d725..529c32ad58c0 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -76,7 +76,7 @@ extern struct posix_acl *posix_acl_alloc(int, gfp_t); extern int posix_acl_valid(const struct posix_acl *); extern int posix_acl_permission(struct inode *, const struct posix_acl *, int); extern struct posix_acl *posix_acl_from_mode(mode_t, gfp_t); -extern int posix_acl_equiv_mode(const struct posix_acl *, mode_t *); +extern int posix_acl_equiv_mode(const struct posix_acl *, umode_t *); extern int posix_acl_create(struct posix_acl **, gfp_t, umode_t *); extern int posix_acl_chmod(struct posix_acl **, gfp_t, mode_t); -- cgit v1.2.3 From 206d440f64030b6425841bf7cb38e26a5ea0c382 Mon Sep 17 00:00:00 2001 From: Markus Trippelsdorf Date: Tue, 26 Jul 2011 11:15:20 +0200 Subject: xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set commit 4e34e719e45, that takes the ACL checks to common code, accidentely broke the build when CONFIG_FS_POSIX_ACL is not set: CC fs/xfs/linux-2.6/xfs_iops.o fs/xfs/linux-2.6/xfs_iops.c:1025:14: error: ‘xfs_get_acl’ undeclared here (not in a function) Fix this by declaring xfs_get_acl a static inline function. Signed-off-by: Markus Trippelsdorf Signed-off-by: Al Viro --- fs/xfs/xfs_acl.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h index 2c656ef49473..39632d941354 100644 --- a/fs/xfs/xfs_acl.h +++ b/fs/xfs/xfs_acl.h @@ -51,7 +51,10 @@ extern int posix_acl_default_exists(struct inode *inode); extern const struct xattr_handler xfs_xattr_acl_access_handler; extern const struct xattr_handler xfs_xattr_acl_default_handler; #else -# define xfs_get_acl(inode, type) NULL +static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type) +{ + return NULL; +} # define xfs_inherit_acl(inode, default_acl) 0 # define xfs_acl_chmod(inode) 0 # define posix_acl_access_exists(inode) 0 -- cgit v1.2.3 From e44f4112a46ca817fe2758aac7bf7893a64a8c0e Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 22 Jul 2011 16:04:41 +0000 Subject: xfs: set cursor in xfs_ail_splice() even when AIL was empty In xfs_ail_splice(), if a cursor is provided it is updated to point to the last item on the list being spliced into the AIL. But if the AIL was found to be empty, the cursor (if provided) is just initialized instead. There is no reason the empty AIL case needs to be treated any differently. And treating it the same way allows this code to be rearranged a bit, with a somewhat tidier result. Signed-off-by: Alex Elder Reviewed-by: Dave Chinner --- fs/xfs/xfs_trans_ail.c | 67 ++++++++++++++++++++++---------------------------- 1 file changed, 29 insertions(+), 38 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c index 43233e92f0f6..c15aa29fa169 100644 --- a/fs/xfs/xfs_trans_ail.c +++ b/fs/xfs/xfs_trans_ail.c @@ -299,7 +299,7 @@ xfs_trans_ail_cursor_last( * Splice the log item list into the AIL at the given LSN. We splice to the * tail of the given LSN to maintain insert order for push traversals. The * cursor is optional, allowing repeated updates to the same LSN to avoid - * repeated traversals. + * repeated traversals. This should not be called with an empty list. */ static void xfs_ail_splice( @@ -308,50 +308,39 @@ xfs_ail_splice( struct list_head *list, xfs_lsn_t lsn) { - struct xfs_log_item *lip = cur ? cur->item : NULL; - struct xfs_log_item *next_lip; + struct xfs_log_item *lip; + + ASSERT(!list_empty(list)); /* - * Get a new cursor if we don't have a placeholder or the existing one - * has been invalidated. + * Use the cursor to determine the insertion point if one is + * provided. If not, or if the one we got is not valid, + * find the place in the AIL where the items belong. */ - if (!lip || (__psint_t)lip & 1) { + lip = cur ? cur->item : NULL; + if (!lip || (__psint_t) lip & 1) lip = __xfs_trans_ail_cursor_last(ailp, lsn); - if (!lip) { - /* The list is empty, so just splice and return. */ - if (cur) - cur->item = NULL; - list_splice(list, &ailp->xa_ail); - return; - } - } + /* + * If a cursor is provided, we know we're processing the AIL + * in lsn order, and future items to be spliced in will + * follow the last one being inserted now. Update the + * cursor to point to that last item, now while we have a + * reliable pointer to it. + */ + if (cur) + cur->item = list_entry(list->prev, struct xfs_log_item, li_ail); /* - * Our cursor points to the item we want to insert _after_, so we have - * to update the cursor to point to the end of the list we are splicing - * in so that it points to the correct location for the next splice. - * i.e. before the splice - * - * lsn -> lsn -> lsn + x -> lsn + x ... - * ^ - * | cursor points here - * - * After the splice we have: - * - * lsn -> lsn -> lsn -> lsn -> .... -> lsn -> lsn + x -> lsn + x ... - * ^ ^ - * | cursor points here | needs to move here - * - * So we set the cursor to the last item in the list to be spliced - * before we execute the splice, resulting in the cursor pointing to - * the correct item after the splice occurs. + * Finally perform the splice. Unless the AIL was empty, + * lip points to the item in the AIL _after_ which the new + * items should go. If lip is null the AIL was empty, so + * the new items go at the head of the AIL. */ - if (cur) { - next_lip = list_entry(list->prev, struct xfs_log_item, li_ail); - cur->item = next_lip; - } - list_splice(list, &lip->li_ail); + if (lip) + list_splice(list, &lip->li_ail); + else + list_splice(list, &ailp->xa_ail); } /* @@ -682,6 +671,7 @@ xfs_trans_ail_update_bulk( int i; LIST_HEAD(tmp); + ASSERT(nr_items > 0); /* Not required, but true. */ mlip = xfs_ail_min(ailp); for (i = 0; i < nr_items; i++) { @@ -701,7 +691,8 @@ xfs_trans_ail_update_bulk( list_add(&lip->li_ail, &tmp); } - xfs_ail_splice(ailp, cur, &tmp, lsn); + if (!list_empty(&tmp)) + xfs_ail_splice(ailp, cur, &tmp, lsn); if (!mlip_changed) { spin_unlock(&ailp->xa_lock); -- cgit v1.2.3 From 9e978d8f7db1c5de7cdc6450a8ca208db3b95f84 Mon Sep 17 00:00:00 2001 From: Ajeet Yadav Date: Fri, 29 Jul 2011 07:42:59 +0000 Subject: "xfs: fix error handling for synchronous writes" revisited xfs: fix for hang during synchronous buffer write error If removed storage while synchronous buffer write underway, "xfslogd" hangs. Detailed log http://oss.sgi.com/archives/xfs/2011-07/msg00740.html Related work bfc60177f8ab509bc225becbb58f7e53a0e33e81 "xfs: fix error handling for synchronous writes" Given that xfs_bwrite actually does the shutdown already after waiting for the b_iodone completion and given that we actually found that calling xfs_force_shutdown from inside xfs_buf_iodone_callbacks was a major contributor the problem it better to drop this call. Signed-off-by: Ajeet Yadav Reviewed-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/xfs_buf_item.c | 1 - 1 file changed, 1 deletion(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 0402173e79e9..cac2ecfa6746 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -1010,7 +1010,6 @@ xfs_buf_iodone_callbacks( XFS_BUF_UNDELAYWRITE(bp); trace_xfs_buf_error_relse(bp, _RET_IP_); - xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); do_callbacks: xfs_buf_do_callbacks(bp); -- cgit v1.2.3 From ac4d6888b21a8be373f3e06f1d4011fbe2bbbeac Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Wed, 3 Aug 2011 02:18:29 +0000 Subject: xfs: Check the return value of xfs_buf_read() for NULL Check the return value of xfs_buf_read() for NULL and return ENOMEM if it is NULL. This is necessary in a few spots to avoid subsequent code blindly dereferencing the null buffer pointer. Signed-off-by: Chandra Seetharaman Signed-off-by: Alex Elder --- fs/xfs/xfs_log_recover.c | 6 ++++++ fs/xfs/xfs_vnodeops.c | 2 ++ 2 files changed, 8 insertions(+) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 1076b7effcdc..b9afff8a1be2 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2131,6 +2131,8 @@ xlog_recover_buffer_pass2( bp = xfs_buf_read(mp->m_ddev_targp, buf_f->blf_blkno, buf_f->blf_len, buf_flags); + if (!bp) + return XFS_ERROR(ENOMEM); error = xfs_buf_geterror(bp); if (error) { xfs_ioerror_alert("xlog_recover_do..(read#1)", mp, @@ -2222,6 +2224,10 @@ xlog_recover_inode_pass2( bp = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len, XBF_LOCK); + if (!bp) { + error = ENOMEM; + goto error; + } error = xfs_buf_geterror(bp); if (error) { xfs_ioerror_alert("xlog_recover_do..(read#2)", mp, diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index dd05360ad56f..2a432d00d4c1 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -83,6 +83,8 @@ xfs_readlink_bmap( bp = xfs_buf_read(mp->m_ddev_targp, d, BTOBB(byte_cnt), XBF_LOCK | XBF_MAPPED | XBF_DONT_BLOCK); + if (!bp) + return XFS_ERROR(ENOMEM); error = xfs_buf_geterror(bp); if (error) { xfs_ioerror_alert("xfs_readlink", -- cgit v1.2.3 From e570280521290c27621d60cffea2400bdf1f2c88 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Wed, 3 Aug 2011 02:18:34 +0000 Subject: xfs: replace xfs_buf_geterror() with bp->b_error Since we just checked bp for NULL, it is ok to replace xfs_buf_geterror() with bp->b_error in these places. Signed-off-by: Chandra Seetharaman Signed-off-by: Alex Elder --- fs/xfs/xfs_log_recover.c | 4 ++-- fs/xfs/xfs_vnodeops.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index b9afff8a1be2..a199dbcee7d8 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2133,7 +2133,7 @@ xlog_recover_buffer_pass2( buf_flags); if (!bp) return XFS_ERROR(ENOMEM); - error = xfs_buf_geterror(bp); + error = bp->b_error; if (error) { xfs_ioerror_alert("xlog_recover_do..(read#1)", mp, bp, buf_f->blf_blkno); @@ -2228,7 +2228,7 @@ xlog_recover_inode_pass2( error = ENOMEM; goto error; } - error = xfs_buf_geterror(bp); + error = bp->b_error; if (error) { xfs_ioerror_alert("xlog_recover_do..(read#2)", mp, bp, in_f->ilf_blkno); diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 2a432d00d4c1..51fc429527bc 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -85,7 +85,7 @@ xfs_readlink_bmap( XBF_LOCK | XBF_MAPPED | XBF_DONT_BLOCK); if (!bp) return XFS_ERROR(ENOMEM); - error = xfs_buf_geterror(bp); + error = bp->b_error; if (error) { xfs_ioerror_alert("xfs_readlink", ip->i_mount, bp, XFS_BUF_ADDR(bp)); -- cgit v1.2.3 From 06f8e2d6754dc631732415b741b5aa58a0f7133f Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 12 Aug 2011 13:57:55 -0500 Subject: xfs: don't expect xfs headers to be in subdirectories Fix up some #include directives in preparation for moving a few header files out of xfs source subdirectories. Note that "xfs_linux.h" also got its quoting convention for included files switched. Signed-off-by: Alex Elder Reviewed-by: Christoph Hellwig --- fs/xfs/Makefile | 2 +- fs/xfs/linux-2.6/xfs_linux.h | 27 +++++++++++++-------------- fs/xfs/linux-2.6/xfs_quotaops.c | 2 +- fs/xfs/linux-2.6/xfs_trace.c | 4 ++-- fs/xfs/xfs.h | 3 ++- 5 files changed, 19 insertions(+), 19 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 75bb316529dd..b100cf445880 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -16,7 +16,7 @@ # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # -ccflags-y := -I$(src) -I$(src)/linux-2.6 +ccflags-y := -I$(src) -I$(src)/linux-2.6 -I$(src)/quota -I$(src)/support ccflags-$(CONFIG_XFS_DEBUG) += -g XFS_LINUX := linux-2.6 diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index d42f814e4d35..1e8a45e74c3e 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -32,13 +32,12 @@ # define XFS_BIG_INUMS 0 #endif -#include +#include "xfs_types.h" -#include -#include -#include - -#include +#include "kmem.h" +#include "mrlock.h" +#include "time.h" +#include "uuid.h" #include #include @@ -78,14 +77,14 @@ #include #include -#include -#include -#include -#include -#include -#include -#include -#include +#include "xfs_vnode.h" +#include "xfs_stats.h" +#include "xfs_sysctl.h" +#include "xfs_iops.h" +#include "xfs_aops.h" +#include "xfs_super.h" +#include "xfs_buf.h" +#include "xfs_message.h" #ifdef __BIG_ENDIAN #define XFS_NATIVE_HOST 1 diff --git a/fs/xfs/linux-2.6/xfs_quotaops.c b/fs/xfs/linux-2.6/xfs_quotaops.c index 29b9d642e93d..7e76f537abb7 100644 --- a/fs/xfs/linux-2.6/xfs_quotaops.c +++ b/fs/xfs/linux-2.6/xfs_quotaops.c @@ -25,7 +25,7 @@ #include "xfs_trans.h" #include "xfs_bmap_btree.h" #include "xfs_inode.h" -#include "quota/xfs_qm.h" +#include "xfs_qm.h" #include diff --git a/fs/xfs/linux-2.6/xfs_trace.c b/fs/xfs/linux-2.6/xfs_trace.c index 88d25d4aa56e..9010ce885e6a 100644 --- a/fs/xfs/linux-2.6/xfs_trace.c +++ b/fs/xfs/linux-2.6/xfs_trace.c @@ -43,8 +43,8 @@ #include "xfs_quota.h" #include "xfs_iomap.h" #include "xfs_aops.h" -#include "quota/xfs_dquot_item.h" -#include "quota/xfs_dquot.h" +#include "xfs_dquot_item.h" +#include "xfs_dquot.h" #include "xfs_log_recover.h" #include "xfs_inode_item.h" diff --git a/fs/xfs/xfs.h b/fs/xfs/xfs.h index 53ec3ea9a625..d8b11b7f94aa 100644 --- a/fs/xfs/xfs.h +++ b/fs/xfs/xfs.h @@ -24,5 +24,6 @@ #define XFS_BUF_LOCK_TRACKING 1 #endif -#include +#include "xfs_linux.h" + #endif /* __XFS_H__ */ -- cgit v1.2.3 From c59d87c460767bc35dafd490139d3cfe78fb8da4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 12 Aug 2011 16:21:35 -0500 Subject: xfs: remove subdirectories Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the annoying subdirectories in the XFS source code. Besides the large amount of file rename the only changes are to the Makefile, a few files including headers with the subdirectory prefix, and the binary sysctl compat code that includes a header under fs/xfs/ from kernel/. Signed-off-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/Makefile | 117 +- fs/xfs/kmem.c | 132 +++ fs/xfs/kmem.h | 124 ++ fs/xfs/linux-2.6/kmem.c | 132 --- fs/xfs/linux-2.6/kmem.h | 124 -- fs/xfs/linux-2.6/mrlock.h | 90 -- fs/xfs/linux-2.6/time.h | 36 - fs/xfs/linux-2.6/xfs_acl.c | 420 ------- fs/xfs/linux-2.6/xfs_aops.c | 1499 ------------------------ fs/xfs/linux-2.6/xfs_aops.h | 68 -- fs/xfs/linux-2.6/xfs_buf.c | 1876 ------------------------------ fs/xfs/linux-2.6/xfs_buf.h | 326 ------ fs/xfs/linux-2.6/xfs_discard.c | 222 ---- fs/xfs/linux-2.6/xfs_discard.h | 10 - fs/xfs/linux-2.6/xfs_export.c | 250 ---- fs/xfs/linux-2.6/xfs_export.h | 72 -- fs/xfs/linux-2.6/xfs_file.c | 1096 ------------------ fs/xfs/linux-2.6/xfs_fs_subr.c | 96 -- fs/xfs/linux-2.6/xfs_globals.c | 43 - fs/xfs/linux-2.6/xfs_ioctl.c | 1556 ------------------------- fs/xfs/linux-2.6/xfs_ioctl.h | 85 -- fs/xfs/linux-2.6/xfs_ioctl32.c | 672 ----------- fs/xfs/linux-2.6/xfs_ioctl32.h | 237 ---- fs/xfs/linux-2.6/xfs_iops.c | 1210 -------------------- fs/xfs/linux-2.6/xfs_iops.h | 30 - fs/xfs/linux-2.6/xfs_linux.h | 309 ----- fs/xfs/linux-2.6/xfs_message.c | 108 -- fs/xfs/linux-2.6/xfs_message.h | 39 - fs/xfs/linux-2.6/xfs_quotaops.c | 139 --- fs/xfs/linux-2.6/xfs_stats.c | 122 -- fs/xfs/linux-2.6/xfs_stats.h | 223 ---- fs/xfs/linux-2.6/xfs_super.c | 1773 ---------------------------- fs/xfs/linux-2.6/xfs_super.h | 87 -- fs/xfs/linux-2.6/xfs_sync.c | 1065 ----------------- fs/xfs/linux-2.6/xfs_sync.h | 51 - fs/xfs/linux-2.6/xfs_sysctl.c | 252 ---- fs/xfs/linux-2.6/xfs_sysctl.h | 102 -- fs/xfs/linux-2.6/xfs_trace.c | 56 - fs/xfs/linux-2.6/xfs_trace.h | 1746 ---------------------------- fs/xfs/linux-2.6/xfs_vnode.h | 64 -- fs/xfs/linux-2.6/xfs_xattr.c | 241 ---- fs/xfs/mrlock.h | 90 ++ fs/xfs/quota/xfs_dquot.c | 1454 ----------------------- fs/xfs/quota/xfs_dquot.h | 137 --- fs/xfs/quota/xfs_dquot_item.c | 529 --------- fs/xfs/quota/xfs_dquot_item.h | 48 - fs/xfs/quota/xfs_qm.c | 2416 --------------------------------------- fs/xfs/quota/xfs_qm.h | 166 --- fs/xfs/quota/xfs_qm_bhv.c | 176 --- fs/xfs/quota/xfs_qm_stats.c | 105 -- fs/xfs/quota/xfs_qm_stats.h | 53 - fs/xfs/quota/xfs_qm_syscalls.c | 906 --------------- fs/xfs/quota/xfs_quota_priv.h | 53 - fs/xfs/quota/xfs_trans_dquot.c | 890 -------------- fs/xfs/support/uuid.c | 63 - fs/xfs/support/uuid.h | 29 - fs/xfs/time.h | 36 + fs/xfs/uuid.c | 63 + fs/xfs/uuid.h | 29 + fs/xfs/xfs_acl.c | 420 +++++++ fs/xfs/xfs_aops.c | 1499 ++++++++++++++++++++++++ fs/xfs/xfs_aops.h | 68 ++ fs/xfs/xfs_buf.c | 1876 ++++++++++++++++++++++++++++++ fs/xfs/xfs_buf.h | 326 ++++++ fs/xfs/xfs_discard.c | 222 ++++ fs/xfs/xfs_discard.h | 10 + fs/xfs/xfs_dquot.c | 1454 +++++++++++++++++++++++ fs/xfs/xfs_dquot.h | 137 +++ fs/xfs/xfs_dquot_item.c | 529 +++++++++ fs/xfs/xfs_dquot_item.h | 48 + fs/xfs/xfs_export.c | 250 ++++ fs/xfs/xfs_export.h | 72 ++ fs/xfs/xfs_file.c | 1096 ++++++++++++++++++ fs/xfs/xfs_fs_subr.c | 96 ++ fs/xfs/xfs_globals.c | 43 + fs/xfs/xfs_ioctl.c | 1556 +++++++++++++++++++++++++ fs/xfs/xfs_ioctl.h | 85 ++ fs/xfs/xfs_ioctl32.c | 672 +++++++++++ fs/xfs/xfs_ioctl32.h | 237 ++++ fs/xfs/xfs_iops.c | 1210 ++++++++++++++++++++ fs/xfs/xfs_iops.h | 30 + fs/xfs/xfs_linux.h | 309 +++++ fs/xfs/xfs_message.c | 108 ++ fs/xfs/xfs_message.h | 39 + fs/xfs/xfs_qm.c | 2416 +++++++++++++++++++++++++++++++++++++++ fs/xfs/xfs_qm.h | 166 +++ fs/xfs/xfs_qm_bhv.c | 176 +++ fs/xfs/xfs_qm_stats.c | 105 ++ fs/xfs/xfs_qm_stats.h | 53 + fs/xfs/xfs_qm_syscalls.c | 906 +++++++++++++++ fs/xfs/xfs_quota_priv.h | 53 + fs/xfs/xfs_quotaops.c | 139 +++ fs/xfs/xfs_stats.c | 122 ++ fs/xfs/xfs_stats.h | 223 ++++ fs/xfs/xfs_super.c | 1773 ++++++++++++++++++++++++++++ fs/xfs/xfs_super.h | 87 ++ fs/xfs/xfs_sync.c | 1065 +++++++++++++++++ fs/xfs/xfs_sync.h | 51 + fs/xfs/xfs_sysctl.c | 252 ++++ fs/xfs/xfs_sysctl.h | 102 ++ fs/xfs/xfs_trace.c | 56 + fs/xfs/xfs_trace.h | 1746 ++++++++++++++++++++++++++++ fs/xfs/xfs_trans_dquot.c | 890 ++++++++++++++ fs/xfs/xfs_vnode.h | 64 ++ fs/xfs/xfs_xattr.c | 241 ++++ kernel/sysctl_binary.c | 2 +- kernel/sysctl_check.c | 2 +- 107 files changed, 23610 insertions(+), 23615 deletions(-) create mode 100644 fs/xfs/kmem.c create mode 100644 fs/xfs/kmem.h delete mode 100644 fs/xfs/linux-2.6/kmem.c delete mode 100644 fs/xfs/linux-2.6/kmem.h delete mode 100644 fs/xfs/linux-2.6/mrlock.h delete mode 100644 fs/xfs/linux-2.6/time.h delete mode 100644 fs/xfs/linux-2.6/xfs_acl.c delete mode 100644 fs/xfs/linux-2.6/xfs_aops.c delete mode 100644 fs/xfs/linux-2.6/xfs_aops.h delete mode 100644 fs/xfs/linux-2.6/xfs_buf.c delete mode 100644 fs/xfs/linux-2.6/xfs_buf.h delete mode 100644 fs/xfs/linux-2.6/xfs_discard.c delete mode 100644 fs/xfs/linux-2.6/xfs_discard.h delete mode 100644 fs/xfs/linux-2.6/xfs_export.c delete mode 100644 fs/xfs/linux-2.6/xfs_export.h delete mode 100644 fs/xfs/linux-2.6/xfs_file.c delete mode 100644 fs/xfs/linux-2.6/xfs_fs_subr.c delete mode 100644 fs/xfs/linux-2.6/xfs_globals.c delete mode 100644 fs/xfs/linux-2.6/xfs_ioctl.c delete mode 100644 fs/xfs/linux-2.6/xfs_ioctl.h delete mode 100644 fs/xfs/linux-2.6/xfs_ioctl32.c delete mode 100644 fs/xfs/linux-2.6/xfs_ioctl32.h delete mode 100644 fs/xfs/linux-2.6/xfs_iops.c delete mode 100644 fs/xfs/linux-2.6/xfs_iops.h delete mode 100644 fs/xfs/linux-2.6/xfs_linux.h delete mode 100644 fs/xfs/linux-2.6/xfs_message.c delete mode 100644 fs/xfs/linux-2.6/xfs_message.h delete mode 100644 fs/xfs/linux-2.6/xfs_quotaops.c delete mode 100644 fs/xfs/linux-2.6/xfs_stats.c delete mode 100644 fs/xfs/linux-2.6/xfs_stats.h delete mode 100644 fs/xfs/linux-2.6/xfs_super.c delete mode 100644 fs/xfs/linux-2.6/xfs_super.h delete mode 100644 fs/xfs/linux-2.6/xfs_sync.c delete mode 100644 fs/xfs/linux-2.6/xfs_sync.h delete mode 100644 fs/xfs/linux-2.6/xfs_sysctl.c delete mode 100644 fs/xfs/linux-2.6/xfs_sysctl.h delete mode 100644 fs/xfs/linux-2.6/xfs_trace.c delete mode 100644 fs/xfs/linux-2.6/xfs_trace.h delete mode 100644 fs/xfs/linux-2.6/xfs_vnode.h delete mode 100644 fs/xfs/linux-2.6/xfs_xattr.c create mode 100644 fs/xfs/mrlock.h delete mode 100644 fs/xfs/quota/xfs_dquot.c delete mode 100644 fs/xfs/quota/xfs_dquot.h delete mode 100644 fs/xfs/quota/xfs_dquot_item.c delete mode 100644 fs/xfs/quota/xfs_dquot_item.h delete mode 100644 fs/xfs/quota/xfs_qm.c delete mode 100644 fs/xfs/quota/xfs_qm.h delete mode 100644 fs/xfs/quota/xfs_qm_bhv.c delete mode 100644 fs/xfs/quota/xfs_qm_stats.c delete mode 100644 fs/xfs/quota/xfs_qm_stats.h delete mode 100644 fs/xfs/quota/xfs_qm_syscalls.c delete mode 100644 fs/xfs/quota/xfs_quota_priv.h delete mode 100644 fs/xfs/quota/xfs_trans_dquot.c delete mode 100644 fs/xfs/support/uuid.c delete mode 100644 fs/xfs/support/uuid.h create mode 100644 fs/xfs/time.h create mode 100644 fs/xfs/uuid.c create mode 100644 fs/xfs/uuid.h create mode 100644 fs/xfs/xfs_acl.c create mode 100644 fs/xfs/xfs_aops.c create mode 100644 fs/xfs/xfs_aops.h create mode 100644 fs/xfs/xfs_buf.c create mode 100644 fs/xfs/xfs_buf.h create mode 100644 fs/xfs/xfs_discard.c create mode 100644 fs/xfs/xfs_discard.h create mode 100644 fs/xfs/xfs_dquot.c create mode 100644 fs/xfs/xfs_dquot.h create mode 100644 fs/xfs/xfs_dquot_item.c create mode 100644 fs/xfs/xfs_dquot_item.h create mode 100644 fs/xfs/xfs_export.c create mode 100644 fs/xfs/xfs_export.h create mode 100644 fs/xfs/xfs_file.c create mode 100644 fs/xfs/xfs_fs_subr.c create mode 100644 fs/xfs/xfs_globals.c create mode 100644 fs/xfs/xfs_ioctl.c create mode 100644 fs/xfs/xfs_ioctl.h create mode 100644 fs/xfs/xfs_ioctl32.c create mode 100644 fs/xfs/xfs_ioctl32.h create mode 100644 fs/xfs/xfs_iops.c create mode 100644 fs/xfs/xfs_iops.h create mode 100644 fs/xfs/xfs_linux.h create mode 100644 fs/xfs/xfs_message.c create mode 100644 fs/xfs/xfs_message.h create mode 100644 fs/xfs/xfs_qm.c create mode 100644 fs/xfs/xfs_qm.h create mode 100644 fs/xfs/xfs_qm_bhv.c create mode 100644 fs/xfs/xfs_qm_stats.c create mode 100644 fs/xfs/xfs_qm_stats.h create mode 100644 fs/xfs/xfs_qm_syscalls.c create mode 100644 fs/xfs/xfs_quota_priv.h create mode 100644 fs/xfs/xfs_quotaops.c create mode 100644 fs/xfs/xfs_stats.c create mode 100644 fs/xfs/xfs_stats.h create mode 100644 fs/xfs/xfs_super.c create mode 100644 fs/xfs/xfs_super.h create mode 100644 fs/xfs/xfs_sync.c create mode 100644 fs/xfs/xfs_sync.h create mode 100644 fs/xfs/xfs_sysctl.c create mode 100644 fs/xfs/xfs_sysctl.h create mode 100644 fs/xfs/xfs_trace.c create mode 100644 fs/xfs/xfs_trace.h create mode 100644 fs/xfs/xfs_trans_dquot.c create mode 100644 fs/xfs/xfs_vnode.h create mode 100644 fs/xfs/xfs_xattr.c (limited to 'fs/xfs') diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index b100cf445880..ffce328309b8 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -16,44 +16,51 @@ # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # -ccflags-y := -I$(src) -I$(src)/linux-2.6 -I$(src)/quota -I$(src)/support ccflags-$(CONFIG_XFS_DEBUG) += -g -XFS_LINUX := linux-2.6 - obj-$(CONFIG_XFS_FS) += xfs.o -xfs-y += linux-2.6/xfs_trace.o - -xfs-$(CONFIG_XFS_QUOTA) += $(addprefix quota/, \ - xfs_dquot.o \ - xfs_dquot_item.o \ - xfs_trans_dquot.o \ - xfs_qm_syscalls.o \ - xfs_qm_bhv.o \ - xfs_qm.o) -xfs-$(CONFIG_XFS_QUOTA) += linux-2.6/xfs_quotaops.o - -ifeq ($(CONFIG_XFS_QUOTA),y) -xfs-$(CONFIG_PROC_FS) += quota/xfs_qm_stats.o -endif - -xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o -xfs-$(CONFIG_XFS_POSIX_ACL) += $(XFS_LINUX)/xfs_acl.o -xfs-$(CONFIG_PROC_FS) += $(XFS_LINUX)/xfs_stats.o -xfs-$(CONFIG_SYSCTL) += $(XFS_LINUX)/xfs_sysctl.o -xfs-$(CONFIG_COMPAT) += $(XFS_LINUX)/xfs_ioctl32.o +# this one should be compiled first, as the tracing macros can easily blow up +xfs-y += xfs_trace.o +# highlevel code +xfs-y += xfs_aops.o \ + xfs_bit.o \ + xfs_buf.o \ + xfs_dfrag.o \ + xfs_discard.o \ + xfs_error.o \ + xfs_export.o \ + xfs_file.o \ + xfs_filestream.o \ + xfs_fsops.o \ + xfs_fs_subr.o \ + xfs_globals.o \ + xfs_iget.o \ + xfs_ioctl.o \ + xfs_iomap.o \ + xfs_iops.o \ + xfs_itable.o \ + xfs_message.o \ + xfs_mru_cache.o \ + xfs_super.o \ + xfs_sync.o \ + xfs_xattr.o \ + xfs_rename.o \ + xfs_rw.o \ + xfs_utils.o \ + xfs_vnodeops.o \ + kmem.o \ + uuid.o +# code shared with libxfs xfs-y += xfs_alloc.o \ xfs_alloc_btree.o \ xfs_attr.o \ xfs_attr_leaf.o \ - xfs_bit.o \ xfs_bmap.o \ xfs_bmap_btree.o \ xfs_btree.o \ - xfs_buf_item.o \ xfs_da_btree.o \ xfs_dir2.o \ xfs_dir2_block.o \ @@ -61,49 +68,37 @@ xfs-y += xfs_alloc.o \ xfs_dir2_leaf.o \ xfs_dir2_node.o \ xfs_dir2_sf.o \ - xfs_error.o \ - xfs_extfree_item.o \ - xfs_filestream.o \ - xfs_fsops.o \ xfs_ialloc.o \ xfs_ialloc_btree.o \ - xfs_iget.o \ xfs_inode.o \ - xfs_inode_item.o \ - xfs_iomap.o \ - xfs_itable.o \ - xfs_dfrag.o \ - xfs_log.o \ - xfs_log_cil.o \ xfs_log_recover.o \ xfs_mount.o \ - xfs_mru_cache.o \ - xfs_rename.o \ - xfs_trans.o \ + xfs_trans.o + +# low-level transaction/log code +xfs-y += xfs_log.o \ + xfs_log_cil.o \ + xfs_buf_item.o \ + xfs_extfree_item.o \ + xfs_inode_item.o \ xfs_trans_ail.o \ xfs_trans_buf.o \ xfs_trans_extfree.o \ xfs_trans_inode.o \ - xfs_utils.o \ - xfs_vnodeops.o \ - xfs_rw.o - -# Objects in linux/ -xfs-y += $(addprefix $(XFS_LINUX)/, \ - kmem.o \ - xfs_aops.o \ - xfs_buf.o \ - xfs_discard.o \ - xfs_export.o \ - xfs_file.o \ - xfs_fs_subr.o \ - xfs_globals.o \ - xfs_ioctl.o \ - xfs_iops.o \ - xfs_message.o \ - xfs_super.o \ - xfs_sync.o \ - xfs_xattr.o) -# Objects in support/ -xfs-y += support/uuid.o +# optional features +xfs-$(CONFIG_XFS_QUOTA) += xfs_dquot.o \ + xfs_dquot_item.o \ + xfs_trans_dquot.o \ + xfs_qm_syscalls.o \ + xfs_qm_bhv.o \ + xfs_qm.o \ + xfs_quotaops.o +ifeq ($(CONFIG_XFS_QUOTA),y) +xfs-$(CONFIG_PROC_FS) += xfs_qm_stats.o +endif +xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o +xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o +xfs-$(CONFIG_PROC_FS) += xfs_stats.o +xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o +xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c new file mode 100644 index 000000000000..a907de565db3 --- /dev/null +++ b/fs/xfs/kmem.c @@ -0,0 +1,132 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include +#include +#include +#include +#include +#include +#include "time.h" +#include "kmem.h" +#include "xfs_message.h" + +/* + * Greedy allocation. May fail and may return vmalloced memory. + * + * Must be freed using kmem_free_large. + */ +void * +kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize) +{ + void *ptr; + size_t kmsize = maxsize; + + while (!(ptr = kmem_zalloc_large(kmsize))) { + if ((kmsize >>= 1) <= minsize) + kmsize = minsize; + } + if (ptr) + *size = kmsize; + return ptr; +} + +void * +kmem_alloc(size_t size, unsigned int __nocast flags) +{ + int retries = 0; + gfp_t lflags = kmem_flags_convert(flags); + void *ptr; + + do { + ptr = kmalloc(size, lflags); + if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP))) + return ptr; + if (!(++retries % 100)) + xfs_err(NULL, + "possible memory allocation deadlock in %s (mode:0x%x)", + __func__, lflags); + congestion_wait(BLK_RW_ASYNC, HZ/50); + } while (1); +} + +void * +kmem_zalloc(size_t size, unsigned int __nocast flags) +{ + void *ptr; + + ptr = kmem_alloc(size, flags); + if (ptr) + memset((char *)ptr, 0, (int)size); + return ptr; +} + +void +kmem_free(const void *ptr) +{ + if (!is_vmalloc_addr(ptr)) { + kfree(ptr); + } else { + vfree(ptr); + } +} + +void * +kmem_realloc(const void *ptr, size_t newsize, size_t oldsize, + unsigned int __nocast flags) +{ + void *new; + + new = kmem_alloc(newsize, flags); + if (ptr) { + if (new) + memcpy(new, ptr, + ((oldsize < newsize) ? oldsize : newsize)); + kmem_free(ptr); + } + return new; +} + +void * +kmem_zone_alloc(kmem_zone_t *zone, unsigned int __nocast flags) +{ + int retries = 0; + gfp_t lflags = kmem_flags_convert(flags); + void *ptr; + + do { + ptr = kmem_cache_alloc(zone, lflags); + if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP))) + return ptr; + if (!(++retries % 100)) + xfs_err(NULL, + "possible memory allocation deadlock in %s (mode:0x%x)", + __func__, lflags); + congestion_wait(BLK_RW_ASYNC, HZ/50); + } while (1); +} + +void * +kmem_zone_zalloc(kmem_zone_t *zone, unsigned int __nocast flags) +{ + void *ptr; + + ptr = kmem_zone_alloc(zone, flags); + if (ptr) + memset((char *)ptr, 0, kmem_cache_size(zone)); + return ptr; +} diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h new file mode 100644 index 000000000000..f7c8f7a9ea6d --- /dev/null +++ b/fs/xfs/kmem.h @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_SUPPORT_KMEM_H__ +#define __XFS_SUPPORT_KMEM_H__ + +#include +#include +#include +#include + +/* + * General memory allocation interfaces + */ + +#define KM_SLEEP 0x0001u +#define KM_NOSLEEP 0x0002u +#define KM_NOFS 0x0004u +#define KM_MAYFAIL 0x0008u + +/* + * We use a special process flag to avoid recursive callbacks into + * the filesystem during transactions. We will also issue our own + * warnings, so we explicitly skip any generic ones (silly of us). + */ +static inline gfp_t +kmem_flags_convert(unsigned int __nocast flags) +{ + gfp_t lflags; + + BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL)); + + if (flags & KM_NOSLEEP) { + lflags = GFP_ATOMIC | __GFP_NOWARN; + } else { + lflags = GFP_KERNEL | __GFP_NOWARN; + if ((current->flags & PF_FSTRANS) || (flags & KM_NOFS)) + lflags &= ~__GFP_FS; + } + return lflags; +} + +extern void *kmem_alloc(size_t, unsigned int __nocast); +extern void *kmem_zalloc(size_t, unsigned int __nocast); +extern void *kmem_realloc(const void *, size_t, size_t, unsigned int __nocast); +extern void kmem_free(const void *); + +static inline void *kmem_zalloc_large(size_t size) +{ + void *ptr; + + ptr = vmalloc(size); + if (ptr) + memset(ptr, 0, size); + return ptr; +} +static inline void kmem_free_large(void *ptr) +{ + vfree(ptr); +} + +extern void *kmem_zalloc_greedy(size_t *, size_t, size_t); + +/* + * Zone interfaces + */ + +#define KM_ZONE_HWALIGN SLAB_HWCACHE_ALIGN +#define KM_ZONE_RECLAIM SLAB_RECLAIM_ACCOUNT +#define KM_ZONE_SPREAD SLAB_MEM_SPREAD + +#define kmem_zone kmem_cache +#define kmem_zone_t struct kmem_cache + +static inline kmem_zone_t * +kmem_zone_init(int size, char *zone_name) +{ + return kmem_cache_create(zone_name, size, 0, 0, NULL); +} + +static inline kmem_zone_t * +kmem_zone_init_flags(int size, char *zone_name, unsigned long flags, + void (*construct)(void *)) +{ + return kmem_cache_create(zone_name, size, 0, flags, construct); +} + +static inline void +kmem_zone_free(kmem_zone_t *zone, void *ptr) +{ + kmem_cache_free(zone, ptr); +} + +static inline void +kmem_zone_destroy(kmem_zone_t *zone) +{ + if (zone) + kmem_cache_destroy(zone); +} + +extern void *kmem_zone_alloc(kmem_zone_t *, unsigned int __nocast); +extern void *kmem_zone_zalloc(kmem_zone_t *, unsigned int __nocast); + +static inline int +kmem_shake_allow(gfp_t gfp_mask) +{ + return ((gfp_mask & __GFP_WAIT) && (gfp_mask & __GFP_FS)); +} + +#endif /* __XFS_SUPPORT_KMEM_H__ */ diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c deleted file mode 100644 index a907de565db3..000000000000 --- a/fs/xfs/linux-2.6/kmem.c +++ /dev/null @@ -1,132 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include -#include -#include -#include -#include -#include -#include "time.h" -#include "kmem.h" -#include "xfs_message.h" - -/* - * Greedy allocation. May fail and may return vmalloced memory. - * - * Must be freed using kmem_free_large. - */ -void * -kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize) -{ - void *ptr; - size_t kmsize = maxsize; - - while (!(ptr = kmem_zalloc_large(kmsize))) { - if ((kmsize >>= 1) <= minsize) - kmsize = minsize; - } - if (ptr) - *size = kmsize; - return ptr; -} - -void * -kmem_alloc(size_t size, unsigned int __nocast flags) -{ - int retries = 0; - gfp_t lflags = kmem_flags_convert(flags); - void *ptr; - - do { - ptr = kmalloc(size, lflags); - if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP))) - return ptr; - if (!(++retries % 100)) - xfs_err(NULL, - "possible memory allocation deadlock in %s (mode:0x%x)", - __func__, lflags); - congestion_wait(BLK_RW_ASYNC, HZ/50); - } while (1); -} - -void * -kmem_zalloc(size_t size, unsigned int __nocast flags) -{ - void *ptr; - - ptr = kmem_alloc(size, flags); - if (ptr) - memset((char *)ptr, 0, (int)size); - return ptr; -} - -void -kmem_free(const void *ptr) -{ - if (!is_vmalloc_addr(ptr)) { - kfree(ptr); - } else { - vfree(ptr); - } -} - -void * -kmem_realloc(const void *ptr, size_t newsize, size_t oldsize, - unsigned int __nocast flags) -{ - void *new; - - new = kmem_alloc(newsize, flags); - if (ptr) { - if (new) - memcpy(new, ptr, - ((oldsize < newsize) ? oldsize : newsize)); - kmem_free(ptr); - } - return new; -} - -void * -kmem_zone_alloc(kmem_zone_t *zone, unsigned int __nocast flags) -{ - int retries = 0; - gfp_t lflags = kmem_flags_convert(flags); - void *ptr; - - do { - ptr = kmem_cache_alloc(zone, lflags); - if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP))) - return ptr; - if (!(++retries % 100)) - xfs_err(NULL, - "possible memory allocation deadlock in %s (mode:0x%x)", - __func__, lflags); - congestion_wait(BLK_RW_ASYNC, HZ/50); - } while (1); -} - -void * -kmem_zone_zalloc(kmem_zone_t *zone, unsigned int __nocast flags) -{ - void *ptr; - - ptr = kmem_zone_alloc(zone, flags); - if (ptr) - memset((char *)ptr, 0, kmem_cache_size(zone)); - return ptr; -} diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/linux-2.6/kmem.h deleted file mode 100644 index f7c8f7a9ea6d..000000000000 --- a/fs/xfs/linux-2.6/kmem.h +++ /dev/null @@ -1,124 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SUPPORT_KMEM_H__ -#define __XFS_SUPPORT_KMEM_H__ - -#include -#include -#include -#include - -/* - * General memory allocation interfaces - */ - -#define KM_SLEEP 0x0001u -#define KM_NOSLEEP 0x0002u -#define KM_NOFS 0x0004u -#define KM_MAYFAIL 0x0008u - -/* - * We use a special process flag to avoid recursive callbacks into - * the filesystem during transactions. We will also issue our own - * warnings, so we explicitly skip any generic ones (silly of us). - */ -static inline gfp_t -kmem_flags_convert(unsigned int __nocast flags) -{ - gfp_t lflags; - - BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL)); - - if (flags & KM_NOSLEEP) { - lflags = GFP_ATOMIC | __GFP_NOWARN; - } else { - lflags = GFP_KERNEL | __GFP_NOWARN; - if ((current->flags & PF_FSTRANS) || (flags & KM_NOFS)) - lflags &= ~__GFP_FS; - } - return lflags; -} - -extern void *kmem_alloc(size_t, unsigned int __nocast); -extern void *kmem_zalloc(size_t, unsigned int __nocast); -extern void *kmem_realloc(const void *, size_t, size_t, unsigned int __nocast); -extern void kmem_free(const void *); - -static inline void *kmem_zalloc_large(size_t size) -{ - void *ptr; - - ptr = vmalloc(size); - if (ptr) - memset(ptr, 0, size); - return ptr; -} -static inline void kmem_free_large(void *ptr) -{ - vfree(ptr); -} - -extern void *kmem_zalloc_greedy(size_t *, size_t, size_t); - -/* - * Zone interfaces - */ - -#define KM_ZONE_HWALIGN SLAB_HWCACHE_ALIGN -#define KM_ZONE_RECLAIM SLAB_RECLAIM_ACCOUNT -#define KM_ZONE_SPREAD SLAB_MEM_SPREAD - -#define kmem_zone kmem_cache -#define kmem_zone_t struct kmem_cache - -static inline kmem_zone_t * -kmem_zone_init(int size, char *zone_name) -{ - return kmem_cache_create(zone_name, size, 0, 0, NULL); -} - -static inline kmem_zone_t * -kmem_zone_init_flags(int size, char *zone_name, unsigned long flags, - void (*construct)(void *)) -{ - return kmem_cache_create(zone_name, size, 0, flags, construct); -} - -static inline void -kmem_zone_free(kmem_zone_t *zone, void *ptr) -{ - kmem_cache_free(zone, ptr); -} - -static inline void -kmem_zone_destroy(kmem_zone_t *zone) -{ - if (zone) - kmem_cache_destroy(zone); -} - -extern void *kmem_zone_alloc(kmem_zone_t *, unsigned int __nocast); -extern void *kmem_zone_zalloc(kmem_zone_t *, unsigned int __nocast); - -static inline int -kmem_shake_allow(gfp_t gfp_mask) -{ - return ((gfp_mask & __GFP_WAIT) && (gfp_mask & __GFP_FS)); -} - -#endif /* __XFS_SUPPORT_KMEM_H__ */ diff --git a/fs/xfs/linux-2.6/mrlock.h b/fs/xfs/linux-2.6/mrlock.h deleted file mode 100644 index ff6a19873e5c..000000000000 --- a/fs/xfs/linux-2.6/mrlock.h +++ /dev/null @@ -1,90 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SUPPORT_MRLOCK_H__ -#define __XFS_SUPPORT_MRLOCK_H__ - -#include - -typedef struct { - struct rw_semaphore mr_lock; -#ifdef DEBUG - int mr_writer; -#endif -} mrlock_t; - -#ifdef DEBUG -#define mrinit(mrp, name) \ - do { (mrp)->mr_writer = 0; init_rwsem(&(mrp)->mr_lock); } while (0) -#else -#define mrinit(mrp, name) \ - do { init_rwsem(&(mrp)->mr_lock); } while (0) -#endif - -#define mrlock_init(mrp, t,n,s) mrinit(mrp, n) -#define mrfree(mrp) do { } while (0) - -static inline void mraccess_nested(mrlock_t *mrp, int subclass) -{ - down_read_nested(&mrp->mr_lock, subclass); -} - -static inline void mrupdate_nested(mrlock_t *mrp, int subclass) -{ - down_write_nested(&mrp->mr_lock, subclass); -#ifdef DEBUG - mrp->mr_writer = 1; -#endif -} - -static inline int mrtryaccess(mrlock_t *mrp) -{ - return down_read_trylock(&mrp->mr_lock); -} - -static inline int mrtryupdate(mrlock_t *mrp) -{ - if (!down_write_trylock(&mrp->mr_lock)) - return 0; -#ifdef DEBUG - mrp->mr_writer = 1; -#endif - return 1; -} - -static inline void mrunlock_excl(mrlock_t *mrp) -{ -#ifdef DEBUG - mrp->mr_writer = 0; -#endif - up_write(&mrp->mr_lock); -} - -static inline void mrunlock_shared(mrlock_t *mrp) -{ - up_read(&mrp->mr_lock); -} - -static inline void mrdemote(mrlock_t *mrp) -{ -#ifdef DEBUG - mrp->mr_writer = 0; -#endif - downgrade_write(&mrp->mr_lock); -} - -#endif /* __XFS_SUPPORT_MRLOCK_H__ */ diff --git a/fs/xfs/linux-2.6/time.h b/fs/xfs/linux-2.6/time.h deleted file mode 100644 index 387e695a184c..000000000000 --- a/fs/xfs/linux-2.6/time.h +++ /dev/null @@ -1,36 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SUPPORT_TIME_H__ -#define __XFS_SUPPORT_TIME_H__ - -#include -#include - -typedef struct timespec timespec_t; - -static inline void delay(long ticks) -{ - schedule_timeout_uninterruptible(ticks); -} - -static inline void nanotime(struct timespec *tvp) -{ - *tvp = CURRENT_TIME; -} - -#endif /* __XFS_SUPPORT_TIME_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c deleted file mode 100644 index b6c4b3795c4a..000000000000 --- a/fs/xfs/linux-2.6/xfs_acl.c +++ /dev/null @@ -1,420 +0,0 @@ -/* - * Copyright (c) 2008, Christoph Hellwig - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_acl.h" -#include "xfs_attr.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_vnodeops.h" -#include "xfs_trace.h" -#include -#include -#include - - -/* - * Locking scheme: - * - all ACL updates are protected by inode->i_mutex, which is taken before - * calling into this file. - */ - -STATIC struct posix_acl * -xfs_acl_from_disk(struct xfs_acl *aclp) -{ - struct posix_acl_entry *acl_e; - struct posix_acl *acl; - struct xfs_acl_entry *ace; - int count, i; - - count = be32_to_cpu(aclp->acl_cnt); - - acl = posix_acl_alloc(count, GFP_KERNEL); - if (!acl) - return ERR_PTR(-ENOMEM); - - for (i = 0; i < count; i++) { - acl_e = &acl->a_entries[i]; - ace = &aclp->acl_entry[i]; - - /* - * The tag is 32 bits on disk and 16 bits in core. - * - * Because every access to it goes through the core - * format first this is not a problem. - */ - acl_e->e_tag = be32_to_cpu(ace->ae_tag); - acl_e->e_perm = be16_to_cpu(ace->ae_perm); - - switch (acl_e->e_tag) { - case ACL_USER: - case ACL_GROUP: - acl_e->e_id = be32_to_cpu(ace->ae_id); - break; - case ACL_USER_OBJ: - case ACL_GROUP_OBJ: - case ACL_MASK: - case ACL_OTHER: - acl_e->e_id = ACL_UNDEFINED_ID; - break; - default: - goto fail; - } - } - return acl; - -fail: - posix_acl_release(acl); - return ERR_PTR(-EINVAL); -} - -STATIC void -xfs_acl_to_disk(struct xfs_acl *aclp, const struct posix_acl *acl) -{ - const struct posix_acl_entry *acl_e; - struct xfs_acl_entry *ace; - int i; - - aclp->acl_cnt = cpu_to_be32(acl->a_count); - for (i = 0; i < acl->a_count; i++) { - ace = &aclp->acl_entry[i]; - acl_e = &acl->a_entries[i]; - - ace->ae_tag = cpu_to_be32(acl_e->e_tag); - ace->ae_id = cpu_to_be32(acl_e->e_id); - ace->ae_perm = cpu_to_be16(acl_e->e_perm); - } -} - -struct posix_acl * -xfs_get_acl(struct inode *inode, int type) -{ - struct xfs_inode *ip = XFS_I(inode); - struct posix_acl *acl; - struct xfs_acl *xfs_acl; - int len = sizeof(struct xfs_acl); - unsigned char *ea_name; - int error; - - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - - trace_xfs_get_acl(ip); - - switch (type) { - case ACL_TYPE_ACCESS: - ea_name = SGI_ACL_FILE; - break; - case ACL_TYPE_DEFAULT: - ea_name = SGI_ACL_DEFAULT; - break; - default: - BUG(); - } - - /* - * If we have a cached ACLs value just return it, not need to - * go out to the disk. - */ - - xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL); - if (!xfs_acl) - return ERR_PTR(-ENOMEM); - - error = -xfs_attr_get(ip, ea_name, (unsigned char *)xfs_acl, - &len, ATTR_ROOT); - if (error) { - /* - * If the attribute doesn't exist make sure we have a negative - * cache entry, for any other error assume it is transient and - * leave the cache entry as ACL_NOT_CACHED. - */ - if (error == -ENOATTR) { - acl = NULL; - goto out_update_cache; - } - goto out; - } - - acl = xfs_acl_from_disk(xfs_acl); - if (IS_ERR(acl)) - goto out; - - out_update_cache: - set_cached_acl(inode, type, acl); - out: - kfree(xfs_acl); - return acl; -} - -STATIC int -xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) -{ - struct xfs_inode *ip = XFS_I(inode); - unsigned char *ea_name; - int error; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - switch (type) { - case ACL_TYPE_ACCESS: - ea_name = SGI_ACL_FILE; - break; - case ACL_TYPE_DEFAULT: - if (!S_ISDIR(inode->i_mode)) - return acl ? -EACCES : 0; - ea_name = SGI_ACL_DEFAULT; - break; - default: - return -EINVAL; - } - - if (acl) { - struct xfs_acl *xfs_acl; - int len; - - xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL); - if (!xfs_acl) - return -ENOMEM; - - xfs_acl_to_disk(xfs_acl, acl); - len = sizeof(struct xfs_acl) - - (sizeof(struct xfs_acl_entry) * - (XFS_ACL_MAX_ENTRIES - acl->a_count)); - - error = -xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl, - len, ATTR_ROOT); - - kfree(xfs_acl); - } else { - /* - * A NULL ACL argument means we want to remove the ACL. - */ - error = -xfs_attr_remove(ip, ea_name, ATTR_ROOT); - - /* - * If the attribute didn't exist to start with that's fine. - */ - if (error == -ENOATTR) - error = 0; - } - - if (!error) - set_cached_acl(inode, type, acl); - return error; -} - -static int -xfs_set_mode(struct inode *inode, umode_t mode) -{ - int error = 0; - - if (mode != inode->i_mode) { - struct iattr iattr; - - iattr.ia_valid = ATTR_MODE | ATTR_CTIME; - iattr.ia_mode = mode; - iattr.ia_ctime = current_fs_time(inode->i_sb); - - error = -xfs_setattr_nonsize(XFS_I(inode), &iattr, XFS_ATTR_NOACL); - } - - return error; -} - -static int -xfs_acl_exists(struct inode *inode, unsigned char *name) -{ - int len = sizeof(struct xfs_acl); - - return (xfs_attr_get(XFS_I(inode), name, NULL, &len, - ATTR_ROOT|ATTR_KERNOVAL) == 0); -} - -int -posix_acl_access_exists(struct inode *inode) -{ - return xfs_acl_exists(inode, SGI_ACL_FILE); -} - -int -posix_acl_default_exists(struct inode *inode) -{ - if (!S_ISDIR(inode->i_mode)) - return 0; - return xfs_acl_exists(inode, SGI_ACL_DEFAULT); -} - -/* - * No need for i_mutex because the inode is not yet exposed to the VFS. - */ -int -xfs_inherit_acl(struct inode *inode, struct posix_acl *acl) -{ - umode_t mode = inode->i_mode; - int error = 0, inherit = 0; - - if (S_ISDIR(inode->i_mode)) { - error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, acl); - if (error) - goto out; - } - - error = posix_acl_create(&acl, GFP_KERNEL, &mode); - if (error < 0) - return error; - - /* - * If posix_acl_create returns a positive value we need to - * inherit a permission that can't be represented using the Unix - * mode bits and we actually need to set an ACL. - */ - if (error > 0) - inherit = 1; - - error = xfs_set_mode(inode, mode); - if (error) - goto out; - - if (inherit) - error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); - -out: - posix_acl_release(acl); - return error; -} - -int -xfs_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int error; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - acl = xfs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (error) - return error; - - error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - return error; -} - -static int -xfs_xattr_acl_get(struct dentry *dentry, const char *name, - void *value, size_t size, int type) -{ - struct posix_acl *acl; - int error; - - acl = xfs_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - - error = posix_acl_to_xattr(acl, value, size); - posix_acl_release(acl); - - return error; -} - -static int -xfs_xattr_acl_set(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; - int error = 0; - - if (flags & XATTR_CREATE) - return -EINVAL; - if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) - return value ? -EACCES : 0; - if ((current_fsuid() != inode->i_uid) && !capable(CAP_FOWNER)) - return -EPERM; - - if (!value) - goto set_acl; - - acl = posix_acl_from_xattr(value, size); - if (!acl) { - /* - * acl_set_file(3) may request that we set default ACLs with - * zero length -- defend (gracefully) against that here. - */ - goto out; - } - if (IS_ERR(acl)) { - error = PTR_ERR(acl); - goto out; - } - - error = posix_acl_valid(acl); - if (error) - goto out_release; - - error = -EINVAL; - if (acl->a_count > XFS_ACL_MAX_ENTRIES) - goto out_release; - - if (type == ACL_TYPE_ACCESS) { - umode_t mode = inode->i_mode; - error = posix_acl_equiv_mode(acl, &mode); - - if (error <= 0) { - posix_acl_release(acl); - acl = NULL; - - if (error < 0) - return error; - } - - error = xfs_set_mode(inode, mode); - if (error) - goto out_release; - } - - set_acl: - error = xfs_set_acl(inode, type, acl); - out_release: - posix_acl_release(acl); - out: - return error; -} - -const struct xattr_handler xfs_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .get = xfs_xattr_acl_get, - .set = xfs_xattr_acl_set, -}; - -const struct xattr_handler xfs_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .get = xfs_xattr_acl_get, - .set = xfs_xattr_acl_set, -}; diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c deleted file mode 100644 index 63e971e2b837..000000000000 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ /dev/null @@ -1,1499 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_trans.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_alloc.h" -#include "xfs_error.h" -#include "xfs_rw.h" -#include "xfs_iomap.h" -#include "xfs_vnodeops.h" -#include "xfs_trace.h" -#include "xfs_bmap.h" -#include -#include -#include -#include - - -/* - * Prime number of hash buckets since address is used as the key. - */ -#define NVSYNC 37 -#define to_ioend_wq(v) (&xfs_ioend_wq[((unsigned long)v) % NVSYNC]) -static wait_queue_head_t xfs_ioend_wq[NVSYNC]; - -void __init -xfs_ioend_init(void) -{ - int i; - - for (i = 0; i < NVSYNC; i++) - init_waitqueue_head(&xfs_ioend_wq[i]); -} - -void -xfs_ioend_wait( - xfs_inode_t *ip) -{ - wait_queue_head_t *wq = to_ioend_wq(ip); - - wait_event(*wq, (atomic_read(&ip->i_iocount) == 0)); -} - -STATIC void -xfs_ioend_wake( - xfs_inode_t *ip) -{ - if (atomic_dec_and_test(&ip->i_iocount)) - wake_up(to_ioend_wq(ip)); -} - -void -xfs_count_page_state( - struct page *page, - int *delalloc, - int *unwritten) -{ - struct buffer_head *bh, *head; - - *delalloc = *unwritten = 0; - - bh = head = page_buffers(page); - do { - if (buffer_unwritten(bh)) - (*unwritten) = 1; - else if (buffer_delay(bh)) - (*delalloc) = 1; - } while ((bh = bh->b_this_page) != head); -} - -STATIC struct block_device * -xfs_find_bdev_for_inode( - struct inode *inode) -{ - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - - if (XFS_IS_REALTIME_INODE(ip)) - return mp->m_rtdev_targp->bt_bdev; - else - return mp->m_ddev_targp->bt_bdev; -} - -/* - * We're now finished for good with this ioend structure. - * Update the page state via the associated buffer_heads, - * release holds on the inode and bio, and finally free - * up memory. Do not use the ioend after this. - */ -STATIC void -xfs_destroy_ioend( - xfs_ioend_t *ioend) -{ - struct buffer_head *bh, *next; - struct xfs_inode *ip = XFS_I(ioend->io_inode); - - for (bh = ioend->io_buffer_head; bh; bh = next) { - next = bh->b_private; - bh->b_end_io(bh, !ioend->io_error); - } - - /* - * Volume managers supporting multiple paths can send back ENODEV - * when the final path disappears. In this case continuing to fill - * the page cache with dirty data which cannot be written out is - * evil, so prevent that. - */ - if (unlikely(ioend->io_error == -ENODEV)) { - xfs_do_force_shutdown(ip->i_mount, SHUTDOWN_DEVICE_REQ, - __FILE__, __LINE__); - } - - xfs_ioend_wake(ip); - mempool_free(ioend, xfs_ioend_pool); -} - -/* - * If the end of the current ioend is beyond the current EOF, - * return the new EOF value, otherwise zero. - */ -STATIC xfs_fsize_t -xfs_ioend_new_eof( - xfs_ioend_t *ioend) -{ - xfs_inode_t *ip = XFS_I(ioend->io_inode); - xfs_fsize_t isize; - xfs_fsize_t bsize; - - bsize = ioend->io_offset + ioend->io_size; - isize = MAX(ip->i_size, ip->i_new_size); - isize = MIN(isize, bsize); - return isize > ip->i_d.di_size ? isize : 0; -} - -/* - * Update on-disk file size now that data has been written to disk. The - * current in-memory file size is i_size. If a write is beyond eof i_new_size - * will be the intended file size until i_size is updated. If this write does - * not extend all the way to the valid file size then restrict this update to - * the end of the write. - * - * This function does not block as blocking on the inode lock in IO completion - * can lead to IO completion order dependency deadlocks.. If it can't get the - * inode ilock it will return EAGAIN. Callers must handle this. - */ -STATIC int -xfs_setfilesize( - xfs_ioend_t *ioend) -{ - xfs_inode_t *ip = XFS_I(ioend->io_inode); - xfs_fsize_t isize; - - if (unlikely(ioend->io_error)) - return 0; - - if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) - return EAGAIN; - - isize = xfs_ioend_new_eof(ioend); - if (isize) { - trace_xfs_setfilesize(ip, ioend->io_offset, ioend->io_size); - ip->i_d.di_size = isize; - xfs_mark_inode_dirty(ip); - } - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - return 0; -} - -/* - * Schedule IO completion handling on the final put of an ioend. - */ -STATIC void -xfs_finish_ioend( - struct xfs_ioend *ioend) -{ - if (atomic_dec_and_test(&ioend->io_remaining)) { - if (ioend->io_type == IO_UNWRITTEN) - queue_work(xfsconvertd_workqueue, &ioend->io_work); - else - queue_work(xfsdatad_workqueue, &ioend->io_work); - } -} - -/* - * IO write completion. - */ -STATIC void -xfs_end_io( - struct work_struct *work) -{ - xfs_ioend_t *ioend = container_of(work, xfs_ioend_t, io_work); - struct xfs_inode *ip = XFS_I(ioend->io_inode); - int error = 0; - - /* - * For unwritten extents we need to issue transactions to convert a - * range to normal written extens after the data I/O has finished. - */ - if (ioend->io_type == IO_UNWRITTEN && - likely(!ioend->io_error && !XFS_FORCED_SHUTDOWN(ip->i_mount))) { - - error = xfs_iomap_write_unwritten(ip, ioend->io_offset, - ioend->io_size); - if (error) - ioend->io_error = error; - } - - /* - * We might have to update the on-disk file size after extending - * writes. - */ - error = xfs_setfilesize(ioend); - ASSERT(!error || error == EAGAIN); - - /* - * If we didn't complete processing of the ioend, requeue it to the - * tail of the workqueue for another attempt later. Otherwise destroy - * it. - */ - if (error == EAGAIN) { - atomic_inc(&ioend->io_remaining); - xfs_finish_ioend(ioend); - /* ensure we don't spin on blocked ioends */ - delay(1); - } else { - if (ioend->io_iocb) - aio_complete(ioend->io_iocb, ioend->io_result, 0); - xfs_destroy_ioend(ioend); - } -} - -/* - * Call IO completion handling in caller context on the final put of an ioend. - */ -STATIC void -xfs_finish_ioend_sync( - struct xfs_ioend *ioend) -{ - if (atomic_dec_and_test(&ioend->io_remaining)) - xfs_end_io(&ioend->io_work); -} - -/* - * Allocate and initialise an IO completion structure. - * We need to track unwritten extent write completion here initially. - * We'll need to extend this for updating the ondisk inode size later - * (vs. incore size). - */ -STATIC xfs_ioend_t * -xfs_alloc_ioend( - struct inode *inode, - unsigned int type) -{ - xfs_ioend_t *ioend; - - ioend = mempool_alloc(xfs_ioend_pool, GFP_NOFS); - - /* - * Set the count to 1 initially, which will prevent an I/O - * completion callback from happening before we have started - * all the I/O from calling the completion routine too early. - */ - atomic_set(&ioend->io_remaining, 1); - ioend->io_error = 0; - ioend->io_list = NULL; - ioend->io_type = type; - ioend->io_inode = inode; - ioend->io_buffer_head = NULL; - ioend->io_buffer_tail = NULL; - atomic_inc(&XFS_I(ioend->io_inode)->i_iocount); - ioend->io_offset = 0; - ioend->io_size = 0; - ioend->io_iocb = NULL; - ioend->io_result = 0; - - INIT_WORK(&ioend->io_work, xfs_end_io); - return ioend; -} - -STATIC int -xfs_map_blocks( - struct inode *inode, - loff_t offset, - struct xfs_bmbt_irec *imap, - int type, - int nonblocking) -{ - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - ssize_t count = 1 << inode->i_blkbits; - xfs_fileoff_t offset_fsb, end_fsb; - int error = 0; - int bmapi_flags = XFS_BMAPI_ENTIRE; - int nimaps = 1; - - if (XFS_FORCED_SHUTDOWN(mp)) - return -XFS_ERROR(EIO); - - if (type == IO_UNWRITTEN) - bmapi_flags |= XFS_BMAPI_IGSTATE; - - if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) { - if (nonblocking) - return -XFS_ERROR(EAGAIN); - xfs_ilock(ip, XFS_ILOCK_SHARED); - } - - ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE || - (ip->i_df.if_flags & XFS_IFEXTENTS)); - ASSERT(offset <= mp->m_maxioffset); - - if (offset + count > mp->m_maxioffset) - count = mp->m_maxioffset - offset; - end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count); - offset_fsb = XFS_B_TO_FSBT(mp, offset); - error = xfs_bmapi(NULL, ip, offset_fsb, end_fsb - offset_fsb, - bmapi_flags, NULL, 0, imap, &nimaps, NULL); - xfs_iunlock(ip, XFS_ILOCK_SHARED); - - if (error) - return -XFS_ERROR(error); - - if (type == IO_DELALLOC && - (!nimaps || isnullstartblock(imap->br_startblock))) { - error = xfs_iomap_write_allocate(ip, offset, count, imap); - if (!error) - trace_xfs_map_blocks_alloc(ip, offset, count, type, imap); - return -XFS_ERROR(error); - } - -#ifdef DEBUG - if (type == IO_UNWRITTEN) { - ASSERT(nimaps); - ASSERT(imap->br_startblock != HOLESTARTBLOCK); - ASSERT(imap->br_startblock != DELAYSTARTBLOCK); - } -#endif - if (nimaps) - trace_xfs_map_blocks_found(ip, offset, count, type, imap); - return 0; -} - -STATIC int -xfs_imap_valid( - struct inode *inode, - struct xfs_bmbt_irec *imap, - xfs_off_t offset) -{ - offset >>= inode->i_blkbits; - - return offset >= imap->br_startoff && - offset < imap->br_startoff + imap->br_blockcount; -} - -/* - * BIO completion handler for buffered IO. - */ -STATIC void -xfs_end_bio( - struct bio *bio, - int error) -{ - xfs_ioend_t *ioend = bio->bi_private; - - ASSERT(atomic_read(&bio->bi_cnt) >= 1); - ioend->io_error = test_bit(BIO_UPTODATE, &bio->bi_flags) ? 0 : error; - - /* Toss bio and pass work off to an xfsdatad thread */ - bio->bi_private = NULL; - bio->bi_end_io = NULL; - bio_put(bio); - - xfs_finish_ioend(ioend); -} - -STATIC void -xfs_submit_ioend_bio( - struct writeback_control *wbc, - xfs_ioend_t *ioend, - struct bio *bio) -{ - atomic_inc(&ioend->io_remaining); - bio->bi_private = ioend; - bio->bi_end_io = xfs_end_bio; - - /* - * If the I/O is beyond EOF we mark the inode dirty immediately - * but don't update the inode size until I/O completion. - */ - if (xfs_ioend_new_eof(ioend)) - xfs_mark_inode_dirty(XFS_I(ioend->io_inode)); - - submit_bio(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE, bio); -} - -STATIC struct bio * -xfs_alloc_ioend_bio( - struct buffer_head *bh) -{ - int nvecs = bio_get_nr_vecs(bh->b_bdev); - struct bio *bio = bio_alloc(GFP_NOIO, nvecs); - - ASSERT(bio->bi_private == NULL); - bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); - bio->bi_bdev = bh->b_bdev; - return bio; -} - -STATIC void -xfs_start_buffer_writeback( - struct buffer_head *bh) -{ - ASSERT(buffer_mapped(bh)); - ASSERT(buffer_locked(bh)); - ASSERT(!buffer_delay(bh)); - ASSERT(!buffer_unwritten(bh)); - - mark_buffer_async_write(bh); - set_buffer_uptodate(bh); - clear_buffer_dirty(bh); -} - -STATIC void -xfs_start_page_writeback( - struct page *page, - int clear_dirty, - int buffers) -{ - ASSERT(PageLocked(page)); - ASSERT(!PageWriteback(page)); - if (clear_dirty) - clear_page_dirty_for_io(page); - set_page_writeback(page); - unlock_page(page); - /* If no buffers on the page are to be written, finish it here */ - if (!buffers) - end_page_writeback(page); -} - -static inline int bio_add_buffer(struct bio *bio, struct buffer_head *bh) -{ - return bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh)); -} - -/* - * Submit all of the bios for all of the ioends we have saved up, covering the - * initial writepage page and also any probed pages. - * - * Because we may have multiple ioends spanning a page, we need to start - * writeback on all the buffers before we submit them for I/O. If we mark the - * buffers as we got, then we can end up with a page that only has buffers - * marked async write and I/O complete on can occur before we mark the other - * buffers async write. - * - * The end result of this is that we trip a bug in end_page_writeback() because - * we call it twice for the one page as the code in end_buffer_async_write() - * assumes that all buffers on the page are started at the same time. - * - * The fix is two passes across the ioend list - one to start writeback on the - * buffer_heads, and then submit them for I/O on the second pass. - */ -STATIC void -xfs_submit_ioend( - struct writeback_control *wbc, - xfs_ioend_t *ioend) -{ - xfs_ioend_t *head = ioend; - xfs_ioend_t *next; - struct buffer_head *bh; - struct bio *bio; - sector_t lastblock = 0; - - /* Pass 1 - start writeback */ - do { - next = ioend->io_list; - for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) - xfs_start_buffer_writeback(bh); - } while ((ioend = next) != NULL); - - /* Pass 2 - submit I/O */ - ioend = head; - do { - next = ioend->io_list; - bio = NULL; - - for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) { - - if (!bio) { - retry: - bio = xfs_alloc_ioend_bio(bh); - } else if (bh->b_blocknr != lastblock + 1) { - xfs_submit_ioend_bio(wbc, ioend, bio); - goto retry; - } - - if (bio_add_buffer(bio, bh) != bh->b_size) { - xfs_submit_ioend_bio(wbc, ioend, bio); - goto retry; - } - - lastblock = bh->b_blocknr; - } - if (bio) - xfs_submit_ioend_bio(wbc, ioend, bio); - xfs_finish_ioend(ioend); - } while ((ioend = next) != NULL); -} - -/* - * Cancel submission of all buffer_heads so far in this endio. - * Toss the endio too. Only ever called for the initial page - * in a writepage request, so only ever one page. - */ -STATIC void -xfs_cancel_ioend( - xfs_ioend_t *ioend) -{ - xfs_ioend_t *next; - struct buffer_head *bh, *next_bh; - - do { - next = ioend->io_list; - bh = ioend->io_buffer_head; - do { - next_bh = bh->b_private; - clear_buffer_async_write(bh); - unlock_buffer(bh); - } while ((bh = next_bh) != NULL); - - xfs_ioend_wake(XFS_I(ioend->io_inode)); - mempool_free(ioend, xfs_ioend_pool); - } while ((ioend = next) != NULL); -} - -/* - * Test to see if we've been building up a completion structure for - * earlier buffers -- if so, we try to append to this ioend if we - * can, otherwise we finish off any current ioend and start another. - * Return true if we've finished the given ioend. - */ -STATIC void -xfs_add_to_ioend( - struct inode *inode, - struct buffer_head *bh, - xfs_off_t offset, - unsigned int type, - xfs_ioend_t **result, - int need_ioend) -{ - xfs_ioend_t *ioend = *result; - - if (!ioend || need_ioend || type != ioend->io_type) { - xfs_ioend_t *previous = *result; - - ioend = xfs_alloc_ioend(inode, type); - ioend->io_offset = offset; - ioend->io_buffer_head = bh; - ioend->io_buffer_tail = bh; - if (previous) - previous->io_list = ioend; - *result = ioend; - } else { - ioend->io_buffer_tail->b_private = bh; - ioend->io_buffer_tail = bh; - } - - bh->b_private = NULL; - ioend->io_size += bh->b_size; -} - -STATIC void -xfs_map_buffer( - struct inode *inode, - struct buffer_head *bh, - struct xfs_bmbt_irec *imap, - xfs_off_t offset) -{ - sector_t bn; - struct xfs_mount *m = XFS_I(inode)->i_mount; - xfs_off_t iomap_offset = XFS_FSB_TO_B(m, imap->br_startoff); - xfs_daddr_t iomap_bn = xfs_fsb_to_db(XFS_I(inode), imap->br_startblock); - - ASSERT(imap->br_startblock != HOLESTARTBLOCK); - ASSERT(imap->br_startblock != DELAYSTARTBLOCK); - - bn = (iomap_bn >> (inode->i_blkbits - BBSHIFT)) + - ((offset - iomap_offset) >> inode->i_blkbits); - - ASSERT(bn || XFS_IS_REALTIME_INODE(XFS_I(inode))); - - bh->b_blocknr = bn; - set_buffer_mapped(bh); -} - -STATIC void -xfs_map_at_offset( - struct inode *inode, - struct buffer_head *bh, - struct xfs_bmbt_irec *imap, - xfs_off_t offset) -{ - ASSERT(imap->br_startblock != HOLESTARTBLOCK); - ASSERT(imap->br_startblock != DELAYSTARTBLOCK); - - xfs_map_buffer(inode, bh, imap, offset); - set_buffer_mapped(bh); - clear_buffer_delay(bh); - clear_buffer_unwritten(bh); -} - -/* - * Test if a given page is suitable for writing as part of an unwritten - * or delayed allocate extent. - */ -STATIC int -xfs_is_delayed_page( - struct page *page, - unsigned int type) -{ - if (PageWriteback(page)) - return 0; - - if (page->mapping && page_has_buffers(page)) { - struct buffer_head *bh, *head; - int acceptable = 0; - - bh = head = page_buffers(page); - do { - if (buffer_unwritten(bh)) - acceptable = (type == IO_UNWRITTEN); - else if (buffer_delay(bh)) - acceptable = (type == IO_DELALLOC); - else if (buffer_dirty(bh) && buffer_mapped(bh)) - acceptable = (type == IO_OVERWRITE); - else - break; - } while ((bh = bh->b_this_page) != head); - - if (acceptable) - return 1; - } - - return 0; -} - -/* - * Allocate & map buffers for page given the extent map. Write it out. - * except for the original page of a writepage, this is called on - * delalloc/unwritten pages only, for the original page it is possible - * that the page has no mapping at all. - */ -STATIC int -xfs_convert_page( - struct inode *inode, - struct page *page, - loff_t tindex, - struct xfs_bmbt_irec *imap, - xfs_ioend_t **ioendp, - struct writeback_control *wbc) -{ - struct buffer_head *bh, *head; - xfs_off_t end_offset; - unsigned long p_offset; - unsigned int type; - int len, page_dirty; - int count = 0, done = 0, uptodate = 1; - xfs_off_t offset = page_offset(page); - - if (page->index != tindex) - goto fail; - if (!trylock_page(page)) - goto fail; - if (PageWriteback(page)) - goto fail_unlock_page; - if (page->mapping != inode->i_mapping) - goto fail_unlock_page; - if (!xfs_is_delayed_page(page, (*ioendp)->io_type)) - goto fail_unlock_page; - - /* - * page_dirty is initially a count of buffers on the page before - * EOF and is decremented as we move each into a cleanable state. - * - * Derivation: - * - * End offset is the highest offset that this page should represent. - * If we are on the last page, (end_offset & (PAGE_CACHE_SIZE - 1)) - * will evaluate non-zero and be less than PAGE_CACHE_SIZE and - * hence give us the correct page_dirty count. On any other page, - * it will be zero and in that case we need page_dirty to be the - * count of buffers on the page. - */ - end_offset = min_t(unsigned long long, - (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, - i_size_read(inode)); - - len = 1 << inode->i_blkbits; - p_offset = min_t(unsigned long, end_offset & (PAGE_CACHE_SIZE - 1), - PAGE_CACHE_SIZE); - p_offset = p_offset ? roundup(p_offset, len) : PAGE_CACHE_SIZE; - page_dirty = p_offset / len; - - bh = head = page_buffers(page); - do { - if (offset >= end_offset) - break; - if (!buffer_uptodate(bh)) - uptodate = 0; - if (!(PageUptodate(page) || buffer_uptodate(bh))) { - done = 1; - continue; - } - - if (buffer_unwritten(bh) || buffer_delay(bh) || - buffer_mapped(bh)) { - if (buffer_unwritten(bh)) - type = IO_UNWRITTEN; - else if (buffer_delay(bh)) - type = IO_DELALLOC; - else - type = IO_OVERWRITE; - - if (!xfs_imap_valid(inode, imap, offset)) { - done = 1; - continue; - } - - lock_buffer(bh); - if (type != IO_OVERWRITE) - xfs_map_at_offset(inode, bh, imap, offset); - xfs_add_to_ioend(inode, bh, offset, type, - ioendp, done); - - page_dirty--; - count++; - } else { - done = 1; - } - } while (offset += len, (bh = bh->b_this_page) != head); - - if (uptodate && bh == head) - SetPageUptodate(page); - - if (count) { - if (--wbc->nr_to_write <= 0 && - wbc->sync_mode == WB_SYNC_NONE) - done = 1; - } - xfs_start_page_writeback(page, !page_dirty, count); - - return done; - fail_unlock_page: - unlock_page(page); - fail: - return 1; -} - -/* - * Convert & write out a cluster of pages in the same extent as defined - * by mp and following the start page. - */ -STATIC void -xfs_cluster_write( - struct inode *inode, - pgoff_t tindex, - struct xfs_bmbt_irec *imap, - xfs_ioend_t **ioendp, - struct writeback_control *wbc, - pgoff_t tlast) -{ - struct pagevec pvec; - int done = 0, i; - - pagevec_init(&pvec, 0); - while (!done && tindex <= tlast) { - unsigned len = min_t(pgoff_t, PAGEVEC_SIZE, tlast - tindex + 1); - - if (!pagevec_lookup(&pvec, inode->i_mapping, tindex, len)) - break; - - for (i = 0; i < pagevec_count(&pvec); i++) { - done = xfs_convert_page(inode, pvec.pages[i], tindex++, - imap, ioendp, wbc); - if (done) - break; - } - - pagevec_release(&pvec); - cond_resched(); - } -} - -STATIC void -xfs_vm_invalidatepage( - struct page *page, - unsigned long offset) -{ - trace_xfs_invalidatepage(page->mapping->host, page, offset); - block_invalidatepage(page, offset); -} - -/* - * If the page has delalloc buffers on it, we need to punch them out before we - * invalidate the page. If we don't, we leave a stale delalloc mapping on the - * inode that can trip a BUG() in xfs_get_blocks() later on if a direct IO read - * is done on that same region - the delalloc extent is returned when none is - * supposed to be there. - * - * We prevent this by truncating away the delalloc regions on the page before - * invalidating it. Because they are delalloc, we can do this without needing a - * transaction. Indeed - if we get ENOSPC errors, we have to be able to do this - * truncation without a transaction as there is no space left for block - * reservation (typically why we see a ENOSPC in writeback). - * - * This is not a performance critical path, so for now just do the punching a - * buffer head at a time. - */ -STATIC void -xfs_aops_discard_page( - struct page *page) -{ - struct inode *inode = page->mapping->host; - struct xfs_inode *ip = XFS_I(inode); - struct buffer_head *bh, *head; - loff_t offset = page_offset(page); - - if (!xfs_is_delayed_page(page, IO_DELALLOC)) - goto out_invalidate; - - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - goto out_invalidate; - - xfs_alert(ip->i_mount, - "page discard on page %p, inode 0x%llx, offset %llu.", - page, ip->i_ino, offset); - - xfs_ilock(ip, XFS_ILOCK_EXCL); - bh = head = page_buffers(page); - do { - int error; - xfs_fileoff_t start_fsb; - - if (!buffer_delay(bh)) - goto next_buffer; - - start_fsb = XFS_B_TO_FSBT(ip->i_mount, offset); - error = xfs_bmap_punch_delalloc_range(ip, start_fsb, 1); - if (error) { - /* something screwed, just bail */ - if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { - xfs_alert(ip->i_mount, - "page discard unable to remove delalloc mapping."); - } - break; - } -next_buffer: - offset += 1 << inode->i_blkbits; - - } while ((bh = bh->b_this_page) != head); - - xfs_iunlock(ip, XFS_ILOCK_EXCL); -out_invalidate: - xfs_vm_invalidatepage(page, 0); - return; -} - -/* - * Write out a dirty page. - * - * For delalloc space on the page we need to allocate space and flush it. - * For unwritten space on the page we need to start the conversion to - * regular allocated space. - * For any other dirty buffer heads on the page we should flush them. - */ -STATIC int -xfs_vm_writepage( - struct page *page, - struct writeback_control *wbc) -{ - struct inode *inode = page->mapping->host; - struct buffer_head *bh, *head; - struct xfs_bmbt_irec imap; - xfs_ioend_t *ioend = NULL, *iohead = NULL; - loff_t offset; - unsigned int type; - __uint64_t end_offset; - pgoff_t end_index, last_index; - ssize_t len; - int err, imap_valid = 0, uptodate = 1; - int count = 0; - int nonblocking = 0; - - trace_xfs_writepage(inode, page, 0); - - ASSERT(page_has_buffers(page)); - - /* - * Refuse to write the page out if we are called from reclaim context. - * - * This avoids stack overflows when called from deeply used stacks in - * random callers for direct reclaim or memcg reclaim. We explicitly - * allow reclaim from kswapd as the stack usage there is relatively low. - * - * This should really be done by the core VM, but until that happens - * filesystems like XFS, btrfs and ext4 have to take care of this - * by themselves. - */ - if ((current->flags & (PF_MEMALLOC|PF_KSWAPD)) == PF_MEMALLOC) - goto redirty; - - /* - * Given that we do not allow direct reclaim to call us, we should - * never be called while in a filesystem transaction. - */ - if (WARN_ON(current->flags & PF_FSTRANS)) - goto redirty; - - /* Is this page beyond the end of the file? */ - offset = i_size_read(inode); - end_index = offset >> PAGE_CACHE_SHIFT; - last_index = (offset - 1) >> PAGE_CACHE_SHIFT; - if (page->index >= end_index) { - if ((page->index >= end_index + 1) || - !(i_size_read(inode) & (PAGE_CACHE_SIZE - 1))) { - unlock_page(page); - return 0; - } - } - - end_offset = min_t(unsigned long long, - (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, - offset); - len = 1 << inode->i_blkbits; - - bh = head = page_buffers(page); - offset = page_offset(page); - type = IO_OVERWRITE; - - if (wbc->sync_mode == WB_SYNC_NONE) - nonblocking = 1; - - do { - int new_ioend = 0; - - if (offset >= end_offset) - break; - if (!buffer_uptodate(bh)) - uptodate = 0; - - /* - * set_page_dirty dirties all buffers in a page, independent - * of their state. The dirty state however is entirely - * meaningless for holes (!mapped && uptodate), so skip - * buffers covering holes here. - */ - if (!buffer_mapped(bh) && buffer_uptodate(bh)) { - imap_valid = 0; - continue; - } - - if (buffer_unwritten(bh)) { - if (type != IO_UNWRITTEN) { - type = IO_UNWRITTEN; - imap_valid = 0; - } - } else if (buffer_delay(bh)) { - if (type != IO_DELALLOC) { - type = IO_DELALLOC; - imap_valid = 0; - } - } else if (buffer_uptodate(bh)) { - if (type != IO_OVERWRITE) { - type = IO_OVERWRITE; - imap_valid = 0; - } - } else { - if (PageUptodate(page)) { - ASSERT(buffer_mapped(bh)); - imap_valid = 0; - } - continue; - } - - if (imap_valid) - imap_valid = xfs_imap_valid(inode, &imap, offset); - if (!imap_valid) { - /* - * If we didn't have a valid mapping then we need to - * put the new mapping into a separate ioend structure. - * This ensures non-contiguous extents always have - * separate ioends, which is particularly important - * for unwritten extent conversion at I/O completion - * time. - */ - new_ioend = 1; - err = xfs_map_blocks(inode, offset, &imap, type, - nonblocking); - if (err) - goto error; - imap_valid = xfs_imap_valid(inode, &imap, offset); - } - if (imap_valid) { - lock_buffer(bh); - if (type != IO_OVERWRITE) - xfs_map_at_offset(inode, bh, &imap, offset); - xfs_add_to_ioend(inode, bh, offset, type, &ioend, - new_ioend); - count++; - } - - if (!iohead) - iohead = ioend; - - } while (offset += len, ((bh = bh->b_this_page) != head)); - - if (uptodate && bh == head) - SetPageUptodate(page); - - xfs_start_page_writeback(page, 1, count); - - if (ioend && imap_valid) { - xfs_off_t end_index; - - end_index = imap.br_startoff + imap.br_blockcount; - - /* to bytes */ - end_index <<= inode->i_blkbits; - - /* to pages */ - end_index = (end_index - 1) >> PAGE_CACHE_SHIFT; - - /* check against file size */ - if (end_index > last_index) - end_index = last_index; - - xfs_cluster_write(inode, page->index + 1, &imap, &ioend, - wbc, end_index); - } - - if (iohead) - xfs_submit_ioend(wbc, iohead); - - return 0; - -error: - if (iohead) - xfs_cancel_ioend(iohead); - - if (err == -EAGAIN) - goto redirty; - - xfs_aops_discard_page(page); - ClearPageUptodate(page); - unlock_page(page); - return err; - -redirty: - redirty_page_for_writepage(wbc, page); - unlock_page(page); - return 0; -} - -STATIC int -xfs_vm_writepages( - struct address_space *mapping, - struct writeback_control *wbc) -{ - xfs_iflags_clear(XFS_I(mapping->host), XFS_ITRUNCATED); - return generic_writepages(mapping, wbc); -} - -/* - * Called to move a page into cleanable state - and from there - * to be released. The page should already be clean. We always - * have buffer heads in this call. - * - * Returns 1 if the page is ok to release, 0 otherwise. - */ -STATIC int -xfs_vm_releasepage( - struct page *page, - gfp_t gfp_mask) -{ - int delalloc, unwritten; - - trace_xfs_releasepage(page->mapping->host, page, 0); - - xfs_count_page_state(page, &delalloc, &unwritten); - - if (WARN_ON(delalloc)) - return 0; - if (WARN_ON(unwritten)) - return 0; - - return try_to_free_buffers(page); -} - -STATIC int -__xfs_get_blocks( - struct inode *inode, - sector_t iblock, - struct buffer_head *bh_result, - int create, - int direct) -{ - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - xfs_fileoff_t offset_fsb, end_fsb; - int error = 0; - int lockmode = 0; - struct xfs_bmbt_irec imap; - int nimaps = 1; - xfs_off_t offset; - ssize_t size; - int new = 0; - - if (XFS_FORCED_SHUTDOWN(mp)) - return -XFS_ERROR(EIO); - - offset = (xfs_off_t)iblock << inode->i_blkbits; - ASSERT(bh_result->b_size >= (1 << inode->i_blkbits)); - size = bh_result->b_size; - - if (!create && direct && offset >= i_size_read(inode)) - return 0; - - if (create) { - lockmode = XFS_ILOCK_EXCL; - xfs_ilock(ip, lockmode); - } else { - lockmode = xfs_ilock_map_shared(ip); - } - - ASSERT(offset <= mp->m_maxioffset); - if (offset + size > mp->m_maxioffset) - size = mp->m_maxioffset - offset; - end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + size); - offset_fsb = XFS_B_TO_FSBT(mp, offset); - - error = xfs_bmapi(NULL, ip, offset_fsb, end_fsb - offset_fsb, - XFS_BMAPI_ENTIRE, NULL, 0, &imap, &nimaps, NULL); - if (error) - goto out_unlock; - - if (create && - (!nimaps || - (imap.br_startblock == HOLESTARTBLOCK || - imap.br_startblock == DELAYSTARTBLOCK))) { - if (direct) { - error = xfs_iomap_write_direct(ip, offset, size, - &imap, nimaps); - } else { - error = xfs_iomap_write_delay(ip, offset, size, &imap); - } - if (error) - goto out_unlock; - - trace_xfs_get_blocks_alloc(ip, offset, size, 0, &imap); - } else if (nimaps) { - trace_xfs_get_blocks_found(ip, offset, size, 0, &imap); - } else { - trace_xfs_get_blocks_notfound(ip, offset, size); - goto out_unlock; - } - xfs_iunlock(ip, lockmode); - - if (imap.br_startblock != HOLESTARTBLOCK && - imap.br_startblock != DELAYSTARTBLOCK) { - /* - * For unwritten extents do not report a disk address on - * the read case (treat as if we're reading into a hole). - */ - if (create || !ISUNWRITTEN(&imap)) - xfs_map_buffer(inode, bh_result, &imap, offset); - if (create && ISUNWRITTEN(&imap)) { - if (direct) - bh_result->b_private = inode; - set_buffer_unwritten(bh_result); - } - } - - /* - * If this is a realtime file, data may be on a different device. - * to that pointed to from the buffer_head b_bdev currently. - */ - bh_result->b_bdev = xfs_find_bdev_for_inode(inode); - - /* - * If we previously allocated a block out beyond eof and we are now - * coming back to use it then we will need to flag it as new even if it - * has a disk address. - * - * With sub-block writes into unwritten extents we also need to mark - * the buffer as new so that the unwritten parts of the buffer gets - * correctly zeroed. - */ - if (create && - ((!buffer_mapped(bh_result) && !buffer_uptodate(bh_result)) || - (offset >= i_size_read(inode)) || - (new || ISUNWRITTEN(&imap)))) - set_buffer_new(bh_result); - - if (imap.br_startblock == DELAYSTARTBLOCK) { - BUG_ON(direct); - if (create) { - set_buffer_uptodate(bh_result); - set_buffer_mapped(bh_result); - set_buffer_delay(bh_result); - } - } - - /* - * If this is O_DIRECT or the mpage code calling tell them how large - * the mapping is, so that we can avoid repeated get_blocks calls. - */ - if (direct || size > (1 << inode->i_blkbits)) { - xfs_off_t mapping_size; - - mapping_size = imap.br_startoff + imap.br_blockcount - iblock; - mapping_size <<= inode->i_blkbits; - - ASSERT(mapping_size > 0); - if (mapping_size > size) - mapping_size = size; - if (mapping_size > LONG_MAX) - mapping_size = LONG_MAX; - - bh_result->b_size = mapping_size; - } - - return 0; - -out_unlock: - xfs_iunlock(ip, lockmode); - return -error; -} - -int -xfs_get_blocks( - struct inode *inode, - sector_t iblock, - struct buffer_head *bh_result, - int create) -{ - return __xfs_get_blocks(inode, iblock, bh_result, create, 0); -} - -STATIC int -xfs_get_blocks_direct( - struct inode *inode, - sector_t iblock, - struct buffer_head *bh_result, - int create) -{ - return __xfs_get_blocks(inode, iblock, bh_result, create, 1); -} - -/* - * Complete a direct I/O write request. - * - * If the private argument is non-NULL __xfs_get_blocks signals us that we - * need to issue a transaction to convert the range from unwritten to written - * extents. In case this is regular synchronous I/O we just call xfs_end_io - * to do this and we are done. But in case this was a successful AIO - * request this handler is called from interrupt context, from which we - * can't start transactions. In that case offload the I/O completion to - * the workqueues we also use for buffered I/O completion. - */ -STATIC void -xfs_end_io_direct_write( - struct kiocb *iocb, - loff_t offset, - ssize_t size, - void *private, - int ret, - bool is_async) -{ - struct xfs_ioend *ioend = iocb->private; - - /* - * blockdev_direct_IO can return an error even after the I/O - * completion handler was called. Thus we need to protect - * against double-freeing. - */ - iocb->private = NULL; - - ioend->io_offset = offset; - ioend->io_size = size; - if (private && size > 0) - ioend->io_type = IO_UNWRITTEN; - - if (is_async) { - /* - * If we are converting an unwritten extent we need to delay - * the AIO completion until after the unwrittent extent - * conversion has completed, otherwise do it ASAP. - */ - if (ioend->io_type == IO_UNWRITTEN) { - ioend->io_iocb = iocb; - ioend->io_result = ret; - } else { - aio_complete(iocb, ret, 0); - } - xfs_finish_ioend(ioend); - } else { - xfs_finish_ioend_sync(ioend); - } - - /* XXX: probably should move into the real I/O completion handler */ - inode_dio_done(ioend->io_inode); -} - -STATIC ssize_t -xfs_vm_direct_IO( - int rw, - struct kiocb *iocb, - const struct iovec *iov, - loff_t offset, - unsigned long nr_segs) -{ - struct inode *inode = iocb->ki_filp->f_mapping->host; - struct block_device *bdev = xfs_find_bdev_for_inode(inode); - ssize_t ret; - - if (rw & WRITE) { - iocb->private = xfs_alloc_ioend(inode, IO_DIRECT); - - ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, - offset, nr_segs, - xfs_get_blocks_direct, - xfs_end_io_direct_write, NULL, 0); - if (ret != -EIOCBQUEUED && iocb->private) - xfs_destroy_ioend(iocb->private); - } else { - ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, - offset, nr_segs, - xfs_get_blocks_direct, - NULL, NULL, 0); - } - - return ret; -} - -STATIC void -xfs_vm_write_failed( - struct address_space *mapping, - loff_t to) -{ - struct inode *inode = mapping->host; - - if (to > inode->i_size) { - /* - * punch out the delalloc blocks we have already allocated. We - * don't call xfs_setattr() to do this as we may be in the - * middle of a multi-iovec write and so the vfs inode->i_size - * will not match the xfs ip->i_size and so it will zero too - * much. Hence we jus truncate the page cache to zero what is - * necessary and punch the delalloc blocks directly. - */ - struct xfs_inode *ip = XFS_I(inode); - xfs_fileoff_t start_fsb; - xfs_fileoff_t end_fsb; - int error; - - truncate_pagecache(inode, to, inode->i_size); - - /* - * Check if there are any blocks that are outside of i_size - * that need to be trimmed back. - */ - start_fsb = XFS_B_TO_FSB(ip->i_mount, inode->i_size) + 1; - end_fsb = XFS_B_TO_FSB(ip->i_mount, to); - if (end_fsb <= start_fsb) - return; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_bmap_punch_delalloc_range(ip, start_fsb, - end_fsb - start_fsb); - if (error) { - /* something screwed, just bail */ - if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { - xfs_alert(ip->i_mount, - "xfs_vm_write_failed: unable to clean up ino %lld", - ip->i_ino); - } - } - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } -} - -STATIC int -xfs_vm_write_begin( - struct file *file, - struct address_space *mapping, - loff_t pos, - unsigned len, - unsigned flags, - struct page **pagep, - void **fsdata) -{ - int ret; - - ret = block_write_begin(mapping, pos, len, flags | AOP_FLAG_NOFS, - pagep, xfs_get_blocks); - if (unlikely(ret)) - xfs_vm_write_failed(mapping, pos + len); - return ret; -} - -STATIC int -xfs_vm_write_end( - struct file *file, - struct address_space *mapping, - loff_t pos, - unsigned len, - unsigned copied, - struct page *page, - void *fsdata) -{ - int ret; - - ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); - if (unlikely(ret < len)) - xfs_vm_write_failed(mapping, pos + len); - return ret; -} - -STATIC sector_t -xfs_vm_bmap( - struct address_space *mapping, - sector_t block) -{ - struct inode *inode = (struct inode *)mapping->host; - struct xfs_inode *ip = XFS_I(inode); - - trace_xfs_vm_bmap(XFS_I(inode)); - xfs_ilock(ip, XFS_IOLOCK_SHARED); - xfs_flush_pages(ip, (xfs_off_t)0, -1, 0, FI_REMAPF); - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - return generic_block_bmap(mapping, block, xfs_get_blocks); -} - -STATIC int -xfs_vm_readpage( - struct file *unused, - struct page *page) -{ - return mpage_readpage(page, xfs_get_blocks); -} - -STATIC int -xfs_vm_readpages( - struct file *unused, - struct address_space *mapping, - struct list_head *pages, - unsigned nr_pages) -{ - return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks); -} - -const struct address_space_operations xfs_address_space_operations = { - .readpage = xfs_vm_readpage, - .readpages = xfs_vm_readpages, - .writepage = xfs_vm_writepage, - .writepages = xfs_vm_writepages, - .releasepage = xfs_vm_releasepage, - .invalidatepage = xfs_vm_invalidatepage, - .write_begin = xfs_vm_write_begin, - .write_end = xfs_vm_write_end, - .bmap = xfs_vm_bmap, - .direct_IO = xfs_vm_direct_IO, - .migratepage = buffer_migrate_page, - .is_partially_uptodate = block_is_partially_uptodate, - .error_remove_page = generic_error_remove_page, -}; diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/linux-2.6/xfs_aops.h deleted file mode 100644 index 71f721e1a71f..000000000000 --- a/fs/xfs/linux-2.6/xfs_aops.h +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright (c) 2005-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_AOPS_H__ -#define __XFS_AOPS_H__ - -extern struct workqueue_struct *xfsdatad_workqueue; -extern struct workqueue_struct *xfsconvertd_workqueue; -extern mempool_t *xfs_ioend_pool; - -/* - * Types of I/O for bmap clustering and I/O completion tracking. - */ -enum { - IO_DIRECT = 0, /* special case for direct I/O ioends */ - IO_DELALLOC, /* mapping covers delalloc region */ - IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */ - IO_OVERWRITE, /* mapping covers already allocated extent */ -}; - -#define XFS_IO_TYPES \ - { 0, "" }, \ - { IO_DELALLOC, "delalloc" }, \ - { IO_UNWRITTEN, "unwritten" }, \ - { IO_OVERWRITE, "overwrite" } - -/* - * xfs_ioend struct manages large extent writes for XFS. - * It can manage several multi-page bio's at once. - */ -typedef struct xfs_ioend { - struct xfs_ioend *io_list; /* next ioend in chain */ - unsigned int io_type; /* delalloc / unwritten */ - int io_error; /* I/O error code */ - atomic_t io_remaining; /* hold count */ - struct inode *io_inode; /* file being written to */ - struct buffer_head *io_buffer_head;/* buffer linked list head */ - struct buffer_head *io_buffer_tail;/* buffer linked list tail */ - size_t io_size; /* size of the extent */ - xfs_off_t io_offset; /* offset in the file */ - struct work_struct io_work; /* xfsdatad work queue */ - struct kiocb *io_iocb; - int io_result; -} xfs_ioend_t; - -extern const struct address_space_operations xfs_address_space_operations; -extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int); - -extern void xfs_ioend_init(void); -extern void xfs_ioend_wait(struct xfs_inode *); - -extern void xfs_count_page_state(struct page *, int *, int *); - -#endif /* __XFS_AOPS_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c deleted file mode 100644 index c57836dc778f..000000000000 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ /dev/null @@ -1,1876 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "xfs_sb.h" -#include "xfs_inum.h" -#include "xfs_log.h" -#include "xfs_ag.h" -#include "xfs_mount.h" -#include "xfs_trace.h" - -static kmem_zone_t *xfs_buf_zone; -STATIC int xfsbufd(void *); -STATIC void xfs_buf_delwri_queue(xfs_buf_t *, int); - -static struct workqueue_struct *xfslogd_workqueue; -struct workqueue_struct *xfsdatad_workqueue; -struct workqueue_struct *xfsconvertd_workqueue; - -#ifdef XFS_BUF_LOCK_TRACKING -# define XB_SET_OWNER(bp) ((bp)->b_last_holder = current->pid) -# define XB_CLEAR_OWNER(bp) ((bp)->b_last_holder = -1) -# define XB_GET_OWNER(bp) ((bp)->b_last_holder) -#else -# define XB_SET_OWNER(bp) do { } while (0) -# define XB_CLEAR_OWNER(bp) do { } while (0) -# define XB_GET_OWNER(bp) do { } while (0) -#endif - -#define xb_to_gfp(flags) \ - ((((flags) & XBF_READ_AHEAD) ? __GFP_NORETRY : \ - ((flags) & XBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL) | __GFP_NOWARN) - -#define xb_to_km(flags) \ - (((flags) & XBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP) - -#define xfs_buf_allocate(flags) \ - kmem_zone_alloc(xfs_buf_zone, xb_to_km(flags)) -#define xfs_buf_deallocate(bp) \ - kmem_zone_free(xfs_buf_zone, (bp)); - -static inline int -xfs_buf_is_vmapped( - struct xfs_buf *bp) -{ - /* - * Return true if the buffer is vmapped. - * - * The XBF_MAPPED flag is set if the buffer should be mapped, but the - * code is clever enough to know it doesn't have to map a single page, - * so the check has to be both for XBF_MAPPED and bp->b_page_count > 1. - */ - return (bp->b_flags & XBF_MAPPED) && bp->b_page_count > 1; -} - -static inline int -xfs_buf_vmap_len( - struct xfs_buf *bp) -{ - return (bp->b_page_count * PAGE_SIZE) - bp->b_offset; -} - -/* - * xfs_buf_lru_add - add a buffer to the LRU. - * - * The LRU takes a new reference to the buffer so that it will only be freed - * once the shrinker takes the buffer off the LRU. - */ -STATIC void -xfs_buf_lru_add( - struct xfs_buf *bp) -{ - struct xfs_buftarg *btp = bp->b_target; - - spin_lock(&btp->bt_lru_lock); - if (list_empty(&bp->b_lru)) { - atomic_inc(&bp->b_hold); - list_add_tail(&bp->b_lru, &btp->bt_lru); - btp->bt_lru_nr++; - } - spin_unlock(&btp->bt_lru_lock); -} - -/* - * xfs_buf_lru_del - remove a buffer from the LRU - * - * The unlocked check is safe here because it only occurs when there are not - * b_lru_ref counts left on the inode under the pag->pag_buf_lock. it is there - * to optimise the shrinker removing the buffer from the LRU and calling - * xfs_buf_free(). i.e. it removes an unnecessary round trip on the - * bt_lru_lock. - */ -STATIC void -xfs_buf_lru_del( - struct xfs_buf *bp) -{ - struct xfs_buftarg *btp = bp->b_target; - - if (list_empty(&bp->b_lru)) - return; - - spin_lock(&btp->bt_lru_lock); - if (!list_empty(&bp->b_lru)) { - list_del_init(&bp->b_lru); - btp->bt_lru_nr--; - } - spin_unlock(&btp->bt_lru_lock); -} - -/* - * When we mark a buffer stale, we remove the buffer from the LRU and clear the - * b_lru_ref count so that the buffer is freed immediately when the buffer - * reference count falls to zero. If the buffer is already on the LRU, we need - * to remove the reference that LRU holds on the buffer. - * - * This prevents build-up of stale buffers on the LRU. - */ -void -xfs_buf_stale( - struct xfs_buf *bp) -{ - bp->b_flags |= XBF_STALE; - atomic_set(&(bp)->b_lru_ref, 0); - if (!list_empty(&bp->b_lru)) { - struct xfs_buftarg *btp = bp->b_target; - - spin_lock(&btp->bt_lru_lock); - if (!list_empty(&bp->b_lru)) { - list_del_init(&bp->b_lru); - btp->bt_lru_nr--; - atomic_dec(&bp->b_hold); - } - spin_unlock(&btp->bt_lru_lock); - } - ASSERT(atomic_read(&bp->b_hold) >= 1); -} - -STATIC void -_xfs_buf_initialize( - xfs_buf_t *bp, - xfs_buftarg_t *target, - xfs_off_t range_base, - size_t range_length, - xfs_buf_flags_t flags) -{ - /* - * We don't want certain flags to appear in b_flags. - */ - flags &= ~(XBF_LOCK|XBF_MAPPED|XBF_DONT_BLOCK|XBF_READ_AHEAD); - - memset(bp, 0, sizeof(xfs_buf_t)); - atomic_set(&bp->b_hold, 1); - atomic_set(&bp->b_lru_ref, 1); - init_completion(&bp->b_iowait); - INIT_LIST_HEAD(&bp->b_lru); - INIT_LIST_HEAD(&bp->b_list); - RB_CLEAR_NODE(&bp->b_rbnode); - sema_init(&bp->b_sema, 0); /* held, no waiters */ - XB_SET_OWNER(bp); - bp->b_target = target; - bp->b_file_offset = range_base; - /* - * Set buffer_length and count_desired to the same value initially. - * I/O routines should use count_desired, which will be the same in - * most cases but may be reset (e.g. XFS recovery). - */ - bp->b_buffer_length = bp->b_count_desired = range_length; - bp->b_flags = flags; - bp->b_bn = XFS_BUF_DADDR_NULL; - atomic_set(&bp->b_pin_count, 0); - init_waitqueue_head(&bp->b_waiters); - - XFS_STATS_INC(xb_create); - - trace_xfs_buf_init(bp, _RET_IP_); -} - -/* - * Allocate a page array capable of holding a specified number - * of pages, and point the page buf at it. - */ -STATIC int -_xfs_buf_get_pages( - xfs_buf_t *bp, - int page_count, - xfs_buf_flags_t flags) -{ - /* Make sure that we have a page list */ - if (bp->b_pages == NULL) { - bp->b_offset = xfs_buf_poff(bp->b_file_offset); - bp->b_page_count = page_count; - if (page_count <= XB_PAGES) { - bp->b_pages = bp->b_page_array; - } else { - bp->b_pages = kmem_alloc(sizeof(struct page *) * - page_count, xb_to_km(flags)); - if (bp->b_pages == NULL) - return -ENOMEM; - } - memset(bp->b_pages, 0, sizeof(struct page *) * page_count); - } - return 0; -} - -/* - * Frees b_pages if it was allocated. - */ -STATIC void -_xfs_buf_free_pages( - xfs_buf_t *bp) -{ - if (bp->b_pages != bp->b_page_array) { - kmem_free(bp->b_pages); - bp->b_pages = NULL; - } -} - -/* - * Releases the specified buffer. - * - * The modification state of any associated pages is left unchanged. - * The buffer most not be on any hash - use xfs_buf_rele instead for - * hashed and refcounted buffers - */ -void -xfs_buf_free( - xfs_buf_t *bp) -{ - trace_xfs_buf_free(bp, _RET_IP_); - - ASSERT(list_empty(&bp->b_lru)); - - if (bp->b_flags & _XBF_PAGES) { - uint i; - - if (xfs_buf_is_vmapped(bp)) - vm_unmap_ram(bp->b_addr - bp->b_offset, - bp->b_page_count); - - for (i = 0; i < bp->b_page_count; i++) { - struct page *page = bp->b_pages[i]; - - __free_page(page); - } - } else if (bp->b_flags & _XBF_KMEM) - kmem_free(bp->b_addr); - _xfs_buf_free_pages(bp); - xfs_buf_deallocate(bp); -} - -/* - * Allocates all the pages for buffer in question and builds it's page list. - */ -STATIC int -xfs_buf_allocate_memory( - xfs_buf_t *bp, - uint flags) -{ - size_t size = bp->b_count_desired; - size_t nbytes, offset; - gfp_t gfp_mask = xb_to_gfp(flags); - unsigned short page_count, i; - xfs_off_t end; - int error; - - /* - * for buffers that are contained within a single page, just allocate - * the memory from the heap - there's no need for the complexity of - * page arrays to keep allocation down to order 0. - */ - if (bp->b_buffer_length < PAGE_SIZE) { - bp->b_addr = kmem_alloc(bp->b_buffer_length, xb_to_km(flags)); - if (!bp->b_addr) { - /* low memory - use alloc_page loop instead */ - goto use_alloc_page; - } - - if (((unsigned long)(bp->b_addr + bp->b_buffer_length - 1) & - PAGE_MASK) != - ((unsigned long)bp->b_addr & PAGE_MASK)) { - /* b_addr spans two pages - use alloc_page instead */ - kmem_free(bp->b_addr); - bp->b_addr = NULL; - goto use_alloc_page; - } - bp->b_offset = offset_in_page(bp->b_addr); - bp->b_pages = bp->b_page_array; - bp->b_pages[0] = virt_to_page(bp->b_addr); - bp->b_page_count = 1; - bp->b_flags |= XBF_MAPPED | _XBF_KMEM; - return 0; - } - -use_alloc_page: - end = bp->b_file_offset + bp->b_buffer_length; - page_count = xfs_buf_btoc(end) - xfs_buf_btoct(bp->b_file_offset); - error = _xfs_buf_get_pages(bp, page_count, flags); - if (unlikely(error)) - return error; - - offset = bp->b_offset; - bp->b_flags |= _XBF_PAGES; - - for (i = 0; i < bp->b_page_count; i++) { - struct page *page; - uint retries = 0; -retry: - page = alloc_page(gfp_mask); - if (unlikely(page == NULL)) { - if (flags & XBF_READ_AHEAD) { - bp->b_page_count = i; - error = ENOMEM; - goto out_free_pages; - } - - /* - * This could deadlock. - * - * But until all the XFS lowlevel code is revamped to - * handle buffer allocation failures we can't do much. - */ - if (!(++retries % 100)) - xfs_err(NULL, - "possible memory allocation deadlock in %s (mode:0x%x)", - __func__, gfp_mask); - - XFS_STATS_INC(xb_page_retries); - congestion_wait(BLK_RW_ASYNC, HZ/50); - goto retry; - } - - XFS_STATS_INC(xb_page_found); - - nbytes = min_t(size_t, size, PAGE_SIZE - offset); - size -= nbytes; - bp->b_pages[i] = page; - offset = 0; - } - return 0; - -out_free_pages: - for (i = 0; i < bp->b_page_count; i++) - __free_page(bp->b_pages[i]); - return error; -} - -/* - * Map buffer into kernel address-space if necessary. - */ -STATIC int -_xfs_buf_map_pages( - xfs_buf_t *bp, - uint flags) -{ - ASSERT(bp->b_flags & _XBF_PAGES); - if (bp->b_page_count == 1) { - /* A single page buffer is always mappable */ - bp->b_addr = page_address(bp->b_pages[0]) + bp->b_offset; - bp->b_flags |= XBF_MAPPED; - } else if (flags & XBF_MAPPED) { - int retried = 0; - - do { - bp->b_addr = vm_map_ram(bp->b_pages, bp->b_page_count, - -1, PAGE_KERNEL); - if (bp->b_addr) - break; - vm_unmap_aliases(); - } while (retried++ <= 1); - - if (!bp->b_addr) - return -ENOMEM; - bp->b_addr += bp->b_offset; - bp->b_flags |= XBF_MAPPED; - } - - return 0; -} - -/* - * Finding and Reading Buffers - */ - -/* - * Look up, and creates if absent, a lockable buffer for - * a given range of an inode. The buffer is returned - * locked. If other overlapping buffers exist, they are - * released before the new buffer is created and locked, - * which may imply that this call will block until those buffers - * are unlocked. No I/O is implied by this call. - */ -xfs_buf_t * -_xfs_buf_find( - xfs_buftarg_t *btp, /* block device target */ - xfs_off_t ioff, /* starting offset of range */ - size_t isize, /* length of range */ - xfs_buf_flags_t flags, - xfs_buf_t *new_bp) -{ - xfs_off_t range_base; - size_t range_length; - struct xfs_perag *pag; - struct rb_node **rbp; - struct rb_node *parent; - xfs_buf_t *bp; - - range_base = (ioff << BBSHIFT); - range_length = (isize << BBSHIFT); - - /* Check for IOs smaller than the sector size / not sector aligned */ - ASSERT(!(range_length < (1 << btp->bt_sshift))); - ASSERT(!(range_base & (xfs_off_t)btp->bt_smask)); - - /* get tree root */ - pag = xfs_perag_get(btp->bt_mount, - xfs_daddr_to_agno(btp->bt_mount, ioff)); - - /* walk tree */ - spin_lock(&pag->pag_buf_lock); - rbp = &pag->pag_buf_tree.rb_node; - parent = NULL; - bp = NULL; - while (*rbp) { - parent = *rbp; - bp = rb_entry(parent, struct xfs_buf, b_rbnode); - - if (range_base < bp->b_file_offset) - rbp = &(*rbp)->rb_left; - else if (range_base > bp->b_file_offset) - rbp = &(*rbp)->rb_right; - else { - /* - * found a block offset match. If the range doesn't - * match, the only way this is allowed is if the buffer - * in the cache is stale and the transaction that made - * it stale has not yet committed. i.e. we are - * reallocating a busy extent. Skip this buffer and - * continue searching to the right for an exact match. - */ - if (bp->b_buffer_length != range_length) { - ASSERT(bp->b_flags & XBF_STALE); - rbp = &(*rbp)->rb_right; - continue; - } - atomic_inc(&bp->b_hold); - goto found; - } - } - - /* No match found */ - if (new_bp) { - _xfs_buf_initialize(new_bp, btp, range_base, - range_length, flags); - rb_link_node(&new_bp->b_rbnode, parent, rbp); - rb_insert_color(&new_bp->b_rbnode, &pag->pag_buf_tree); - /* the buffer keeps the perag reference until it is freed */ - new_bp->b_pag = pag; - spin_unlock(&pag->pag_buf_lock); - } else { - XFS_STATS_INC(xb_miss_locked); - spin_unlock(&pag->pag_buf_lock); - xfs_perag_put(pag); - } - return new_bp; - -found: - spin_unlock(&pag->pag_buf_lock); - xfs_perag_put(pag); - - if (!xfs_buf_trylock(bp)) { - if (flags & XBF_TRYLOCK) { - xfs_buf_rele(bp); - XFS_STATS_INC(xb_busy_locked); - return NULL; - } - xfs_buf_lock(bp); - XFS_STATS_INC(xb_get_locked_waited); - } - - /* - * if the buffer is stale, clear all the external state associated with - * it. We need to keep flags such as how we allocated the buffer memory - * intact here. - */ - if (bp->b_flags & XBF_STALE) { - ASSERT((bp->b_flags & _XBF_DELWRI_Q) == 0); - bp->b_flags &= XBF_MAPPED | _XBF_KMEM | _XBF_PAGES; - } - - trace_xfs_buf_find(bp, flags, _RET_IP_); - XFS_STATS_INC(xb_get_locked); - return bp; -} - -/* - * Assembles a buffer covering the specified range. - * Storage in memory for all portions of the buffer will be allocated, - * although backing storage may not be. - */ -xfs_buf_t * -xfs_buf_get( - xfs_buftarg_t *target,/* target for buffer */ - xfs_off_t ioff, /* starting offset of range */ - size_t isize, /* length of range */ - xfs_buf_flags_t flags) -{ - xfs_buf_t *bp, *new_bp; - int error = 0; - - new_bp = xfs_buf_allocate(flags); - if (unlikely(!new_bp)) - return NULL; - - bp = _xfs_buf_find(target, ioff, isize, flags, new_bp); - if (bp == new_bp) { - error = xfs_buf_allocate_memory(bp, flags); - if (error) - goto no_buffer; - } else { - xfs_buf_deallocate(new_bp); - if (unlikely(bp == NULL)) - return NULL; - } - - if (!(bp->b_flags & XBF_MAPPED)) { - error = _xfs_buf_map_pages(bp, flags); - if (unlikely(error)) { - xfs_warn(target->bt_mount, - "%s: failed to map pages\n", __func__); - goto no_buffer; - } - } - - XFS_STATS_INC(xb_get); - - /* - * Always fill in the block number now, the mapped cases can do - * their own overlay of this later. - */ - bp->b_bn = ioff; - bp->b_count_desired = bp->b_buffer_length; - - trace_xfs_buf_get(bp, flags, _RET_IP_); - return bp; - - no_buffer: - if (flags & (XBF_LOCK | XBF_TRYLOCK)) - xfs_buf_unlock(bp); - xfs_buf_rele(bp); - return NULL; -} - -STATIC int -_xfs_buf_read( - xfs_buf_t *bp, - xfs_buf_flags_t flags) -{ - int status; - - ASSERT(!(flags & (XBF_DELWRI|XBF_WRITE))); - ASSERT(bp->b_bn != XFS_BUF_DADDR_NULL); - - bp->b_flags &= ~(XBF_WRITE | XBF_ASYNC | XBF_DELWRI | XBF_READ_AHEAD); - bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD); - - status = xfs_buf_iorequest(bp); - if (status || bp->b_error || (flags & XBF_ASYNC)) - return status; - return xfs_buf_iowait(bp); -} - -xfs_buf_t * -xfs_buf_read( - xfs_buftarg_t *target, - xfs_off_t ioff, - size_t isize, - xfs_buf_flags_t flags) -{ - xfs_buf_t *bp; - - flags |= XBF_READ; - - bp = xfs_buf_get(target, ioff, isize, flags); - if (bp) { - trace_xfs_buf_read(bp, flags, _RET_IP_); - - if (!XFS_BUF_ISDONE(bp)) { - XFS_STATS_INC(xb_get_read); - _xfs_buf_read(bp, flags); - } else if (flags & XBF_ASYNC) { - /* - * Read ahead call which is already satisfied, - * drop the buffer - */ - goto no_buffer; - } else { - /* We do not want read in the flags */ - bp->b_flags &= ~XBF_READ; - } - } - - return bp; - - no_buffer: - if (flags & (XBF_LOCK | XBF_TRYLOCK)) - xfs_buf_unlock(bp); - xfs_buf_rele(bp); - return NULL; -} - -/* - * If we are not low on memory then do the readahead in a deadlock - * safe manner. - */ -void -xfs_buf_readahead( - xfs_buftarg_t *target, - xfs_off_t ioff, - size_t isize) -{ - if (bdi_read_congested(target->bt_bdi)) - return; - - xfs_buf_read(target, ioff, isize, - XBF_TRYLOCK|XBF_ASYNC|XBF_READ_AHEAD|XBF_DONT_BLOCK); -} - -/* - * Read an uncached buffer from disk. Allocates and returns a locked - * buffer containing the disk contents or nothing. - */ -struct xfs_buf * -xfs_buf_read_uncached( - struct xfs_mount *mp, - struct xfs_buftarg *target, - xfs_daddr_t daddr, - size_t length, - int flags) -{ - xfs_buf_t *bp; - int error; - - bp = xfs_buf_get_uncached(target, length, flags); - if (!bp) - return NULL; - - /* set up the buffer for a read IO */ - XFS_BUF_SET_ADDR(bp, daddr); - XFS_BUF_READ(bp); - - xfsbdstrat(mp, bp); - error = xfs_buf_iowait(bp); - if (error || bp->b_error) { - xfs_buf_relse(bp); - return NULL; - } - return bp; -} - -xfs_buf_t * -xfs_buf_get_empty( - size_t len, - xfs_buftarg_t *target) -{ - xfs_buf_t *bp; - - bp = xfs_buf_allocate(0); - if (bp) - _xfs_buf_initialize(bp, target, 0, len, 0); - return bp; -} - -/* - * Return a buffer allocated as an empty buffer and associated to external - * memory via xfs_buf_associate_memory() back to it's empty state. - */ -void -xfs_buf_set_empty( - struct xfs_buf *bp, - size_t len) -{ - if (bp->b_pages) - _xfs_buf_free_pages(bp); - - bp->b_pages = NULL; - bp->b_page_count = 0; - bp->b_addr = NULL; - bp->b_file_offset = 0; - bp->b_buffer_length = bp->b_count_desired = len; - bp->b_bn = XFS_BUF_DADDR_NULL; - bp->b_flags &= ~XBF_MAPPED; -} - -static inline struct page * -mem_to_page( - void *addr) -{ - if ((!is_vmalloc_addr(addr))) { - return virt_to_page(addr); - } else { - return vmalloc_to_page(addr); - } -} - -int -xfs_buf_associate_memory( - xfs_buf_t *bp, - void *mem, - size_t len) -{ - int rval; - int i = 0; - unsigned long pageaddr; - unsigned long offset; - size_t buflen; - int page_count; - - pageaddr = (unsigned long)mem & PAGE_MASK; - offset = (unsigned long)mem - pageaddr; - buflen = PAGE_ALIGN(len + offset); - page_count = buflen >> PAGE_SHIFT; - - /* Free any previous set of page pointers */ - if (bp->b_pages) - _xfs_buf_free_pages(bp); - - bp->b_pages = NULL; - bp->b_addr = mem; - - rval = _xfs_buf_get_pages(bp, page_count, XBF_DONT_BLOCK); - if (rval) - return rval; - - bp->b_offset = offset; - - for (i = 0; i < bp->b_page_count; i++) { - bp->b_pages[i] = mem_to_page((void *)pageaddr); - pageaddr += PAGE_SIZE; - } - - bp->b_count_desired = len; - bp->b_buffer_length = buflen; - bp->b_flags |= XBF_MAPPED; - - return 0; -} - -xfs_buf_t * -xfs_buf_get_uncached( - struct xfs_buftarg *target, - size_t len, - int flags) -{ - unsigned long page_count = PAGE_ALIGN(len) >> PAGE_SHIFT; - int error, i; - xfs_buf_t *bp; - - bp = xfs_buf_allocate(0); - if (unlikely(bp == NULL)) - goto fail; - _xfs_buf_initialize(bp, target, 0, len, 0); - - error = _xfs_buf_get_pages(bp, page_count, 0); - if (error) - goto fail_free_buf; - - for (i = 0; i < page_count; i++) { - bp->b_pages[i] = alloc_page(xb_to_gfp(flags)); - if (!bp->b_pages[i]) - goto fail_free_mem; - } - bp->b_flags |= _XBF_PAGES; - - error = _xfs_buf_map_pages(bp, XBF_MAPPED); - if (unlikely(error)) { - xfs_warn(target->bt_mount, - "%s: failed to map pages\n", __func__); - goto fail_free_mem; - } - - trace_xfs_buf_get_uncached(bp, _RET_IP_); - return bp; - - fail_free_mem: - while (--i >= 0) - __free_page(bp->b_pages[i]); - _xfs_buf_free_pages(bp); - fail_free_buf: - xfs_buf_deallocate(bp); - fail: - return NULL; -} - -/* - * Increment reference count on buffer, to hold the buffer concurrently - * with another thread which may release (free) the buffer asynchronously. - * Must hold the buffer already to call this function. - */ -void -xfs_buf_hold( - xfs_buf_t *bp) -{ - trace_xfs_buf_hold(bp, _RET_IP_); - atomic_inc(&bp->b_hold); -} - -/* - * Releases a hold on the specified buffer. If the - * the hold count is 1, calls xfs_buf_free. - */ -void -xfs_buf_rele( - xfs_buf_t *bp) -{ - struct xfs_perag *pag = bp->b_pag; - - trace_xfs_buf_rele(bp, _RET_IP_); - - if (!pag) { - ASSERT(list_empty(&bp->b_lru)); - ASSERT(RB_EMPTY_NODE(&bp->b_rbnode)); - if (atomic_dec_and_test(&bp->b_hold)) - xfs_buf_free(bp); - return; - } - - ASSERT(!RB_EMPTY_NODE(&bp->b_rbnode)); - - ASSERT(atomic_read(&bp->b_hold) > 0); - if (atomic_dec_and_lock(&bp->b_hold, &pag->pag_buf_lock)) { - if (!(bp->b_flags & XBF_STALE) && - atomic_read(&bp->b_lru_ref)) { - xfs_buf_lru_add(bp); - spin_unlock(&pag->pag_buf_lock); - } else { - xfs_buf_lru_del(bp); - ASSERT(!(bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q))); - rb_erase(&bp->b_rbnode, &pag->pag_buf_tree); - spin_unlock(&pag->pag_buf_lock); - xfs_perag_put(pag); - xfs_buf_free(bp); - } - } -} - - -/* - * Lock a buffer object, if it is not already locked. - * - * If we come across a stale, pinned, locked buffer, we know that we are - * being asked to lock a buffer that has been reallocated. Because it is - * pinned, we know that the log has not been pushed to disk and hence it - * will still be locked. Rather than continuing to have trylock attempts - * fail until someone else pushes the log, push it ourselves before - * returning. This means that the xfsaild will not get stuck trying - * to push on stale inode buffers. - */ -int -xfs_buf_trylock( - struct xfs_buf *bp) -{ - int locked; - - locked = down_trylock(&bp->b_sema) == 0; - if (locked) - XB_SET_OWNER(bp); - else if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE)) - xfs_log_force(bp->b_target->bt_mount, 0); - - trace_xfs_buf_trylock(bp, _RET_IP_); - return locked; -} - -/* - * Lock a buffer object. - * - * If we come across a stale, pinned, locked buffer, we know that we - * are being asked to lock a buffer that has been reallocated. Because - * it is pinned, we know that the log has not been pushed to disk and - * hence it will still be locked. Rather than sleeping until someone - * else pushes the log, push it ourselves before trying to get the lock. - */ -void -xfs_buf_lock( - struct xfs_buf *bp) -{ - trace_xfs_buf_lock(bp, _RET_IP_); - - if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE)) - xfs_log_force(bp->b_target->bt_mount, 0); - down(&bp->b_sema); - XB_SET_OWNER(bp); - - trace_xfs_buf_lock_done(bp, _RET_IP_); -} - -/* - * Releases the lock on the buffer object. - * If the buffer is marked delwri but is not queued, do so before we - * unlock the buffer as we need to set flags correctly. We also need to - * take a reference for the delwri queue because the unlocker is going to - * drop their's and they don't know we just queued it. - */ -void -xfs_buf_unlock( - struct xfs_buf *bp) -{ - if ((bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q)) == XBF_DELWRI) { - atomic_inc(&bp->b_hold); - bp->b_flags |= XBF_ASYNC; - xfs_buf_delwri_queue(bp, 0); - } - - XB_CLEAR_OWNER(bp); - up(&bp->b_sema); - - trace_xfs_buf_unlock(bp, _RET_IP_); -} - -STATIC void -xfs_buf_wait_unpin( - xfs_buf_t *bp) -{ - DECLARE_WAITQUEUE (wait, current); - - if (atomic_read(&bp->b_pin_count) == 0) - return; - - add_wait_queue(&bp->b_waiters, &wait); - for (;;) { - set_current_state(TASK_UNINTERRUPTIBLE); - if (atomic_read(&bp->b_pin_count) == 0) - break; - io_schedule(); - } - remove_wait_queue(&bp->b_waiters, &wait); - set_current_state(TASK_RUNNING); -} - -/* - * Buffer Utility Routines - */ - -STATIC void -xfs_buf_iodone_work( - struct work_struct *work) -{ - xfs_buf_t *bp = - container_of(work, xfs_buf_t, b_iodone_work); - - if (bp->b_iodone) - (*(bp->b_iodone))(bp); - else if (bp->b_flags & XBF_ASYNC) - xfs_buf_relse(bp); -} - -void -xfs_buf_ioend( - xfs_buf_t *bp, - int schedule) -{ - trace_xfs_buf_iodone(bp, _RET_IP_); - - bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_READ_AHEAD); - if (bp->b_error == 0) - bp->b_flags |= XBF_DONE; - - if ((bp->b_iodone) || (bp->b_flags & XBF_ASYNC)) { - if (schedule) { - INIT_WORK(&bp->b_iodone_work, xfs_buf_iodone_work); - queue_work(xfslogd_workqueue, &bp->b_iodone_work); - } else { - xfs_buf_iodone_work(&bp->b_iodone_work); - } - } else { - complete(&bp->b_iowait); - } -} - -void -xfs_buf_ioerror( - xfs_buf_t *bp, - int error) -{ - ASSERT(error >= 0 && error <= 0xffff); - bp->b_error = (unsigned short)error; - trace_xfs_buf_ioerror(bp, error, _RET_IP_); -} - -int -xfs_bwrite( - struct xfs_mount *mp, - struct xfs_buf *bp) -{ - int error; - - bp->b_flags |= XBF_WRITE; - bp->b_flags &= ~(XBF_ASYNC | XBF_READ); - - xfs_buf_delwri_dequeue(bp); - xfs_bdstrat_cb(bp); - - error = xfs_buf_iowait(bp); - if (error) - xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); - xfs_buf_relse(bp); - return error; -} - -void -xfs_bdwrite( - void *mp, - struct xfs_buf *bp) -{ - trace_xfs_buf_bdwrite(bp, _RET_IP_); - - bp->b_flags &= ~XBF_READ; - bp->b_flags |= (XBF_DELWRI | XBF_ASYNC); - - xfs_buf_delwri_queue(bp, 1); -} - -/* - * Called when we want to stop a buffer from getting written or read. - * We attach the EIO error, muck with its flags, and call xfs_buf_ioend - * so that the proper iodone callbacks get called. - */ -STATIC int -xfs_bioerror( - xfs_buf_t *bp) -{ -#ifdef XFSERRORDEBUG - ASSERT(XFS_BUF_ISREAD(bp) || bp->b_iodone); -#endif - - /* - * No need to wait until the buffer is unpinned, we aren't flushing it. - */ - xfs_buf_ioerror(bp, EIO); - - /* - * We're calling xfs_buf_ioend, so delete XBF_DONE flag. - */ - XFS_BUF_UNREAD(bp); - XFS_BUF_UNDELAYWRITE(bp); - XFS_BUF_UNDONE(bp); - XFS_BUF_STALE(bp); - - xfs_buf_ioend(bp, 0); - - return EIO; -} - -/* - * Same as xfs_bioerror, except that we are releasing the buffer - * here ourselves, and avoiding the xfs_buf_ioend call. - * This is meant for userdata errors; metadata bufs come with - * iodone functions attached, so that we can track down errors. - */ -STATIC int -xfs_bioerror_relse( - struct xfs_buf *bp) -{ - int64_t fl = bp->b_flags; - /* - * No need to wait until the buffer is unpinned. - * We aren't flushing it. - * - * chunkhold expects B_DONE to be set, whether - * we actually finish the I/O or not. We don't want to - * change that interface. - */ - XFS_BUF_UNREAD(bp); - XFS_BUF_UNDELAYWRITE(bp); - XFS_BUF_DONE(bp); - XFS_BUF_STALE(bp); - bp->b_iodone = NULL; - if (!(fl & XBF_ASYNC)) { - /* - * Mark b_error and B_ERROR _both_. - * Lot's of chunkcache code assumes that. - * There's no reason to mark error for - * ASYNC buffers. - */ - xfs_buf_ioerror(bp, EIO); - XFS_BUF_FINISH_IOWAIT(bp); - } else { - xfs_buf_relse(bp); - } - - return EIO; -} - - -/* - * All xfs metadata buffers except log state machine buffers - * get this attached as their b_bdstrat callback function. - * This is so that we can catch a buffer - * after prematurely unpinning it to forcibly shutdown the filesystem. - */ -int -xfs_bdstrat_cb( - struct xfs_buf *bp) -{ - if (XFS_FORCED_SHUTDOWN(bp->b_target->bt_mount)) { - trace_xfs_bdstrat_shut(bp, _RET_IP_); - /* - * Metadata write that didn't get logged but - * written delayed anyway. These aren't associated - * with a transaction, and can be ignored. - */ - if (!bp->b_iodone && !XFS_BUF_ISREAD(bp)) - return xfs_bioerror_relse(bp); - else - return xfs_bioerror(bp); - } - - xfs_buf_iorequest(bp); - return 0; -} - -/* - * Wrapper around bdstrat so that we can stop data from going to disk in case - * we are shutting down the filesystem. Typically user data goes thru this - * path; one of the exceptions is the superblock. - */ -void -xfsbdstrat( - struct xfs_mount *mp, - struct xfs_buf *bp) -{ - if (XFS_FORCED_SHUTDOWN(mp)) { - trace_xfs_bdstrat_shut(bp, _RET_IP_); - xfs_bioerror_relse(bp); - return; - } - - xfs_buf_iorequest(bp); -} - -STATIC void -_xfs_buf_ioend( - xfs_buf_t *bp, - int schedule) -{ - if (atomic_dec_and_test(&bp->b_io_remaining) == 1) - xfs_buf_ioend(bp, schedule); -} - -STATIC void -xfs_buf_bio_end_io( - struct bio *bio, - int error) -{ - xfs_buf_t *bp = (xfs_buf_t *)bio->bi_private; - - xfs_buf_ioerror(bp, -error); - - if (!error && xfs_buf_is_vmapped(bp) && (bp->b_flags & XBF_READ)) - invalidate_kernel_vmap_range(bp->b_addr, xfs_buf_vmap_len(bp)); - - _xfs_buf_ioend(bp, 1); - bio_put(bio); -} - -STATIC void -_xfs_buf_ioapply( - xfs_buf_t *bp) -{ - int rw, map_i, total_nr_pages, nr_pages; - struct bio *bio; - int offset = bp->b_offset; - int size = bp->b_count_desired; - sector_t sector = bp->b_bn; - - total_nr_pages = bp->b_page_count; - map_i = 0; - - if (bp->b_flags & XBF_WRITE) { - if (bp->b_flags & XBF_SYNCIO) - rw = WRITE_SYNC; - else - rw = WRITE; - if (bp->b_flags & XBF_FUA) - rw |= REQ_FUA; - if (bp->b_flags & XBF_FLUSH) - rw |= REQ_FLUSH; - } else if (bp->b_flags & XBF_READ_AHEAD) { - rw = READA; - } else { - rw = READ; - } - - /* we only use the buffer cache for meta-data */ - rw |= REQ_META; - -next_chunk: - atomic_inc(&bp->b_io_remaining); - nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - BBSHIFT); - if (nr_pages > total_nr_pages) - nr_pages = total_nr_pages; - - bio = bio_alloc(GFP_NOIO, nr_pages); - bio->bi_bdev = bp->b_target->bt_bdev; - bio->bi_sector = sector; - bio->bi_end_io = xfs_buf_bio_end_io; - bio->bi_private = bp; - - - for (; size && nr_pages; nr_pages--, map_i++) { - int rbytes, nbytes = PAGE_SIZE - offset; - - if (nbytes > size) - nbytes = size; - - rbytes = bio_add_page(bio, bp->b_pages[map_i], nbytes, offset); - if (rbytes < nbytes) - break; - - offset = 0; - sector += nbytes >> BBSHIFT; - size -= nbytes; - total_nr_pages--; - } - - if (likely(bio->bi_size)) { - if (xfs_buf_is_vmapped(bp)) { - flush_kernel_vmap_range(bp->b_addr, - xfs_buf_vmap_len(bp)); - } - submit_bio(rw, bio); - if (size) - goto next_chunk; - } else { - xfs_buf_ioerror(bp, EIO); - bio_put(bio); - } -} - -int -xfs_buf_iorequest( - xfs_buf_t *bp) -{ - trace_xfs_buf_iorequest(bp, _RET_IP_); - - if (bp->b_flags & XBF_DELWRI) { - xfs_buf_delwri_queue(bp, 1); - return 0; - } - - if (bp->b_flags & XBF_WRITE) { - xfs_buf_wait_unpin(bp); - } - - xfs_buf_hold(bp); - - /* Set the count to 1 initially, this will stop an I/O - * completion callout which happens before we have started - * all the I/O from calling xfs_buf_ioend too early. - */ - atomic_set(&bp->b_io_remaining, 1); - _xfs_buf_ioapply(bp); - _xfs_buf_ioend(bp, 0); - - xfs_buf_rele(bp); - return 0; -} - -/* - * Waits for I/O to complete on the buffer supplied. - * It returns immediately if no I/O is pending. - * It returns the I/O error code, if any, or 0 if there was no error. - */ -int -xfs_buf_iowait( - xfs_buf_t *bp) -{ - trace_xfs_buf_iowait(bp, _RET_IP_); - - wait_for_completion(&bp->b_iowait); - - trace_xfs_buf_iowait_done(bp, _RET_IP_); - return bp->b_error; -} - -xfs_caddr_t -xfs_buf_offset( - xfs_buf_t *bp, - size_t offset) -{ - struct page *page; - - if (bp->b_flags & XBF_MAPPED) - return bp->b_addr + offset; - - offset += bp->b_offset; - page = bp->b_pages[offset >> PAGE_SHIFT]; - return (xfs_caddr_t)page_address(page) + (offset & (PAGE_SIZE-1)); -} - -/* - * Move data into or out of a buffer. - */ -void -xfs_buf_iomove( - xfs_buf_t *bp, /* buffer to process */ - size_t boff, /* starting buffer offset */ - size_t bsize, /* length to copy */ - void *data, /* data address */ - xfs_buf_rw_t mode) /* read/write/zero flag */ -{ - size_t bend, cpoff, csize; - struct page *page; - - bend = boff + bsize; - while (boff < bend) { - page = bp->b_pages[xfs_buf_btoct(boff + bp->b_offset)]; - cpoff = xfs_buf_poff(boff + bp->b_offset); - csize = min_t(size_t, - PAGE_SIZE-cpoff, bp->b_count_desired-boff); - - ASSERT(((csize + cpoff) <= PAGE_SIZE)); - - switch (mode) { - case XBRW_ZERO: - memset(page_address(page) + cpoff, 0, csize); - break; - case XBRW_READ: - memcpy(data, page_address(page) + cpoff, csize); - break; - case XBRW_WRITE: - memcpy(page_address(page) + cpoff, data, csize); - } - - boff += csize; - data += csize; - } -} - -/* - * Handling of buffer targets (buftargs). - */ - -/* - * Wait for any bufs with callbacks that have been submitted but have not yet - * returned. These buffers will have an elevated hold count, so wait on those - * while freeing all the buffers only held by the LRU. - */ -void -xfs_wait_buftarg( - struct xfs_buftarg *btp) -{ - struct xfs_buf *bp; - -restart: - spin_lock(&btp->bt_lru_lock); - while (!list_empty(&btp->bt_lru)) { - bp = list_first_entry(&btp->bt_lru, struct xfs_buf, b_lru); - if (atomic_read(&bp->b_hold) > 1) { - spin_unlock(&btp->bt_lru_lock); - delay(100); - goto restart; - } - /* - * clear the LRU reference count so the bufer doesn't get - * ignored in xfs_buf_rele(). - */ - atomic_set(&bp->b_lru_ref, 0); - spin_unlock(&btp->bt_lru_lock); - xfs_buf_rele(bp); - spin_lock(&btp->bt_lru_lock); - } - spin_unlock(&btp->bt_lru_lock); -} - -int -xfs_buftarg_shrink( - struct shrinker *shrink, - struct shrink_control *sc) -{ - struct xfs_buftarg *btp = container_of(shrink, - struct xfs_buftarg, bt_shrinker); - struct xfs_buf *bp; - int nr_to_scan = sc->nr_to_scan; - LIST_HEAD(dispose); - - if (!nr_to_scan) - return btp->bt_lru_nr; - - spin_lock(&btp->bt_lru_lock); - while (!list_empty(&btp->bt_lru)) { - if (nr_to_scan-- <= 0) - break; - - bp = list_first_entry(&btp->bt_lru, struct xfs_buf, b_lru); - - /* - * Decrement the b_lru_ref count unless the value is already - * zero. If the value is already zero, we need to reclaim the - * buffer, otherwise it gets another trip through the LRU. - */ - if (!atomic_add_unless(&bp->b_lru_ref, -1, 0)) { - list_move_tail(&bp->b_lru, &btp->bt_lru); - continue; - } - - /* - * remove the buffer from the LRU now to avoid needing another - * lock round trip inside xfs_buf_rele(). - */ - list_move(&bp->b_lru, &dispose); - btp->bt_lru_nr--; - } - spin_unlock(&btp->bt_lru_lock); - - while (!list_empty(&dispose)) { - bp = list_first_entry(&dispose, struct xfs_buf, b_lru); - list_del_init(&bp->b_lru); - xfs_buf_rele(bp); - } - - return btp->bt_lru_nr; -} - -void -xfs_free_buftarg( - struct xfs_mount *mp, - struct xfs_buftarg *btp) -{ - unregister_shrinker(&btp->bt_shrinker); - - xfs_flush_buftarg(btp, 1); - if (mp->m_flags & XFS_MOUNT_BARRIER) - xfs_blkdev_issue_flush(btp); - - kthread_stop(btp->bt_task); - kmem_free(btp); -} - -STATIC int -xfs_setsize_buftarg_flags( - xfs_buftarg_t *btp, - unsigned int blocksize, - unsigned int sectorsize, - int verbose) -{ - btp->bt_bsize = blocksize; - btp->bt_sshift = ffs(sectorsize) - 1; - btp->bt_smask = sectorsize - 1; - - if (set_blocksize(btp->bt_bdev, sectorsize)) { - xfs_warn(btp->bt_mount, - "Cannot set_blocksize to %u on device %s\n", - sectorsize, xfs_buf_target_name(btp)); - return EINVAL; - } - - return 0; -} - -/* - * When allocating the initial buffer target we have not yet - * read in the superblock, so don't know what sized sectors - * are being used is at this early stage. Play safe. - */ -STATIC int -xfs_setsize_buftarg_early( - xfs_buftarg_t *btp, - struct block_device *bdev) -{ - return xfs_setsize_buftarg_flags(btp, - PAGE_SIZE, bdev_logical_block_size(bdev), 0); -} - -int -xfs_setsize_buftarg( - xfs_buftarg_t *btp, - unsigned int blocksize, - unsigned int sectorsize) -{ - return xfs_setsize_buftarg_flags(btp, blocksize, sectorsize, 1); -} - -STATIC int -xfs_alloc_delwrite_queue( - xfs_buftarg_t *btp, - const char *fsname) -{ - INIT_LIST_HEAD(&btp->bt_delwrite_queue); - spin_lock_init(&btp->bt_delwrite_lock); - btp->bt_flags = 0; - btp->bt_task = kthread_run(xfsbufd, btp, "xfsbufd/%s", fsname); - if (IS_ERR(btp->bt_task)) - return PTR_ERR(btp->bt_task); - return 0; -} - -xfs_buftarg_t * -xfs_alloc_buftarg( - struct xfs_mount *mp, - struct block_device *bdev, - int external, - const char *fsname) -{ - xfs_buftarg_t *btp; - - btp = kmem_zalloc(sizeof(*btp), KM_SLEEP); - - btp->bt_mount = mp; - btp->bt_dev = bdev->bd_dev; - btp->bt_bdev = bdev; - btp->bt_bdi = blk_get_backing_dev_info(bdev); - if (!btp->bt_bdi) - goto error; - - INIT_LIST_HEAD(&btp->bt_lru); - spin_lock_init(&btp->bt_lru_lock); - if (xfs_setsize_buftarg_early(btp, bdev)) - goto error; - if (xfs_alloc_delwrite_queue(btp, fsname)) - goto error; - btp->bt_shrinker.shrink = xfs_buftarg_shrink; - btp->bt_shrinker.seeks = DEFAULT_SEEKS; - register_shrinker(&btp->bt_shrinker); - return btp; - -error: - kmem_free(btp); - return NULL; -} - - -/* - * Delayed write buffer handling - */ -STATIC void -xfs_buf_delwri_queue( - xfs_buf_t *bp, - int unlock) -{ - struct list_head *dwq = &bp->b_target->bt_delwrite_queue; - spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; - - trace_xfs_buf_delwri_queue(bp, _RET_IP_); - - ASSERT((bp->b_flags&(XBF_DELWRI|XBF_ASYNC)) == (XBF_DELWRI|XBF_ASYNC)); - - spin_lock(dwlk); - /* If already in the queue, dequeue and place at tail */ - if (!list_empty(&bp->b_list)) { - ASSERT(bp->b_flags & _XBF_DELWRI_Q); - if (unlock) - atomic_dec(&bp->b_hold); - list_del(&bp->b_list); - } - - if (list_empty(dwq)) { - /* start xfsbufd as it is about to have something to do */ - wake_up_process(bp->b_target->bt_task); - } - - bp->b_flags |= _XBF_DELWRI_Q; - list_add_tail(&bp->b_list, dwq); - bp->b_queuetime = jiffies; - spin_unlock(dwlk); - - if (unlock) - xfs_buf_unlock(bp); -} - -void -xfs_buf_delwri_dequeue( - xfs_buf_t *bp) -{ - spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; - int dequeued = 0; - - spin_lock(dwlk); - if ((bp->b_flags & XBF_DELWRI) && !list_empty(&bp->b_list)) { - ASSERT(bp->b_flags & _XBF_DELWRI_Q); - list_del_init(&bp->b_list); - dequeued = 1; - } - bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); - spin_unlock(dwlk); - - if (dequeued) - xfs_buf_rele(bp); - - trace_xfs_buf_delwri_dequeue(bp, _RET_IP_); -} - -/* - * If a delwri buffer needs to be pushed before it has aged out, then promote - * it to the head of the delwri queue so that it will be flushed on the next - * xfsbufd run. We do this by resetting the queuetime of the buffer to be older - * than the age currently needed to flush the buffer. Hence the next time the - * xfsbufd sees it is guaranteed to be considered old enough to flush. - */ -void -xfs_buf_delwri_promote( - struct xfs_buf *bp) -{ - struct xfs_buftarg *btp = bp->b_target; - long age = xfs_buf_age_centisecs * msecs_to_jiffies(10) + 1; - - ASSERT(bp->b_flags & XBF_DELWRI); - ASSERT(bp->b_flags & _XBF_DELWRI_Q); - - /* - * Check the buffer age before locking the delayed write queue as we - * don't need to promote buffers that are already past the flush age. - */ - if (bp->b_queuetime < jiffies - age) - return; - bp->b_queuetime = jiffies - age; - spin_lock(&btp->bt_delwrite_lock); - list_move(&bp->b_list, &btp->bt_delwrite_queue); - spin_unlock(&btp->bt_delwrite_lock); -} - -STATIC void -xfs_buf_runall_queues( - struct workqueue_struct *queue) -{ - flush_workqueue(queue); -} - -/* - * Move as many buffers as specified to the supplied list - * idicating if we skipped any buffers to prevent deadlocks. - */ -STATIC int -xfs_buf_delwri_split( - xfs_buftarg_t *target, - struct list_head *list, - unsigned long age) -{ - xfs_buf_t *bp, *n; - struct list_head *dwq = &target->bt_delwrite_queue; - spinlock_t *dwlk = &target->bt_delwrite_lock; - int skipped = 0; - int force; - - force = test_and_clear_bit(XBT_FORCE_FLUSH, &target->bt_flags); - INIT_LIST_HEAD(list); - spin_lock(dwlk); - list_for_each_entry_safe(bp, n, dwq, b_list) { - ASSERT(bp->b_flags & XBF_DELWRI); - - if (!xfs_buf_ispinned(bp) && xfs_buf_trylock(bp)) { - if (!force && - time_before(jiffies, bp->b_queuetime + age)) { - xfs_buf_unlock(bp); - break; - } - - bp->b_flags &= ~(XBF_DELWRI | _XBF_DELWRI_Q); - bp->b_flags |= XBF_WRITE; - list_move_tail(&bp->b_list, list); - trace_xfs_buf_delwri_split(bp, _RET_IP_); - } else - skipped++; - } - spin_unlock(dwlk); - - return skipped; - -} - -/* - * Compare function is more complex than it needs to be because - * the return value is only 32 bits and we are doing comparisons - * on 64 bit values - */ -static int -xfs_buf_cmp( - void *priv, - struct list_head *a, - struct list_head *b) -{ - struct xfs_buf *ap = container_of(a, struct xfs_buf, b_list); - struct xfs_buf *bp = container_of(b, struct xfs_buf, b_list); - xfs_daddr_t diff; - - diff = ap->b_bn - bp->b_bn; - if (diff < 0) - return -1; - if (diff > 0) - return 1; - return 0; -} - -STATIC int -xfsbufd( - void *data) -{ - xfs_buftarg_t *target = (xfs_buftarg_t *)data; - - current->flags |= PF_MEMALLOC; - - set_freezable(); - - do { - long age = xfs_buf_age_centisecs * msecs_to_jiffies(10); - long tout = xfs_buf_timer_centisecs * msecs_to_jiffies(10); - struct list_head tmp; - struct blk_plug plug; - - if (unlikely(freezing(current))) { - set_bit(XBT_FORCE_SLEEP, &target->bt_flags); - refrigerator(); - } else { - clear_bit(XBT_FORCE_SLEEP, &target->bt_flags); - } - - /* sleep for a long time if there is nothing to do. */ - if (list_empty(&target->bt_delwrite_queue)) - tout = MAX_SCHEDULE_TIMEOUT; - schedule_timeout_interruptible(tout); - - xfs_buf_delwri_split(target, &tmp, age); - list_sort(NULL, &tmp, xfs_buf_cmp); - - blk_start_plug(&plug); - while (!list_empty(&tmp)) { - struct xfs_buf *bp; - bp = list_first_entry(&tmp, struct xfs_buf, b_list); - list_del_init(&bp->b_list); - xfs_bdstrat_cb(bp); - } - blk_finish_plug(&plug); - } while (!kthread_should_stop()); - - return 0; -} - -/* - * Go through all incore buffers, and release buffers if they belong to - * the given device. This is used in filesystem error handling to - * preserve the consistency of its metadata. - */ -int -xfs_flush_buftarg( - xfs_buftarg_t *target, - int wait) -{ - xfs_buf_t *bp; - int pincount = 0; - LIST_HEAD(tmp_list); - LIST_HEAD(wait_list); - struct blk_plug plug; - - xfs_buf_runall_queues(xfsconvertd_workqueue); - xfs_buf_runall_queues(xfsdatad_workqueue); - xfs_buf_runall_queues(xfslogd_workqueue); - - set_bit(XBT_FORCE_FLUSH, &target->bt_flags); - pincount = xfs_buf_delwri_split(target, &tmp_list, 0); - - /* - * Dropped the delayed write list lock, now walk the temporary list. - * All I/O is issued async and then if we need to wait for completion - * we do that after issuing all the IO. - */ - list_sort(NULL, &tmp_list, xfs_buf_cmp); - - blk_start_plug(&plug); - while (!list_empty(&tmp_list)) { - bp = list_first_entry(&tmp_list, struct xfs_buf, b_list); - ASSERT(target == bp->b_target); - list_del_init(&bp->b_list); - if (wait) { - bp->b_flags &= ~XBF_ASYNC; - list_add(&bp->b_list, &wait_list); - } - xfs_bdstrat_cb(bp); - } - blk_finish_plug(&plug); - - if (wait) { - /* Wait for IO to complete. */ - while (!list_empty(&wait_list)) { - bp = list_first_entry(&wait_list, struct xfs_buf, b_list); - - list_del_init(&bp->b_list); - xfs_buf_iowait(bp); - xfs_buf_relse(bp); - } - } - - return pincount; -} - -int __init -xfs_buf_init(void) -{ - xfs_buf_zone = kmem_zone_init_flags(sizeof(xfs_buf_t), "xfs_buf", - KM_ZONE_HWALIGN, NULL); - if (!xfs_buf_zone) - goto out; - - xfslogd_workqueue = alloc_workqueue("xfslogd", - WQ_MEM_RECLAIM | WQ_HIGHPRI, 1); - if (!xfslogd_workqueue) - goto out_free_buf_zone; - - xfsdatad_workqueue = alloc_workqueue("xfsdatad", WQ_MEM_RECLAIM, 1); - if (!xfsdatad_workqueue) - goto out_destroy_xfslogd_workqueue; - - xfsconvertd_workqueue = alloc_workqueue("xfsconvertd", - WQ_MEM_RECLAIM, 1); - if (!xfsconvertd_workqueue) - goto out_destroy_xfsdatad_workqueue; - - return 0; - - out_destroy_xfsdatad_workqueue: - destroy_workqueue(xfsdatad_workqueue); - out_destroy_xfslogd_workqueue: - destroy_workqueue(xfslogd_workqueue); - out_free_buf_zone: - kmem_zone_destroy(xfs_buf_zone); - out: - return -ENOMEM; -} - -void -xfs_buf_terminate(void) -{ - destroy_workqueue(xfsconvertd_workqueue); - destroy_workqueue(xfsdatad_workqueue); - destroy_workqueue(xfslogd_workqueue); - kmem_zone_destroy(xfs_buf_zone); -} - -#ifdef CONFIG_KDB_MODULES -struct list_head * -xfs_get_buftarg_list(void) -{ - return &xfs_buftarg_list; -} -#endif diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h deleted file mode 100644 index 620972b8094d..000000000000 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ /dev/null @@ -1,326 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_BUF_H__ -#define __XFS_BUF_H__ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* - * Base types - */ - -#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL)) - -#define xfs_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE) -#define xfs_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) -#define xfs_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT) -#define xfs_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK) - -typedef enum { - XBRW_READ = 1, /* transfer into target memory */ - XBRW_WRITE = 2, /* transfer from target memory */ - XBRW_ZERO = 3, /* Zero target memory */ -} xfs_buf_rw_t; - -#define XBF_READ (1 << 0) /* buffer intended for reading from device */ -#define XBF_WRITE (1 << 1) /* buffer intended for writing to device */ -#define XBF_READ_AHEAD (1 << 2) /* asynchronous read-ahead */ -#define XBF_MAPPED (1 << 3) /* buffer mapped (b_addr valid) */ -#define XBF_ASYNC (1 << 4) /* initiator will not wait for completion */ -#define XBF_DONE (1 << 5) /* all pages in the buffer uptodate */ -#define XBF_DELWRI (1 << 6) /* buffer has dirty pages */ -#define XBF_STALE (1 << 7) /* buffer has been staled, do not find it */ - -/* I/O hints for the BIO layer */ -#define XBF_SYNCIO (1 << 10)/* treat this buffer as synchronous I/O */ -#define XBF_FUA (1 << 11)/* force cache write through mode */ -#define XBF_FLUSH (1 << 12)/* flush the disk cache before a write */ - -/* flags used only as arguments to access routines */ -#define XBF_LOCK (1 << 15)/* lock requested */ -#define XBF_TRYLOCK (1 << 16)/* lock requested, but do not wait */ -#define XBF_DONT_BLOCK (1 << 17)/* do not block in current thread */ - -/* flags used only internally */ -#define _XBF_PAGES (1 << 20)/* backed by refcounted pages */ -#define _XBF_KMEM (1 << 21)/* backed by heap memory */ -#define _XBF_DELWRI_Q (1 << 22)/* buffer on delwri queue */ - -typedef unsigned int xfs_buf_flags_t; - -#define XFS_BUF_FLAGS \ - { XBF_READ, "READ" }, \ - { XBF_WRITE, "WRITE" }, \ - { XBF_READ_AHEAD, "READ_AHEAD" }, \ - { XBF_MAPPED, "MAPPED" }, \ - { XBF_ASYNC, "ASYNC" }, \ - { XBF_DONE, "DONE" }, \ - { XBF_DELWRI, "DELWRI" }, \ - { XBF_STALE, "STALE" }, \ - { XBF_SYNCIO, "SYNCIO" }, \ - { XBF_FUA, "FUA" }, \ - { XBF_FLUSH, "FLUSH" }, \ - { XBF_LOCK, "LOCK" }, /* should never be set */\ - { XBF_TRYLOCK, "TRYLOCK" }, /* ditto */\ - { XBF_DONT_BLOCK, "DONT_BLOCK" }, /* ditto */\ - { _XBF_PAGES, "PAGES" }, \ - { _XBF_KMEM, "KMEM" }, \ - { _XBF_DELWRI_Q, "DELWRI_Q" } - -typedef enum { - XBT_FORCE_SLEEP = 0, - XBT_FORCE_FLUSH = 1, -} xfs_buftarg_flags_t; - -typedef struct xfs_buftarg { - dev_t bt_dev; - struct block_device *bt_bdev; - struct backing_dev_info *bt_bdi; - struct xfs_mount *bt_mount; - unsigned int bt_bsize; - unsigned int bt_sshift; - size_t bt_smask; - - /* per device delwri queue */ - struct task_struct *bt_task; - struct list_head bt_delwrite_queue; - spinlock_t bt_delwrite_lock; - unsigned long bt_flags; - - /* LRU control structures */ - struct shrinker bt_shrinker; - struct list_head bt_lru; - spinlock_t bt_lru_lock; - unsigned int bt_lru_nr; -} xfs_buftarg_t; - -struct xfs_buf; -typedef void (*xfs_buf_iodone_t)(struct xfs_buf *); - -#define XB_PAGES 2 - -typedef struct xfs_buf { - /* - * first cacheline holds all the fields needed for an uncontended cache - * hit to be fully processed. The semaphore straddles the cacheline - * boundary, but the counter and lock sits on the first cacheline, - * which is the only bit that is touched if we hit the semaphore - * fast-path on locking. - */ - struct rb_node b_rbnode; /* rbtree node */ - xfs_off_t b_file_offset; /* offset in file */ - size_t b_buffer_length;/* size of buffer in bytes */ - atomic_t b_hold; /* reference count */ - atomic_t b_lru_ref; /* lru reclaim ref count */ - xfs_buf_flags_t b_flags; /* status flags */ - struct semaphore b_sema; /* semaphore for lockables */ - - struct list_head b_lru; /* lru list */ - wait_queue_head_t b_waiters; /* unpin waiters */ - struct list_head b_list; - struct xfs_perag *b_pag; /* contains rbtree root */ - xfs_buftarg_t *b_target; /* buffer target (device) */ - xfs_daddr_t b_bn; /* block number for I/O */ - size_t b_count_desired;/* desired transfer size */ - void *b_addr; /* virtual address of buffer */ - struct work_struct b_iodone_work; - xfs_buf_iodone_t b_iodone; /* I/O completion function */ - struct completion b_iowait; /* queue for I/O waiters */ - void *b_fspriv; - struct xfs_trans *b_transp; - struct page **b_pages; /* array of page pointers */ - struct page *b_page_array[XB_PAGES]; /* inline pages */ - unsigned long b_queuetime; /* time buffer was queued */ - atomic_t b_pin_count; /* pin count */ - atomic_t b_io_remaining; /* #outstanding I/O requests */ - unsigned int b_page_count; /* size of page array */ - unsigned int b_offset; /* page offset in first page */ - unsigned short b_error; /* error code on I/O */ -#ifdef XFS_BUF_LOCK_TRACKING - int b_last_holder; -#endif -} xfs_buf_t; - - -/* Finding and Reading Buffers */ -extern xfs_buf_t *_xfs_buf_find(xfs_buftarg_t *, xfs_off_t, size_t, - xfs_buf_flags_t, xfs_buf_t *); -#define xfs_incore(buftarg,blkno,len,lockit) \ - _xfs_buf_find(buftarg, blkno ,len, lockit, NULL) - -extern xfs_buf_t *xfs_buf_get(xfs_buftarg_t *, xfs_off_t, size_t, - xfs_buf_flags_t); -extern xfs_buf_t *xfs_buf_read(xfs_buftarg_t *, xfs_off_t, size_t, - xfs_buf_flags_t); - -extern xfs_buf_t *xfs_buf_get_empty(size_t, xfs_buftarg_t *); -extern void xfs_buf_set_empty(struct xfs_buf *bp, size_t len); -extern xfs_buf_t *xfs_buf_get_uncached(struct xfs_buftarg *, size_t, int); -extern int xfs_buf_associate_memory(xfs_buf_t *, void *, size_t); -extern void xfs_buf_hold(xfs_buf_t *); -extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t); -struct xfs_buf *xfs_buf_read_uncached(struct xfs_mount *mp, - struct xfs_buftarg *target, - xfs_daddr_t daddr, size_t length, int flags); - -/* Releasing Buffers */ -extern void xfs_buf_free(xfs_buf_t *); -extern void xfs_buf_rele(xfs_buf_t *); - -/* Locking and Unlocking Buffers */ -extern int xfs_buf_trylock(xfs_buf_t *); -extern void xfs_buf_lock(xfs_buf_t *); -extern void xfs_buf_unlock(xfs_buf_t *); -#define xfs_buf_islocked(bp) \ - ((bp)->b_sema.count <= 0) - -/* Buffer Read and Write Routines */ -extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); -extern void xfs_bdwrite(void *mp, xfs_buf_t *bp); - -extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *); -extern int xfs_bdstrat_cb(struct xfs_buf *); - -extern void xfs_buf_ioend(xfs_buf_t *, int); -extern void xfs_buf_ioerror(xfs_buf_t *, int); -extern int xfs_buf_iorequest(xfs_buf_t *); -extern int xfs_buf_iowait(xfs_buf_t *); -extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *, - xfs_buf_rw_t); -#define xfs_buf_zero(bp, off, len) \ - xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) - -static inline int xfs_buf_geterror(xfs_buf_t *bp) -{ - return bp ? bp->b_error : ENOMEM; -} - -/* Buffer Utility Routines */ -extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); - -/* Delayed Write Buffer Routines */ -extern void xfs_buf_delwri_dequeue(xfs_buf_t *); -extern void xfs_buf_delwri_promote(xfs_buf_t *); - -/* Buffer Daemon Setup Routines */ -extern int xfs_buf_init(void); -extern void xfs_buf_terminate(void); - -static inline const char * -xfs_buf_target_name(struct xfs_buftarg *target) -{ - static char __b[BDEVNAME_SIZE]; - - return bdevname(target->bt_bdev, __b); -} - - -#define XFS_BUF_ZEROFLAGS(bp) \ - ((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI| \ - XBF_SYNCIO|XBF_FUA|XBF_FLUSH)) - -void xfs_buf_stale(struct xfs_buf *bp); -#define XFS_BUF_STALE(bp) xfs_buf_stale(bp); -#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XBF_STALE) -#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XBF_STALE) -#define XFS_BUF_SUPER_STALE(bp) do { \ - XFS_BUF_STALE(bp); \ - xfs_buf_delwri_dequeue(bp); \ - XFS_BUF_DONE(bp); \ - } while (0) - -#define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI) -#define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp) -#define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI) - -#define XFS_BUF_DONE(bp) ((bp)->b_flags |= XBF_DONE) -#define XFS_BUF_UNDONE(bp) ((bp)->b_flags &= ~XBF_DONE) -#define XFS_BUF_ISDONE(bp) ((bp)->b_flags & XBF_DONE) - -#define XFS_BUF_ASYNC(bp) ((bp)->b_flags |= XBF_ASYNC) -#define XFS_BUF_UNASYNC(bp) ((bp)->b_flags &= ~XBF_ASYNC) -#define XFS_BUF_ISASYNC(bp) ((bp)->b_flags & XBF_ASYNC) - -#define XFS_BUF_READ(bp) ((bp)->b_flags |= XBF_READ) -#define XFS_BUF_UNREAD(bp) ((bp)->b_flags &= ~XBF_READ) -#define XFS_BUF_ISREAD(bp) ((bp)->b_flags & XBF_READ) - -#define XFS_BUF_WRITE(bp) ((bp)->b_flags |= XBF_WRITE) -#define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) -#define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) - -#define XFS_BUF_ADDR(bp) ((bp)->b_bn) -#define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) -#define XFS_BUF_OFFSET(bp) ((bp)->b_file_offset) -#define XFS_BUF_SET_OFFSET(bp, off) ((bp)->b_file_offset = (off)) -#define XFS_BUF_COUNT(bp) ((bp)->b_count_desired) -#define XFS_BUF_SET_COUNT(bp, cnt) ((bp)->b_count_desired = (cnt)) -#define XFS_BUF_SIZE(bp) ((bp)->b_buffer_length) -#define XFS_BUF_SET_SIZE(bp, cnt) ((bp)->b_buffer_length = (cnt)) - -static inline void -xfs_buf_set_ref( - struct xfs_buf *bp, - int lru_ref) -{ - atomic_set(&bp->b_lru_ref, lru_ref); -} -#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) xfs_buf_set_ref(bp, ref) -#define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) - -static inline int xfs_buf_ispinned(struct xfs_buf *bp) -{ - return atomic_read(&bp->b_pin_count); -} - -#define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); - -static inline void xfs_buf_relse(xfs_buf_t *bp) -{ - xfs_buf_unlock(bp); - xfs_buf_rele(bp); -} - -/* - * Handling of buftargs. - */ -extern xfs_buftarg_t *xfs_alloc_buftarg(struct xfs_mount *, - struct block_device *, int, const char *); -extern void xfs_free_buftarg(struct xfs_mount *, struct xfs_buftarg *); -extern void xfs_wait_buftarg(xfs_buftarg_t *); -extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int); -extern int xfs_flush_buftarg(xfs_buftarg_t *, int); - -#ifdef CONFIG_KDB_MODULES -extern struct list_head *xfs_get_buftarg_list(void); -#endif - -#define xfs_getsize_buftarg(buftarg) block_size((buftarg)->bt_bdev) -#define xfs_readonly_buftarg(buftarg) bdev_read_only((buftarg)->bt_bdev) - -#define xfs_binval(buftarg) xfs_flush_buftarg(buftarg, 1) -#define XFS_bflush(buftarg) xfs_flush_buftarg(buftarg, 1) - -#endif /* __XFS_BUF_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_discard.c b/fs/xfs/linux-2.6/xfs_discard.c deleted file mode 100644 index 244e797dae32..000000000000 --- a/fs/xfs/linux-2.6/xfs_discard.c +++ /dev/null @@ -1,222 +0,0 @@ -/* - * Copyright (C) 2010 Red Hat, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_sb.h" -#include "xfs_inum.h" -#include "xfs_log.h" -#include "xfs_ag.h" -#include "xfs_mount.h" -#include "xfs_quota.h" -#include "xfs_trans.h" -#include "xfs_alloc_btree.h" -#include "xfs_bmap_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_btree.h" -#include "xfs_inode.h" -#include "xfs_alloc.h" -#include "xfs_error.h" -#include "xfs_discard.h" -#include "xfs_trace.h" - -STATIC int -xfs_trim_extents( - struct xfs_mount *mp, - xfs_agnumber_t agno, - xfs_fsblock_t start, - xfs_fsblock_t len, - xfs_fsblock_t minlen, - __uint64_t *blocks_trimmed) -{ - struct block_device *bdev = mp->m_ddev_targp->bt_bdev; - struct xfs_btree_cur *cur; - struct xfs_buf *agbp; - struct xfs_perag *pag; - int error; - int i; - - pag = xfs_perag_get(mp, agno); - - error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp); - if (error || !agbp) - goto out_put_perag; - - cur = xfs_allocbt_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_CNT); - - /* - * Force out the log. This means any transactions that might have freed - * space before we took the AGF buffer lock are now on disk, and the - * volatile disk cache is flushed. - */ - xfs_log_force(mp, XFS_LOG_SYNC); - - /* - * Look up the longest btree in the AGF and start with it. - */ - error = xfs_alloc_lookup_le(cur, 0, - XFS_BUF_TO_AGF(agbp)->agf_longest, &i); - if (error) - goto out_del_cursor; - - /* - * Loop until we are done with all extents that are large - * enough to be worth discarding. - */ - while (i) { - xfs_agblock_t fbno; - xfs_extlen_t flen; - - error = xfs_alloc_get_rec(cur, &fbno, &flen, &i); - if (error) - goto out_del_cursor; - XFS_WANT_CORRUPTED_GOTO(i == 1, out_del_cursor); - ASSERT(flen <= XFS_BUF_TO_AGF(agbp)->agf_longest); - - /* - * Too small? Give up. - */ - if (flen < minlen) { - trace_xfs_discard_toosmall(mp, agno, fbno, flen); - goto out_del_cursor; - } - - /* - * If the extent is entirely outside of the range we are - * supposed to discard skip it. Do not bother to trim - * down partially overlapping ranges for now. - */ - if (XFS_AGB_TO_FSB(mp, agno, fbno) + flen < start || - XFS_AGB_TO_FSB(mp, agno, fbno) >= start + len) { - trace_xfs_discard_exclude(mp, agno, fbno, flen); - goto next_extent; - } - - /* - * If any blocks in the range are still busy, skip the - * discard and try again the next time. - */ - if (xfs_alloc_busy_search(mp, agno, fbno, flen)) { - trace_xfs_discard_busy(mp, agno, fbno, flen); - goto next_extent; - } - - trace_xfs_discard_extent(mp, agno, fbno, flen); - error = -blkdev_issue_discard(bdev, - XFS_AGB_TO_DADDR(mp, agno, fbno), - XFS_FSB_TO_BB(mp, flen), - GFP_NOFS, 0); - if (error) - goto out_del_cursor; - *blocks_trimmed += flen; - -next_extent: - error = xfs_btree_decrement(cur, 0, &i); - if (error) - goto out_del_cursor; - } - -out_del_cursor: - xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); - xfs_buf_relse(agbp); -out_put_perag: - xfs_perag_put(pag); - return error; -} - -int -xfs_ioc_trim( - struct xfs_mount *mp, - struct fstrim_range __user *urange) -{ - struct request_queue *q = mp->m_ddev_targp->bt_bdev->bd_disk->queue; - unsigned int granularity = q->limits.discard_granularity; - struct fstrim_range range; - xfs_fsblock_t start, len, minlen; - xfs_agnumber_t start_agno, end_agno, agno; - __uint64_t blocks_trimmed = 0; - int error, last_error = 0; - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - if (!blk_queue_discard(q)) - return -XFS_ERROR(EOPNOTSUPP); - if (copy_from_user(&range, urange, sizeof(range))) - return -XFS_ERROR(EFAULT); - - /* - * Truncating down the len isn't actually quite correct, but using - * XFS_B_TO_FSB would mean we trivially get overflows for values - * of ULLONG_MAX or slightly lower. And ULLONG_MAX is the default - * used by the fstrim application. In the end it really doesn't - * matter as trimming blocks is an advisory interface. - */ - start = XFS_B_TO_FSBT(mp, range.start); - len = XFS_B_TO_FSBT(mp, range.len); - minlen = XFS_B_TO_FSB(mp, max_t(u64, granularity, range.minlen)); - - start_agno = XFS_FSB_TO_AGNO(mp, start); - if (start_agno >= mp->m_sb.sb_agcount) - return -XFS_ERROR(EINVAL); - - end_agno = XFS_FSB_TO_AGNO(mp, start + len); - if (end_agno >= mp->m_sb.sb_agcount) - end_agno = mp->m_sb.sb_agcount - 1; - - for (agno = start_agno; agno <= end_agno; agno++) { - error = -xfs_trim_extents(mp, agno, start, len, minlen, - &blocks_trimmed); - if (error) - last_error = error; - } - - if (last_error) - return last_error; - - range.len = XFS_FSB_TO_B(mp, blocks_trimmed); - if (copy_to_user(urange, &range, sizeof(range))) - return -XFS_ERROR(EFAULT); - return 0; -} - -int -xfs_discard_extents( - struct xfs_mount *mp, - struct list_head *list) -{ - struct xfs_busy_extent *busyp; - int error = 0; - - list_for_each_entry(busyp, list, list) { - trace_xfs_discard_extent(mp, busyp->agno, busyp->bno, - busyp->length); - - error = -blkdev_issue_discard(mp->m_ddev_targp->bt_bdev, - XFS_AGB_TO_DADDR(mp, busyp->agno, busyp->bno), - XFS_FSB_TO_BB(mp, busyp->length), - GFP_NOFS, 0); - if (error && error != EOPNOTSUPP) { - xfs_info(mp, - "discard failed for extent [0x%llu,%u], error %d", - (unsigned long long)busyp->bno, - busyp->length, - error); - return error; - } - } - - return 0; -} diff --git a/fs/xfs/linux-2.6/xfs_discard.h b/fs/xfs/linux-2.6/xfs_discard.h deleted file mode 100644 index 344879aea646..000000000000 --- a/fs/xfs/linux-2.6/xfs_discard.h +++ /dev/null @@ -1,10 +0,0 @@ -#ifndef XFS_DISCARD_H -#define XFS_DISCARD_H 1 - -struct fstrim_range; -struct list_head; - -extern int xfs_ioc_trim(struct xfs_mount *, struct fstrim_range __user *); -extern int xfs_discard_extents(struct xfs_mount *, struct list_head *); - -#endif /* XFS_DISCARD_H */ diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/linux-2.6/xfs_export.c deleted file mode 100644 index 75e5d322e48f..000000000000 --- a/fs/xfs/linux-2.6/xfs_export.c +++ /dev/null @@ -1,250 +0,0 @@ -/* - * Copyright (c) 2004-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_types.h" -#include "xfs_inum.h" -#include "xfs_log.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_mount.h" -#include "xfs_export.h" -#include "xfs_vnodeops.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_trace.h" - -/* - * Note that we only accept fileids which are long enough rather than allow - * the parent generation number to default to zero. XFS considers zero a - * valid generation number not an invalid/wildcard value. - */ -static int xfs_fileid_length(int fileid_type) -{ - switch (fileid_type) { - case FILEID_INO32_GEN: - return 2; - case FILEID_INO32_GEN_PARENT: - return 4; - case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG: - return 3; - case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: - return 6; - } - return 255; /* invalid */ -} - -STATIC int -xfs_fs_encode_fh( - struct dentry *dentry, - __u32 *fh, - int *max_len, - int connectable) -{ - struct fid *fid = (struct fid *)fh; - struct xfs_fid64 *fid64 = (struct xfs_fid64 *)fh; - struct inode *inode = dentry->d_inode; - int fileid_type; - int len; - - /* Directories don't need their parent encoded, they have ".." */ - if (S_ISDIR(inode->i_mode) || !connectable) - fileid_type = FILEID_INO32_GEN; - else - fileid_type = FILEID_INO32_GEN_PARENT; - - /* - * If the the filesystem may contain 64bit inode numbers, we need - * to use larger file handles that can represent them. - * - * While we only allocate inodes that do not fit into 32 bits any - * large enough filesystem may contain them, thus the slightly - * confusing looking conditional below. - */ - if (!(XFS_M(inode->i_sb)->m_flags & XFS_MOUNT_SMALL_INUMS) || - (XFS_M(inode->i_sb)->m_flags & XFS_MOUNT_32BITINODES)) - fileid_type |= XFS_FILEID_TYPE_64FLAG; - - /* - * Only encode if there is enough space given. In practice - * this means we can't export a filesystem with 64bit inodes - * over NFSv2 with the subtree_check export option; the other - * seven combinations work. The real answer is "don't use v2". - */ - len = xfs_fileid_length(fileid_type); - if (*max_len < len) { - *max_len = len; - return 255; - } - *max_len = len; - - switch (fileid_type) { - case FILEID_INO32_GEN_PARENT: - spin_lock(&dentry->d_lock); - fid->i32.parent_ino = dentry->d_parent->d_inode->i_ino; - fid->i32.parent_gen = dentry->d_parent->d_inode->i_generation; - spin_unlock(&dentry->d_lock); - /*FALLTHRU*/ - case FILEID_INO32_GEN: - fid->i32.ino = inode->i_ino; - fid->i32.gen = inode->i_generation; - break; - case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: - spin_lock(&dentry->d_lock); - fid64->parent_ino = dentry->d_parent->d_inode->i_ino; - fid64->parent_gen = dentry->d_parent->d_inode->i_generation; - spin_unlock(&dentry->d_lock); - /*FALLTHRU*/ - case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG: - fid64->ino = inode->i_ino; - fid64->gen = inode->i_generation; - break; - } - - return fileid_type; -} - -STATIC struct inode * -xfs_nfs_get_inode( - struct super_block *sb, - u64 ino, - u32 generation) - { - xfs_mount_t *mp = XFS_M(sb); - xfs_inode_t *ip; - int error; - - /* - * NFS can sometimes send requests for ino 0. Fail them gracefully. - */ - if (ino == 0) - return ERR_PTR(-ESTALE); - - /* - * The XFS_IGET_UNTRUSTED means that an invalid inode number is just - * fine and not an indication of a corrupted filesystem as clients can - * send invalid file handles and we have to handle it gracefully.. - */ - error = xfs_iget(mp, NULL, ino, XFS_IGET_UNTRUSTED, 0, &ip); - if (error) { - /* - * EINVAL means the inode cluster doesn't exist anymore. - * This implies the filehandle is stale, so we should - * translate it here. - * We don't use ESTALE directly down the chain to not - * confuse applications using bulkstat that expect EINVAL. - */ - if (error == EINVAL || error == ENOENT) - error = ESTALE; - return ERR_PTR(-error); - } - - if (ip->i_d.di_gen != generation) { - IRELE(ip); - return ERR_PTR(-ESTALE); - } - - return VFS_I(ip); -} - -STATIC struct dentry * -xfs_fs_fh_to_dentry(struct super_block *sb, struct fid *fid, - int fh_len, int fileid_type) -{ - struct xfs_fid64 *fid64 = (struct xfs_fid64 *)fid; - struct inode *inode = NULL; - - if (fh_len < xfs_fileid_length(fileid_type)) - return NULL; - - switch (fileid_type) { - case FILEID_INO32_GEN_PARENT: - case FILEID_INO32_GEN: - inode = xfs_nfs_get_inode(sb, fid->i32.ino, fid->i32.gen); - break; - case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: - case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG: - inode = xfs_nfs_get_inode(sb, fid64->ino, fid64->gen); - break; - } - - return d_obtain_alias(inode); -} - -STATIC struct dentry * -xfs_fs_fh_to_parent(struct super_block *sb, struct fid *fid, - int fh_len, int fileid_type) -{ - struct xfs_fid64 *fid64 = (struct xfs_fid64 *)fid; - struct inode *inode = NULL; - - switch (fileid_type) { - case FILEID_INO32_GEN_PARENT: - inode = xfs_nfs_get_inode(sb, fid->i32.parent_ino, - fid->i32.parent_gen); - break; - case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: - inode = xfs_nfs_get_inode(sb, fid64->parent_ino, - fid64->parent_gen); - break; - } - - return d_obtain_alias(inode); -} - -STATIC struct dentry * -xfs_fs_get_parent( - struct dentry *child) -{ - int error; - struct xfs_inode *cip; - - error = xfs_lookup(XFS_I(child->d_inode), &xfs_name_dotdot, &cip, NULL); - if (unlikely(error)) - return ERR_PTR(-error); - - return d_obtain_alias(VFS_I(cip)); -} - -STATIC int -xfs_fs_nfs_commit_metadata( - struct inode *inode) -{ - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - int error = 0; - - xfs_ilock(ip, XFS_ILOCK_SHARED); - if (xfs_ipincount(ip)) { - error = _xfs_log_force_lsn(mp, ip->i_itemp->ili_last_lsn, - XFS_LOG_SYNC, NULL); - } - xfs_iunlock(ip, XFS_ILOCK_SHARED); - - return error; -} - -const struct export_operations xfs_export_operations = { - .encode_fh = xfs_fs_encode_fh, - .fh_to_dentry = xfs_fs_fh_to_dentry, - .fh_to_parent = xfs_fs_fh_to_parent, - .get_parent = xfs_fs_get_parent, - .commit_metadata = xfs_fs_nfs_commit_metadata, -}; diff --git a/fs/xfs/linux-2.6/xfs_export.h b/fs/xfs/linux-2.6/xfs_export.h deleted file mode 100644 index 3272b6ae7a35..000000000000 --- a/fs/xfs/linux-2.6/xfs_export.h +++ /dev/null @@ -1,72 +0,0 @@ -/* - * Copyright (c) 2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_EXPORT_H__ -#define __XFS_EXPORT_H__ - -/* - * Common defines for code related to exporting XFS filesystems over NFS. - * - * The NFS fileid goes out on the wire as an array of - * 32bit unsigned ints in host order. There are 5 possible - * formats. - * - * (1) fileid_type=0x00 - * (no fileid data; handled by the generic code) - * - * (2) fileid_type=0x01 - * inode-num - * generation - * - * (3) fileid_type=0x02 - * inode-num - * generation - * parent-inode-num - * parent-generation - * - * (4) fileid_type=0x81 - * inode-num-lo32 - * inode-num-hi32 - * generation - * - * (5) fileid_type=0x82 - * inode-num-lo32 - * inode-num-hi32 - * generation - * parent-inode-num-lo32 - * parent-inode-num-hi32 - * parent-generation - * - * Note, the NFS filehandle also includes an fsid portion which - * may have an inode number in it. That number is hardcoded to - * 32bits and there is no way for XFS to intercept it. In - * practice this means when exporting an XFS filesystem with 64bit - * inodes you should either export the mountpoint (rather than - * a subdirectory) or use the "fsid" export option. - */ - -struct xfs_fid64 { - u64 ino; - u32 gen; - u64 parent_ino; - u32 parent_gen; -} __attribute__((packed)); - -/* This flag goes on the wire. Don't play with it. */ -#define XFS_FILEID_TYPE_64FLAG 0x80 /* NFS fileid has 64bit inodes */ - -#endif /* __XFS_EXPORT_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c deleted file mode 100644 index 7f7b42469ea7..000000000000 --- a/fs/xfs/linux-2.6/xfs_file.c +++ /dev/null @@ -1,1096 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_trans.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_bmap.h" -#include "xfs_error.h" -#include "xfs_vnodeops.h" -#include "xfs_da_btree.h" -#include "xfs_ioctl.h" -#include "xfs_trace.h" - -#include -#include - -static const struct vm_operations_struct xfs_file_vm_ops; - -/* - * Locking primitives for read and write IO paths to ensure we consistently use - * and order the inode->i_mutex, ip->i_lock and ip->i_iolock. - */ -static inline void -xfs_rw_ilock( - struct xfs_inode *ip, - int type) -{ - if (type & XFS_IOLOCK_EXCL) - mutex_lock(&VFS_I(ip)->i_mutex); - xfs_ilock(ip, type); -} - -static inline void -xfs_rw_iunlock( - struct xfs_inode *ip, - int type) -{ - xfs_iunlock(ip, type); - if (type & XFS_IOLOCK_EXCL) - mutex_unlock(&VFS_I(ip)->i_mutex); -} - -static inline void -xfs_rw_ilock_demote( - struct xfs_inode *ip, - int type) -{ - xfs_ilock_demote(ip, type); - if (type & XFS_IOLOCK_EXCL) - mutex_unlock(&VFS_I(ip)->i_mutex); -} - -/* - * xfs_iozero - * - * xfs_iozero clears the specified range of buffer supplied, - * and marks all the affected blocks as valid and modified. If - * an affected block is not allocated, it will be allocated. If - * an affected block is not completely overwritten, and is not - * valid before the operation, it will be read from disk before - * being partially zeroed. - */ -STATIC int -xfs_iozero( - struct xfs_inode *ip, /* inode */ - loff_t pos, /* offset in file */ - size_t count) /* size of data to zero */ -{ - struct page *page; - struct address_space *mapping; - int status; - - mapping = VFS_I(ip)->i_mapping; - do { - unsigned offset, bytes; - void *fsdata; - - offset = (pos & (PAGE_CACHE_SIZE -1)); /* Within page */ - bytes = PAGE_CACHE_SIZE - offset; - if (bytes > count) - bytes = count; - - status = pagecache_write_begin(NULL, mapping, pos, bytes, - AOP_FLAG_UNINTERRUPTIBLE, - &page, &fsdata); - if (status) - break; - - zero_user(page, offset, bytes); - - status = pagecache_write_end(NULL, mapping, pos, bytes, bytes, - page, fsdata); - WARN_ON(status <= 0); /* can't return less than zero! */ - pos += bytes; - count -= bytes; - status = 0; - } while (count); - - return (-status); -} - -STATIC int -xfs_file_fsync( - struct file *file, - loff_t start, - loff_t end, - int datasync) -{ - struct inode *inode = file->f_mapping->host; - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - struct xfs_trans *tp; - int error = 0; - int log_flushed = 0; - - trace_xfs_file_fsync(ip); - - error = filemap_write_and_wait_range(inode->i_mapping, start, end); - if (error) - return error; - - if (XFS_FORCED_SHUTDOWN(mp)) - return -XFS_ERROR(EIO); - - xfs_iflags_clear(ip, XFS_ITRUNCATED); - - xfs_ilock(ip, XFS_IOLOCK_SHARED); - xfs_ioend_wait(ip); - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - - if (mp->m_flags & XFS_MOUNT_BARRIER) { - /* - * If we have an RT and/or log subvolume we need to make sure - * to flush the write cache the device used for file data - * first. This is to ensure newly written file data make - * it to disk before logging the new inode size in case of - * an extending write. - */ - if (XFS_IS_REALTIME_INODE(ip)) - xfs_blkdev_issue_flush(mp->m_rtdev_targp); - else if (mp->m_logdev_targp != mp->m_ddev_targp) - xfs_blkdev_issue_flush(mp->m_ddev_targp); - } - - /* - * We always need to make sure that the required inode state is safe on - * disk. The inode might be clean but we still might need to force the - * log because of committed transactions that haven't hit the disk yet. - * Likewise, there could be unflushed non-transactional changes to the - * inode core that have to go to disk and this requires us to issue - * a synchronous transaction to capture these changes correctly. - * - * This code relies on the assumption that if the i_update_core field - * of the inode is clear and the inode is unpinned then it is clean - * and no action is required. - */ - xfs_ilock(ip, XFS_ILOCK_SHARED); - - /* - * First check if the VFS inode is marked dirty. All the dirtying - * of non-transactional updates no goes through mark_inode_dirty*, - * which allows us to distinguish beteeen pure timestamp updates - * and i_size updates which need to be caught for fdatasync. - * After that also theck for the dirty state in the XFS inode, which - * might gets cleared when the inode gets written out via the AIL - * or xfs_iflush_cluster. - */ - if (((inode->i_state & I_DIRTY_DATASYNC) || - ((inode->i_state & I_DIRTY_SYNC) && !datasync)) && - ip->i_update_core) { - /* - * Kick off a transaction to log the inode core to get the - * updates. The sync transaction will also force the log. - */ - xfs_iunlock(ip, XFS_ILOCK_SHARED); - tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); - error = xfs_trans_reserve(tp, 0, - XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return -error; - } - xfs_ilock(ip, XFS_ILOCK_EXCL); - - /* - * Note - it's possible that we might have pushed ourselves out - * of the way during trans_reserve which would flush the inode. - * But there's no guarantee that the inode buffer has actually - * gone out yet (it's delwri). Plus the buffer could be pinned - * anyway if it's part of an inode in another recent - * transaction. So we play it safe and fire off the - * transaction anyway. - */ - xfs_trans_ijoin(tp, ip); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - xfs_trans_set_sync(tp); - error = _xfs_trans_commit(tp, 0, &log_flushed); - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } else { - /* - * Timestamps/size haven't changed since last inode flush or - * inode transaction commit. That means either nothing got - * written or a transaction committed which caught the updates. - * If the latter happened and the transaction hasn't hit the - * disk yet, the inode will be still be pinned. If it is, - * force the log. - */ - if (xfs_ipincount(ip)) { - error = _xfs_log_force_lsn(mp, - ip->i_itemp->ili_last_lsn, - XFS_LOG_SYNC, &log_flushed); - } - xfs_iunlock(ip, XFS_ILOCK_SHARED); - } - - /* - * If we only have a single device, and the log force about was - * a no-op we might have to flush the data device cache here. - * This can only happen for fdatasync/O_DSYNC if we were overwriting - * an already allocated file and thus do not have any metadata to - * commit. - */ - if ((mp->m_flags & XFS_MOUNT_BARRIER) && - mp->m_logdev_targp == mp->m_ddev_targp && - !XFS_IS_REALTIME_INODE(ip) && - !log_flushed) - xfs_blkdev_issue_flush(mp->m_ddev_targp); - - return -error; -} - -STATIC ssize_t -xfs_file_aio_read( - struct kiocb *iocb, - const struct iovec *iovp, - unsigned long nr_segs, - loff_t pos) -{ - struct file *file = iocb->ki_filp; - struct inode *inode = file->f_mapping->host; - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - size_t size = 0; - ssize_t ret = 0; - int ioflags = 0; - xfs_fsize_t n; - unsigned long seg; - - XFS_STATS_INC(xs_read_calls); - - BUG_ON(iocb->ki_pos != pos); - - if (unlikely(file->f_flags & O_DIRECT)) - ioflags |= IO_ISDIRECT; - if (file->f_mode & FMODE_NOCMTIME) - ioflags |= IO_INVIS; - - /* START copy & waste from filemap.c */ - for (seg = 0; seg < nr_segs; seg++) { - const struct iovec *iv = &iovp[seg]; - - /* - * If any segment has a negative length, or the cumulative - * length ever wraps negative then return -EINVAL. - */ - size += iv->iov_len; - if (unlikely((ssize_t)(size|iv->iov_len) < 0)) - return XFS_ERROR(-EINVAL); - } - /* END copy & waste from filemap.c */ - - if (unlikely(ioflags & IO_ISDIRECT)) { - xfs_buftarg_t *target = - XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp; - if ((iocb->ki_pos & target->bt_smask) || - (size & target->bt_smask)) { - if (iocb->ki_pos == ip->i_size) - return 0; - return -XFS_ERROR(EINVAL); - } - } - - n = XFS_MAXIOFFSET(mp) - iocb->ki_pos; - if (n <= 0 || size == 0) - return 0; - - if (n < size) - size = n; - - if (XFS_FORCED_SHUTDOWN(mp)) - return -EIO; - - if (unlikely(ioflags & IO_ISDIRECT)) { - xfs_rw_ilock(ip, XFS_IOLOCK_EXCL); - - if (inode->i_mapping->nrpages) { - ret = -xfs_flushinval_pages(ip, - (iocb->ki_pos & PAGE_CACHE_MASK), - -1, FI_REMAPF_LOCKED); - if (ret) { - xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL); - return ret; - } - } - xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); - } else - xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); - - trace_xfs_file_read(ip, size, iocb->ki_pos, ioflags); - - ret = generic_file_aio_read(iocb, iovp, nr_segs, iocb->ki_pos); - if (ret > 0) - XFS_STATS_ADD(xs_read_bytes, ret); - - xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); - return ret; -} - -STATIC ssize_t -xfs_file_splice_read( - struct file *infilp, - loff_t *ppos, - struct pipe_inode_info *pipe, - size_t count, - unsigned int flags) -{ - struct xfs_inode *ip = XFS_I(infilp->f_mapping->host); - int ioflags = 0; - ssize_t ret; - - XFS_STATS_INC(xs_read_calls); - - if (infilp->f_mode & FMODE_NOCMTIME) - ioflags |= IO_INVIS; - - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; - - xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); - - trace_xfs_file_splice_read(ip, count, *ppos, ioflags); - - ret = generic_file_splice_read(infilp, ppos, pipe, count, flags); - if (ret > 0) - XFS_STATS_ADD(xs_read_bytes, ret); - - xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); - return ret; -} - -STATIC void -xfs_aio_write_isize_update( - struct inode *inode, - loff_t *ppos, - ssize_t bytes_written) -{ - struct xfs_inode *ip = XFS_I(inode); - xfs_fsize_t isize = i_size_read(inode); - - if (bytes_written > 0) - XFS_STATS_ADD(xs_write_bytes, bytes_written); - - if (unlikely(bytes_written < 0 && bytes_written != -EFAULT && - *ppos > isize)) - *ppos = isize; - - if (*ppos > ip->i_size) { - xfs_rw_ilock(ip, XFS_ILOCK_EXCL); - if (*ppos > ip->i_size) - ip->i_size = *ppos; - xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); - } -} - -/* - * If this was a direct or synchronous I/O that failed (such as ENOSPC) then - * part of the I/O may have been written to disk before the error occurred. In - * this case the on-disk file size may have been adjusted beyond the in-memory - * file size and now needs to be truncated back. - */ -STATIC void -xfs_aio_write_newsize_update( - struct xfs_inode *ip) -{ - if (ip->i_new_size) { - xfs_rw_ilock(ip, XFS_ILOCK_EXCL); - ip->i_new_size = 0; - if (ip->i_d.di_size > ip->i_size) - ip->i_d.di_size = ip->i_size; - xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); - } -} - -/* - * xfs_file_splice_write() does not use xfs_rw_ilock() because - * generic_file_splice_write() takes the i_mutex itself. This, in theory, - * couuld cause lock inversions between the aio_write path and the splice path - * if someone is doing concurrent splice(2) based writes and write(2) based - * writes to the same inode. The only real way to fix this is to re-implement - * the generic code here with correct locking orders. - */ -STATIC ssize_t -xfs_file_splice_write( - struct pipe_inode_info *pipe, - struct file *outfilp, - loff_t *ppos, - size_t count, - unsigned int flags) -{ - struct inode *inode = outfilp->f_mapping->host; - struct xfs_inode *ip = XFS_I(inode); - xfs_fsize_t new_size; - int ioflags = 0; - ssize_t ret; - - XFS_STATS_INC(xs_write_calls); - - if (outfilp->f_mode & FMODE_NOCMTIME) - ioflags |= IO_INVIS; - - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; - - xfs_ilock(ip, XFS_IOLOCK_EXCL); - - new_size = *ppos + count; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - if (new_size > ip->i_size) - ip->i_new_size = new_size; - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - trace_xfs_file_splice_write(ip, count, *ppos, ioflags); - - ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags); - - xfs_aio_write_isize_update(inode, ppos, ret); - xfs_aio_write_newsize_update(ip); - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return ret; -} - -/* - * This routine is called to handle zeroing any space in the last - * block of the file that is beyond the EOF. We do this since the - * size is being increased without writing anything to that block - * and we don't want anyone to read the garbage on the disk. - */ -STATIC int /* error (positive) */ -xfs_zero_last_block( - xfs_inode_t *ip, - xfs_fsize_t offset, - xfs_fsize_t isize) -{ - xfs_fileoff_t last_fsb; - xfs_mount_t *mp = ip->i_mount; - int nimaps; - int zero_offset; - int zero_len; - int error = 0; - xfs_bmbt_irec_t imap; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - - zero_offset = XFS_B_FSB_OFFSET(mp, isize); - if (zero_offset == 0) { - /* - * There are no extra bytes in the last block on disk to - * zero, so return. - */ - return 0; - } - - last_fsb = XFS_B_TO_FSBT(mp, isize); - nimaps = 1; - error = xfs_bmapi(NULL, ip, last_fsb, 1, 0, NULL, 0, &imap, - &nimaps, NULL); - if (error) { - return error; - } - ASSERT(nimaps > 0); - /* - * If the block underlying isize is just a hole, then there - * is nothing to zero. - */ - if (imap.br_startblock == HOLESTARTBLOCK) { - return 0; - } - /* - * Zero the part of the last block beyond the EOF, and write it - * out sync. We need to drop the ilock while we do this so we - * don't deadlock when the buffer cache calls back to us. - */ - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - zero_len = mp->m_sb.sb_blocksize - zero_offset; - if (isize + zero_len > offset) - zero_len = offset - isize; - error = xfs_iozero(ip, isize, zero_len); - - xfs_ilock(ip, XFS_ILOCK_EXCL); - ASSERT(error >= 0); - return error; -} - -/* - * Zero any on disk space between the current EOF and the new, - * larger EOF. This handles the normal case of zeroing the remainder - * of the last block in the file and the unusual case of zeroing blocks - * out beyond the size of the file. This second case only happens - * with fixed size extents and when the system crashes before the inode - * size was updated but after blocks were allocated. If fill is set, - * then any holes in the range are filled and zeroed. If not, the holes - * are left alone as holes. - */ - -int /* error (positive) */ -xfs_zero_eof( - xfs_inode_t *ip, - xfs_off_t offset, /* starting I/O offset */ - xfs_fsize_t isize) /* current inode size */ -{ - xfs_mount_t *mp = ip->i_mount; - xfs_fileoff_t start_zero_fsb; - xfs_fileoff_t end_zero_fsb; - xfs_fileoff_t zero_count_fsb; - xfs_fileoff_t last_fsb; - xfs_fileoff_t zero_off; - xfs_fsize_t zero_len; - int nimaps; - int error = 0; - xfs_bmbt_irec_t imap; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); - ASSERT(offset > isize); - - /* - * First handle zeroing the block on which isize resides. - * We only zero a part of that block so it is handled specially. - */ - error = xfs_zero_last_block(ip, offset, isize); - if (error) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); - return error; - } - - /* - * Calculate the range between the new size and the old - * where blocks needing to be zeroed may exist. To get the - * block where the last byte in the file currently resides, - * we need to subtract one from the size and truncate back - * to a block boundary. We subtract 1 in case the size is - * exactly on a block boundary. - */ - last_fsb = isize ? XFS_B_TO_FSBT(mp, isize - 1) : (xfs_fileoff_t)-1; - start_zero_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize); - end_zero_fsb = XFS_B_TO_FSBT(mp, offset - 1); - ASSERT((xfs_sfiloff_t)last_fsb < (xfs_sfiloff_t)start_zero_fsb); - if (last_fsb == end_zero_fsb) { - /* - * The size was only incremented on its last block. - * We took care of that above, so just return. - */ - return 0; - } - - ASSERT(start_zero_fsb <= end_zero_fsb); - while (start_zero_fsb <= end_zero_fsb) { - nimaps = 1; - zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; - error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb, - 0, NULL, 0, &imap, &nimaps, NULL); - if (error) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); - return error; - } - ASSERT(nimaps > 0); - - if (imap.br_state == XFS_EXT_UNWRITTEN || - imap.br_startblock == HOLESTARTBLOCK) { - /* - * This loop handles initializing pages that were - * partially initialized by the code below this - * loop. It basically zeroes the part of the page - * that sits on a hole and sets the page as P_HOLE - * and calls remapf if it is a mapped file. - */ - start_zero_fsb = imap.br_startoff + imap.br_blockcount; - ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); - continue; - } - - /* - * There are blocks we need to zero. - * Drop the inode lock while we're doing the I/O. - * We'll still have the iolock to protect us. - */ - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - zero_off = XFS_FSB_TO_B(mp, start_zero_fsb); - zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount); - - if ((zero_off + zero_len) > offset) - zero_len = offset - zero_off; - - error = xfs_iozero(ip, zero_off, zero_len); - if (error) { - goto out_lock; - } - - start_zero_fsb = imap.br_startoff + imap.br_blockcount; - ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); - - xfs_ilock(ip, XFS_ILOCK_EXCL); - } - - return 0; - -out_lock: - xfs_ilock(ip, XFS_ILOCK_EXCL); - ASSERT(error >= 0); - return error; -} - -/* - * Common pre-write limit and setup checks. - * - * Returns with iolock held according to @iolock. - */ -STATIC ssize_t -xfs_file_aio_write_checks( - struct file *file, - loff_t *pos, - size_t *count, - int *iolock) -{ - struct inode *inode = file->f_mapping->host; - struct xfs_inode *ip = XFS_I(inode); - xfs_fsize_t new_size; - int error = 0; - - error = generic_write_checks(file, pos, count, S_ISBLK(inode->i_mode)); - if (error) { - xfs_rw_iunlock(ip, XFS_ILOCK_EXCL | *iolock); - *iolock = 0; - return error; - } - - new_size = *pos + *count; - if (new_size > ip->i_size) - ip->i_new_size = new_size; - - if (likely(!(file->f_mode & FMODE_NOCMTIME))) - file_update_time(file); - - /* - * If the offset is beyond the size of the file, we need to zero any - * blocks that fall between the existing EOF and the start of this - * write. - */ - if (*pos > ip->i_size) - error = -xfs_zero_eof(ip, *pos, ip->i_size); - - xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); - if (error) - return error; - - /* - * If we're writing the file then make sure to clear the setuid and - * setgid bits if the process is not being run by root. This keeps - * people from modifying setuid and setgid binaries. - */ - return file_remove_suid(file); - -} - -/* - * xfs_file_dio_aio_write - handle direct IO writes - * - * Lock the inode appropriately to prepare for and issue a direct IO write. - * By separating it from the buffered write path we remove all the tricky to - * follow locking changes and looping. - * - * If there are cached pages or we're extending the file, we need IOLOCK_EXCL - * until we're sure the bytes at the new EOF have been zeroed and/or the cached - * pages are flushed out. - * - * In most cases the direct IO writes will be done holding IOLOCK_SHARED - * allowing them to be done in parallel with reads and other direct IO writes. - * However, if the IO is not aligned to filesystem blocks, the direct IO layer - * needs to do sub-block zeroing and that requires serialisation against other - * direct IOs to the same block. In this case we need to serialise the - * submission of the unaligned IOs so that we don't get racing block zeroing in - * the dio layer. To avoid the problem with aio, we also need to wait for - * outstanding IOs to complete so that unwritten extent conversion is completed - * before we try to map the overlapping block. This is currently implemented by - * hitting it with a big hammer (i.e. xfs_ioend_wait()). - * - * Returns with locks held indicated by @iolock and errors indicated by - * negative return values. - */ -STATIC ssize_t -xfs_file_dio_aio_write( - struct kiocb *iocb, - const struct iovec *iovp, - unsigned long nr_segs, - loff_t pos, - size_t ocount, - int *iolock) -{ - struct file *file = iocb->ki_filp; - struct address_space *mapping = file->f_mapping; - struct inode *inode = mapping->host; - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - ssize_t ret = 0; - size_t count = ocount; - int unaligned_io = 0; - struct xfs_buftarg *target = XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp; - - *iolock = 0; - if ((pos & target->bt_smask) || (count & target->bt_smask)) - return -XFS_ERROR(EINVAL); - - if ((pos & mp->m_blockmask) || ((pos + count) & mp->m_blockmask)) - unaligned_io = 1; - - if (unaligned_io || mapping->nrpages || pos > ip->i_size) - *iolock = XFS_IOLOCK_EXCL; - else - *iolock = XFS_IOLOCK_SHARED; - xfs_rw_ilock(ip, XFS_ILOCK_EXCL | *iolock); - - ret = xfs_file_aio_write_checks(file, &pos, &count, iolock); - if (ret) - return ret; - - if (mapping->nrpages) { - WARN_ON(*iolock != XFS_IOLOCK_EXCL); - ret = -xfs_flushinval_pages(ip, (pos & PAGE_CACHE_MASK), -1, - FI_REMAPF_LOCKED); - if (ret) - return ret; - } - - /* - * If we are doing unaligned IO, wait for all other IO to drain, - * otherwise demote the lock if we had to flush cached pages - */ - if (unaligned_io) - xfs_ioend_wait(ip); - else if (*iolock == XFS_IOLOCK_EXCL) { - xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); - *iolock = XFS_IOLOCK_SHARED; - } - - trace_xfs_file_direct_write(ip, count, iocb->ki_pos, 0); - ret = generic_file_direct_write(iocb, iovp, - &nr_segs, pos, &iocb->ki_pos, count, ocount); - - /* No fallback to buffered IO on errors for XFS. */ - ASSERT(ret < 0 || ret == count); - return ret; -} - -STATIC ssize_t -xfs_file_buffered_aio_write( - struct kiocb *iocb, - const struct iovec *iovp, - unsigned long nr_segs, - loff_t pos, - size_t ocount, - int *iolock) -{ - struct file *file = iocb->ki_filp; - struct address_space *mapping = file->f_mapping; - struct inode *inode = mapping->host; - struct xfs_inode *ip = XFS_I(inode); - ssize_t ret; - int enospc = 0; - size_t count = ocount; - - *iolock = XFS_IOLOCK_EXCL; - xfs_rw_ilock(ip, XFS_ILOCK_EXCL | *iolock); - - ret = xfs_file_aio_write_checks(file, &pos, &count, iolock); - if (ret) - return ret; - - /* We can write back this queue in page reclaim */ - current->backing_dev_info = mapping->backing_dev_info; - -write_retry: - trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, 0); - ret = generic_file_buffered_write(iocb, iovp, nr_segs, - pos, &iocb->ki_pos, count, ret); - /* - * if we just got an ENOSPC, flush the inode now we aren't holding any - * page locks and retry *once* - */ - if (ret == -ENOSPC && !enospc) { - ret = -xfs_flush_pages(ip, 0, -1, 0, FI_NONE); - if (ret) - return ret; - enospc = 1; - goto write_retry; - } - current->backing_dev_info = NULL; - return ret; -} - -STATIC ssize_t -xfs_file_aio_write( - struct kiocb *iocb, - const struct iovec *iovp, - unsigned long nr_segs, - loff_t pos) -{ - struct file *file = iocb->ki_filp; - struct address_space *mapping = file->f_mapping; - struct inode *inode = mapping->host; - struct xfs_inode *ip = XFS_I(inode); - ssize_t ret; - int iolock; - size_t ocount = 0; - - XFS_STATS_INC(xs_write_calls); - - BUG_ON(iocb->ki_pos != pos); - - ret = generic_segment_checks(iovp, &nr_segs, &ocount, VERIFY_READ); - if (ret) - return ret; - - if (ocount == 0) - return 0; - - xfs_wait_for_freeze(ip->i_mount, SB_FREEZE_WRITE); - - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; - - if (unlikely(file->f_flags & O_DIRECT)) - ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos, - ocount, &iolock); - else - ret = xfs_file_buffered_aio_write(iocb, iovp, nr_segs, pos, - ocount, &iolock); - - xfs_aio_write_isize_update(inode, &iocb->ki_pos, ret); - - if (ret <= 0) - goto out_unlock; - - /* Handle various SYNC-type writes */ - if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) { - loff_t end = pos + ret - 1; - int error; - - xfs_rw_iunlock(ip, iolock); - error = xfs_file_fsync(file, pos, end, - (file->f_flags & __O_SYNC) ? 0 : 1); - xfs_rw_ilock(ip, iolock); - if (error) - ret = error; - } - -out_unlock: - xfs_aio_write_newsize_update(ip); - xfs_rw_iunlock(ip, iolock); - return ret; -} - -STATIC long -xfs_file_fallocate( - struct file *file, - int mode, - loff_t offset, - loff_t len) -{ - struct inode *inode = file->f_path.dentry->d_inode; - long error; - loff_t new_size = 0; - xfs_flock64_t bf; - xfs_inode_t *ip = XFS_I(inode); - int cmd = XFS_IOC_RESVSP; - int attr_flags = XFS_ATTR_NOLOCK; - - if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) - return -EOPNOTSUPP; - - bf.l_whence = 0; - bf.l_start = offset; - bf.l_len = len; - - xfs_ilock(ip, XFS_IOLOCK_EXCL); - - if (mode & FALLOC_FL_PUNCH_HOLE) - cmd = XFS_IOC_UNRESVSP; - - /* check the new inode size is valid before allocating */ - if (!(mode & FALLOC_FL_KEEP_SIZE) && - offset + len > i_size_read(inode)) { - new_size = offset + len; - error = inode_newsize_ok(inode, new_size); - if (error) - goto out_unlock; - } - - if (file->f_flags & O_DSYNC) - attr_flags |= XFS_ATTR_SYNC; - - error = -xfs_change_file_space(ip, cmd, &bf, 0, attr_flags); - if (error) - goto out_unlock; - - /* Change file size if needed */ - if (new_size) { - struct iattr iattr; - - iattr.ia_valid = ATTR_SIZE; - iattr.ia_size = new_size; - error = -xfs_setattr_size(ip, &iattr, XFS_ATTR_NOLOCK); - } - -out_unlock: - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return error; -} - - -STATIC int -xfs_file_open( - struct inode *inode, - struct file *file) -{ - if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) - return -EFBIG; - if (XFS_FORCED_SHUTDOWN(XFS_M(inode->i_sb))) - return -EIO; - return 0; -} - -STATIC int -xfs_dir_open( - struct inode *inode, - struct file *file) -{ - struct xfs_inode *ip = XFS_I(inode); - int mode; - int error; - - error = xfs_file_open(inode, file); - if (error) - return error; - - /* - * If there are any blocks, read-ahead block 0 as we're almost - * certain to have the next operation be a read there. - */ - mode = xfs_ilock_map_shared(ip); - if (ip->i_d.di_nextents > 0) - xfs_da_reada_buf(NULL, ip, 0, XFS_DATA_FORK); - xfs_iunlock(ip, mode); - return 0; -} - -STATIC int -xfs_file_release( - struct inode *inode, - struct file *filp) -{ - return -xfs_release(XFS_I(inode)); -} - -STATIC int -xfs_file_readdir( - struct file *filp, - void *dirent, - filldir_t filldir) -{ - struct inode *inode = filp->f_path.dentry->d_inode; - xfs_inode_t *ip = XFS_I(inode); - int error; - size_t bufsize; - - /* - * The Linux API doesn't pass down the total size of the buffer - * we read into down to the filesystem. With the filldir concept - * it's not needed for correct information, but the XFS dir2 leaf - * code wants an estimate of the buffer size to calculate it's - * readahead window and size the buffers used for mapping to - * physical blocks. - * - * Try to give it an estimate that's good enough, maybe at some - * point we can change the ->readdir prototype to include the - * buffer size. For now we use the current glibc buffer size. - */ - bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size); - - error = xfs_readdir(ip, dirent, bufsize, - (xfs_off_t *)&filp->f_pos, filldir); - if (error) - return -error; - return 0; -} - -STATIC int -xfs_file_mmap( - struct file *filp, - struct vm_area_struct *vma) -{ - vma->vm_ops = &xfs_file_vm_ops; - vma->vm_flags |= VM_CAN_NONLINEAR; - - file_accessed(filp); - return 0; -} - -/* - * mmap()d file has taken write protection fault and is being made - * writable. We can set the page state up correctly for a writable - * page, which means we can do correct delalloc accounting (ENOSPC - * checking!) and unwritten extent mapping. - */ -STATIC int -xfs_vm_page_mkwrite( - struct vm_area_struct *vma, - struct vm_fault *vmf) -{ - return block_page_mkwrite(vma, vmf, xfs_get_blocks); -} - -const struct file_operations xfs_file_operations = { - .llseek = generic_file_llseek, - .read = do_sync_read, - .write = do_sync_write, - .aio_read = xfs_file_aio_read, - .aio_write = xfs_file_aio_write, - .splice_read = xfs_file_splice_read, - .splice_write = xfs_file_splice_write, - .unlocked_ioctl = xfs_file_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = xfs_file_compat_ioctl, -#endif - .mmap = xfs_file_mmap, - .open = xfs_file_open, - .release = xfs_file_release, - .fsync = xfs_file_fsync, - .fallocate = xfs_file_fallocate, -}; - -const struct file_operations xfs_dir_file_operations = { - .open = xfs_dir_open, - .read = generic_read_dir, - .readdir = xfs_file_readdir, - .llseek = generic_file_llseek, - .unlocked_ioctl = xfs_file_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = xfs_file_compat_ioctl, -#endif - .fsync = xfs_file_fsync, -}; - -static const struct vm_operations_struct xfs_file_vm_ops = { - .fault = filemap_fault, - .page_mkwrite = xfs_vm_page_mkwrite, -}; diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/linux-2.6/xfs_fs_subr.c deleted file mode 100644 index ed88ed16811c..000000000000 --- a/fs/xfs/linux-2.6/xfs_fs_subr.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright (c) 2000-2002,2005-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_vnodeops.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_trace.h" - -/* - * note: all filemap functions return negative error codes. These - * need to be inverted before returning to the xfs core functions. - */ -void -xfs_tosspages( - xfs_inode_t *ip, - xfs_off_t first, - xfs_off_t last, - int fiopt) -{ - /* can't toss partial tail pages, so mask them out */ - last &= ~(PAGE_SIZE - 1); - truncate_inode_pages_range(VFS_I(ip)->i_mapping, first, last - 1); -} - -int -xfs_flushinval_pages( - xfs_inode_t *ip, - xfs_off_t first, - xfs_off_t last, - int fiopt) -{ - struct address_space *mapping = VFS_I(ip)->i_mapping; - int ret = 0; - - trace_xfs_pagecache_inval(ip, first, last); - - xfs_iflags_clear(ip, XFS_ITRUNCATED); - ret = filemap_write_and_wait_range(mapping, first, - last == -1 ? LLONG_MAX : last); - if (!ret) - truncate_inode_pages_range(mapping, first, last); - return -ret; -} - -int -xfs_flush_pages( - xfs_inode_t *ip, - xfs_off_t first, - xfs_off_t last, - uint64_t flags, - int fiopt) -{ - struct address_space *mapping = VFS_I(ip)->i_mapping; - int ret = 0; - int ret2; - - xfs_iflags_clear(ip, XFS_ITRUNCATED); - ret = -filemap_fdatawrite_range(mapping, first, - last == -1 ? LLONG_MAX : last); - if (flags & XBF_ASYNC) - return ret; - ret2 = xfs_wait_on_pages(ip, first, last); - if (!ret) - ret = ret2; - return ret; -} - -int -xfs_wait_on_pages( - xfs_inode_t *ip, - xfs_off_t first, - xfs_off_t last) -{ - struct address_space *mapping = VFS_I(ip)->i_mapping; - - if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) { - return -filemap_fdatawait_range(mapping, first, - last == -1 ? ip->i_size - 1 : last); - } - return 0; -} diff --git a/fs/xfs/linux-2.6/xfs_globals.c b/fs/xfs/linux-2.6/xfs_globals.c deleted file mode 100644 index 76e81cff70b9..000000000000 --- a/fs/xfs/linux-2.6/xfs_globals.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_sysctl.h" - -/* - * Tunable XFS parameters. xfs_params is required even when CONFIG_SYSCTL=n, - * other XFS code uses these values. Times are measured in centisecs (i.e. - * 100ths of a second). - */ -xfs_param_t xfs_params = { - /* MIN DFLT MAX */ - .sgid_inherit = { 0, 0, 1 }, - .symlink_mode = { 0, 0, 1 }, - .panic_mask = { 0, 0, 255 }, - .error_level = { 0, 3, 11 }, - .syncd_timer = { 1*100, 30*100, 7200*100}, - .stats_clear = { 0, 0, 1 }, - .inherit_sync = { 0, 1, 1 }, - .inherit_nodump = { 0, 1, 1 }, - .inherit_noatim = { 0, 1, 1 }, - .xfs_buf_timer = { 100/2, 1*100, 30*100 }, - .xfs_buf_age = { 1*100, 15*100, 7200*100}, - .inherit_nosym = { 0, 0, 1 }, - .rotorstep = { 1, 1, 255 }, - .inherit_nodfrg = { 0, 1, 1 }, - .fstrm_timer = { 1, 30*100, 3600*100}, -}; diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c deleted file mode 100644 index f7ce7debe14c..000000000000 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ /dev/null @@ -1,1556 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_ioctl.h" -#include "xfs_rtalloc.h" -#include "xfs_itable.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_bmap.h" -#include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_dfrag.h" -#include "xfs_fsops.h" -#include "xfs_vnodeops.h" -#include "xfs_discard.h" -#include "xfs_quota.h" -#include "xfs_inode_item.h" -#include "xfs_export.h" -#include "xfs_trace.h" - -#include -#include -#include -#include -#include -#include -#include - -/* - * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to - * a file or fs handle. - * - * XFS_IOC_PATH_TO_FSHANDLE - * returns fs handle for a mount point or path within that mount point - * XFS_IOC_FD_TO_HANDLE - * returns full handle for a FD opened in user space - * XFS_IOC_PATH_TO_HANDLE - * returns full handle for a path - */ -int -xfs_find_handle( - unsigned int cmd, - xfs_fsop_handlereq_t *hreq) -{ - int hsize; - xfs_handle_t handle; - struct inode *inode; - struct file *file = NULL; - struct path path; - int error; - struct xfs_inode *ip; - - if (cmd == XFS_IOC_FD_TO_HANDLE) { - file = fget(hreq->fd); - if (!file) - return -EBADF; - inode = file->f_path.dentry->d_inode; - } else { - error = user_lpath((const char __user *)hreq->path, &path); - if (error) - return error; - inode = path.dentry->d_inode; - } - ip = XFS_I(inode); - - /* - * We can only generate handles for inodes residing on a XFS filesystem, - * and only for regular files, directories or symbolic links. - */ - error = -EINVAL; - if (inode->i_sb->s_magic != XFS_SB_MAGIC) - goto out_put; - - error = -EBADF; - if (!S_ISREG(inode->i_mode) && - !S_ISDIR(inode->i_mode) && - !S_ISLNK(inode->i_mode)) - goto out_put; - - - memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); - - if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { - /* - * This handle only contains an fsid, zero the rest. - */ - memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); - hsize = sizeof(xfs_fsid_t); - } else { - int lock_mode; - - lock_mode = xfs_ilock_map_shared(ip); - handle.ha_fid.fid_len = sizeof(xfs_fid_t) - - sizeof(handle.ha_fid.fid_len); - handle.ha_fid.fid_pad = 0; - handle.ha_fid.fid_gen = ip->i_d.di_gen; - handle.ha_fid.fid_ino = ip->i_ino; - xfs_iunlock_map_shared(ip, lock_mode); - - hsize = XFS_HSIZE(handle); - } - - error = -EFAULT; - if (copy_to_user(hreq->ohandle, &handle, hsize) || - copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) - goto out_put; - - error = 0; - - out_put: - if (cmd == XFS_IOC_FD_TO_HANDLE) - fput(file); - else - path_put(&path); - return error; -} - -/* - * No need to do permission checks on the various pathname components - * as the handle operations are privileged. - */ -STATIC int -xfs_handle_acceptable( - void *context, - struct dentry *dentry) -{ - return 1; -} - -/* - * Convert userspace handle data into a dentry. - */ -struct dentry * -xfs_handle_to_dentry( - struct file *parfilp, - void __user *uhandle, - u32 hlen) -{ - xfs_handle_t handle; - struct xfs_fid64 fid; - - /* - * Only allow handle opens under a directory. - */ - if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) - return ERR_PTR(-ENOTDIR); - - if (hlen != sizeof(xfs_handle_t)) - return ERR_PTR(-EINVAL); - if (copy_from_user(&handle, uhandle, hlen)) - return ERR_PTR(-EFAULT); - if (handle.ha_fid.fid_len != - sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) - return ERR_PTR(-EINVAL); - - memset(&fid, 0, sizeof(struct fid)); - fid.ino = handle.ha_fid.fid_ino; - fid.gen = handle.ha_fid.fid_gen; - - return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, - FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, - xfs_handle_acceptable, NULL); -} - -STATIC struct dentry * -xfs_handlereq_to_dentry( - struct file *parfilp, - xfs_fsop_handlereq_t *hreq) -{ - return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); -} - -int -xfs_open_by_handle( - struct file *parfilp, - xfs_fsop_handlereq_t *hreq) -{ - const struct cred *cred = current_cred(); - int error; - int fd; - int permflag; - struct file *filp; - struct inode *inode; - struct dentry *dentry; - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - - dentry = xfs_handlereq_to_dentry(parfilp, hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - inode = dentry->d_inode; - - /* Restrict xfs_open_by_handle to directories & regular files. */ - if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { - error = -XFS_ERROR(EPERM); - goto out_dput; - } - -#if BITS_PER_LONG != 32 - hreq->oflags |= O_LARGEFILE; -#endif - - /* Put open permission in namei format. */ - permflag = hreq->oflags; - if ((permflag+1) & O_ACCMODE) - permflag++; - if (permflag & O_TRUNC) - permflag |= 2; - - if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && - (permflag & FMODE_WRITE) && IS_APPEND(inode)) { - error = -XFS_ERROR(EPERM); - goto out_dput; - } - - if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { - error = -XFS_ERROR(EACCES); - goto out_dput; - } - - /* Can't write directories. */ - if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { - error = -XFS_ERROR(EISDIR); - goto out_dput; - } - - fd = get_unused_fd(); - if (fd < 0) { - error = fd; - goto out_dput; - } - - filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), - hreq->oflags, cred); - if (IS_ERR(filp)) { - put_unused_fd(fd); - return PTR_ERR(filp); - } - - if (S_ISREG(inode->i_mode)) { - filp->f_flags |= O_NOATIME; - filp->f_mode |= FMODE_NOCMTIME; - } - - fd_install(fd, filp); - return fd; - - out_dput: - dput(dentry); - return error; -} - -/* - * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's - * unused first argument. - */ -STATIC int -do_readlink( - char __user *buffer, - int buflen, - const char *link) -{ - int len; - - len = PTR_ERR(link); - if (IS_ERR(link)) - goto out; - - len = strlen(link); - if (len > (unsigned) buflen) - len = buflen; - if (copy_to_user(buffer, link, len)) - len = -EFAULT; - out: - return len; -} - - -int -xfs_readlink_by_handle( - struct file *parfilp, - xfs_fsop_handlereq_t *hreq) -{ - struct dentry *dentry; - __u32 olen; - void *link; - int error; - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - - dentry = xfs_handlereq_to_dentry(parfilp, hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - - /* Restrict this handle operation to symlinks only. */ - if (!S_ISLNK(dentry->d_inode->i_mode)) { - error = -XFS_ERROR(EINVAL); - goto out_dput; - } - - if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { - error = -XFS_ERROR(EFAULT); - goto out_dput; - } - - link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); - if (!link) { - error = -XFS_ERROR(ENOMEM); - goto out_dput; - } - - error = -xfs_readlink(XFS_I(dentry->d_inode), link); - if (error) - goto out_kfree; - error = do_readlink(hreq->ohandle, olen, link); - if (error) - goto out_kfree; - - out_kfree: - kfree(link); - out_dput: - dput(dentry); - return error; -} - -STATIC int -xfs_fssetdm_by_handle( - struct file *parfilp, - void __user *arg) -{ - int error; - struct fsdmidata fsd; - xfs_fsop_setdm_handlereq_t dmhreq; - struct dentry *dentry; - - if (!capable(CAP_MKNOD)) - return -XFS_ERROR(EPERM); - if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) - return -XFS_ERROR(EFAULT); - - dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - - if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { - error = -XFS_ERROR(EPERM); - goto out; - } - - if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { - error = -XFS_ERROR(EFAULT); - goto out; - } - - error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, - fsd.fsd_dmstate); - - out: - dput(dentry); - return error; -} - -STATIC int -xfs_attrlist_by_handle( - struct file *parfilp, - void __user *arg) -{ - int error = -ENOMEM; - attrlist_cursor_kern_t *cursor; - xfs_fsop_attrlist_handlereq_t al_hreq; - struct dentry *dentry; - char *kbuf; - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) - return -XFS_ERROR(EFAULT); - if (al_hreq.buflen > XATTR_LIST_MAX) - return -XFS_ERROR(EINVAL); - - /* - * Reject flags, only allow namespaces. - */ - if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) - return -XFS_ERROR(EINVAL); - - dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - - kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL); - if (!kbuf) - goto out_dput; - - cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; - error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, - al_hreq.flags, cursor); - if (error) - goto out_kfree; - - if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) - error = -EFAULT; - - out_kfree: - kfree(kbuf); - out_dput: - dput(dentry); - return error; -} - -int -xfs_attrmulti_attr_get( - struct inode *inode, - unsigned char *name, - unsigned char __user *ubuf, - __uint32_t *len, - __uint32_t flags) -{ - unsigned char *kbuf; - int error = EFAULT; - - if (*len > XATTR_SIZE_MAX) - return EINVAL; - kbuf = kmalloc(*len, GFP_KERNEL); - if (!kbuf) - return ENOMEM; - - error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); - if (error) - goto out_kfree; - - if (copy_to_user(ubuf, kbuf, *len)) - error = EFAULT; - - out_kfree: - kfree(kbuf); - return error; -} - -int -xfs_attrmulti_attr_set( - struct inode *inode, - unsigned char *name, - const unsigned char __user *ubuf, - __uint32_t len, - __uint32_t flags) -{ - unsigned char *kbuf; - int error = EFAULT; - - if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) - return EPERM; - if (len > XATTR_SIZE_MAX) - return EINVAL; - - kbuf = memdup_user(ubuf, len); - if (IS_ERR(kbuf)) - return PTR_ERR(kbuf); - - error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); - - return error; -} - -int -xfs_attrmulti_attr_remove( - struct inode *inode, - unsigned char *name, - __uint32_t flags) -{ - if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) - return EPERM; - return xfs_attr_remove(XFS_I(inode), name, flags); -} - -STATIC int -xfs_attrmulti_by_handle( - struct file *parfilp, - void __user *arg) -{ - int error; - xfs_attr_multiop_t *ops; - xfs_fsop_attrmulti_handlereq_t am_hreq; - struct dentry *dentry; - unsigned int i, size; - unsigned char *attr_name; - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) - return -XFS_ERROR(EFAULT); - - /* overflow check */ - if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) - return -E2BIG; - - dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - - error = E2BIG; - size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); - if (!size || size > 16 * PAGE_SIZE) - goto out_dput; - - ops = memdup_user(am_hreq.ops, size); - if (IS_ERR(ops)) { - error = PTR_ERR(ops); - goto out_dput; - } - - attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); - if (!attr_name) - goto out_kfree_ops; - - error = 0; - for (i = 0; i < am_hreq.opcount; i++) { - ops[i].am_error = strncpy_from_user((char *)attr_name, - ops[i].am_attrname, MAXNAMELEN); - if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) - error = -ERANGE; - if (ops[i].am_error < 0) - break; - - switch (ops[i].am_opcode) { - case ATTR_OP_GET: - ops[i].am_error = xfs_attrmulti_attr_get( - dentry->d_inode, attr_name, - ops[i].am_attrvalue, &ops[i].am_length, - ops[i].am_flags); - break; - case ATTR_OP_SET: - ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_set( - dentry->d_inode, attr_name, - ops[i].am_attrvalue, ops[i].am_length, - ops[i].am_flags); - mnt_drop_write(parfilp->f_path.mnt); - break; - case ATTR_OP_REMOVE: - ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_remove( - dentry->d_inode, attr_name, - ops[i].am_flags); - mnt_drop_write(parfilp->f_path.mnt); - break; - default: - ops[i].am_error = EINVAL; - } - } - - if (copy_to_user(am_hreq.ops, ops, size)) - error = XFS_ERROR(EFAULT); - - kfree(attr_name); - out_kfree_ops: - kfree(ops); - out_dput: - dput(dentry); - return -error; -} - -int -xfs_ioc_space( - struct xfs_inode *ip, - struct inode *inode, - struct file *filp, - int ioflags, - unsigned int cmd, - xfs_flock64_t *bf) -{ - int attr_flags = 0; - int error; - - /* - * Only allow the sys admin to reserve space unless - * unwritten extents are enabled. - */ - if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && - !capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - - if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) - return -XFS_ERROR(EPERM); - - if (!(filp->f_mode & FMODE_WRITE)) - return -XFS_ERROR(EBADF); - - if (!S_ISREG(inode->i_mode)) - return -XFS_ERROR(EINVAL); - - if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) - attr_flags |= XFS_ATTR_NONBLOCK; - - if (filp->f_flags & O_DSYNC) - attr_flags |= XFS_ATTR_SYNC; - - if (ioflags & IO_INVIS) - attr_flags |= XFS_ATTR_DMI; - - error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); - return -error; -} - -STATIC int -xfs_ioc_bulkstat( - xfs_mount_t *mp, - unsigned int cmd, - void __user *arg) -{ - xfs_fsop_bulkreq_t bulkreq; - int count; /* # of records returned */ - xfs_ino_t inlast; /* last inode number */ - int done; - int error; - - /* done = 1 if there are more stats to get and if bulkstat */ - /* should be called again (unused here, but used in dmapi) */ - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (XFS_FORCED_SHUTDOWN(mp)) - return -XFS_ERROR(EIO); - - if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) - return -XFS_ERROR(EFAULT); - - if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) - return -XFS_ERROR(EFAULT); - - if ((count = bulkreq.icount) <= 0) - return -XFS_ERROR(EINVAL); - - if (bulkreq.ubuffer == NULL) - return -XFS_ERROR(EINVAL); - - if (cmd == XFS_IOC_FSINUMBERS) - error = xfs_inumbers(mp, &inlast, &count, - bulkreq.ubuffer, xfs_inumbers_fmt); - else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) - error = xfs_bulkstat_single(mp, &inlast, - bulkreq.ubuffer, &done); - else /* XFS_IOC_FSBULKSTAT */ - error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, - sizeof(xfs_bstat_t), bulkreq.ubuffer, - &done); - - if (error) - return -error; - - if (bulkreq.ocount != NULL) { - if (copy_to_user(bulkreq.lastip, &inlast, - sizeof(xfs_ino_t))) - return -XFS_ERROR(EFAULT); - - if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) - return -XFS_ERROR(EFAULT); - } - - return 0; -} - -STATIC int -xfs_ioc_fsgeometry_v1( - xfs_mount_t *mp, - void __user *arg) -{ - xfs_fsop_geom_t fsgeo; - int error; - - error = xfs_fs_geometry(mp, &fsgeo, 3); - if (error) - return -error; - - /* - * Caller should have passed an argument of type - * xfs_fsop_geom_v1_t. This is a proper subset of the - * xfs_fsop_geom_t that xfs_fs_geometry() fills in. - */ - if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) - return -XFS_ERROR(EFAULT); - return 0; -} - -STATIC int -xfs_ioc_fsgeometry( - xfs_mount_t *mp, - void __user *arg) -{ - xfs_fsop_geom_t fsgeo; - int error; - - error = xfs_fs_geometry(mp, &fsgeo, 4); - if (error) - return -error; - - if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) - return -XFS_ERROR(EFAULT); - return 0; -} - -/* - * Linux extended inode flags interface. - */ - -STATIC unsigned int -xfs_merge_ioc_xflags( - unsigned int flags, - unsigned int start) -{ - unsigned int xflags = start; - - if (flags & FS_IMMUTABLE_FL) - xflags |= XFS_XFLAG_IMMUTABLE; - else - xflags &= ~XFS_XFLAG_IMMUTABLE; - if (flags & FS_APPEND_FL) - xflags |= XFS_XFLAG_APPEND; - else - xflags &= ~XFS_XFLAG_APPEND; - if (flags & FS_SYNC_FL) - xflags |= XFS_XFLAG_SYNC; - else - xflags &= ~XFS_XFLAG_SYNC; - if (flags & FS_NOATIME_FL) - xflags |= XFS_XFLAG_NOATIME; - else - xflags &= ~XFS_XFLAG_NOATIME; - if (flags & FS_NODUMP_FL) - xflags |= XFS_XFLAG_NODUMP; - else - xflags &= ~XFS_XFLAG_NODUMP; - - return xflags; -} - -STATIC unsigned int -xfs_di2lxflags( - __uint16_t di_flags) -{ - unsigned int flags = 0; - - if (di_flags & XFS_DIFLAG_IMMUTABLE) - flags |= FS_IMMUTABLE_FL; - if (di_flags & XFS_DIFLAG_APPEND) - flags |= FS_APPEND_FL; - if (di_flags & XFS_DIFLAG_SYNC) - flags |= FS_SYNC_FL; - if (di_flags & XFS_DIFLAG_NOATIME) - flags |= FS_NOATIME_FL; - if (di_flags & XFS_DIFLAG_NODUMP) - flags |= FS_NODUMP_FL; - return flags; -} - -STATIC int -xfs_ioc_fsgetxattr( - xfs_inode_t *ip, - int attr, - void __user *arg) -{ - struct fsxattr fa; - - memset(&fa, 0, sizeof(struct fsxattr)); - - xfs_ilock(ip, XFS_ILOCK_SHARED); - fa.fsx_xflags = xfs_ip2xflags(ip); - fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; - fa.fsx_projid = xfs_get_projid(ip); - - if (attr) { - if (ip->i_afp) { - if (ip->i_afp->if_flags & XFS_IFEXTENTS) - fa.fsx_nextents = ip->i_afp->if_bytes / - sizeof(xfs_bmbt_rec_t); - else - fa.fsx_nextents = ip->i_d.di_anextents; - } else - fa.fsx_nextents = 0; - } else { - if (ip->i_df.if_flags & XFS_IFEXTENTS) - fa.fsx_nextents = ip->i_df.if_bytes / - sizeof(xfs_bmbt_rec_t); - else - fa.fsx_nextents = ip->i_d.di_nextents; - } - xfs_iunlock(ip, XFS_ILOCK_SHARED); - - if (copy_to_user(arg, &fa, sizeof(fa))) - return -EFAULT; - return 0; -} - -STATIC void -xfs_set_diflags( - struct xfs_inode *ip, - unsigned int xflags) -{ - unsigned int di_flags; - - /* can't set PREALLOC this way, just preserve it */ - di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); - if (xflags & XFS_XFLAG_IMMUTABLE) - di_flags |= XFS_DIFLAG_IMMUTABLE; - if (xflags & XFS_XFLAG_APPEND) - di_flags |= XFS_DIFLAG_APPEND; - if (xflags & XFS_XFLAG_SYNC) - di_flags |= XFS_DIFLAG_SYNC; - if (xflags & XFS_XFLAG_NOATIME) - di_flags |= XFS_DIFLAG_NOATIME; - if (xflags & XFS_XFLAG_NODUMP) - di_flags |= XFS_DIFLAG_NODUMP; - if (xflags & XFS_XFLAG_PROJINHERIT) - di_flags |= XFS_DIFLAG_PROJINHERIT; - if (xflags & XFS_XFLAG_NODEFRAG) - di_flags |= XFS_DIFLAG_NODEFRAG; - if (xflags & XFS_XFLAG_FILESTREAM) - di_flags |= XFS_DIFLAG_FILESTREAM; - if (S_ISDIR(ip->i_d.di_mode)) { - if (xflags & XFS_XFLAG_RTINHERIT) - di_flags |= XFS_DIFLAG_RTINHERIT; - if (xflags & XFS_XFLAG_NOSYMLINKS) - di_flags |= XFS_DIFLAG_NOSYMLINKS; - if (xflags & XFS_XFLAG_EXTSZINHERIT) - di_flags |= XFS_DIFLAG_EXTSZINHERIT; - } else if (S_ISREG(ip->i_d.di_mode)) { - if (xflags & XFS_XFLAG_REALTIME) - di_flags |= XFS_DIFLAG_REALTIME; - if (xflags & XFS_XFLAG_EXTSIZE) - di_flags |= XFS_DIFLAG_EXTSIZE; - } - - ip->i_d.di_flags = di_flags; -} - -STATIC void -xfs_diflags_to_linux( - struct xfs_inode *ip) -{ - struct inode *inode = VFS_I(ip); - unsigned int xflags = xfs_ip2xflags(ip); - - if (xflags & XFS_XFLAG_IMMUTABLE) - inode->i_flags |= S_IMMUTABLE; - else - inode->i_flags &= ~S_IMMUTABLE; - if (xflags & XFS_XFLAG_APPEND) - inode->i_flags |= S_APPEND; - else - inode->i_flags &= ~S_APPEND; - if (xflags & XFS_XFLAG_SYNC) - inode->i_flags |= S_SYNC; - else - inode->i_flags &= ~S_SYNC; - if (xflags & XFS_XFLAG_NOATIME) - inode->i_flags |= S_NOATIME; - else - inode->i_flags &= ~S_NOATIME; -} - -#define FSX_PROJID 1 -#define FSX_EXTSIZE 2 -#define FSX_XFLAGS 4 -#define FSX_NONBLOCK 8 - -STATIC int -xfs_ioctl_setattr( - xfs_inode_t *ip, - struct fsxattr *fa, - int mask) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_trans *tp; - unsigned int lock_flags = 0; - struct xfs_dquot *udqp = NULL; - struct xfs_dquot *gdqp = NULL; - struct xfs_dquot *olddquot = NULL; - int code; - - trace_xfs_ioctl_setattr(ip); - - if (mp->m_flags & XFS_MOUNT_RDONLY) - return XFS_ERROR(EROFS); - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - /* - * Disallow 32bit project ids when projid32bit feature is not enabled. - */ - if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && - !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) - return XFS_ERROR(EINVAL); - - /* - * If disk quotas is on, we make sure that the dquots do exist on disk, - * before we start any other transactions. Trying to do this later - * is messy. We don't care to take a readlock to look at the ids - * in inode here, because we can't hold it across the trans_reserve. - * If the IDs do change before we take the ilock, we're covered - * because the i_*dquot fields will get updated anyway. - */ - if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { - code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, - ip->i_d.di_gid, fa->fsx_projid, - XFS_QMOPT_PQUOTA, &udqp, &gdqp); - if (code) - return code; - } - - /* - * For the other attributes, we acquire the inode lock and - * first do an error checking pass. - */ - tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); - code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); - if (code) - goto error_return; - - lock_flags = XFS_ILOCK_EXCL; - xfs_ilock(ip, lock_flags); - - /* - * CAP_FOWNER overrides the following restrictions: - * - * The user ID of the calling process must be equal - * to the file owner ID, except in cases where the - * CAP_FSETID capability is applicable. - */ - if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { - code = XFS_ERROR(EPERM); - goto error_return; - } - - /* - * Do a quota reservation only if projid is actually going to change. - */ - if (mask & FSX_PROJID) { - if (XFS_IS_QUOTA_RUNNING(mp) && - XFS_IS_PQUOTA_ON(mp) && - xfs_get_projid(ip) != fa->fsx_projid) { - ASSERT(tp); - code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, - capable(CAP_FOWNER) ? - XFS_QMOPT_FORCE_RES : 0); - if (code) /* out of quota */ - goto error_return; - } - } - - if (mask & FSX_EXTSIZE) { - /* - * Can't change extent size if any extents are allocated. - */ - if (ip->i_d.di_nextents && - ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != - fa->fsx_extsize)) { - code = XFS_ERROR(EINVAL); /* EFBIG? */ - goto error_return; - } - - /* - * Extent size must be a multiple of the appropriate block - * size, if set at all. It must also be smaller than the - * maximum extent size supported by the filesystem. - * - * Also, for non-realtime files, limit the extent size hint to - * half the size of the AGs in the filesystem so alignment - * doesn't result in extents larger than an AG. - */ - if (fa->fsx_extsize != 0) { - xfs_extlen_t size; - xfs_fsblock_t extsize_fsb; - - extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); - if (extsize_fsb > MAXEXTLEN) { - code = XFS_ERROR(EINVAL); - goto error_return; - } - - if (XFS_IS_REALTIME_INODE(ip) || - ((mask & FSX_XFLAGS) && - (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { - size = mp->m_sb.sb_rextsize << - mp->m_sb.sb_blocklog; - } else { - size = mp->m_sb.sb_blocksize; - if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { - code = XFS_ERROR(EINVAL); - goto error_return; - } - } - - if (fa->fsx_extsize % size) { - code = XFS_ERROR(EINVAL); - goto error_return; - } - } - } - - - if (mask & FSX_XFLAGS) { - /* - * Can't change realtime flag if any extents are allocated. - */ - if ((ip->i_d.di_nextents || ip->i_delayed_blks) && - (XFS_IS_REALTIME_INODE(ip)) != - (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { - code = XFS_ERROR(EINVAL); /* EFBIG? */ - goto error_return; - } - - /* - * If realtime flag is set then must have realtime data. - */ - if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { - if ((mp->m_sb.sb_rblocks == 0) || - (mp->m_sb.sb_rextsize == 0) || - (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { - code = XFS_ERROR(EINVAL); - goto error_return; - } - } - - /* - * Can't modify an immutable/append-only file unless - * we have appropriate permission. - */ - if ((ip->i_d.di_flags & - (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || - (fa->fsx_xflags & - (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && - !capable(CAP_LINUX_IMMUTABLE)) { - code = XFS_ERROR(EPERM); - goto error_return; - } - } - - xfs_trans_ijoin(tp, ip); - - /* - * Change file ownership. Must be the owner or privileged. - */ - if (mask & FSX_PROJID) { - /* - * CAP_FSETID overrides the following restrictions: - * - * The set-user-ID and set-group-ID bits of a file will be - * cleared upon successful return from chown() - */ - if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && - !capable(CAP_FSETID)) - ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); - - /* - * Change the ownerships and register quota modifications - * in the transaction. - */ - if (xfs_get_projid(ip) != fa->fsx_projid) { - if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { - olddquot = xfs_qm_vop_chown(tp, ip, - &ip->i_gdquot, gdqp); - } - xfs_set_projid(ip, fa->fsx_projid); - - /* - * We may have to rev the inode as well as - * the superblock version number since projids didn't - * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. - */ - if (ip->i_d.di_version == 1) - xfs_bump_ino_vers2(tp, ip); - } - - } - - if (mask & FSX_EXTSIZE) - ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; - if (mask & FSX_XFLAGS) { - xfs_set_diflags(ip, fa->fsx_xflags); - xfs_diflags_to_linux(ip); - } - - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - - XFS_STATS_INC(xs_ig_attrchg); - - /* - * If this is a synchronous mount, make sure that the - * transaction goes to disk before returning to the user. - * This is slightly sub-optimal in that truncates require - * two sync transactions instead of one for wsync filesystems. - * One for the truncate and one for the timestamps since we - * don't want to change the timestamps unless we're sure the - * truncate worked. Truncates are less than 1% of the laddis - * mix so this probably isn't worth the trouble to optimize. - */ - if (mp->m_flags & XFS_MOUNT_WSYNC) - xfs_trans_set_sync(tp); - code = xfs_trans_commit(tp, 0); - xfs_iunlock(ip, lock_flags); - - /* - * Release any dquot(s) the inode had kept before chown. - */ - xfs_qm_dqrele(olddquot); - xfs_qm_dqrele(udqp); - xfs_qm_dqrele(gdqp); - - return code; - - error_return: - xfs_qm_dqrele(udqp); - xfs_qm_dqrele(gdqp); - xfs_trans_cancel(tp, 0); - if (lock_flags) - xfs_iunlock(ip, lock_flags); - return code; -} - -STATIC int -xfs_ioc_fssetxattr( - xfs_inode_t *ip, - struct file *filp, - void __user *arg) -{ - struct fsxattr fa; - unsigned int mask; - - if (copy_from_user(&fa, arg, sizeof(fa))) - return -EFAULT; - - mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; - if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) - mask |= FSX_NONBLOCK; - - return -xfs_ioctl_setattr(ip, &fa, mask); -} - -STATIC int -xfs_ioc_getxflags( - xfs_inode_t *ip, - void __user *arg) -{ - unsigned int flags; - - flags = xfs_di2lxflags(ip->i_d.di_flags); - if (copy_to_user(arg, &flags, sizeof(flags))) - return -EFAULT; - return 0; -} - -STATIC int -xfs_ioc_setxflags( - xfs_inode_t *ip, - struct file *filp, - void __user *arg) -{ - struct fsxattr fa; - unsigned int flags; - unsigned int mask; - - if (copy_from_user(&flags, arg, sizeof(flags))) - return -EFAULT; - - if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ - FS_NOATIME_FL | FS_NODUMP_FL | \ - FS_SYNC_FL)) - return -EOPNOTSUPP; - - mask = FSX_XFLAGS; - if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) - mask |= FSX_NONBLOCK; - fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); - - return -xfs_ioctl_setattr(ip, &fa, mask); -} - -STATIC int -xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) -{ - struct getbmap __user *base = *ap; - - /* copy only getbmap portion (not getbmapx) */ - if (copy_to_user(base, bmv, sizeof(struct getbmap))) - return XFS_ERROR(EFAULT); - - *ap += sizeof(struct getbmap); - return 0; -} - -STATIC int -xfs_ioc_getbmap( - struct xfs_inode *ip, - int ioflags, - unsigned int cmd, - void __user *arg) -{ - struct getbmapx bmx; - int error; - - if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) - return -XFS_ERROR(EFAULT); - - if (bmx.bmv_count < 2) - return -XFS_ERROR(EINVAL); - - bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); - if (ioflags & IO_INVIS) - bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; - - error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, - (struct getbmap *)arg+1); - if (error) - return -error; - - /* copy back header - only size of getbmap */ - if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) - return -XFS_ERROR(EFAULT); - return 0; -} - -STATIC int -xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) -{ - struct getbmapx __user *base = *ap; - - if (copy_to_user(base, bmv, sizeof(struct getbmapx))) - return XFS_ERROR(EFAULT); - - *ap += sizeof(struct getbmapx); - return 0; -} - -STATIC int -xfs_ioc_getbmapx( - struct xfs_inode *ip, - void __user *arg) -{ - struct getbmapx bmx; - int error; - - if (copy_from_user(&bmx, arg, sizeof(bmx))) - return -XFS_ERROR(EFAULT); - - if (bmx.bmv_count < 2) - return -XFS_ERROR(EINVAL); - - if (bmx.bmv_iflags & (~BMV_IF_VALID)) - return -XFS_ERROR(EINVAL); - - error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, - (struct getbmapx *)arg+1); - if (error) - return -error; - - /* copy back header */ - if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) - return -XFS_ERROR(EFAULT); - - return 0; -} - -/* - * Note: some of the ioctl's return positive numbers as a - * byte count indicating success, such as readlink_by_handle. - * So we don't "sign flip" like most other routines. This means - * true errors need to be returned as a negative value. - */ -long -xfs_file_ioctl( - struct file *filp, - unsigned int cmd, - unsigned long p) -{ - struct inode *inode = filp->f_path.dentry->d_inode; - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - void __user *arg = (void __user *)p; - int ioflags = 0; - int error; - - if (filp->f_mode & FMODE_NOCMTIME) - ioflags |= IO_INVIS; - - trace_xfs_file_ioctl(ip); - - switch (cmd) { - case FITRIM: - return xfs_ioc_trim(mp, arg); - case XFS_IOC_ALLOCSP: - case XFS_IOC_FREESP: - case XFS_IOC_RESVSP: - case XFS_IOC_UNRESVSP: - case XFS_IOC_ALLOCSP64: - case XFS_IOC_FREESP64: - case XFS_IOC_RESVSP64: - case XFS_IOC_UNRESVSP64: - case XFS_IOC_ZERO_RANGE: { - xfs_flock64_t bf; - - if (copy_from_user(&bf, arg, sizeof(bf))) - return -XFS_ERROR(EFAULT); - return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); - } - case XFS_IOC_DIOINFO: { - struct dioattr da; - xfs_buftarg_t *target = - XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp; - - da.d_mem = da.d_miniosz = 1 << target->bt_sshift; - da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); - - if (copy_to_user(arg, &da, sizeof(da))) - return -XFS_ERROR(EFAULT); - return 0; - } - - case XFS_IOC_FSBULKSTAT_SINGLE: - case XFS_IOC_FSBULKSTAT: - case XFS_IOC_FSINUMBERS: - return xfs_ioc_bulkstat(mp, cmd, arg); - - case XFS_IOC_FSGEOMETRY_V1: - return xfs_ioc_fsgeometry_v1(mp, arg); - - case XFS_IOC_FSGEOMETRY: - return xfs_ioc_fsgeometry(mp, arg); - - case XFS_IOC_GETVERSION: - return put_user(inode->i_generation, (int __user *)arg); - - case XFS_IOC_FSGETXATTR: - return xfs_ioc_fsgetxattr(ip, 0, arg); - case XFS_IOC_FSGETXATTRA: - return xfs_ioc_fsgetxattr(ip, 1, arg); - case XFS_IOC_FSSETXATTR: - return xfs_ioc_fssetxattr(ip, filp, arg); - case XFS_IOC_GETXFLAGS: - return xfs_ioc_getxflags(ip, arg); - case XFS_IOC_SETXFLAGS: - return xfs_ioc_setxflags(ip, filp, arg); - - case XFS_IOC_FSSETDM: { - struct fsdmidata dmi; - - if (copy_from_user(&dmi, arg, sizeof(dmi))) - return -XFS_ERROR(EFAULT); - - error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, - dmi.fsd_dmstate); - return -error; - } - - case XFS_IOC_GETBMAP: - case XFS_IOC_GETBMAPA: - return xfs_ioc_getbmap(ip, ioflags, cmd, arg); - - case XFS_IOC_GETBMAPX: - return xfs_ioc_getbmapx(ip, arg); - - case XFS_IOC_FD_TO_HANDLE: - case XFS_IOC_PATH_TO_HANDLE: - case XFS_IOC_PATH_TO_FSHANDLE: { - xfs_fsop_handlereq_t hreq; - - if (copy_from_user(&hreq, arg, sizeof(hreq))) - return -XFS_ERROR(EFAULT); - return xfs_find_handle(cmd, &hreq); - } - case XFS_IOC_OPEN_BY_HANDLE: { - xfs_fsop_handlereq_t hreq; - - if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) - return -XFS_ERROR(EFAULT); - return xfs_open_by_handle(filp, &hreq); - } - case XFS_IOC_FSSETDM_BY_HANDLE: - return xfs_fssetdm_by_handle(filp, arg); - - case XFS_IOC_READLINK_BY_HANDLE: { - xfs_fsop_handlereq_t hreq; - - if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) - return -XFS_ERROR(EFAULT); - return xfs_readlink_by_handle(filp, &hreq); - } - case XFS_IOC_ATTRLIST_BY_HANDLE: - return xfs_attrlist_by_handle(filp, arg); - - case XFS_IOC_ATTRMULTI_BY_HANDLE: - return xfs_attrmulti_by_handle(filp, arg); - - case XFS_IOC_SWAPEXT: { - struct xfs_swapext sxp; - - if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) - return -XFS_ERROR(EFAULT); - error = xfs_swapext(&sxp); - return -error; - } - - case XFS_IOC_FSCOUNTS: { - xfs_fsop_counts_t out; - - error = xfs_fs_counts(mp, &out); - if (error) - return -error; - - if (copy_to_user(arg, &out, sizeof(out))) - return -XFS_ERROR(EFAULT); - return 0; - } - - case XFS_IOC_SET_RESBLKS: { - xfs_fsop_resblks_t inout; - __uint64_t in; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (mp->m_flags & XFS_MOUNT_RDONLY) - return -XFS_ERROR(EROFS); - - if (copy_from_user(&inout, arg, sizeof(inout))) - return -XFS_ERROR(EFAULT); - - /* input parameter is passed in resblks field of structure */ - in = inout.resblks; - error = xfs_reserve_blocks(mp, &in, &inout); - if (error) - return -error; - - if (copy_to_user(arg, &inout, sizeof(inout))) - return -XFS_ERROR(EFAULT); - return 0; - } - - case XFS_IOC_GET_RESBLKS: { - xfs_fsop_resblks_t out; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - error = xfs_reserve_blocks(mp, NULL, &out); - if (error) - return -error; - - if (copy_to_user(arg, &out, sizeof(out))) - return -XFS_ERROR(EFAULT); - - return 0; - } - - case XFS_IOC_FSGROWFSDATA: { - xfs_growfs_data_t in; - - if (copy_from_user(&in, arg, sizeof(in))) - return -XFS_ERROR(EFAULT); - - error = xfs_growfs_data(mp, &in); - return -error; - } - - case XFS_IOC_FSGROWFSLOG: { - xfs_growfs_log_t in; - - if (copy_from_user(&in, arg, sizeof(in))) - return -XFS_ERROR(EFAULT); - - error = xfs_growfs_log(mp, &in); - return -error; - } - - case XFS_IOC_FSGROWFSRT: { - xfs_growfs_rt_t in; - - if (copy_from_user(&in, arg, sizeof(in))) - return -XFS_ERROR(EFAULT); - - error = xfs_growfs_rt(mp, &in); - return -error; - } - - case XFS_IOC_GOINGDOWN: { - __uint32_t in; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (get_user(in, (__uint32_t __user *)arg)) - return -XFS_ERROR(EFAULT); - - error = xfs_fs_goingdown(mp, in); - return -error; - } - - case XFS_IOC_ERROR_INJECTION: { - xfs_error_injection_t in; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (copy_from_user(&in, arg, sizeof(in))) - return -XFS_ERROR(EFAULT); - - error = xfs_errortag_add(in.errtag, mp); - return -error; - } - - case XFS_IOC_ERROR_CLEARALL: - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - error = xfs_errortag_clearall(mp, 1); - return -error; - - default: - return -ENOTTY; - } -} diff --git a/fs/xfs/linux-2.6/xfs_ioctl.h b/fs/xfs/linux-2.6/xfs_ioctl.h deleted file mode 100644 index d56173b34a2a..000000000000 --- a/fs/xfs/linux-2.6/xfs_ioctl.h +++ /dev/null @@ -1,85 +0,0 @@ -/* - * Copyright (c) 2008 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_IOCTL_H__ -#define __XFS_IOCTL_H__ - -extern int -xfs_ioc_space( - struct xfs_inode *ip, - struct inode *inode, - struct file *filp, - int ioflags, - unsigned int cmd, - xfs_flock64_t *bf); - -extern int -xfs_find_handle( - unsigned int cmd, - xfs_fsop_handlereq_t *hreq); - -extern int -xfs_open_by_handle( - struct file *parfilp, - xfs_fsop_handlereq_t *hreq); - -extern int -xfs_readlink_by_handle( - struct file *parfilp, - xfs_fsop_handlereq_t *hreq); - -extern int -xfs_attrmulti_attr_get( - struct inode *inode, - unsigned char *name, - unsigned char __user *ubuf, - __uint32_t *len, - __uint32_t flags); - -extern int -xfs_attrmulti_attr_set( - struct inode *inode, - unsigned char *name, - const unsigned char __user *ubuf, - __uint32_t len, - __uint32_t flags); - -extern int -xfs_attrmulti_attr_remove( - struct inode *inode, - unsigned char *name, - __uint32_t flags); - -extern struct dentry * -xfs_handle_to_dentry( - struct file *parfilp, - void __user *uhandle, - u32 hlen); - -extern long -xfs_file_ioctl( - struct file *filp, - unsigned int cmd, - unsigned long p); - -extern long -xfs_file_compat_ioctl( - struct file *file, - unsigned int cmd, - unsigned long arg); - -#endif diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c deleted file mode 100644 index 54e623bfbb85..000000000000 --- a/fs/xfs/linux-2.6/xfs_ioctl32.c +++ /dev/null @@ -1,672 +0,0 @@ -/* - * Copyright (c) 2004-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include -#include -#include -#include -#include -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_vnode.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_error.h" -#include "xfs_dfrag.h" -#include "xfs_vnodeops.h" -#include "xfs_fsops.h" -#include "xfs_alloc.h" -#include "xfs_rtalloc.h" -#include "xfs_attr.h" -#include "xfs_ioctl.h" -#include "xfs_ioctl32.h" -#include "xfs_trace.h" - -#define _NATIVE_IOC(cmd, type) \ - _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) - -#ifdef BROKEN_X86_ALIGNMENT -STATIC int -xfs_compat_flock64_copyin( - xfs_flock64_t *bf, - compat_xfs_flock64_t __user *arg32) -{ - if (get_user(bf->l_type, &arg32->l_type) || - get_user(bf->l_whence, &arg32->l_whence) || - get_user(bf->l_start, &arg32->l_start) || - get_user(bf->l_len, &arg32->l_len) || - get_user(bf->l_sysid, &arg32->l_sysid) || - get_user(bf->l_pid, &arg32->l_pid) || - copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32))) - return -XFS_ERROR(EFAULT); - return 0; -} - -STATIC int -xfs_compat_ioc_fsgeometry_v1( - struct xfs_mount *mp, - compat_xfs_fsop_geom_v1_t __user *arg32) -{ - xfs_fsop_geom_t fsgeo; - int error; - - error = xfs_fs_geometry(mp, &fsgeo, 3); - if (error) - return -error; - /* The 32-bit variant simply has some padding at the end */ - if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1))) - return -XFS_ERROR(EFAULT); - return 0; -} - -STATIC int -xfs_compat_growfs_data_copyin( - struct xfs_growfs_data *in, - compat_xfs_growfs_data_t __user *arg32) -{ - if (get_user(in->newblocks, &arg32->newblocks) || - get_user(in->imaxpct, &arg32->imaxpct)) - return -XFS_ERROR(EFAULT); - return 0; -} - -STATIC int -xfs_compat_growfs_rt_copyin( - struct xfs_growfs_rt *in, - compat_xfs_growfs_rt_t __user *arg32) -{ - if (get_user(in->newblocks, &arg32->newblocks) || - get_user(in->extsize, &arg32->extsize)) - return -XFS_ERROR(EFAULT); - return 0; -} - -STATIC int -xfs_inumbers_fmt_compat( - void __user *ubuffer, - const xfs_inogrp_t *buffer, - long count, - long *written) -{ - compat_xfs_inogrp_t __user *p32 = ubuffer; - long i; - - for (i = 0; i < count; i++) { - if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) || - put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) || - put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask)) - return -XFS_ERROR(EFAULT); - } - *written = count * sizeof(*p32); - return 0; -} - -#else -#define xfs_inumbers_fmt_compat xfs_inumbers_fmt -#endif /* BROKEN_X86_ALIGNMENT */ - -STATIC int -xfs_ioctl32_bstime_copyin( - xfs_bstime_t *bstime, - compat_xfs_bstime_t __user *bstime32) -{ - compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */ - - if (get_user(sec32, &bstime32->tv_sec) || - get_user(bstime->tv_nsec, &bstime32->tv_nsec)) - return -XFS_ERROR(EFAULT); - bstime->tv_sec = sec32; - return 0; -} - -/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */ -STATIC int -xfs_ioctl32_bstat_copyin( - xfs_bstat_t *bstat, - compat_xfs_bstat_t __user *bstat32) -{ - if (get_user(bstat->bs_ino, &bstat32->bs_ino) || - get_user(bstat->bs_mode, &bstat32->bs_mode) || - get_user(bstat->bs_nlink, &bstat32->bs_nlink) || - get_user(bstat->bs_uid, &bstat32->bs_uid) || - get_user(bstat->bs_gid, &bstat32->bs_gid) || - get_user(bstat->bs_rdev, &bstat32->bs_rdev) || - get_user(bstat->bs_blksize, &bstat32->bs_blksize) || - get_user(bstat->bs_size, &bstat32->bs_size) || - xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) || - xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) || - xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) || - get_user(bstat->bs_blocks, &bstat32->bs_size) || - get_user(bstat->bs_xflags, &bstat32->bs_size) || - get_user(bstat->bs_extsize, &bstat32->bs_extsize) || - get_user(bstat->bs_extents, &bstat32->bs_extents) || - get_user(bstat->bs_gen, &bstat32->bs_gen) || - get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) || - get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || - get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || - get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || - get_user(bstat->bs_aextents, &bstat32->bs_aextents)) - return -XFS_ERROR(EFAULT); - return 0; -} - -/* XFS_IOC_FSBULKSTAT and friends */ - -STATIC int -xfs_bstime_store_compat( - compat_xfs_bstime_t __user *p32, - const xfs_bstime_t *p) -{ - __s32 sec32; - - sec32 = p->tv_sec; - if (put_user(sec32, &p32->tv_sec) || - put_user(p->tv_nsec, &p32->tv_nsec)) - return -XFS_ERROR(EFAULT); - return 0; -} - -/* Return 0 on success or positive error (to xfs_bulkstat()) */ -STATIC int -xfs_bulkstat_one_fmt_compat( - void __user *ubuffer, - int ubsize, - int *ubused, - const xfs_bstat_t *buffer) -{ - compat_xfs_bstat_t __user *p32 = ubuffer; - - if (ubsize < sizeof(*p32)) - return XFS_ERROR(ENOMEM); - - if (put_user(buffer->bs_ino, &p32->bs_ino) || - put_user(buffer->bs_mode, &p32->bs_mode) || - put_user(buffer->bs_nlink, &p32->bs_nlink) || - put_user(buffer->bs_uid, &p32->bs_uid) || - put_user(buffer->bs_gid, &p32->bs_gid) || - put_user(buffer->bs_rdev, &p32->bs_rdev) || - put_user(buffer->bs_blksize, &p32->bs_blksize) || - put_user(buffer->bs_size, &p32->bs_size) || - xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) || - xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) || - xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) || - put_user(buffer->bs_blocks, &p32->bs_blocks) || - put_user(buffer->bs_xflags, &p32->bs_xflags) || - put_user(buffer->bs_extsize, &p32->bs_extsize) || - put_user(buffer->bs_extents, &p32->bs_extents) || - put_user(buffer->bs_gen, &p32->bs_gen) || - put_user(buffer->bs_projid, &p32->bs_projid) || - put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) || - put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) || - put_user(buffer->bs_dmstate, &p32->bs_dmstate) || - put_user(buffer->bs_aextents, &p32->bs_aextents)) - return XFS_ERROR(EFAULT); - if (ubused) - *ubused = sizeof(*p32); - return 0; -} - -STATIC int -xfs_bulkstat_one_compat( - xfs_mount_t *mp, /* mount point for filesystem */ - xfs_ino_t ino, /* inode number to get data for */ - void __user *buffer, /* buffer to place output in */ - int ubsize, /* size of buffer */ - int *ubused, /* bytes used by me */ - int *stat) /* BULKSTAT_RV_... */ -{ - return xfs_bulkstat_one_int(mp, ino, buffer, ubsize, - xfs_bulkstat_one_fmt_compat, - ubused, stat); -} - -/* copied from xfs_ioctl.c */ -STATIC int -xfs_compat_ioc_bulkstat( - xfs_mount_t *mp, - unsigned int cmd, - compat_xfs_fsop_bulkreq_t __user *p32) -{ - u32 addr; - xfs_fsop_bulkreq_t bulkreq; - int count; /* # of records returned */ - xfs_ino_t inlast; /* last inode number */ - int done; - int error; - - /* done = 1 if there are more stats to get and if bulkstat */ - /* should be called again (unused here, but used in dmapi) */ - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - - if (XFS_FORCED_SHUTDOWN(mp)) - return -XFS_ERROR(EIO); - - if (get_user(addr, &p32->lastip)) - return -XFS_ERROR(EFAULT); - bulkreq.lastip = compat_ptr(addr); - if (get_user(bulkreq.icount, &p32->icount) || - get_user(addr, &p32->ubuffer)) - return -XFS_ERROR(EFAULT); - bulkreq.ubuffer = compat_ptr(addr); - if (get_user(addr, &p32->ocount)) - return -XFS_ERROR(EFAULT); - bulkreq.ocount = compat_ptr(addr); - - if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) - return -XFS_ERROR(EFAULT); - - if ((count = bulkreq.icount) <= 0) - return -XFS_ERROR(EINVAL); - - if (bulkreq.ubuffer == NULL) - return -XFS_ERROR(EINVAL); - - if (cmd == XFS_IOC_FSINUMBERS_32) { - error = xfs_inumbers(mp, &inlast, &count, - bulkreq.ubuffer, xfs_inumbers_fmt_compat); - } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) { - int res; - - error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer, - sizeof(compat_xfs_bstat_t), 0, &res); - } else if (cmd == XFS_IOC_FSBULKSTAT_32) { - error = xfs_bulkstat(mp, &inlast, &count, - xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t), - bulkreq.ubuffer, &done); - } else - error = XFS_ERROR(EINVAL); - if (error) - return -error; - - if (bulkreq.ocount != NULL) { - if (copy_to_user(bulkreq.lastip, &inlast, - sizeof(xfs_ino_t))) - return -XFS_ERROR(EFAULT); - - if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) - return -XFS_ERROR(EFAULT); - } - - return 0; -} - -STATIC int -xfs_compat_handlereq_copyin( - xfs_fsop_handlereq_t *hreq, - compat_xfs_fsop_handlereq_t __user *arg32) -{ - compat_xfs_fsop_handlereq_t hreq32; - - if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t))) - return -XFS_ERROR(EFAULT); - - hreq->fd = hreq32.fd; - hreq->path = compat_ptr(hreq32.path); - hreq->oflags = hreq32.oflags; - hreq->ihandle = compat_ptr(hreq32.ihandle); - hreq->ihandlen = hreq32.ihandlen; - hreq->ohandle = compat_ptr(hreq32.ohandle); - hreq->ohandlen = compat_ptr(hreq32.ohandlen); - - return 0; -} - -STATIC struct dentry * -xfs_compat_handlereq_to_dentry( - struct file *parfilp, - compat_xfs_fsop_handlereq_t *hreq) -{ - return xfs_handle_to_dentry(parfilp, - compat_ptr(hreq->ihandle), hreq->ihandlen); -} - -STATIC int -xfs_compat_attrlist_by_handle( - struct file *parfilp, - void __user *arg) -{ - int error; - attrlist_cursor_kern_t *cursor; - compat_xfs_fsop_attrlist_handlereq_t al_hreq; - struct dentry *dentry; - char *kbuf; - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - if (copy_from_user(&al_hreq, arg, - sizeof(compat_xfs_fsop_attrlist_handlereq_t))) - return -XFS_ERROR(EFAULT); - if (al_hreq.buflen > XATTR_LIST_MAX) - return -XFS_ERROR(EINVAL); - - /* - * Reject flags, only allow namespaces. - */ - if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) - return -XFS_ERROR(EINVAL); - - dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - - error = -ENOMEM; - kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); - if (!kbuf) - goto out_dput; - - cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; - error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, - al_hreq.flags, cursor); - if (error) - goto out_kfree; - - if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen)) - error = -EFAULT; - - out_kfree: - kfree(kbuf); - out_dput: - dput(dentry); - return error; -} - -STATIC int -xfs_compat_attrmulti_by_handle( - struct file *parfilp, - void __user *arg) -{ - int error; - compat_xfs_attr_multiop_t *ops; - compat_xfs_fsop_attrmulti_handlereq_t am_hreq; - struct dentry *dentry; - unsigned int i, size; - unsigned char *attr_name; - - if (!capable(CAP_SYS_ADMIN)) - return -XFS_ERROR(EPERM); - if (copy_from_user(&am_hreq, arg, - sizeof(compat_xfs_fsop_attrmulti_handlereq_t))) - return -XFS_ERROR(EFAULT); - - /* overflow check */ - if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t)) - return -E2BIG; - - dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - - error = E2BIG; - size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t); - if (!size || size > 16 * PAGE_SIZE) - goto out_dput; - - ops = memdup_user(compat_ptr(am_hreq.ops), size); - if (IS_ERR(ops)) { - error = PTR_ERR(ops); - goto out_dput; - } - - attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); - if (!attr_name) - goto out_kfree_ops; - - error = 0; - for (i = 0; i < am_hreq.opcount; i++) { - ops[i].am_error = strncpy_from_user((char *)attr_name, - compat_ptr(ops[i].am_attrname), - MAXNAMELEN); - if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) - error = -ERANGE; - if (ops[i].am_error < 0) - break; - - switch (ops[i].am_opcode) { - case ATTR_OP_GET: - ops[i].am_error = xfs_attrmulti_attr_get( - dentry->d_inode, attr_name, - compat_ptr(ops[i].am_attrvalue), - &ops[i].am_length, ops[i].am_flags); - break; - case ATTR_OP_SET: - ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_set( - dentry->d_inode, attr_name, - compat_ptr(ops[i].am_attrvalue), - ops[i].am_length, ops[i].am_flags); - mnt_drop_write(parfilp->f_path.mnt); - break; - case ATTR_OP_REMOVE: - ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_remove( - dentry->d_inode, attr_name, - ops[i].am_flags); - mnt_drop_write(parfilp->f_path.mnt); - break; - default: - ops[i].am_error = EINVAL; - } - } - - if (copy_to_user(compat_ptr(am_hreq.ops), ops, size)) - error = XFS_ERROR(EFAULT); - - kfree(attr_name); - out_kfree_ops: - kfree(ops); - out_dput: - dput(dentry); - return -error; -} - -STATIC int -xfs_compat_fssetdm_by_handle( - struct file *parfilp, - void __user *arg) -{ - int error; - struct fsdmidata fsd; - compat_xfs_fsop_setdm_handlereq_t dmhreq; - struct dentry *dentry; - - if (!capable(CAP_MKNOD)) - return -XFS_ERROR(EPERM); - if (copy_from_user(&dmhreq, arg, - sizeof(compat_xfs_fsop_setdm_handlereq_t))) - return -XFS_ERROR(EFAULT); - - dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - - if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { - error = -XFS_ERROR(EPERM); - goto out; - } - - if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) { - error = -XFS_ERROR(EFAULT); - goto out; - } - - error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, - fsd.fsd_dmstate); - -out: - dput(dentry); - return error; -} - -long -xfs_file_compat_ioctl( - struct file *filp, - unsigned cmd, - unsigned long p) -{ - struct inode *inode = filp->f_path.dentry->d_inode; - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - void __user *arg = (void __user *)p; - int ioflags = 0; - int error; - - if (filp->f_mode & FMODE_NOCMTIME) - ioflags |= IO_INVIS; - - trace_xfs_file_compat_ioctl(ip); - - switch (cmd) { - /* No size or alignment issues on any arch */ - case XFS_IOC_DIOINFO: - case XFS_IOC_FSGEOMETRY: - case XFS_IOC_FSGETXATTR: - case XFS_IOC_FSSETXATTR: - case XFS_IOC_FSGETXATTRA: - case XFS_IOC_FSSETDM: - case XFS_IOC_GETBMAP: - case XFS_IOC_GETBMAPA: - case XFS_IOC_GETBMAPX: - case XFS_IOC_FSCOUNTS: - case XFS_IOC_SET_RESBLKS: - case XFS_IOC_GET_RESBLKS: - case XFS_IOC_FSGROWFSLOG: - case XFS_IOC_GOINGDOWN: - case XFS_IOC_ERROR_INJECTION: - case XFS_IOC_ERROR_CLEARALL: - return xfs_file_ioctl(filp, cmd, p); -#ifndef BROKEN_X86_ALIGNMENT - /* These are handled fine if no alignment issues */ - case XFS_IOC_ALLOCSP: - case XFS_IOC_FREESP: - case XFS_IOC_RESVSP: - case XFS_IOC_UNRESVSP: - case XFS_IOC_ALLOCSP64: - case XFS_IOC_FREESP64: - case XFS_IOC_RESVSP64: - case XFS_IOC_UNRESVSP64: - case XFS_IOC_FSGEOMETRY_V1: - case XFS_IOC_FSGROWFSDATA: - case XFS_IOC_FSGROWFSRT: - case XFS_IOC_ZERO_RANGE: - return xfs_file_ioctl(filp, cmd, p); -#else - case XFS_IOC_ALLOCSP_32: - case XFS_IOC_FREESP_32: - case XFS_IOC_ALLOCSP64_32: - case XFS_IOC_FREESP64_32: - case XFS_IOC_RESVSP_32: - case XFS_IOC_UNRESVSP_32: - case XFS_IOC_RESVSP64_32: - case XFS_IOC_UNRESVSP64_32: - case XFS_IOC_ZERO_RANGE_32: { - struct xfs_flock64 bf; - - if (xfs_compat_flock64_copyin(&bf, arg)) - return -XFS_ERROR(EFAULT); - cmd = _NATIVE_IOC(cmd, struct xfs_flock64); - return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); - } - case XFS_IOC_FSGEOMETRY_V1_32: - return xfs_compat_ioc_fsgeometry_v1(mp, arg); - case XFS_IOC_FSGROWFSDATA_32: { - struct xfs_growfs_data in; - - if (xfs_compat_growfs_data_copyin(&in, arg)) - return -XFS_ERROR(EFAULT); - error = xfs_growfs_data(mp, &in); - return -error; - } - case XFS_IOC_FSGROWFSRT_32: { - struct xfs_growfs_rt in; - - if (xfs_compat_growfs_rt_copyin(&in, arg)) - return -XFS_ERROR(EFAULT); - error = xfs_growfs_rt(mp, &in); - return -error; - } -#endif - /* long changes size, but xfs only copiese out 32 bits */ - case XFS_IOC_GETXFLAGS_32: - case XFS_IOC_SETXFLAGS_32: - case XFS_IOC_GETVERSION_32: - cmd = _NATIVE_IOC(cmd, long); - return xfs_file_ioctl(filp, cmd, p); - case XFS_IOC_SWAPEXT_32: { - struct xfs_swapext sxp; - struct compat_xfs_swapext __user *sxu = arg; - - /* Bulk copy in up to the sx_stat field, then copy bstat */ - if (copy_from_user(&sxp, sxu, - offsetof(struct xfs_swapext, sx_stat)) || - xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) - return -XFS_ERROR(EFAULT); - error = xfs_swapext(&sxp); - return -error; - } - case XFS_IOC_FSBULKSTAT_32: - case XFS_IOC_FSBULKSTAT_SINGLE_32: - case XFS_IOC_FSINUMBERS_32: - return xfs_compat_ioc_bulkstat(mp, cmd, arg); - case XFS_IOC_FD_TO_HANDLE_32: - case XFS_IOC_PATH_TO_HANDLE_32: - case XFS_IOC_PATH_TO_FSHANDLE_32: { - struct xfs_fsop_handlereq hreq; - - if (xfs_compat_handlereq_copyin(&hreq, arg)) - return -XFS_ERROR(EFAULT); - cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); - return xfs_find_handle(cmd, &hreq); - } - case XFS_IOC_OPEN_BY_HANDLE_32: { - struct xfs_fsop_handlereq hreq; - - if (xfs_compat_handlereq_copyin(&hreq, arg)) - return -XFS_ERROR(EFAULT); - return xfs_open_by_handle(filp, &hreq); - } - case XFS_IOC_READLINK_BY_HANDLE_32: { - struct xfs_fsop_handlereq hreq; - - if (xfs_compat_handlereq_copyin(&hreq, arg)) - return -XFS_ERROR(EFAULT); - return xfs_readlink_by_handle(filp, &hreq); - } - case XFS_IOC_ATTRLIST_BY_HANDLE_32: - return xfs_compat_attrlist_by_handle(filp, arg); - case XFS_IOC_ATTRMULTI_BY_HANDLE_32: - return xfs_compat_attrmulti_by_handle(filp, arg); - case XFS_IOC_FSSETDM_BY_HANDLE_32: - return xfs_compat_fssetdm_by_handle(filp, arg); - default: - return -XFS_ERROR(ENOIOCTLCMD); - } -} diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.h b/fs/xfs/linux-2.6/xfs_ioctl32.h deleted file mode 100644 index 80f4060e8970..000000000000 --- a/fs/xfs/linux-2.6/xfs_ioctl32.h +++ /dev/null @@ -1,237 +0,0 @@ -/* - * Copyright (c) 2004-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_IOCTL32_H__ -#define __XFS_IOCTL32_H__ - -#include - -/* - * on 32-bit arches, ioctl argument structures may have different sizes - * and/or alignment. We define compat structures which match the - * 32-bit sizes/alignments here, and their associated ioctl numbers. - * - * xfs_ioctl32.c contains routines to copy these structures in and out. - */ - -/* stock kernel-level ioctls we support */ -#define XFS_IOC_GETXFLAGS_32 FS_IOC32_GETFLAGS -#define XFS_IOC_SETXFLAGS_32 FS_IOC32_SETFLAGS -#define XFS_IOC_GETVERSION_32 FS_IOC32_GETVERSION - -/* - * On intel, even if sizes match, alignment and/or padding may differ. - */ -#if defined(CONFIG_IA64) || defined(CONFIG_X86_64) -#define BROKEN_X86_ALIGNMENT -#define __compat_packed __attribute__((packed)) -#else -#define __compat_packed -#endif - -typedef struct compat_xfs_bstime { - compat_time_t tv_sec; /* seconds */ - __s32 tv_nsec; /* and nanoseconds */ -} compat_xfs_bstime_t; - -typedef struct compat_xfs_bstat { - __u64 bs_ino; /* inode number */ - __u16 bs_mode; /* type and mode */ - __u16 bs_nlink; /* number of links */ - __u32 bs_uid; /* user id */ - __u32 bs_gid; /* group id */ - __u32 bs_rdev; /* device value */ - __s32 bs_blksize; /* block size */ - __s64 bs_size; /* file size */ - compat_xfs_bstime_t bs_atime; /* access time */ - compat_xfs_bstime_t bs_mtime; /* modify time */ - compat_xfs_bstime_t bs_ctime; /* inode change time */ - int64_t bs_blocks; /* number of blocks */ - __u32 bs_xflags; /* extended flags */ - __s32 bs_extsize; /* extent size */ - __s32 bs_extents; /* number of extents */ - __u32 bs_gen; /* generation count */ - __u16 bs_projid_lo; /* lower part of project id */ -#define bs_projid bs_projid_lo /* (previously just bs_projid) */ - __u16 bs_projid_hi; /* high part of project id */ - unsigned char bs_pad[12]; /* pad space, unused */ - __u32 bs_dmevmask; /* DMIG event mask */ - __u16 bs_dmstate; /* DMIG state info */ - __u16 bs_aextents; /* attribute number of extents */ -} __compat_packed compat_xfs_bstat_t; - -typedef struct compat_xfs_fsop_bulkreq { - compat_uptr_t lastip; /* last inode # pointer */ - __s32 icount; /* count of entries in buffer */ - compat_uptr_t ubuffer; /* user buffer for inode desc. */ - compat_uptr_t ocount; /* output count pointer */ -} compat_xfs_fsop_bulkreq_t; - -#define XFS_IOC_FSBULKSTAT_32 \ - _IOWR('X', 101, struct compat_xfs_fsop_bulkreq) -#define XFS_IOC_FSBULKSTAT_SINGLE_32 \ - _IOWR('X', 102, struct compat_xfs_fsop_bulkreq) -#define XFS_IOC_FSINUMBERS_32 \ - _IOWR('X', 103, struct compat_xfs_fsop_bulkreq) - -typedef struct compat_xfs_fsop_handlereq { - __u32 fd; /* fd for FD_TO_HANDLE */ - compat_uptr_t path; /* user pathname */ - __u32 oflags; /* open flags */ - compat_uptr_t ihandle; /* user supplied handle */ - __u32 ihandlen; /* user supplied length */ - compat_uptr_t ohandle; /* user buffer for handle */ - compat_uptr_t ohandlen; /* user buffer length */ -} compat_xfs_fsop_handlereq_t; - -#define XFS_IOC_PATH_TO_FSHANDLE_32 \ - _IOWR('X', 104, struct compat_xfs_fsop_handlereq) -#define XFS_IOC_PATH_TO_HANDLE_32 \ - _IOWR('X', 105, struct compat_xfs_fsop_handlereq) -#define XFS_IOC_FD_TO_HANDLE_32 \ - _IOWR('X', 106, struct compat_xfs_fsop_handlereq) -#define XFS_IOC_OPEN_BY_HANDLE_32 \ - _IOWR('X', 107, struct compat_xfs_fsop_handlereq) -#define XFS_IOC_READLINK_BY_HANDLE_32 \ - _IOWR('X', 108, struct compat_xfs_fsop_handlereq) - -/* The bstat field in the swapext struct needs translation */ -typedef struct compat_xfs_swapext { - __int64_t sx_version; /* version */ - __int64_t sx_fdtarget; /* fd of target file */ - __int64_t sx_fdtmp; /* fd of tmp file */ - xfs_off_t sx_offset; /* offset into file */ - xfs_off_t sx_length; /* leng from offset */ - char sx_pad[16]; /* pad space, unused */ - compat_xfs_bstat_t sx_stat; /* stat of target b4 copy */ -} __compat_packed compat_xfs_swapext_t; - -#define XFS_IOC_SWAPEXT_32 _IOWR('X', 109, struct compat_xfs_swapext) - -typedef struct compat_xfs_fsop_attrlist_handlereq { - struct compat_xfs_fsop_handlereq hreq; /* handle interface structure */ - struct xfs_attrlist_cursor pos; /* opaque cookie, list offset */ - __u32 flags; /* which namespace to use */ - __u32 buflen; /* length of buffer supplied */ - compat_uptr_t buffer; /* returned names */ -} __compat_packed compat_xfs_fsop_attrlist_handlereq_t; - -/* Note: actually this is read/write */ -#define XFS_IOC_ATTRLIST_BY_HANDLE_32 \ - _IOW('X', 122, struct compat_xfs_fsop_attrlist_handlereq) - -/* am_opcodes defined in xfs_fs.h */ -typedef struct compat_xfs_attr_multiop { - __u32 am_opcode; - __s32 am_error; - compat_uptr_t am_attrname; - compat_uptr_t am_attrvalue; - __u32 am_length; - __u32 am_flags; -} compat_xfs_attr_multiop_t; - -typedef struct compat_xfs_fsop_attrmulti_handlereq { - struct compat_xfs_fsop_handlereq hreq; /* handle interface structure */ - __u32 opcount;/* count of following multiop */ - /* ptr to compat_xfs_attr_multiop */ - compat_uptr_t ops; /* attr_multi data */ -} compat_xfs_fsop_attrmulti_handlereq_t; - -#define XFS_IOC_ATTRMULTI_BY_HANDLE_32 \ - _IOW('X', 123, struct compat_xfs_fsop_attrmulti_handlereq) - -typedef struct compat_xfs_fsop_setdm_handlereq { - struct compat_xfs_fsop_handlereq hreq; /* handle information */ - /* ptr to struct fsdmidata */ - compat_uptr_t data; /* DMAPI data */ -} compat_xfs_fsop_setdm_handlereq_t; - -#define XFS_IOC_FSSETDM_BY_HANDLE_32 \ - _IOW('X', 121, struct compat_xfs_fsop_setdm_handlereq) - -#ifdef BROKEN_X86_ALIGNMENT -/* on ia32 l_start is on a 32-bit boundary */ -typedef struct compat_xfs_flock64 { - __s16 l_type; - __s16 l_whence; - __s64 l_start __attribute__((packed)); - /* len == 0 means until end of file */ - __s64 l_len __attribute__((packed)); - __s32 l_sysid; - __u32 l_pid; - __s32 l_pad[4]; /* reserve area */ -} compat_xfs_flock64_t; - -#define XFS_IOC_ALLOCSP_32 _IOW('X', 10, struct compat_xfs_flock64) -#define XFS_IOC_FREESP_32 _IOW('X', 11, struct compat_xfs_flock64) -#define XFS_IOC_ALLOCSP64_32 _IOW('X', 36, struct compat_xfs_flock64) -#define XFS_IOC_FREESP64_32 _IOW('X', 37, struct compat_xfs_flock64) -#define XFS_IOC_RESVSP_32 _IOW('X', 40, struct compat_xfs_flock64) -#define XFS_IOC_UNRESVSP_32 _IOW('X', 41, struct compat_xfs_flock64) -#define XFS_IOC_RESVSP64_32 _IOW('X', 42, struct compat_xfs_flock64) -#define XFS_IOC_UNRESVSP64_32 _IOW('X', 43, struct compat_xfs_flock64) -#define XFS_IOC_ZERO_RANGE_32 _IOW('X', 57, struct compat_xfs_flock64) - -typedef struct compat_xfs_fsop_geom_v1 { - __u32 blocksize; /* filesystem (data) block size */ - __u32 rtextsize; /* realtime extent size */ - __u32 agblocks; /* fsblocks in an AG */ - __u32 agcount; /* number of allocation groups */ - __u32 logblocks; /* fsblocks in the log */ - __u32 sectsize; /* (data) sector size, bytes */ - __u32 inodesize; /* inode size in bytes */ - __u32 imaxpct; /* max allowed inode space(%) */ - __u64 datablocks; /* fsblocks in data subvolume */ - __u64 rtblocks; /* fsblocks in realtime subvol */ - __u64 rtextents; /* rt extents in realtime subvol*/ - __u64 logstart; /* starting fsblock of the log */ - unsigned char uuid[16]; /* unique id of the filesystem */ - __u32 sunit; /* stripe unit, fsblocks */ - __u32 swidth; /* stripe width, fsblocks */ - __s32 version; /* structure version */ - __u32 flags; /* superblock version flags */ - __u32 logsectsize; /* log sector size, bytes */ - __u32 rtsectsize; /* realtime sector size, bytes */ - __u32 dirblocksize; /* directory block size, bytes */ -} __attribute__((packed)) compat_xfs_fsop_geom_v1_t; - -#define XFS_IOC_FSGEOMETRY_V1_32 \ - _IOR('X', 100, struct compat_xfs_fsop_geom_v1) - -typedef struct compat_xfs_inogrp { - __u64 xi_startino; /* starting inode number */ - __s32 xi_alloccount; /* # bits set in allocmask */ - __u64 xi_allocmask; /* mask of allocated inodes */ -} __attribute__((packed)) compat_xfs_inogrp_t; - -/* These growfs input structures have padding on the end, so must translate */ -typedef struct compat_xfs_growfs_data { - __u64 newblocks; /* new data subvol size, fsblocks */ - __u32 imaxpct; /* new inode space percentage limit */ -} __attribute__((packed)) compat_xfs_growfs_data_t; - -typedef struct compat_xfs_growfs_rt { - __u64 newblocks; /* new realtime size, fsblocks */ - __u32 extsize; /* new realtime extent size, fsblocks */ -} __attribute__((packed)) compat_xfs_growfs_rt_t; - -#define XFS_IOC_FSGROWFSDATA_32 _IOW('X', 110, struct compat_xfs_growfs_data) -#define XFS_IOC_FSGROWFSRT_32 _IOW('X', 112, struct compat_xfs_growfs_rt) - -#endif /* BROKEN_X86_ALIGNMENT */ - -#endif /* __XFS_IOCTL32_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c deleted file mode 100644 index b9c172b3fbbe..000000000000 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ /dev/null @@ -1,1210 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_acl.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_itable.h" -#include "xfs_rw.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_vnodeops.h" -#include "xfs_inode_item.h" -#include "xfs_trace.h" - -#include -#include -#include -#include -#include -#include -#include - -/* - * Bring the timestamps in the XFS inode uptodate. - * - * Used before writing the inode to disk. - */ -void -xfs_synchronize_times( - xfs_inode_t *ip) -{ - struct inode *inode = VFS_I(ip); - - ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; - ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; - ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec; - ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec; - ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec; - ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; -} - -/* - * If the linux inode is valid, mark it dirty. - * Used when committing a dirty inode into a transaction so that - * the inode will get written back by the linux code - */ -void -xfs_mark_inode_dirty_sync( - xfs_inode_t *ip) -{ - struct inode *inode = VFS_I(ip); - - if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) - mark_inode_dirty_sync(inode); -} - -void -xfs_mark_inode_dirty( - xfs_inode_t *ip) -{ - struct inode *inode = VFS_I(ip); - - if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) - mark_inode_dirty(inode); -} - -/* - * Hook in SELinux. This is not quite correct yet, what we really need - * here (as we do for default ACLs) is a mechanism by which creation of - * these attrs can be journalled at inode creation time (along with the - * inode, of course, such that log replay can't cause these to be lost). - */ -STATIC int -xfs_init_security( - struct inode *inode, - struct inode *dir, - const struct qstr *qstr) -{ - struct xfs_inode *ip = XFS_I(inode); - size_t length; - void *value; - unsigned char *name; - int error; - - error = security_inode_init_security(inode, dir, qstr, (char **)&name, - &value, &length); - if (error) { - if (error == -EOPNOTSUPP) - return 0; - return -error; - } - - error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); - - kfree(name); - kfree(value); - return error; -} - -static void -xfs_dentry_to_name( - struct xfs_name *namep, - struct dentry *dentry) -{ - namep->name = dentry->d_name.name; - namep->len = dentry->d_name.len; -} - -STATIC void -xfs_cleanup_inode( - struct inode *dir, - struct inode *inode, - struct dentry *dentry) -{ - struct xfs_name teardown; - - /* Oh, the horror. - * If we can't add the ACL or we fail in - * xfs_init_security we must back out. - * ENOSPC can hit here, among other things. - */ - xfs_dentry_to_name(&teardown, dentry); - - xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); - iput(inode); -} - -STATIC int -xfs_vn_mknod( - struct inode *dir, - struct dentry *dentry, - int mode, - dev_t rdev) -{ - struct inode *inode; - struct xfs_inode *ip = NULL; - struct posix_acl *default_acl = NULL; - struct xfs_name name; - int error; - - /* - * Irix uses Missed'em'V split, but doesn't want to see - * the upper 5 bits of (14bit) major. - */ - if (S_ISCHR(mode) || S_ISBLK(mode)) { - if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) - return -EINVAL; - rdev = sysv_encode_dev(rdev); - } else { - rdev = 0; - } - - if (IS_POSIXACL(dir)) { - default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(default_acl)) - return PTR_ERR(default_acl); - - if (!default_acl) - mode &= ~current_umask(); - } - - xfs_dentry_to_name(&name, dentry); - error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); - if (unlikely(error)) - goto out_free_acl; - - inode = VFS_I(ip); - - error = xfs_init_security(inode, dir, &dentry->d_name); - if (unlikely(error)) - goto out_cleanup_inode; - - if (default_acl) { - error = -xfs_inherit_acl(inode, default_acl); - default_acl = NULL; - if (unlikely(error)) - goto out_cleanup_inode; - } - - - d_instantiate(dentry, inode); - return -error; - - out_cleanup_inode: - xfs_cleanup_inode(dir, inode, dentry); - out_free_acl: - posix_acl_release(default_acl); - return -error; -} - -STATIC int -xfs_vn_create( - struct inode *dir, - struct dentry *dentry, - int mode, - struct nameidata *nd) -{ - return xfs_vn_mknod(dir, dentry, mode, 0); -} - -STATIC int -xfs_vn_mkdir( - struct inode *dir, - struct dentry *dentry, - int mode) -{ - return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); -} - -STATIC struct dentry * -xfs_vn_lookup( - struct inode *dir, - struct dentry *dentry, - struct nameidata *nd) -{ - struct xfs_inode *cip; - struct xfs_name name; - int error; - - if (dentry->d_name.len >= MAXNAMELEN) - return ERR_PTR(-ENAMETOOLONG); - - xfs_dentry_to_name(&name, dentry); - error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); - if (unlikely(error)) { - if (unlikely(error != ENOENT)) - return ERR_PTR(-error); - d_add(dentry, NULL); - return NULL; - } - - return d_splice_alias(VFS_I(cip), dentry); -} - -STATIC struct dentry * -xfs_vn_ci_lookup( - struct inode *dir, - struct dentry *dentry, - struct nameidata *nd) -{ - struct xfs_inode *ip; - struct xfs_name xname; - struct xfs_name ci_name; - struct qstr dname; - int error; - - if (dentry->d_name.len >= MAXNAMELEN) - return ERR_PTR(-ENAMETOOLONG); - - xfs_dentry_to_name(&xname, dentry); - error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); - if (unlikely(error)) { - if (unlikely(error != ENOENT)) - return ERR_PTR(-error); - /* - * call d_add(dentry, NULL) here when d_drop_negative_children - * is called in xfs_vn_mknod (ie. allow negative dentries - * with CI filesystems). - */ - return NULL; - } - - /* if exact match, just splice and exit */ - if (!ci_name.name) - return d_splice_alias(VFS_I(ip), dentry); - - /* else case-insensitive match... */ - dname.name = ci_name.name; - dname.len = ci_name.len; - dentry = d_add_ci(dentry, VFS_I(ip), &dname); - kmem_free(ci_name.name); - return dentry; -} - -STATIC int -xfs_vn_link( - struct dentry *old_dentry, - struct inode *dir, - struct dentry *dentry) -{ - struct inode *inode = old_dentry->d_inode; - struct xfs_name name; - int error; - - xfs_dentry_to_name(&name, dentry); - - error = xfs_link(XFS_I(dir), XFS_I(inode), &name); - if (unlikely(error)) - return -error; - - ihold(inode); - d_instantiate(dentry, inode); - return 0; -} - -STATIC int -xfs_vn_unlink( - struct inode *dir, - struct dentry *dentry) -{ - struct xfs_name name; - int error; - - xfs_dentry_to_name(&name, dentry); - - error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); - if (error) - return error; - - /* - * With unlink, the VFS makes the dentry "negative": no inode, - * but still hashed. This is incompatible with case-insensitive - * mode, so invalidate (unhash) the dentry in CI-mode. - */ - if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) - d_invalidate(dentry); - return 0; -} - -STATIC int -xfs_vn_symlink( - struct inode *dir, - struct dentry *dentry, - const char *symname) -{ - struct inode *inode; - struct xfs_inode *cip = NULL; - struct xfs_name name; - int error; - mode_t mode; - - mode = S_IFLNK | - (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); - xfs_dentry_to_name(&name, dentry); - - error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); - if (unlikely(error)) - goto out; - - inode = VFS_I(cip); - - error = xfs_init_security(inode, dir, &dentry->d_name); - if (unlikely(error)) - goto out_cleanup_inode; - - d_instantiate(dentry, inode); - return 0; - - out_cleanup_inode: - xfs_cleanup_inode(dir, inode, dentry); - out: - return -error; -} - -STATIC int -xfs_vn_rename( - struct inode *odir, - struct dentry *odentry, - struct inode *ndir, - struct dentry *ndentry) -{ - struct inode *new_inode = ndentry->d_inode; - struct xfs_name oname; - struct xfs_name nname; - - xfs_dentry_to_name(&oname, odentry); - xfs_dentry_to_name(&nname, ndentry); - - return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), - XFS_I(ndir), &nname, new_inode ? - XFS_I(new_inode) : NULL); -} - -/* - * careful here - this function can get called recursively, so - * we need to be very careful about how much stack we use. - * uio is kmalloced for this reason... - */ -STATIC void * -xfs_vn_follow_link( - struct dentry *dentry, - struct nameidata *nd) -{ - char *link; - int error = -ENOMEM; - - link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); - if (!link) - goto out_err; - - error = -xfs_readlink(XFS_I(dentry->d_inode), link); - if (unlikely(error)) - goto out_kfree; - - nd_set_link(nd, link); - return NULL; - - out_kfree: - kfree(link); - out_err: - nd_set_link(nd, ERR_PTR(error)); - return NULL; -} - -STATIC void -xfs_vn_put_link( - struct dentry *dentry, - struct nameidata *nd, - void *p) -{ - char *s = nd_get_link(nd); - - if (!IS_ERR(s)) - kfree(s); -} - -STATIC int -xfs_vn_getattr( - struct vfsmount *mnt, - struct dentry *dentry, - struct kstat *stat) -{ - struct inode *inode = dentry->d_inode; - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - - trace_xfs_getattr(ip); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - stat->size = XFS_ISIZE(ip); - stat->dev = inode->i_sb->s_dev; - stat->mode = ip->i_d.di_mode; - stat->nlink = ip->i_d.di_nlink; - stat->uid = ip->i_d.di_uid; - stat->gid = ip->i_d.di_gid; - stat->ino = ip->i_ino; - stat->atime = inode->i_atime; - stat->mtime = inode->i_mtime; - stat->ctime = inode->i_ctime; - stat->blocks = - XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); - - - switch (inode->i_mode & S_IFMT) { - case S_IFBLK: - case S_IFCHR: - stat->blksize = BLKDEV_IOSIZE; - stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, - sysv_minor(ip->i_df.if_u2.if_rdev)); - break; - default: - if (XFS_IS_REALTIME_INODE(ip)) { - /* - * If the file blocks are being allocated from a - * realtime volume, then return the inode's realtime - * extent size or the realtime volume's extent size. - */ - stat->blksize = - xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; - } else - stat->blksize = xfs_preferred_iosize(mp); - stat->rdev = 0; - break; - } - - return 0; -} - -int -xfs_setattr_nonsize( - struct xfs_inode *ip, - struct iattr *iattr, - int flags) -{ - xfs_mount_t *mp = ip->i_mount; - struct inode *inode = VFS_I(ip); - int mask = iattr->ia_valid; - xfs_trans_t *tp; - int error; - uid_t uid = 0, iuid = 0; - gid_t gid = 0, igid = 0; - struct xfs_dquot *udqp = NULL, *gdqp = NULL; - struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; - - trace_xfs_setattr(ip); - - if (mp->m_flags & XFS_MOUNT_RDONLY) - return XFS_ERROR(EROFS); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - error = -inode_change_ok(inode, iattr); - if (error) - return XFS_ERROR(error); - - ASSERT((mask & ATTR_SIZE) == 0); - - /* - * If disk quotas is on, we make sure that the dquots do exist on disk, - * before we start any other transactions. Trying to do this later - * is messy. We don't care to take a readlock to look at the ids - * in inode here, because we can't hold it across the trans_reserve. - * If the IDs do change before we take the ilock, we're covered - * because the i_*dquot fields will get updated anyway. - */ - if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { - uint qflags = 0; - - if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { - uid = iattr->ia_uid; - qflags |= XFS_QMOPT_UQUOTA; - } else { - uid = ip->i_d.di_uid; - } - if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { - gid = iattr->ia_gid; - qflags |= XFS_QMOPT_GQUOTA; - } else { - gid = ip->i_d.di_gid; - } - - /* - * We take a reference when we initialize udqp and gdqp, - * so it is important that we never blindly double trip on - * the same variable. See xfs_create() for an example. - */ - ASSERT(udqp == NULL); - ASSERT(gdqp == NULL); - error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip), - qflags, &udqp, &gdqp); - if (error) - return error; - } - - tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); - error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); - if (error) - goto out_dqrele; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - - /* - * Change file ownership. Must be the owner or privileged. - */ - if (mask & (ATTR_UID|ATTR_GID)) { - /* - * These IDs could have changed since we last looked at them. - * But, we're assured that if the ownership did change - * while we didn't have the inode locked, inode's dquot(s) - * would have changed also. - */ - iuid = ip->i_d.di_uid; - igid = ip->i_d.di_gid; - gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; - uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; - - /* - * Do a quota reservation only if uid/gid is actually - * going to change. - */ - if (XFS_IS_QUOTA_RUNNING(mp) && - ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) || - (XFS_IS_GQUOTA_ON(mp) && igid != gid))) { - ASSERT(tp); - error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, - capable(CAP_FOWNER) ? - XFS_QMOPT_FORCE_RES : 0); - if (error) /* out of quota */ - goto out_trans_cancel; - } - } - - xfs_trans_ijoin(tp, ip); - - /* - * Change file ownership. Must be the owner or privileged. - */ - if (mask & (ATTR_UID|ATTR_GID)) { - /* - * CAP_FSETID overrides the following restrictions: - * - * The set-user-ID and set-group-ID bits of a file will be - * cleared upon successful return from chown() - */ - if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && - !capable(CAP_FSETID)) - ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); - - /* - * Change the ownerships and register quota modifications - * in the transaction. - */ - if (iuid != uid) { - if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { - ASSERT(mask & ATTR_UID); - ASSERT(udqp); - olddquot1 = xfs_qm_vop_chown(tp, ip, - &ip->i_udquot, udqp); - } - ip->i_d.di_uid = uid; - inode->i_uid = uid; - } - if (igid != gid) { - if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { - ASSERT(!XFS_IS_PQUOTA_ON(mp)); - ASSERT(mask & ATTR_GID); - ASSERT(gdqp); - olddquot2 = xfs_qm_vop_chown(tp, ip, - &ip->i_gdquot, gdqp); - } - ip->i_d.di_gid = gid; - inode->i_gid = gid; - } - } - - /* - * Change file access modes. - */ - if (mask & ATTR_MODE) { - umode_t mode = iattr->ia_mode; - - if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) - mode &= ~S_ISGID; - - ip->i_d.di_mode &= S_IFMT; - ip->i_d.di_mode |= mode & ~S_IFMT; - - inode->i_mode &= S_IFMT; - inode->i_mode |= mode & ~S_IFMT; - } - - /* - * Change file access or modified times. - */ - if (mask & ATTR_ATIME) { - inode->i_atime = iattr->ia_atime; - ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; - ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; - ip->i_update_core = 1; - } - if (mask & ATTR_CTIME) { - inode->i_ctime = iattr->ia_ctime; - ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; - ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; - ip->i_update_core = 1; - } - if (mask & ATTR_MTIME) { - inode->i_mtime = iattr->ia_mtime; - ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; - ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; - ip->i_update_core = 1; - } - - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - - XFS_STATS_INC(xs_ig_attrchg); - - if (mp->m_flags & XFS_MOUNT_WSYNC) - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - /* - * Release any dquot(s) the inode had kept before chown. - */ - xfs_qm_dqrele(olddquot1); - xfs_qm_dqrele(olddquot2); - xfs_qm_dqrele(udqp); - xfs_qm_dqrele(gdqp); - - if (error) - return XFS_ERROR(error); - - /* - * XXX(hch): Updating the ACL entries is not atomic vs the i_mode - * update. We could avoid this with linked transactions - * and passing down the transaction pointer all the way - * to attr_set. No previous user of the generic - * Posix ACL code seems to care about this issue either. - */ - if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { - error = -xfs_acl_chmod(inode); - if (error) - return XFS_ERROR(error); - } - - return 0; - -out_trans_cancel: - xfs_trans_cancel(tp, 0); - xfs_iunlock(ip, XFS_ILOCK_EXCL); -out_dqrele: - xfs_qm_dqrele(udqp); - xfs_qm_dqrele(gdqp); - return error; -} - -/* - * Truncate file. Must have write permission and not be a directory. - */ -int -xfs_setattr_size( - struct xfs_inode *ip, - struct iattr *iattr, - int flags) -{ - struct xfs_mount *mp = ip->i_mount; - struct inode *inode = VFS_I(ip); - int mask = iattr->ia_valid; - struct xfs_trans *tp; - int error; - uint lock_flags; - uint commit_flags = 0; - - trace_xfs_setattr(ip); - - if (mp->m_flags & XFS_MOUNT_RDONLY) - return XFS_ERROR(EROFS); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - error = -inode_change_ok(inode, iattr); - if (error) - return XFS_ERROR(error); - - ASSERT(S_ISREG(ip->i_d.di_mode)); - ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| - ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| - ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); - - lock_flags = XFS_ILOCK_EXCL; - if (!(flags & XFS_ATTR_NOLOCK)) - lock_flags |= XFS_IOLOCK_EXCL; - xfs_ilock(ip, lock_flags); - - /* - * Short circuit the truncate case for zero length files. - */ - if (iattr->ia_size == 0 && - ip->i_size == 0 && ip->i_d.di_nextents == 0) { - if (!(mask & (ATTR_CTIME|ATTR_MTIME))) - goto out_unlock; - - /* - * Use the regular setattr path to update the timestamps. - */ - xfs_iunlock(ip, lock_flags); - iattr->ia_valid &= ~ATTR_SIZE; - return xfs_setattr_nonsize(ip, iattr, 0); - } - - /* - * Make sure that the dquots are attached to the inode. - */ - error = xfs_qm_dqattach_locked(ip, 0); - if (error) - goto out_unlock; - - /* - * Now we can make the changes. Before we join the inode to the - * transaction, take care of the part of the truncation that must be - * done without the inode lock. This needs to be done before joining - * the inode to the transaction, because the inode cannot be unlocked - * once it is a part of the transaction. - */ - if (iattr->ia_size > ip->i_size) { - /* - * Do the first part of growing a file: zero any data in the - * last block that is beyond the old EOF. We need to do this - * before the inode is joined to the transaction to modify - * i_size. - */ - error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size); - if (error) - goto out_unlock; - } - xfs_iunlock(ip, XFS_ILOCK_EXCL); - lock_flags &= ~XFS_ILOCK_EXCL; - - /* - * We are going to log the inode size change in this transaction so - * any previous writes that are beyond the on disk EOF and the new - * EOF that have not been written out need to be written here. If we - * do not write the data out, we expose ourselves to the null files - * problem. - * - * Only flush from the on disk size to the smaller of the in memory - * file size or the new size as that's the range we really care about - * here and prevents waiting for other data not within the range we - * care about here. - */ - if (ip->i_size != ip->i_d.di_size && iattr->ia_size > ip->i_d.di_size) { - error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size, - XBF_ASYNC, FI_NONE); - if (error) - goto out_unlock; - } - - /* - * Wait for all I/O to complete. - */ - xfs_ioend_wait(ip); - - error = -block_truncate_page(inode->i_mapping, iattr->ia_size, - xfs_get_blocks); - if (error) - goto out_unlock; - - tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); - error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); - if (error) - goto out_trans_cancel; - - truncate_setsize(inode, iattr->ia_size); - - commit_flags = XFS_TRANS_RELEASE_LOG_RES; - lock_flags |= XFS_ILOCK_EXCL; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - - xfs_trans_ijoin(tp, ip); - - /* - * Only change the c/mtime if we are changing the size or we are - * explicitly asked to change it. This handles the semantic difference - * between truncate() and ftruncate() as implemented in the VFS. - * - * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a - * special case where we need to update the times despite not having - * these flags set. For all other operations the VFS set these flags - * explicitly if it wants a timestamp update. - */ - if (iattr->ia_size != ip->i_size && - (!(mask & (ATTR_CTIME | ATTR_MTIME)))) { - iattr->ia_ctime = iattr->ia_mtime = - current_fs_time(inode->i_sb); - mask |= ATTR_CTIME | ATTR_MTIME; - } - - if (iattr->ia_size > ip->i_size) { - ip->i_d.di_size = iattr->ia_size; - ip->i_size = iattr->ia_size; - } else if (iattr->ia_size <= ip->i_size || - (iattr->ia_size == 0 && ip->i_d.di_nextents)) { - error = xfs_itruncate_data(&tp, ip, iattr->ia_size); - if (error) - goto out_trans_abort; - - /* - * Truncated "down", so we're removing references to old data - * here - if we delay flushing for a long time, we expose - * ourselves unduly to the notorious NULL files problem. So, - * we mark this inode and flush it when the file is closed, - * and do not wait the usual (long) time for writeout. - */ - xfs_iflags_set(ip, XFS_ITRUNCATED); - } - - if (mask & ATTR_CTIME) { - inode->i_ctime = iattr->ia_ctime; - ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; - ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; - ip->i_update_core = 1; - } - if (mask & ATTR_MTIME) { - inode->i_mtime = iattr->ia_mtime; - ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; - ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; - ip->i_update_core = 1; - } - - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - - XFS_STATS_INC(xs_ig_attrchg); - - if (mp->m_flags & XFS_MOUNT_WSYNC) - xfs_trans_set_sync(tp); - - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); -out_unlock: - if (lock_flags) - xfs_iunlock(ip, lock_flags); - return error; - -out_trans_abort: - commit_flags |= XFS_TRANS_ABORT; -out_trans_cancel: - xfs_trans_cancel(tp, commit_flags); - goto out_unlock; -} - -STATIC int -xfs_vn_setattr( - struct dentry *dentry, - struct iattr *iattr) -{ - if (iattr->ia_valid & ATTR_SIZE) - return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0); - return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0); -} - -#define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) - -/* - * Call fiemap helper to fill in user data. - * Returns positive errors to xfs_getbmap. - */ -STATIC int -xfs_fiemap_format( - void **arg, - struct getbmapx *bmv, - int *full) -{ - int error; - struct fiemap_extent_info *fieinfo = *arg; - u32 fiemap_flags = 0; - u64 logical, physical, length; - - /* Do nothing for a hole */ - if (bmv->bmv_block == -1LL) - return 0; - - logical = BBTOB(bmv->bmv_offset); - physical = BBTOB(bmv->bmv_block); - length = BBTOB(bmv->bmv_length); - - if (bmv->bmv_oflags & BMV_OF_PREALLOC) - fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; - else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { - fiemap_flags |= FIEMAP_EXTENT_DELALLOC; - physical = 0; /* no block yet */ - } - if (bmv->bmv_oflags & BMV_OF_LAST) - fiemap_flags |= FIEMAP_EXTENT_LAST; - - error = fiemap_fill_next_extent(fieinfo, logical, physical, - length, fiemap_flags); - if (error > 0) { - error = 0; - *full = 1; /* user array now full */ - } - - return -error; -} - -STATIC int -xfs_vn_fiemap( - struct inode *inode, - struct fiemap_extent_info *fieinfo, - u64 start, - u64 length) -{ - xfs_inode_t *ip = XFS_I(inode); - struct getbmapx bm; - int error; - - error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); - if (error) - return error; - - /* Set up bmap header for xfs internal routine */ - bm.bmv_offset = BTOBB(start); - /* Special case for whole file */ - if (length == FIEMAP_MAX_OFFSET) - bm.bmv_length = -1LL; - else - bm.bmv_length = BTOBB(length); - - /* We add one because in getbmap world count includes the header */ - bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : - fieinfo->fi_extents_max + 1; - bm.bmv_count = min_t(__s32, bm.bmv_count, - (PAGE_SIZE * 16 / sizeof(struct getbmapx))); - bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; - if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) - bm.bmv_iflags |= BMV_IF_ATTRFORK; - if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) - bm.bmv_iflags |= BMV_IF_DELALLOC; - - error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); - if (error) - return -error; - - return 0; -} - -static const struct inode_operations xfs_inode_operations = { - .get_acl = xfs_get_acl, - .getattr = xfs_vn_getattr, - .setattr = xfs_vn_setattr, - .setxattr = generic_setxattr, - .getxattr = generic_getxattr, - .removexattr = generic_removexattr, - .listxattr = xfs_vn_listxattr, - .fiemap = xfs_vn_fiemap, -}; - -static const struct inode_operations xfs_dir_inode_operations = { - .create = xfs_vn_create, - .lookup = xfs_vn_lookup, - .link = xfs_vn_link, - .unlink = xfs_vn_unlink, - .symlink = xfs_vn_symlink, - .mkdir = xfs_vn_mkdir, - /* - * Yes, XFS uses the same method for rmdir and unlink. - * - * There are some subtile differences deeper in the code, - * but we use S_ISDIR to check for those. - */ - .rmdir = xfs_vn_unlink, - .mknod = xfs_vn_mknod, - .rename = xfs_vn_rename, - .get_acl = xfs_get_acl, - .getattr = xfs_vn_getattr, - .setattr = xfs_vn_setattr, - .setxattr = generic_setxattr, - .getxattr = generic_getxattr, - .removexattr = generic_removexattr, - .listxattr = xfs_vn_listxattr, -}; - -static const struct inode_operations xfs_dir_ci_inode_operations = { - .create = xfs_vn_create, - .lookup = xfs_vn_ci_lookup, - .link = xfs_vn_link, - .unlink = xfs_vn_unlink, - .symlink = xfs_vn_symlink, - .mkdir = xfs_vn_mkdir, - /* - * Yes, XFS uses the same method for rmdir and unlink. - * - * There are some subtile differences deeper in the code, - * but we use S_ISDIR to check for those. - */ - .rmdir = xfs_vn_unlink, - .mknod = xfs_vn_mknod, - .rename = xfs_vn_rename, - .get_acl = xfs_get_acl, - .getattr = xfs_vn_getattr, - .setattr = xfs_vn_setattr, - .setxattr = generic_setxattr, - .getxattr = generic_getxattr, - .removexattr = generic_removexattr, - .listxattr = xfs_vn_listxattr, -}; - -static const struct inode_operations xfs_symlink_inode_operations = { - .readlink = generic_readlink, - .follow_link = xfs_vn_follow_link, - .put_link = xfs_vn_put_link, - .get_acl = xfs_get_acl, - .getattr = xfs_vn_getattr, - .setattr = xfs_vn_setattr, - .setxattr = generic_setxattr, - .getxattr = generic_getxattr, - .removexattr = generic_removexattr, - .listxattr = xfs_vn_listxattr, -}; - -STATIC void -xfs_diflags_to_iflags( - struct inode *inode, - struct xfs_inode *ip) -{ - if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) - inode->i_flags |= S_IMMUTABLE; - else - inode->i_flags &= ~S_IMMUTABLE; - if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) - inode->i_flags |= S_APPEND; - else - inode->i_flags &= ~S_APPEND; - if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) - inode->i_flags |= S_SYNC; - else - inode->i_flags &= ~S_SYNC; - if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) - inode->i_flags |= S_NOATIME; - else - inode->i_flags &= ~S_NOATIME; -} - -/* - * Initialize the Linux inode, set up the operation vectors and - * unlock the inode. - * - * When reading existing inodes from disk this is called directly - * from xfs_iget, when creating a new inode it is called from - * xfs_ialloc after setting up the inode. - * - * We are always called with an uninitialised linux inode here. - * We need to initialise the necessary fields and take a reference - * on it. - */ -void -xfs_setup_inode( - struct xfs_inode *ip) -{ - struct inode *inode = &ip->i_vnode; - - inode->i_ino = ip->i_ino; - inode->i_state = I_NEW; - - inode_sb_list_add(inode); - /* make the inode look hashed for the writeback code */ - hlist_add_fake(&inode->i_hash); - - inode->i_mode = ip->i_d.di_mode; - inode->i_nlink = ip->i_d.di_nlink; - inode->i_uid = ip->i_d.di_uid; - inode->i_gid = ip->i_d.di_gid; - - switch (inode->i_mode & S_IFMT) { - case S_IFBLK: - case S_IFCHR: - inode->i_rdev = - MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, - sysv_minor(ip->i_df.if_u2.if_rdev)); - break; - default: - inode->i_rdev = 0; - break; - } - - inode->i_generation = ip->i_d.di_gen; - i_size_write(inode, ip->i_d.di_size); - inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; - inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; - inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; - inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; - inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; - inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; - xfs_diflags_to_iflags(inode, ip); - - switch (inode->i_mode & S_IFMT) { - case S_IFREG: - inode->i_op = &xfs_inode_operations; - inode->i_fop = &xfs_file_operations; - inode->i_mapping->a_ops = &xfs_address_space_operations; - break; - case S_IFDIR: - if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) - inode->i_op = &xfs_dir_ci_inode_operations; - else - inode->i_op = &xfs_dir_inode_operations; - inode->i_fop = &xfs_dir_file_operations; - break; - case S_IFLNK: - inode->i_op = &xfs_symlink_inode_operations; - if (!(ip->i_df.if_flags & XFS_IFINLINE)) - inode->i_mapping->a_ops = &xfs_address_space_operations; - break; - default: - inode->i_op = &xfs_inode_operations; - init_special_inode(inode, inode->i_mode, inode->i_rdev); - break; - } - - /* - * If there is no attribute fork no ACL can exist on this inode, - * and it can't have any file capabilities attached to it either. - */ - if (!XFS_IFORK_Q(ip)) { - inode_has_no_xattr(inode); - cache_no_acl(inode); - } - - xfs_iflags_clear(ip, XFS_INEW); - barrier(); - - unlock_new_inode(inode); -} diff --git a/fs/xfs/linux-2.6/xfs_iops.h b/fs/xfs/linux-2.6/xfs_iops.h deleted file mode 100644 index ef41c92ce66e..000000000000 --- a/fs/xfs/linux-2.6/xfs_iops.h +++ /dev/null @@ -1,30 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_IOPS_H__ -#define __XFS_IOPS_H__ - -struct xfs_inode; - -extern const struct file_operations xfs_file_operations; -extern const struct file_operations xfs_dir_file_operations; - -extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size); - -extern void xfs_setup_inode(struct xfs_inode *); - -#endif /* __XFS_IOPS_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h deleted file mode 100644 index 1e8a45e74c3e..000000000000 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ /dev/null @@ -1,309 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_LINUX__ -#define __XFS_LINUX__ - -#include - -/* - * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits. - * XFS_BIG_INUMS requires XFS_BIG_BLKNOS to be set. - */ -#if defined(CONFIG_LBDAF) || (BITS_PER_LONG == 64) -# define XFS_BIG_BLKNOS 1 -# define XFS_BIG_INUMS 1 -#else -# define XFS_BIG_BLKNOS 0 -# define XFS_BIG_INUMS 0 -#endif - -#include "xfs_types.h" - -#include "kmem.h" -#include "mrlock.h" -#include "time.h" -#include "uuid.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include "xfs_vnode.h" -#include "xfs_stats.h" -#include "xfs_sysctl.h" -#include "xfs_iops.h" -#include "xfs_aops.h" -#include "xfs_super.h" -#include "xfs_buf.h" -#include "xfs_message.h" - -#ifdef __BIG_ENDIAN -#define XFS_NATIVE_HOST 1 -#else -#undef XFS_NATIVE_HOST -#endif - -/* - * Feature macros (disable/enable) - */ -#ifdef CONFIG_SMP -#define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ -#else -#undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ -#endif - -#define irix_sgid_inherit xfs_params.sgid_inherit.val -#define irix_symlink_mode xfs_params.symlink_mode.val -#define xfs_panic_mask xfs_params.panic_mask.val -#define xfs_error_level xfs_params.error_level.val -#define xfs_syncd_centisecs xfs_params.syncd_timer.val -#define xfs_stats_clear xfs_params.stats_clear.val -#define xfs_inherit_sync xfs_params.inherit_sync.val -#define xfs_inherit_nodump xfs_params.inherit_nodump.val -#define xfs_inherit_noatime xfs_params.inherit_noatim.val -#define xfs_buf_timer_centisecs xfs_params.xfs_buf_timer.val -#define xfs_buf_age_centisecs xfs_params.xfs_buf_age.val -#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val -#define xfs_rotorstep xfs_params.rotorstep.val -#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val -#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val - -#define current_cpu() (raw_smp_processor_id()) -#define current_pid() (current->pid) -#define current_test_flags(f) (current->flags & (f)) -#define current_set_flags_nested(sp, f) \ - (*(sp) = current->flags, current->flags |= (f)) -#define current_clear_flags_nested(sp, f) \ - (*(sp) = current->flags, current->flags &= ~(f)) -#define current_restore_flags_nested(sp, f) \ - (current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) - -#define spinlock_destroy(lock) - -#define NBBY 8 /* number of bits per byte */ - -/* - * Size of block device i/o is parameterized here. - * Currently the system supports page-sized i/o. - */ -#define BLKDEV_IOSHIFT PAGE_CACHE_SHIFT -#define BLKDEV_IOSIZE (1<> 32; - __low = c; - if (__high) { - __upper = __high % (b); - __high = __high / (b); - } - asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); - asm("":"=A" (c):"a" (__low),"d" (__high)); - *(__u64 *)a = c; - return __mod; - } - } - - /* NOTREACHED */ - return 0; -} - -/* Side effect free 64 bit mod operation */ -static inline __u32 xfs_do_mod(void *a, __u32 b, int n) -{ - switch (n) { - case 4: - return *(__u32 *)a % b; - case 8: - { - unsigned long __upper, __low, __high, __mod; - __u64 c = *(__u64 *)a; - __upper = __high = c >> 32; - __low = c; - if (__high) { - __upper = __high % (b); - __high = __high / (b); - } - asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); - asm("":"=A" (c):"a" (__low),"d" (__high)); - return __mod; - } - } - - /* NOTREACHED */ - return 0; -} -#else -static inline __u32 xfs_do_div(void *a, __u32 b, int n) -{ - __u32 mod; - - switch (n) { - case 4: - mod = *(__u32 *)a % b; - *(__u32 *)a = *(__u32 *)a / b; - return mod; - case 8: - mod = do_div(*(__u64 *)a, b); - return mod; - } - - /* NOTREACHED */ - return 0; -} - -/* Side effect free 64 bit mod operation */ -static inline __u32 xfs_do_mod(void *a, __u32 b, int n) -{ - switch (n) { - case 4: - return *(__u32 *)a % b; - case 8: - { - __u64 c = *(__u64 *)a; - return do_div(c, b); - } - } - - /* NOTREACHED */ - return 0; -} -#endif - -#undef do_div -#define do_div(a, b) xfs_do_div(&(a), (b), sizeof(a)) -#define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a)) - -static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y) -{ - x += y - 1; - do_div(x, y); - return(x * y); -} - -static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y) -{ - x += y - 1; - do_div(x, y); - return x; -} - -/* ARM old ABI has some weird alignment/padding */ -#if defined(__arm__) && !defined(__ARM_EABI__) -#define __arch_pack __attribute__((packed)) -#else -#define __arch_pack -#endif - -#define ASSERT_ALWAYS(expr) \ - (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) - -#ifndef DEBUG -#define ASSERT(expr) ((void)0) - -#ifndef STATIC -# define STATIC static noinline -#endif - -#else /* DEBUG */ - -#define ASSERT(expr) \ - (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) - -#ifndef STATIC -# define STATIC noinline -#endif - -#endif /* DEBUG */ - -#endif /* __XFS_LINUX__ */ diff --git a/fs/xfs/linux-2.6/xfs_message.c b/fs/xfs/linux-2.6/xfs_message.c deleted file mode 100644 index bd672def95ac..000000000000 --- a/fs/xfs/linux-2.6/xfs_message.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - * Copyright (c) 2011 Red Hat, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_mount.h" - -/* - * XFS logging functions - */ -static void -__xfs_printk( - const char *level, - const struct xfs_mount *mp, - struct va_format *vaf) -{ - if (mp && mp->m_fsname) { - printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf); - return; - } - printk("%sXFS: %pV\n", level, vaf); -} - -#define define_xfs_printk_level(func, kern_level) \ -void func(const struct xfs_mount *mp, const char *fmt, ...) \ -{ \ - struct va_format vaf; \ - va_list args; \ - \ - va_start(args, fmt); \ - \ - vaf.fmt = fmt; \ - vaf.va = &args; \ - \ - __xfs_printk(kern_level, mp, &vaf); \ - va_end(args); \ -} \ - -define_xfs_printk_level(xfs_emerg, KERN_EMERG); -define_xfs_printk_level(xfs_alert, KERN_ALERT); -define_xfs_printk_level(xfs_crit, KERN_CRIT); -define_xfs_printk_level(xfs_err, KERN_ERR); -define_xfs_printk_level(xfs_warn, KERN_WARNING); -define_xfs_printk_level(xfs_notice, KERN_NOTICE); -define_xfs_printk_level(xfs_info, KERN_INFO); -#ifdef DEBUG -define_xfs_printk_level(xfs_debug, KERN_DEBUG); -#endif - -void -xfs_alert_tag( - const struct xfs_mount *mp, - int panic_tag, - const char *fmt, ...) -{ - struct va_format vaf; - va_list args; - int do_panic = 0; - - if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) { - xfs_alert(mp, "Transforming an alert into a BUG."); - do_panic = 1; - } - - va_start(args, fmt); - - vaf.fmt = fmt; - vaf.va = &args; - - __xfs_printk(KERN_ALERT, mp, &vaf); - va_end(args); - - BUG_ON(do_panic); -} - -void -assfail(char *expr, char *file, int line) -{ - xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d", - expr, file, line); - BUG(); -} - -void -xfs_hex_dump(void *p, int length) -{ - print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1); -} diff --git a/fs/xfs/linux-2.6/xfs_message.h b/fs/xfs/linux-2.6/xfs_message.h deleted file mode 100644 index 7fb7ea007672..000000000000 --- a/fs/xfs/linux-2.6/xfs_message.h +++ /dev/null @@ -1,39 +0,0 @@ -#ifndef __XFS_MESSAGE_H -#define __XFS_MESSAGE_H 1 - -struct xfs_mount; - -extern void xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern void xfs_alert(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern void xfs_alert_tag(const struct xfs_mount *mp, int tag, - const char *fmt, ...) - __attribute__ ((format (printf, 3, 4))); -extern void xfs_crit(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern void xfs_err(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern void xfs_warn(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern void xfs_notice(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern void xfs_info(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); - -#ifdef DEBUG -extern void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -#else -static inline void -__attribute__ ((format (printf, 2, 3))) -xfs_debug(const struct xfs_mount *mp, const char *fmt, ...) -{ -} -#endif - -extern void assfail(char *expr, char *f, int l); - -extern void xfs_hex_dump(void *p, int length); - -#endif /* __XFS_MESSAGE_H */ diff --git a/fs/xfs/linux-2.6/xfs_quotaops.c b/fs/xfs/linux-2.6/xfs_quotaops.c deleted file mode 100644 index 7e76f537abb7..000000000000 --- a/fs/xfs/linux-2.6/xfs_quotaops.c +++ /dev/null @@ -1,139 +0,0 @@ -/* - * Copyright (c) 2008, Christoph Hellwig - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_sb.h" -#include "xfs_inum.h" -#include "xfs_log.h" -#include "xfs_ag.h" -#include "xfs_mount.h" -#include "xfs_quota.h" -#include "xfs_trans.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_qm.h" -#include - - -STATIC int -xfs_quota_type(int type) -{ - switch (type) { - case USRQUOTA: - return XFS_DQ_USER; - case GRPQUOTA: - return XFS_DQ_GROUP; - default: - return XFS_DQ_PROJ; - } -} - -STATIC int -xfs_fs_get_xstate( - struct super_block *sb, - struct fs_quota_stat *fqs) -{ - struct xfs_mount *mp = XFS_M(sb); - - if (!XFS_IS_QUOTA_RUNNING(mp)) - return -ENOSYS; - return -xfs_qm_scall_getqstat(mp, fqs); -} - -STATIC int -xfs_fs_set_xstate( - struct super_block *sb, - unsigned int uflags, - int op) -{ - struct xfs_mount *mp = XFS_M(sb); - unsigned int flags = 0; - - if (sb->s_flags & MS_RDONLY) - return -EROFS; - if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp)) - return -ENOSYS; - - if (uflags & FS_QUOTA_UDQ_ACCT) - flags |= XFS_UQUOTA_ACCT; - if (uflags & FS_QUOTA_PDQ_ACCT) - flags |= XFS_PQUOTA_ACCT; - if (uflags & FS_QUOTA_GDQ_ACCT) - flags |= XFS_GQUOTA_ACCT; - if (uflags & FS_QUOTA_UDQ_ENFD) - flags |= XFS_UQUOTA_ENFD; - if (uflags & (FS_QUOTA_PDQ_ENFD|FS_QUOTA_GDQ_ENFD)) - flags |= XFS_OQUOTA_ENFD; - - switch (op) { - case Q_XQUOTAON: - return -xfs_qm_scall_quotaon(mp, flags); - case Q_XQUOTAOFF: - if (!XFS_IS_QUOTA_ON(mp)) - return -EINVAL; - return -xfs_qm_scall_quotaoff(mp, flags); - case Q_XQUOTARM: - if (XFS_IS_QUOTA_ON(mp)) - return -EINVAL; - return -xfs_qm_scall_trunc_qfiles(mp, flags); - } - - return -EINVAL; -} - -STATIC int -xfs_fs_get_dqblk( - struct super_block *sb, - int type, - qid_t id, - struct fs_disk_quota *fdq) -{ - struct xfs_mount *mp = XFS_M(sb); - - if (!XFS_IS_QUOTA_RUNNING(mp)) - return -ENOSYS; - if (!XFS_IS_QUOTA_ON(mp)) - return -ESRCH; - - return -xfs_qm_scall_getquota(mp, id, xfs_quota_type(type), fdq); -} - -STATIC int -xfs_fs_set_dqblk( - struct super_block *sb, - int type, - qid_t id, - struct fs_disk_quota *fdq) -{ - struct xfs_mount *mp = XFS_M(sb); - - if (sb->s_flags & MS_RDONLY) - return -EROFS; - if (!XFS_IS_QUOTA_RUNNING(mp)) - return -ENOSYS; - if (!XFS_IS_QUOTA_ON(mp)) - return -ESRCH; - - return -xfs_qm_scall_setqlim(mp, id, xfs_quota_type(type), fdq); -} - -const struct quotactl_ops xfs_quotactl_operations = { - .get_xstate = xfs_fs_get_xstate, - .set_xstate = xfs_fs_set_xstate, - .get_dqblk = xfs_fs_get_dqblk, - .set_dqblk = xfs_fs_set_dqblk, -}; diff --git a/fs/xfs/linux-2.6/xfs_stats.c b/fs/xfs/linux-2.6/xfs_stats.c deleted file mode 100644 index 76fdc5861932..000000000000 --- a/fs/xfs/linux-2.6/xfs_stats.c +++ /dev/null @@ -1,122 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include - -DEFINE_PER_CPU(struct xfsstats, xfsstats); - -static int xfs_stat_proc_show(struct seq_file *m, void *v) -{ - int c, i, j, val; - __uint64_t xs_xstrat_bytes = 0; - __uint64_t xs_write_bytes = 0; - __uint64_t xs_read_bytes = 0; - - static const struct xstats_entry { - char *desc; - int endpoint; - } xstats[] = { - { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC }, - { "abt", XFSSTAT_END_ALLOC_BTREE }, - { "blk_map", XFSSTAT_END_BLOCK_MAPPING }, - { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE }, - { "dir", XFSSTAT_END_DIRECTORY_OPS }, - { "trans", XFSSTAT_END_TRANSACTIONS }, - { "ig", XFSSTAT_END_INODE_OPS }, - { "log", XFSSTAT_END_LOG_OPS }, - { "push_ail", XFSSTAT_END_TAIL_PUSHING }, - { "xstrat", XFSSTAT_END_WRITE_CONVERT }, - { "rw", XFSSTAT_END_READ_WRITE_OPS }, - { "attr", XFSSTAT_END_ATTRIBUTE_OPS }, - { "icluster", XFSSTAT_END_INODE_CLUSTER }, - { "vnodes", XFSSTAT_END_VNODE_OPS }, - { "buf", XFSSTAT_END_BUF }, - { "abtb2", XFSSTAT_END_ABTB_V2 }, - { "abtc2", XFSSTAT_END_ABTC_V2 }, - { "bmbt2", XFSSTAT_END_BMBT_V2 }, - { "ibt2", XFSSTAT_END_IBT_V2 }, - }; - - /* Loop over all stats groups */ - for (i=j = 0; i < ARRAY_SIZE(xstats); i++) { - seq_printf(m, "%s", xstats[i].desc); - /* inner loop does each group */ - while (j < xstats[i].endpoint) { - val = 0; - /* sum over all cpus */ - for_each_possible_cpu(c) - val += *(((__u32*)&per_cpu(xfsstats, c) + j)); - seq_printf(m, " %u", val); - j++; - } - seq_putc(m, '\n'); - } - /* extra precision counters */ - for_each_possible_cpu(i) { - xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; - xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; - xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; - } - - seq_printf(m, "xpc %Lu %Lu %Lu\n", - xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); - seq_printf(m, "debug %u\n", -#if defined(DEBUG) - 1); -#else - 0); -#endif - return 0; -} - -static int xfs_stat_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, xfs_stat_proc_show, NULL); -} - -static const struct file_operations xfs_stat_proc_fops = { - .owner = THIS_MODULE, - .open = xfs_stat_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -int -xfs_init_procfs(void) -{ - if (!proc_mkdir("fs/xfs", NULL)) - goto out; - - if (!proc_create("fs/xfs/stat", 0, NULL, - &xfs_stat_proc_fops)) - goto out_remove_entry; - return 0; - - out_remove_entry: - remove_proc_entry("fs/xfs", NULL); - out: - return -ENOMEM; -} - -void -xfs_cleanup_procfs(void) -{ - remove_proc_entry("fs/xfs/stat", NULL); - remove_proc_entry("fs/xfs", NULL); -} diff --git a/fs/xfs/linux-2.6/xfs_stats.h b/fs/xfs/linux-2.6/xfs_stats.h deleted file mode 100644 index 736854b1ca1a..000000000000 --- a/fs/xfs/linux-2.6/xfs_stats.h +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Copyright (c) 2000,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_STATS_H__ -#define __XFS_STATS_H__ - - -#if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF) - -#include - -/* - * XFS global statistics - */ -struct xfsstats { -# define XFSSTAT_END_EXTENT_ALLOC 4 - __uint32_t xs_allocx; - __uint32_t xs_allocb; - __uint32_t xs_freex; - __uint32_t xs_freeb; -# define XFSSTAT_END_ALLOC_BTREE (XFSSTAT_END_EXTENT_ALLOC+4) - __uint32_t xs_abt_lookup; - __uint32_t xs_abt_compare; - __uint32_t xs_abt_insrec; - __uint32_t xs_abt_delrec; -# define XFSSTAT_END_BLOCK_MAPPING (XFSSTAT_END_ALLOC_BTREE+7) - __uint32_t xs_blk_mapr; - __uint32_t xs_blk_mapw; - __uint32_t xs_blk_unmap; - __uint32_t xs_add_exlist; - __uint32_t xs_del_exlist; - __uint32_t xs_look_exlist; - __uint32_t xs_cmp_exlist; -# define XFSSTAT_END_BLOCK_MAP_BTREE (XFSSTAT_END_BLOCK_MAPPING+4) - __uint32_t xs_bmbt_lookup; - __uint32_t xs_bmbt_compare; - __uint32_t xs_bmbt_insrec; - __uint32_t xs_bmbt_delrec; -# define XFSSTAT_END_DIRECTORY_OPS (XFSSTAT_END_BLOCK_MAP_BTREE+4) - __uint32_t xs_dir_lookup; - __uint32_t xs_dir_create; - __uint32_t xs_dir_remove; - __uint32_t xs_dir_getdents; -# define XFSSTAT_END_TRANSACTIONS (XFSSTAT_END_DIRECTORY_OPS+3) - __uint32_t xs_trans_sync; - __uint32_t xs_trans_async; - __uint32_t xs_trans_empty; -# define XFSSTAT_END_INODE_OPS (XFSSTAT_END_TRANSACTIONS+7) - __uint32_t xs_ig_attempts; - __uint32_t xs_ig_found; - __uint32_t xs_ig_frecycle; - __uint32_t xs_ig_missed; - __uint32_t xs_ig_dup; - __uint32_t xs_ig_reclaims; - __uint32_t xs_ig_attrchg; -# define XFSSTAT_END_LOG_OPS (XFSSTAT_END_INODE_OPS+5) - __uint32_t xs_log_writes; - __uint32_t xs_log_blocks; - __uint32_t xs_log_noiclogs; - __uint32_t xs_log_force; - __uint32_t xs_log_force_sleep; -# define XFSSTAT_END_TAIL_PUSHING (XFSSTAT_END_LOG_OPS+10) - __uint32_t xs_try_logspace; - __uint32_t xs_sleep_logspace; - __uint32_t xs_push_ail; - __uint32_t xs_push_ail_success; - __uint32_t xs_push_ail_pushbuf; - __uint32_t xs_push_ail_pinned; - __uint32_t xs_push_ail_locked; - __uint32_t xs_push_ail_flushing; - __uint32_t xs_push_ail_restarts; - __uint32_t xs_push_ail_flush; -# define XFSSTAT_END_WRITE_CONVERT (XFSSTAT_END_TAIL_PUSHING+2) - __uint32_t xs_xstrat_quick; - __uint32_t xs_xstrat_split; -# define XFSSTAT_END_READ_WRITE_OPS (XFSSTAT_END_WRITE_CONVERT+2) - __uint32_t xs_write_calls; - __uint32_t xs_read_calls; -# define XFSSTAT_END_ATTRIBUTE_OPS (XFSSTAT_END_READ_WRITE_OPS+4) - __uint32_t xs_attr_get; - __uint32_t xs_attr_set; - __uint32_t xs_attr_remove; - __uint32_t xs_attr_list; -# define XFSSTAT_END_INODE_CLUSTER (XFSSTAT_END_ATTRIBUTE_OPS+3) - __uint32_t xs_iflush_count; - __uint32_t xs_icluster_flushcnt; - __uint32_t xs_icluster_flushinode; -# define XFSSTAT_END_VNODE_OPS (XFSSTAT_END_INODE_CLUSTER+8) - __uint32_t vn_active; /* # vnodes not on free lists */ - __uint32_t vn_alloc; /* # times vn_alloc called */ - __uint32_t vn_get; /* # times vn_get called */ - __uint32_t vn_hold; /* # times vn_hold called */ - __uint32_t vn_rele; /* # times vn_rele called */ - __uint32_t vn_reclaim; /* # times vn_reclaim called */ - __uint32_t vn_remove; /* # times vn_remove called */ - __uint32_t vn_free; /* # times vn_free called */ -#define XFSSTAT_END_BUF (XFSSTAT_END_VNODE_OPS+9) - __uint32_t xb_get; - __uint32_t xb_create; - __uint32_t xb_get_locked; - __uint32_t xb_get_locked_waited; - __uint32_t xb_busy_locked; - __uint32_t xb_miss_locked; - __uint32_t xb_page_retries; - __uint32_t xb_page_found; - __uint32_t xb_get_read; -/* Version 2 btree counters */ -#define XFSSTAT_END_ABTB_V2 (XFSSTAT_END_BUF+15) - __uint32_t xs_abtb_2_lookup; - __uint32_t xs_abtb_2_compare; - __uint32_t xs_abtb_2_insrec; - __uint32_t xs_abtb_2_delrec; - __uint32_t xs_abtb_2_newroot; - __uint32_t xs_abtb_2_killroot; - __uint32_t xs_abtb_2_increment; - __uint32_t xs_abtb_2_decrement; - __uint32_t xs_abtb_2_lshift; - __uint32_t xs_abtb_2_rshift; - __uint32_t xs_abtb_2_split; - __uint32_t xs_abtb_2_join; - __uint32_t xs_abtb_2_alloc; - __uint32_t xs_abtb_2_free; - __uint32_t xs_abtb_2_moves; -#define XFSSTAT_END_ABTC_V2 (XFSSTAT_END_ABTB_V2+15) - __uint32_t xs_abtc_2_lookup; - __uint32_t xs_abtc_2_compare; - __uint32_t xs_abtc_2_insrec; - __uint32_t xs_abtc_2_delrec; - __uint32_t xs_abtc_2_newroot; - __uint32_t xs_abtc_2_killroot; - __uint32_t xs_abtc_2_increment; - __uint32_t xs_abtc_2_decrement; - __uint32_t xs_abtc_2_lshift; - __uint32_t xs_abtc_2_rshift; - __uint32_t xs_abtc_2_split; - __uint32_t xs_abtc_2_join; - __uint32_t xs_abtc_2_alloc; - __uint32_t xs_abtc_2_free; - __uint32_t xs_abtc_2_moves; -#define XFSSTAT_END_BMBT_V2 (XFSSTAT_END_ABTC_V2+15) - __uint32_t xs_bmbt_2_lookup; - __uint32_t xs_bmbt_2_compare; - __uint32_t xs_bmbt_2_insrec; - __uint32_t xs_bmbt_2_delrec; - __uint32_t xs_bmbt_2_newroot; - __uint32_t xs_bmbt_2_killroot; - __uint32_t xs_bmbt_2_increment; - __uint32_t xs_bmbt_2_decrement; - __uint32_t xs_bmbt_2_lshift; - __uint32_t xs_bmbt_2_rshift; - __uint32_t xs_bmbt_2_split; - __uint32_t xs_bmbt_2_join; - __uint32_t xs_bmbt_2_alloc; - __uint32_t xs_bmbt_2_free; - __uint32_t xs_bmbt_2_moves; -#define XFSSTAT_END_IBT_V2 (XFSSTAT_END_BMBT_V2+15) - __uint32_t xs_ibt_2_lookup; - __uint32_t xs_ibt_2_compare; - __uint32_t xs_ibt_2_insrec; - __uint32_t xs_ibt_2_delrec; - __uint32_t xs_ibt_2_newroot; - __uint32_t xs_ibt_2_killroot; - __uint32_t xs_ibt_2_increment; - __uint32_t xs_ibt_2_decrement; - __uint32_t xs_ibt_2_lshift; - __uint32_t xs_ibt_2_rshift; - __uint32_t xs_ibt_2_split; - __uint32_t xs_ibt_2_join; - __uint32_t xs_ibt_2_alloc; - __uint32_t xs_ibt_2_free; - __uint32_t xs_ibt_2_moves; -/* Extra precision counters */ - __uint64_t xs_xstrat_bytes; - __uint64_t xs_write_bytes; - __uint64_t xs_read_bytes; -}; - -DECLARE_PER_CPU(struct xfsstats, xfsstats); - -/* - * We don't disable preempt, not too worried about poking the - * wrong CPU's stat for now (also aggregated before reporting). - */ -#define XFS_STATS_INC(v) (per_cpu(xfsstats, current_cpu()).v++) -#define XFS_STATS_DEC(v) (per_cpu(xfsstats, current_cpu()).v--) -#define XFS_STATS_ADD(v, inc) (per_cpu(xfsstats, current_cpu()).v += (inc)) - -extern int xfs_init_procfs(void); -extern void xfs_cleanup_procfs(void); - - -#else /* !CONFIG_PROC_FS */ - -# define XFS_STATS_INC(count) -# define XFS_STATS_DEC(count) -# define XFS_STATS_ADD(count, inc) - -static inline int xfs_init_procfs(void) -{ - return 0; -} - -static inline void xfs_cleanup_procfs(void) -{ -} - -#endif /* !CONFIG_PROC_FS */ - -#endif /* __XFS_STATS_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c deleted file mode 100644 index 9a72dda58bd0..000000000000 --- a/fs/xfs/linux-2.6/xfs_super.c +++ /dev/null @@ -1,1773 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "xfs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_btree.h" -#include "xfs_ialloc.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_itable.h" -#include "xfs_fsops.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_vnodeops.h" -#include "xfs_log_priv.h" -#include "xfs_trans_priv.h" -#include "xfs_filestream.h" -#include "xfs_da_btree.h" -#include "xfs_extfree_item.h" -#include "xfs_mru_cache.h" -#include "xfs_inode_item.h" -#include "xfs_sync.h" -#include "xfs_trace.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -static const struct super_operations xfs_super_operations; -static kmem_zone_t *xfs_ioend_zone; -mempool_t *xfs_ioend_pool; - -#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ -#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ -#define MNTOPT_LOGDEV "logdev" /* log device */ -#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ -#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ -#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ -#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ -#define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ -#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ -#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ -#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ -#define MNTOPT_MTPT "mtpt" /* filesystem mount point */ -#define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ -#define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ -#define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ -#define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ -#define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ -#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ -#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and - * unwritten extent conversion */ -#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ -#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ -#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ -#define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ -#define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ -#define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes - * in stat(). */ -#define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ -#define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ -#define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ -#define MNTOPT_QUOTA "quota" /* disk quotas (user) */ -#define MNTOPT_NOQUOTA "noquota" /* no quotas */ -#define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ -#define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ -#define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ -#define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ -#define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ -#define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ -#define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ -#define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ -#define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ -#define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ -#define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ -#define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ -#define MNTOPT_DISCARD "discard" /* Discard unused blocks */ -#define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ - -/* - * Table driven mount option parser. - * - * Currently only used for remount, but it will be used for mount - * in the future, too. - */ -enum { - Opt_barrier, Opt_nobarrier, Opt_err -}; - -static const match_table_t tokens = { - {Opt_barrier, "barrier"}, - {Opt_nobarrier, "nobarrier"}, - {Opt_err, NULL} -}; - - -STATIC unsigned long -suffix_strtoul(char *s, char **endp, unsigned int base) -{ - int last, shift_left_factor = 0; - char *value = s; - - last = strlen(value) - 1; - if (value[last] == 'K' || value[last] == 'k') { - shift_left_factor = 10; - value[last] = '\0'; - } - if (value[last] == 'M' || value[last] == 'm') { - shift_left_factor = 20; - value[last] = '\0'; - } - if (value[last] == 'G' || value[last] == 'g') { - shift_left_factor = 30; - value[last] = '\0'; - } - - return simple_strtoul((const char *)s, endp, base) << shift_left_factor; -} - -/* - * This function fills in xfs_mount_t fields based on mount args. - * Note: the superblock has _not_ yet been read in. - * - * Note that this function leaks the various device name allocations on - * failure. The caller takes care of them. - */ -STATIC int -xfs_parseargs( - struct xfs_mount *mp, - char *options) -{ - struct super_block *sb = mp->m_super; - char *this_char, *value, *eov; - int dsunit = 0; - int dswidth = 0; - int iosize = 0; - __uint8_t iosizelog = 0; - - /* - * set up the mount name first so all the errors will refer to the - * correct device. - */ - mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); - if (!mp->m_fsname) - return ENOMEM; - mp->m_fsname_len = strlen(mp->m_fsname) + 1; - - /* - * Copy binary VFS mount flags we are interested in. - */ - if (sb->s_flags & MS_RDONLY) - mp->m_flags |= XFS_MOUNT_RDONLY; - if (sb->s_flags & MS_DIRSYNC) - mp->m_flags |= XFS_MOUNT_DIRSYNC; - if (sb->s_flags & MS_SYNCHRONOUS) - mp->m_flags |= XFS_MOUNT_WSYNC; - - /* - * Set some default flags that could be cleared by the mount option - * parsing. - */ - mp->m_flags |= XFS_MOUNT_BARRIER; - mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; - mp->m_flags |= XFS_MOUNT_SMALL_INUMS; - mp->m_flags |= XFS_MOUNT_DELAYLOG; - - /* - * These can be overridden by the mount option parsing. - */ - mp->m_logbufs = -1; - mp->m_logbsize = -1; - - if (!options) - goto done; - - while ((this_char = strsep(&options, ",")) != NULL) { - if (!*this_char) - continue; - if ((value = strchr(this_char, '=')) != NULL) - *value++ = 0; - - if (!strcmp(this_char, MNTOPT_LOGBUFS)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - mp->m_logbufs = simple_strtoul(value, &eov, 10); - } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - mp->m_logbsize = suffix_strtoul(value, &eov, 10); - } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); - if (!mp->m_logname) - return ENOMEM; - } else if (!strcmp(this_char, MNTOPT_MTPT)) { - xfs_warn(mp, "%s option not allowed on this system", - this_char); - return EINVAL; - } else if (!strcmp(this_char, MNTOPT_RTDEV)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); - if (!mp->m_rtname) - return ENOMEM; - } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - iosize = simple_strtoul(value, &eov, 10); - iosizelog = ffs(iosize) - 1; - } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - iosize = suffix_strtoul(value, &eov, 10); - iosizelog = ffs(iosize) - 1; - } else if (!strcmp(this_char, MNTOPT_GRPID) || - !strcmp(this_char, MNTOPT_BSDGROUPS)) { - mp->m_flags |= XFS_MOUNT_GRPID; - } else if (!strcmp(this_char, MNTOPT_NOGRPID) || - !strcmp(this_char, MNTOPT_SYSVGROUPS)) { - mp->m_flags &= ~XFS_MOUNT_GRPID; - } else if (!strcmp(this_char, MNTOPT_WSYNC)) { - mp->m_flags |= XFS_MOUNT_WSYNC; - } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { - mp->m_flags |= XFS_MOUNT_NORECOVERY; - } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { - mp->m_flags |= XFS_MOUNT_NOALIGN; - } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { - mp->m_flags |= XFS_MOUNT_SWALLOC; - } else if (!strcmp(this_char, MNTOPT_SUNIT)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - dsunit = simple_strtoul(value, &eov, 10); - } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { - if (!value || !*value) { - xfs_warn(mp, "%s option requires an argument", - this_char); - return EINVAL; - } - dswidth = simple_strtoul(value, &eov, 10); - } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { - mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; -#if !XFS_BIG_INUMS - xfs_warn(mp, "%s option not allowed on this system", - this_char); - return EINVAL; -#endif - } else if (!strcmp(this_char, MNTOPT_NOUUID)) { - mp->m_flags |= XFS_MOUNT_NOUUID; - } else if (!strcmp(this_char, MNTOPT_BARRIER)) { - mp->m_flags |= XFS_MOUNT_BARRIER; - } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { - mp->m_flags &= ~XFS_MOUNT_BARRIER; - } else if (!strcmp(this_char, MNTOPT_IKEEP)) { - mp->m_flags |= XFS_MOUNT_IKEEP; - } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { - mp->m_flags &= ~XFS_MOUNT_IKEEP; - } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { - mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; - } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { - mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; - } else if (!strcmp(this_char, MNTOPT_ATTR2)) { - mp->m_flags |= XFS_MOUNT_ATTR2; - } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { - mp->m_flags &= ~XFS_MOUNT_ATTR2; - mp->m_flags |= XFS_MOUNT_NOATTR2; - } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { - mp->m_flags |= XFS_MOUNT_FILESTREAMS; - } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { - mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | - XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | - XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | - XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); - } else if (!strcmp(this_char, MNTOPT_QUOTA) || - !strcmp(this_char, MNTOPT_UQUOTA) || - !strcmp(this_char, MNTOPT_USRQUOTA)) { - mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | - XFS_UQUOTA_ENFD); - } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || - !strcmp(this_char, MNTOPT_UQUOTANOENF)) { - mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); - mp->m_qflags &= ~XFS_UQUOTA_ENFD; - } else if (!strcmp(this_char, MNTOPT_PQUOTA) || - !strcmp(this_char, MNTOPT_PRJQUOTA)) { - mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | - XFS_OQUOTA_ENFD); - } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { - mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); - mp->m_qflags &= ~XFS_OQUOTA_ENFD; - } else if (!strcmp(this_char, MNTOPT_GQUOTA) || - !strcmp(this_char, MNTOPT_GRPQUOTA)) { - mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | - XFS_OQUOTA_ENFD); - } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { - mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); - mp->m_qflags &= ~XFS_OQUOTA_ENFD; - } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { - mp->m_flags |= XFS_MOUNT_DELAYLOG; - } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { - mp->m_flags &= ~XFS_MOUNT_DELAYLOG; - } else if (!strcmp(this_char, MNTOPT_DISCARD)) { - mp->m_flags |= XFS_MOUNT_DISCARD; - } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { - mp->m_flags &= ~XFS_MOUNT_DISCARD; - } else if (!strcmp(this_char, "ihashsize")) { - xfs_warn(mp, - "ihashsize no longer used, option is deprecated."); - } else if (!strcmp(this_char, "osyncisdsync")) { - xfs_warn(mp, - "osyncisdsync has no effect, option is deprecated."); - } else if (!strcmp(this_char, "osyncisosync")) { - xfs_warn(mp, - "osyncisosync has no effect, option is deprecated."); - } else if (!strcmp(this_char, "irixsgid")) { - xfs_warn(mp, - "irixsgid is now a sysctl(2) variable, option is deprecated."); - } else { - xfs_warn(mp, "unknown mount option [%s].", this_char); - return EINVAL; - } - } - - /* - * no recovery flag requires a read-only mount - */ - if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && - !(mp->m_flags & XFS_MOUNT_RDONLY)) { - xfs_warn(mp, "no-recovery mounts must be read-only."); - return EINVAL; - } - - if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { - xfs_warn(mp, - "sunit and swidth options incompatible with the noalign option"); - return EINVAL; - } - - if ((mp->m_flags & XFS_MOUNT_DISCARD) && - !(mp->m_flags & XFS_MOUNT_DELAYLOG)) { - xfs_warn(mp, - "the discard option is incompatible with the nodelaylog option"); - return EINVAL; - } - -#ifndef CONFIG_XFS_QUOTA - if (XFS_IS_QUOTA_RUNNING(mp)) { - xfs_warn(mp, "quota support not available in this kernel."); - return EINVAL; - } -#endif - - if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && - (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { - xfs_warn(mp, "cannot mount with both project and group quota"); - return EINVAL; - } - - if ((dsunit && !dswidth) || (!dsunit && dswidth)) { - xfs_warn(mp, "sunit and swidth must be specified together"); - return EINVAL; - } - - if (dsunit && (dswidth % dsunit != 0)) { - xfs_warn(mp, - "stripe width (%d) must be a multiple of the stripe unit (%d)", - dswidth, dsunit); - return EINVAL; - } - -done: - if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { - /* - * At this point the superblock has not been read - * in, therefore we do not know the block size. - * Before the mount call ends we will convert - * these to FSBs. - */ - if (dsunit) { - mp->m_dalign = dsunit; - mp->m_flags |= XFS_MOUNT_RETERR; - } - - if (dswidth) - mp->m_swidth = dswidth; - } - - if (mp->m_logbufs != -1 && - mp->m_logbufs != 0 && - (mp->m_logbufs < XLOG_MIN_ICLOGS || - mp->m_logbufs > XLOG_MAX_ICLOGS)) { - xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", - mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); - return XFS_ERROR(EINVAL); - } - if (mp->m_logbsize != -1 && - mp->m_logbsize != 0 && - (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || - mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || - !is_power_of_2(mp->m_logbsize))) { - xfs_warn(mp, - "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", - mp->m_logbsize); - return XFS_ERROR(EINVAL); - } - - if (iosizelog) { - if (iosizelog > XFS_MAX_IO_LOG || - iosizelog < XFS_MIN_IO_LOG) { - xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", - iosizelog, XFS_MIN_IO_LOG, - XFS_MAX_IO_LOG); - return XFS_ERROR(EINVAL); - } - - mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; - mp->m_readio_log = iosizelog; - mp->m_writeio_log = iosizelog; - } - - return 0; -} - -struct proc_xfs_info { - int flag; - char *str; -}; - -STATIC int -xfs_showargs( - struct xfs_mount *mp, - struct seq_file *m) -{ - static struct proc_xfs_info xfs_info_set[] = { - /* the few simple ones we can get from the mount struct */ - { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, - { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, - { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, - { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, - { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, - { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, - { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, - { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, - { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, - { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, - { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, - { 0, NULL } - }; - static struct proc_xfs_info xfs_info_unset[] = { - /* the few simple ones we can get from the mount struct */ - { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, - { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, - { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, - { 0, NULL } - }; - struct proc_xfs_info *xfs_infop; - - for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { - if (mp->m_flags & xfs_infop->flag) - seq_puts(m, xfs_infop->str); - } - for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { - if (!(mp->m_flags & xfs_infop->flag)) - seq_puts(m, xfs_infop->str); - } - - if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) - seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", - (int)(1 << mp->m_writeio_log) >> 10); - - if (mp->m_logbufs > 0) - seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); - if (mp->m_logbsize > 0) - seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); - - if (mp->m_logname) - seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); - if (mp->m_rtname) - seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); - - if (mp->m_dalign > 0) - seq_printf(m, "," MNTOPT_SUNIT "=%d", - (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); - if (mp->m_swidth > 0) - seq_printf(m, "," MNTOPT_SWIDTH "=%d", - (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); - - if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) - seq_puts(m, "," MNTOPT_USRQUOTA); - else if (mp->m_qflags & XFS_UQUOTA_ACCT) - seq_puts(m, "," MNTOPT_UQUOTANOENF); - - /* Either project or group quotas can be active, not both */ - - if (mp->m_qflags & XFS_PQUOTA_ACCT) { - if (mp->m_qflags & XFS_OQUOTA_ENFD) - seq_puts(m, "," MNTOPT_PRJQUOTA); - else - seq_puts(m, "," MNTOPT_PQUOTANOENF); - } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { - if (mp->m_qflags & XFS_OQUOTA_ENFD) - seq_puts(m, "," MNTOPT_GRPQUOTA); - else - seq_puts(m, "," MNTOPT_GQUOTANOENF); - } - - if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) - seq_puts(m, "," MNTOPT_NOQUOTA); - - return 0; -} -__uint64_t -xfs_max_file_offset( - unsigned int blockshift) -{ - unsigned int pagefactor = 1; - unsigned int bitshift = BITS_PER_LONG - 1; - - /* Figure out maximum filesize, on Linux this can depend on - * the filesystem blocksize (on 32 bit platforms). - * __block_write_begin does this in an [unsigned] long... - * page->index << (PAGE_CACHE_SHIFT - bbits) - * So, for page sized blocks (4K on 32 bit platforms), - * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is - * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) - * but for smaller blocksizes it is less (bbits = log2 bsize). - * Note1: get_block_t takes a long (implicit cast from above) - * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch - * can optionally convert the [unsigned] long from above into - * an [unsigned] long long. - */ - -#if BITS_PER_LONG == 32 -# if defined(CONFIG_LBDAF) - ASSERT(sizeof(sector_t) == 8); - pagefactor = PAGE_CACHE_SIZE; - bitshift = BITS_PER_LONG; -# else - pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); -# endif -#endif - - return (((__uint64_t)pagefactor) << bitshift) - 1; -} - -STATIC int -xfs_blkdev_get( - xfs_mount_t *mp, - const char *name, - struct block_device **bdevp) -{ - int error = 0; - - *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, - mp); - if (IS_ERR(*bdevp)) { - error = PTR_ERR(*bdevp); - xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); - } - - return -error; -} - -STATIC void -xfs_blkdev_put( - struct block_device *bdev) -{ - if (bdev) - blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); -} - -void -xfs_blkdev_issue_flush( - xfs_buftarg_t *buftarg) -{ - blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL); -} - -STATIC void -xfs_close_devices( - struct xfs_mount *mp) -{ - if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { - struct block_device *logdev = mp->m_logdev_targp->bt_bdev; - xfs_free_buftarg(mp, mp->m_logdev_targp); - xfs_blkdev_put(logdev); - } - if (mp->m_rtdev_targp) { - struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; - xfs_free_buftarg(mp, mp->m_rtdev_targp); - xfs_blkdev_put(rtdev); - } - xfs_free_buftarg(mp, mp->m_ddev_targp); -} - -/* - * The file system configurations are: - * (1) device (partition) with data and internal log - * (2) logical volume with data and log subvolumes. - * (3) logical volume with data, log, and realtime subvolumes. - * - * We only have to handle opening the log and realtime volumes here if - * they are present. The data subvolume has already been opened by - * get_sb_bdev() and is stored in sb->s_bdev. - */ -STATIC int -xfs_open_devices( - struct xfs_mount *mp) -{ - struct block_device *ddev = mp->m_super->s_bdev; - struct block_device *logdev = NULL, *rtdev = NULL; - int error; - - /* - * Open real time and log devices - order is important. - */ - if (mp->m_logname) { - error = xfs_blkdev_get(mp, mp->m_logname, &logdev); - if (error) - goto out; - } - - if (mp->m_rtname) { - error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); - if (error) - goto out_close_logdev; - - if (rtdev == ddev || rtdev == logdev) { - xfs_warn(mp, - "Cannot mount filesystem with identical rtdev and ddev/logdev."); - error = EINVAL; - goto out_close_rtdev; - } - } - - /* - * Setup xfs_mount buffer target pointers - */ - error = ENOMEM; - mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); - if (!mp->m_ddev_targp) - goto out_close_rtdev; - - if (rtdev) { - mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, - mp->m_fsname); - if (!mp->m_rtdev_targp) - goto out_free_ddev_targ; - } - - if (logdev && logdev != ddev) { - mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, - mp->m_fsname); - if (!mp->m_logdev_targp) - goto out_free_rtdev_targ; - } else { - mp->m_logdev_targp = mp->m_ddev_targp; - } - - return 0; - - out_free_rtdev_targ: - if (mp->m_rtdev_targp) - xfs_free_buftarg(mp, mp->m_rtdev_targp); - out_free_ddev_targ: - xfs_free_buftarg(mp, mp->m_ddev_targp); - out_close_rtdev: - if (rtdev) - xfs_blkdev_put(rtdev); - out_close_logdev: - if (logdev && logdev != ddev) - xfs_blkdev_put(logdev); - out: - return error; -} - -/* - * Setup xfs_mount buffer target pointers based on superblock - */ -STATIC int -xfs_setup_devices( - struct xfs_mount *mp) -{ - int error; - - error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, - mp->m_sb.sb_sectsize); - if (error) - return error; - - if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { - unsigned int log_sector_size = BBSIZE; - - if (xfs_sb_version_hassector(&mp->m_sb)) - log_sector_size = mp->m_sb.sb_logsectsize; - error = xfs_setsize_buftarg(mp->m_logdev_targp, - mp->m_sb.sb_blocksize, - log_sector_size); - if (error) - return error; - } - if (mp->m_rtdev_targp) { - error = xfs_setsize_buftarg(mp->m_rtdev_targp, - mp->m_sb.sb_blocksize, - mp->m_sb.sb_sectsize); - if (error) - return error; - } - - return 0; -} - -/* Catch misguided souls that try to use this interface on XFS */ -STATIC struct inode * -xfs_fs_alloc_inode( - struct super_block *sb) -{ - BUG(); - return NULL; -} - -/* - * Now that the generic code is guaranteed not to be accessing - * the linux inode, we can reclaim the inode. - */ -STATIC void -xfs_fs_destroy_inode( - struct inode *inode) -{ - struct xfs_inode *ip = XFS_I(inode); - - trace_xfs_destroy_inode(ip); - - XFS_STATS_INC(vn_reclaim); - - /* bad inode, get out here ASAP */ - if (is_bad_inode(inode)) - goto out_reclaim; - - xfs_ioend_wait(ip); - - ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); - - /* - * We should never get here with one of the reclaim flags already set. - */ - ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); - ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); - - /* - * We always use background reclaim here because even if the - * inode is clean, it still may be under IO and hence we have - * to take the flush lock. The background reclaim path handles - * this more efficiently than we can here, so simply let background - * reclaim tear down all inodes. - */ -out_reclaim: - xfs_inode_set_reclaim_tag(ip); -} - -/* - * Slab object creation initialisation for the XFS inode. - * This covers only the idempotent fields in the XFS inode; - * all other fields need to be initialised on allocation - * from the slab. This avoids the need to repeatedly initialise - * fields in the xfs inode that left in the initialise state - * when freeing the inode. - */ -STATIC void -xfs_fs_inode_init_once( - void *inode) -{ - struct xfs_inode *ip = inode; - - memset(ip, 0, sizeof(struct xfs_inode)); - - /* vfs inode */ - inode_init_once(VFS_I(ip)); - - /* xfs inode */ - atomic_set(&ip->i_iocount, 0); - atomic_set(&ip->i_pincount, 0); - spin_lock_init(&ip->i_flags_lock); - init_waitqueue_head(&ip->i_ipin_wait); - /* - * Because we want to use a counting completion, complete - * the flush completion once to allow a single access to - * the flush completion without blocking. - */ - init_completion(&ip->i_flush); - complete(&ip->i_flush); - - mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, - "xfsino", ip->i_ino); -} - -/* - * Dirty the XFS inode when mark_inode_dirty_sync() is called so that - * we catch unlogged VFS level updates to the inode. - * - * We need the barrier() to maintain correct ordering between unlogged - * updates and the transaction commit code that clears the i_update_core - * field. This requires all updates to be completed before marking the - * inode dirty. - */ -STATIC void -xfs_fs_dirty_inode( - struct inode *inode, - int flags) -{ - barrier(); - XFS_I(inode)->i_update_core = 1; -} - -STATIC int -xfs_log_inode( - struct xfs_inode *ip) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_trans *tp; - int error; - - xfs_iunlock(ip, XFS_ILOCK_SHARED); - tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); - error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); - - if (error) { - xfs_trans_cancel(tp, 0); - /* we need to return with the lock hold shared */ - xfs_ilock(ip, XFS_ILOCK_SHARED); - return error; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - - /* - * Note - it's possible that we might have pushed ourselves out of the - * way during trans_reserve which would flush the inode. But there's - * no guarantee that the inode buffer has actually gone out yet (it's - * delwri). Plus the buffer could be pinned anyway if it's part of - * an inode in another recent transaction. So we play it safe and - * fire off the transaction anyway. - */ - xfs_trans_ijoin(tp, ip); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - error = xfs_trans_commit(tp, 0); - xfs_ilock_demote(ip, XFS_ILOCK_EXCL); - - return error; -} - -STATIC int -xfs_fs_write_inode( - struct inode *inode, - struct writeback_control *wbc) -{ - struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - int error = EAGAIN; - - trace_xfs_write_inode(ip); - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - if (wbc->sync_mode == WB_SYNC_ALL) { - /* - * Make sure the inode has made it it into the log. Instead - * of forcing it all the way to stable storage using a - * synchronous transaction we let the log force inside the - * ->sync_fs call do that for thus, which reduces the number - * of synchronous log foces dramatically. - */ - xfs_ioend_wait(ip); - xfs_ilock(ip, XFS_ILOCK_SHARED); - if (ip->i_update_core) { - error = xfs_log_inode(ip); - if (error) - goto out_unlock; - } - } else { - /* - * We make this non-blocking if the inode is contended, return - * EAGAIN to indicate to the caller that they did not succeed. - * This prevents the flush path from blocking on inodes inside - * another operation right now, they get caught later by - * xfs_sync. - */ - if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) - goto out; - - if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) - goto out_unlock; - - /* - * Now we have the flush lock and the inode is not pinned, we - * can check if the inode is really clean as we know that - * there are no pending transaction completions, it is not - * waiting on the delayed write queue and there is no IO in - * progress. - */ - if (xfs_inode_clean(ip)) { - xfs_ifunlock(ip); - error = 0; - goto out_unlock; - } - error = xfs_iflush(ip, SYNC_TRYLOCK); - } - - out_unlock: - xfs_iunlock(ip, XFS_ILOCK_SHARED); - out: - /* - * if we failed to write out the inode then mark - * it dirty again so we'll try again later. - */ - if (error) - xfs_mark_inode_dirty_sync(ip); - return -error; -} - -STATIC void -xfs_fs_evict_inode( - struct inode *inode) -{ - xfs_inode_t *ip = XFS_I(inode); - - trace_xfs_evict_inode(ip); - - truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); - XFS_STATS_INC(vn_rele); - XFS_STATS_INC(vn_remove); - XFS_STATS_DEC(vn_active); - - /* - * The iolock is used by the file system to coordinate reads, - * writes, and block truncates. Up to this point the lock - * protected concurrent accesses by users of the inode. But - * from here forward we're doing some final processing of the - * inode because we're done with it, and although we reuse the - * iolock for protection it is really a distinct lock class - * (in the lockdep sense) from before. To keep lockdep happy - * (and basically indicate what we are doing), we explicitly - * re-init the iolock here. - */ - ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); - mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); - lockdep_set_class_and_name(&ip->i_iolock.mr_lock, - &xfs_iolock_reclaimable, "xfs_iolock_reclaimable"); - - xfs_inactive(ip); -} - -STATIC void -xfs_free_fsname( - struct xfs_mount *mp) -{ - kfree(mp->m_fsname); - kfree(mp->m_rtname); - kfree(mp->m_logname); -} - -STATIC void -xfs_fs_put_super( - struct super_block *sb) -{ - struct xfs_mount *mp = XFS_M(sb); - - xfs_syncd_stop(mp); - - /* - * Blow away any referenced inode in the filestreams cache. - * This can and will cause log traffic as inodes go inactive - * here. - */ - xfs_filestream_unmount(mp); - - XFS_bflush(mp->m_ddev_targp); - - xfs_unmountfs(mp); - xfs_freesb(mp); - xfs_icsb_destroy_counters(mp); - xfs_close_devices(mp); - xfs_free_fsname(mp); - kfree(mp); -} - -STATIC int -xfs_fs_sync_fs( - struct super_block *sb, - int wait) -{ - struct xfs_mount *mp = XFS_M(sb); - int error; - - /* - * Not much we can do for the first async pass. Writing out the - * superblock would be counter-productive as we are going to redirty - * when writing out other data and metadata (and writing out a single - * block is quite fast anyway). - * - * Try to asynchronously kick off quota syncing at least. - */ - if (!wait) { - xfs_qm_sync(mp, SYNC_TRYLOCK); - return 0; - } - - error = xfs_quiesce_data(mp); - if (error) - return -error; - - if (laptop_mode) { - /* - * The disk must be active because we're syncing. - * We schedule xfssyncd now (now that the disk is - * active) instead of later (when it might not be). - */ - flush_delayed_work_sync(&mp->m_sync_work); - } - - return 0; -} - -STATIC int -xfs_fs_statfs( - struct dentry *dentry, - struct kstatfs *statp) -{ - struct xfs_mount *mp = XFS_M(dentry->d_sb); - xfs_sb_t *sbp = &mp->m_sb; - struct xfs_inode *ip = XFS_I(dentry->d_inode); - __uint64_t fakeinos, id; - xfs_extlen_t lsize; - __int64_t ffree; - - statp->f_type = XFS_SB_MAGIC; - statp->f_namelen = MAXNAMELEN - 1; - - id = huge_encode_dev(mp->m_ddev_targp->bt_dev); - statp->f_fsid.val[0] = (u32)id; - statp->f_fsid.val[1] = (u32)(id >> 32); - - xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); - - spin_lock(&mp->m_sb_lock); - statp->f_bsize = sbp->sb_blocksize; - lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; - statp->f_blocks = sbp->sb_dblocks - lsize; - statp->f_bfree = statp->f_bavail = - sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); - fakeinos = statp->f_bfree << sbp->sb_inopblog; - statp->f_files = - MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); - if (mp->m_maxicount) - statp->f_files = min_t(typeof(statp->f_files), - statp->f_files, - mp->m_maxicount); - - /* make sure statp->f_ffree does not underflow */ - ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); - statp->f_ffree = max_t(__int64_t, ffree, 0); - - spin_unlock(&mp->m_sb_lock); - - if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || - ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == - (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) - xfs_qm_statvfs(ip, statp); - return 0; -} - -STATIC void -xfs_save_resvblks(struct xfs_mount *mp) -{ - __uint64_t resblks = 0; - - mp->m_resblks_save = mp->m_resblks; - xfs_reserve_blocks(mp, &resblks, NULL); -} - -STATIC void -xfs_restore_resvblks(struct xfs_mount *mp) -{ - __uint64_t resblks; - - if (mp->m_resblks_save) { - resblks = mp->m_resblks_save; - mp->m_resblks_save = 0; - } else - resblks = xfs_default_resblks(mp); - - xfs_reserve_blocks(mp, &resblks, NULL); -} - -STATIC int -xfs_fs_remount( - struct super_block *sb, - int *flags, - char *options) -{ - struct xfs_mount *mp = XFS_M(sb); - substring_t args[MAX_OPT_ARGS]; - char *p; - int error; - - while ((p = strsep(&options, ",")) != NULL) { - int token; - - if (!*p) - continue; - - token = match_token(p, tokens, args); - switch (token) { - case Opt_barrier: - mp->m_flags |= XFS_MOUNT_BARRIER; - break; - case Opt_nobarrier: - mp->m_flags &= ~XFS_MOUNT_BARRIER; - break; - default: - /* - * Logically we would return an error here to prevent - * users from believing they might have changed - * mount options using remount which can't be changed. - * - * But unfortunately mount(8) adds all options from - * mtab and fstab to the mount arguments in some cases - * so we can't blindly reject options, but have to - * check for each specified option if it actually - * differs from the currently set option and only - * reject it if that's the case. - * - * Until that is implemented we return success for - * every remount request, and silently ignore all - * options that we can't actually change. - */ -#if 0 - xfs_info(mp, - "mount option \"%s\" not supported for remount\n", p); - return -EINVAL; -#else - break; -#endif - } - } - - /* ro -> rw */ - if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { - mp->m_flags &= ~XFS_MOUNT_RDONLY; - - /* - * If this is the first remount to writeable state we - * might have some superblock changes to update. - */ - if (mp->m_update_flags) { - error = xfs_mount_log_sb(mp, mp->m_update_flags); - if (error) { - xfs_warn(mp, "failed to write sb changes"); - return error; - } - mp->m_update_flags = 0; - } - - /* - * Fill out the reserve pool if it is empty. Use the stashed - * value if it is non-zero, otherwise go with the default. - */ - xfs_restore_resvblks(mp); - } - - /* rw -> ro */ - if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { - /* - * After we have synced the data but before we sync the - * metadata, we need to free up the reserve block pool so that - * the used block count in the superblock on disk is correct at - * the end of the remount. Stash the current reserve pool size - * so that if we get remounted rw, we can return it to the same - * size. - */ - - xfs_quiesce_data(mp); - xfs_save_resvblks(mp); - xfs_quiesce_attr(mp); - mp->m_flags |= XFS_MOUNT_RDONLY; - } - - return 0; -} - -/* - * Second stage of a freeze. The data is already frozen so we only - * need to take care of the metadata. Once that's done write a dummy - * record to dirty the log in case of a crash while frozen. - */ -STATIC int -xfs_fs_freeze( - struct super_block *sb) -{ - struct xfs_mount *mp = XFS_M(sb); - - xfs_save_resvblks(mp); - xfs_quiesce_attr(mp); - return -xfs_fs_log_dummy(mp); -} - -STATIC int -xfs_fs_unfreeze( - struct super_block *sb) -{ - struct xfs_mount *mp = XFS_M(sb); - - xfs_restore_resvblks(mp); - return 0; -} - -STATIC int -xfs_fs_show_options( - struct seq_file *m, - struct vfsmount *mnt) -{ - return -xfs_showargs(XFS_M(mnt->mnt_sb), m); -} - -/* - * This function fills in xfs_mount_t fields based on mount args. - * Note: the superblock _has_ now been read in. - */ -STATIC int -xfs_finish_flags( - struct xfs_mount *mp) -{ - int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); - - /* Fail a mount where the logbuf is smaller than the log stripe */ - if (xfs_sb_version_haslogv2(&mp->m_sb)) { - if (mp->m_logbsize <= 0 && - mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { - mp->m_logbsize = mp->m_sb.sb_logsunit; - } else if (mp->m_logbsize > 0 && - mp->m_logbsize < mp->m_sb.sb_logsunit) { - xfs_warn(mp, - "logbuf size must be greater than or equal to log stripe size"); - return XFS_ERROR(EINVAL); - } - } else { - /* Fail a mount if the logbuf is larger than 32K */ - if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { - xfs_warn(mp, - "logbuf size for version 1 logs must be 16K or 32K"); - return XFS_ERROR(EINVAL); - } - } - - /* - * mkfs'ed attr2 will turn on attr2 mount unless explicitly - * told by noattr2 to turn it off - */ - if (xfs_sb_version_hasattr2(&mp->m_sb) && - !(mp->m_flags & XFS_MOUNT_NOATTR2)) - mp->m_flags |= XFS_MOUNT_ATTR2; - - /* - * prohibit r/w mounts of read-only filesystems - */ - if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { - xfs_warn(mp, - "cannot mount a read-only filesystem as read-write"); - return XFS_ERROR(EROFS); - } - - return 0; -} - -STATIC int -xfs_fs_fill_super( - struct super_block *sb, - void *data, - int silent) -{ - struct inode *root; - struct xfs_mount *mp = NULL; - int flags = 0, error = ENOMEM; - - mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); - if (!mp) - goto out; - - spin_lock_init(&mp->m_sb_lock); - mutex_init(&mp->m_growlock); - atomic_set(&mp->m_active_trans, 0); - - mp->m_super = sb; - sb->s_fs_info = mp; - - error = xfs_parseargs(mp, (char *)data); - if (error) - goto out_free_fsname; - - sb_min_blocksize(sb, BBSIZE); - sb->s_xattr = xfs_xattr_handlers; - sb->s_export_op = &xfs_export_operations; -#ifdef CONFIG_XFS_QUOTA - sb->s_qcop = &xfs_quotactl_operations; -#endif - sb->s_op = &xfs_super_operations; - - if (silent) - flags |= XFS_MFSI_QUIET; - - error = xfs_open_devices(mp); - if (error) - goto out_free_fsname; - - error = xfs_icsb_init_counters(mp); - if (error) - goto out_close_devices; - - error = xfs_readsb(mp, flags); - if (error) - goto out_destroy_counters; - - error = xfs_finish_flags(mp); - if (error) - goto out_free_sb; - - error = xfs_setup_devices(mp); - if (error) - goto out_free_sb; - - error = xfs_filestream_mount(mp); - if (error) - goto out_free_sb; - - /* - * we must configure the block size in the superblock before we run the - * full mount process as the mount process can lookup and cache inodes. - * For the same reason we must also initialise the syncd and register - * the inode cache shrinker so that inodes can be reclaimed during - * operations like a quotacheck that iterate all inodes in the - * filesystem. - */ - sb->s_magic = XFS_SB_MAGIC; - sb->s_blocksize = mp->m_sb.sb_blocksize; - sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; - sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); - sb->s_time_gran = 1; - set_posix_acl_flag(sb); - - error = xfs_mountfs(mp); - if (error) - goto out_filestream_unmount; - - error = xfs_syncd_init(mp); - if (error) - goto out_unmount; - - root = igrab(VFS_I(mp->m_rootip)); - if (!root) { - error = ENOENT; - goto out_syncd_stop; - } - if (is_bad_inode(root)) { - error = EINVAL; - goto out_syncd_stop; - } - sb->s_root = d_alloc_root(root); - if (!sb->s_root) { - error = ENOMEM; - goto out_iput; - } - - return 0; - - out_filestream_unmount: - xfs_filestream_unmount(mp); - out_free_sb: - xfs_freesb(mp); - out_destroy_counters: - xfs_icsb_destroy_counters(mp); - out_close_devices: - xfs_close_devices(mp); - out_free_fsname: - xfs_free_fsname(mp); - kfree(mp); - out: - return -error; - - out_iput: - iput(root); - out_syncd_stop: - xfs_syncd_stop(mp); - out_unmount: - /* - * Blow away any referenced inode in the filestreams cache. - * This can and will cause log traffic as inodes go inactive - * here. - */ - xfs_filestream_unmount(mp); - - XFS_bflush(mp->m_ddev_targp); - - xfs_unmountfs(mp); - goto out_free_sb; -} - -STATIC struct dentry * -xfs_fs_mount( - struct file_system_type *fs_type, - int flags, - const char *dev_name, - void *data) -{ - return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); -} - -static int -xfs_fs_nr_cached_objects( - struct super_block *sb) -{ - return xfs_reclaim_inodes_count(XFS_M(sb)); -} - -static void -xfs_fs_free_cached_objects( - struct super_block *sb, - int nr_to_scan) -{ - xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); -} - -static const struct super_operations xfs_super_operations = { - .alloc_inode = xfs_fs_alloc_inode, - .destroy_inode = xfs_fs_destroy_inode, - .dirty_inode = xfs_fs_dirty_inode, - .write_inode = xfs_fs_write_inode, - .evict_inode = xfs_fs_evict_inode, - .put_super = xfs_fs_put_super, - .sync_fs = xfs_fs_sync_fs, - .freeze_fs = xfs_fs_freeze, - .unfreeze_fs = xfs_fs_unfreeze, - .statfs = xfs_fs_statfs, - .remount_fs = xfs_fs_remount, - .show_options = xfs_fs_show_options, - .nr_cached_objects = xfs_fs_nr_cached_objects, - .free_cached_objects = xfs_fs_free_cached_objects, -}; - -static struct file_system_type xfs_fs_type = { - .owner = THIS_MODULE, - .name = "xfs", - .mount = xfs_fs_mount, - .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, -}; - -STATIC int __init -xfs_init_zones(void) -{ - - xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); - if (!xfs_ioend_zone) - goto out; - - xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, - xfs_ioend_zone); - if (!xfs_ioend_pool) - goto out_destroy_ioend_zone; - - xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), - "xfs_log_ticket"); - if (!xfs_log_ticket_zone) - goto out_destroy_ioend_pool; - - xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), - "xfs_bmap_free_item"); - if (!xfs_bmap_free_item_zone) - goto out_destroy_log_ticket_zone; - - xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), - "xfs_btree_cur"); - if (!xfs_btree_cur_zone) - goto out_destroy_bmap_free_item_zone; - - xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), - "xfs_da_state"); - if (!xfs_da_state_zone) - goto out_destroy_btree_cur_zone; - - xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); - if (!xfs_dabuf_zone) - goto out_destroy_da_state_zone; - - xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); - if (!xfs_ifork_zone) - goto out_destroy_dabuf_zone; - - xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); - if (!xfs_trans_zone) - goto out_destroy_ifork_zone; - - xfs_log_item_desc_zone = - kmem_zone_init(sizeof(struct xfs_log_item_desc), - "xfs_log_item_desc"); - if (!xfs_log_item_desc_zone) - goto out_destroy_trans_zone; - - /* - * The size of the zone allocated buf log item is the maximum - * size possible under XFS. This wastes a little bit of memory, - * but it is much faster. - */ - xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + - (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / - NBWORD) * sizeof(int))), "xfs_buf_item"); - if (!xfs_buf_item_zone) - goto out_destroy_log_item_desc_zone; - - xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + - ((XFS_EFD_MAX_FAST_EXTENTS - 1) * - sizeof(xfs_extent_t))), "xfs_efd_item"); - if (!xfs_efd_zone) - goto out_destroy_buf_item_zone; - - xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + - ((XFS_EFI_MAX_FAST_EXTENTS - 1) * - sizeof(xfs_extent_t))), "xfs_efi_item"); - if (!xfs_efi_zone) - goto out_destroy_efd_zone; - - xfs_inode_zone = - kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", - KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, - xfs_fs_inode_init_once); - if (!xfs_inode_zone) - goto out_destroy_efi_zone; - - xfs_ili_zone = - kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", - KM_ZONE_SPREAD, NULL); - if (!xfs_ili_zone) - goto out_destroy_inode_zone; - - return 0; - - out_destroy_inode_zone: - kmem_zone_destroy(xfs_inode_zone); - out_destroy_efi_zone: - kmem_zone_destroy(xfs_efi_zone); - out_destroy_efd_zone: - kmem_zone_destroy(xfs_efd_zone); - out_destroy_buf_item_zone: - kmem_zone_destroy(xfs_buf_item_zone); - out_destroy_log_item_desc_zone: - kmem_zone_destroy(xfs_log_item_desc_zone); - out_destroy_trans_zone: - kmem_zone_destroy(xfs_trans_zone); - out_destroy_ifork_zone: - kmem_zone_destroy(xfs_ifork_zone); - out_destroy_dabuf_zone: - kmem_zone_destroy(xfs_dabuf_zone); - out_destroy_da_state_zone: - kmem_zone_destroy(xfs_da_state_zone); - out_destroy_btree_cur_zone: - kmem_zone_destroy(xfs_btree_cur_zone); - out_destroy_bmap_free_item_zone: - kmem_zone_destroy(xfs_bmap_free_item_zone); - out_destroy_log_ticket_zone: - kmem_zone_destroy(xfs_log_ticket_zone); - out_destroy_ioend_pool: - mempool_destroy(xfs_ioend_pool); - out_destroy_ioend_zone: - kmem_zone_destroy(xfs_ioend_zone); - out: - return -ENOMEM; -} - -STATIC void -xfs_destroy_zones(void) -{ - kmem_zone_destroy(xfs_ili_zone); - kmem_zone_destroy(xfs_inode_zone); - kmem_zone_destroy(xfs_efi_zone); - kmem_zone_destroy(xfs_efd_zone); - kmem_zone_destroy(xfs_buf_item_zone); - kmem_zone_destroy(xfs_log_item_desc_zone); - kmem_zone_destroy(xfs_trans_zone); - kmem_zone_destroy(xfs_ifork_zone); - kmem_zone_destroy(xfs_dabuf_zone); - kmem_zone_destroy(xfs_da_state_zone); - kmem_zone_destroy(xfs_btree_cur_zone); - kmem_zone_destroy(xfs_bmap_free_item_zone); - kmem_zone_destroy(xfs_log_ticket_zone); - mempool_destroy(xfs_ioend_pool); - kmem_zone_destroy(xfs_ioend_zone); - -} - -STATIC int __init -xfs_init_workqueues(void) -{ - /* - * max_active is set to 8 to give enough concurency to allow - * multiple work operations on each CPU to run. This allows multiple - * filesystems to be running sync work concurrently, and scales with - * the number of CPUs in the system. - */ - xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_CPU_INTENSIVE, 8); - if (!xfs_syncd_wq) - goto out; - - xfs_ail_wq = alloc_workqueue("xfsail", WQ_CPU_INTENSIVE, 8); - if (!xfs_ail_wq) - goto out_destroy_syncd; - - return 0; - -out_destroy_syncd: - destroy_workqueue(xfs_syncd_wq); -out: - return -ENOMEM; -} - -STATIC void -xfs_destroy_workqueues(void) -{ - destroy_workqueue(xfs_ail_wq); - destroy_workqueue(xfs_syncd_wq); -} - -STATIC int __init -init_xfs_fs(void) -{ - int error; - - printk(KERN_INFO XFS_VERSION_STRING " with " - XFS_BUILD_OPTIONS " enabled\n"); - - xfs_ioend_init(); - xfs_dir_startup(); - - error = xfs_init_zones(); - if (error) - goto out; - - error = xfs_init_workqueues(); - if (error) - goto out_destroy_zones; - - error = xfs_mru_cache_init(); - if (error) - goto out_destroy_wq; - - error = xfs_filestream_init(); - if (error) - goto out_mru_cache_uninit; - - error = xfs_buf_init(); - if (error) - goto out_filestream_uninit; - - error = xfs_init_procfs(); - if (error) - goto out_buf_terminate; - - error = xfs_sysctl_register(); - if (error) - goto out_cleanup_procfs; - - vfs_initquota(); - - error = register_filesystem(&xfs_fs_type); - if (error) - goto out_sysctl_unregister; - return 0; - - out_sysctl_unregister: - xfs_sysctl_unregister(); - out_cleanup_procfs: - xfs_cleanup_procfs(); - out_buf_terminate: - xfs_buf_terminate(); - out_filestream_uninit: - xfs_filestream_uninit(); - out_mru_cache_uninit: - xfs_mru_cache_uninit(); - out_destroy_wq: - xfs_destroy_workqueues(); - out_destroy_zones: - xfs_destroy_zones(); - out: - return error; -} - -STATIC void __exit -exit_xfs_fs(void) -{ - vfs_exitquota(); - unregister_filesystem(&xfs_fs_type); - xfs_sysctl_unregister(); - xfs_cleanup_procfs(); - xfs_buf_terminate(); - xfs_filestream_uninit(); - xfs_mru_cache_uninit(); - xfs_destroy_workqueues(); - xfs_destroy_zones(); -} - -module_init(init_xfs_fs); -module_exit(exit_xfs_fs); - -MODULE_AUTHOR("Silicon Graphics, Inc."); -MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); -MODULE_LICENSE("GPL"); diff --git a/fs/xfs/linux-2.6/xfs_super.h b/fs/xfs/linux-2.6/xfs_super.h deleted file mode 100644 index 50a3266c999e..000000000000 --- a/fs/xfs/linux-2.6/xfs_super.h +++ /dev/null @@ -1,87 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SUPER_H__ -#define __XFS_SUPER_H__ - -#include - -#ifdef CONFIG_XFS_QUOTA -extern void xfs_qm_init(void); -extern void xfs_qm_exit(void); -# define vfs_initquota() xfs_qm_init() -# define vfs_exitquota() xfs_qm_exit() -#else -# define vfs_initquota() do { } while (0) -# define vfs_exitquota() do { } while (0) -#endif - -#ifdef CONFIG_XFS_POSIX_ACL -# define XFS_ACL_STRING "ACLs, " -# define set_posix_acl_flag(sb) ((sb)->s_flags |= MS_POSIXACL) -#else -# define XFS_ACL_STRING -# define set_posix_acl_flag(sb) do { } while (0) -#endif - -#define XFS_SECURITY_STRING "security attributes, " - -#ifdef CONFIG_XFS_RT -# define XFS_REALTIME_STRING "realtime, " -#else -# define XFS_REALTIME_STRING -#endif - -#if XFS_BIG_BLKNOS -# if XFS_BIG_INUMS -# define XFS_BIGFS_STRING "large block/inode numbers, " -# else -# define XFS_BIGFS_STRING "large block numbers, " -# endif -#else -# define XFS_BIGFS_STRING -#endif - -#ifdef DEBUG -# define XFS_DBG_STRING "debug" -#else -# define XFS_DBG_STRING "no debug" -#endif - -#define XFS_VERSION_STRING "SGI XFS" -#define XFS_BUILD_OPTIONS XFS_ACL_STRING \ - XFS_SECURITY_STRING \ - XFS_REALTIME_STRING \ - XFS_BIGFS_STRING \ - XFS_DBG_STRING /* DBG must be last */ - -struct xfs_inode; -struct xfs_mount; -struct xfs_buftarg; -struct block_device; - -extern __uint64_t xfs_max_file_offset(unsigned int); - -extern void xfs_blkdev_issue_flush(struct xfs_buftarg *); - -extern const struct export_operations xfs_export_operations; -extern const struct xattr_handler *xfs_xattr_handlers[]; -extern const struct quotactl_ops xfs_quotactl_operations; - -#define XFS_M(sb) ((struct xfs_mount *)((sb)->s_fs_info)) - -#endif /* __XFS_SUPER_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c deleted file mode 100644 index 4604f90f86a3..000000000000 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ /dev/null @@ -1,1065 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_trans_priv.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_dinode.h" -#include "xfs_error.h" -#include "xfs_filestream.h" -#include "xfs_vnodeops.h" -#include "xfs_inode_item.h" -#include "xfs_quota.h" -#include "xfs_trace.h" -#include "xfs_fsops.h" - -#include -#include - -struct workqueue_struct *xfs_syncd_wq; /* sync workqueue */ - -/* - * The inode lookup is done in batches to keep the amount of lock traffic and - * radix tree lookups to a minimum. The batch size is a trade off between - * lookup reduction and stack usage. This is in the reclaim path, so we can't - * be too greedy. - */ -#define XFS_LOOKUP_BATCH 32 - -STATIC int -xfs_inode_ag_walk_grab( - struct xfs_inode *ip) -{ - struct inode *inode = VFS_I(ip); - - ASSERT(rcu_read_lock_held()); - - /* - * check for stale RCU freed inode - * - * If the inode has been reallocated, it doesn't matter if it's not in - * the AG we are walking - we are walking for writeback, so if it - * passes all the "valid inode" checks and is dirty, then we'll write - * it back anyway. If it has been reallocated and still being - * initialised, the XFS_INEW check below will catch it. - */ - spin_lock(&ip->i_flags_lock); - if (!ip->i_ino) - goto out_unlock_noent; - - /* avoid new or reclaimable inodes. Leave for reclaim code to flush */ - if (__xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM)) - goto out_unlock_noent; - spin_unlock(&ip->i_flags_lock); - - /* nothing to sync during shutdown */ - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return EFSCORRUPTED; - - /* If we can't grab the inode, it must on it's way to reclaim. */ - if (!igrab(inode)) - return ENOENT; - - if (is_bad_inode(inode)) { - IRELE(ip); - return ENOENT; - } - - /* inode is valid */ - return 0; - -out_unlock_noent: - spin_unlock(&ip->i_flags_lock); - return ENOENT; -} - -STATIC int -xfs_inode_ag_walk( - struct xfs_mount *mp, - struct xfs_perag *pag, - int (*execute)(struct xfs_inode *ip, - struct xfs_perag *pag, int flags), - int flags) -{ - uint32_t first_index; - int last_error = 0; - int skipped; - int done; - int nr_found; - -restart: - done = 0; - skipped = 0; - first_index = 0; - nr_found = 0; - do { - struct xfs_inode *batch[XFS_LOOKUP_BATCH]; - int error = 0; - int i; - - rcu_read_lock(); - nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, - (void **)batch, first_index, - XFS_LOOKUP_BATCH); - if (!nr_found) { - rcu_read_unlock(); - break; - } - - /* - * Grab the inodes before we drop the lock. if we found - * nothing, nr == 0 and the loop will be skipped. - */ - for (i = 0; i < nr_found; i++) { - struct xfs_inode *ip = batch[i]; - - if (done || xfs_inode_ag_walk_grab(ip)) - batch[i] = NULL; - - /* - * Update the index for the next lookup. Catch - * overflows into the next AG range which can occur if - * we have inodes in the last block of the AG and we - * are currently pointing to the last inode. - * - * Because we may see inodes that are from the wrong AG - * due to RCU freeing and reallocation, only update the - * index if it lies in this AG. It was a race that lead - * us to see this inode, so another lookup from the - * same index will not find it again. - */ - if (XFS_INO_TO_AGNO(mp, ip->i_ino) != pag->pag_agno) - continue; - first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); - if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) - done = 1; - } - - /* unlock now we've grabbed the inodes. */ - rcu_read_unlock(); - - for (i = 0; i < nr_found; i++) { - if (!batch[i]) - continue; - error = execute(batch[i], pag, flags); - IRELE(batch[i]); - if (error == EAGAIN) { - skipped++; - continue; - } - if (error && last_error != EFSCORRUPTED) - last_error = error; - } - - /* bail out if the filesystem is corrupted. */ - if (error == EFSCORRUPTED) - break; - - cond_resched(); - - } while (nr_found && !done); - - if (skipped) { - delay(1); - goto restart; - } - return last_error; -} - -int -xfs_inode_ag_iterator( - struct xfs_mount *mp, - int (*execute)(struct xfs_inode *ip, - struct xfs_perag *pag, int flags), - int flags) -{ - struct xfs_perag *pag; - int error = 0; - int last_error = 0; - xfs_agnumber_t ag; - - ag = 0; - while ((pag = xfs_perag_get(mp, ag))) { - ag = pag->pag_agno + 1; - error = xfs_inode_ag_walk(mp, pag, execute, flags); - xfs_perag_put(pag); - if (error) { - last_error = error; - if (error == EFSCORRUPTED) - break; - } - } - return XFS_ERROR(last_error); -} - -STATIC int -xfs_sync_inode_data( - struct xfs_inode *ip, - struct xfs_perag *pag, - int flags) -{ - struct inode *inode = VFS_I(ip); - struct address_space *mapping = inode->i_mapping; - int error = 0; - - if (!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) - goto out_wait; - - if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED)) { - if (flags & SYNC_TRYLOCK) - goto out_wait; - xfs_ilock(ip, XFS_IOLOCK_SHARED); - } - - error = xfs_flush_pages(ip, 0, -1, (flags & SYNC_WAIT) ? - 0 : XBF_ASYNC, FI_NONE); - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - - out_wait: - if (flags & SYNC_WAIT) - xfs_ioend_wait(ip); - return error; -} - -STATIC int -xfs_sync_inode_attr( - struct xfs_inode *ip, - struct xfs_perag *pag, - int flags) -{ - int error = 0; - - xfs_ilock(ip, XFS_ILOCK_SHARED); - if (xfs_inode_clean(ip)) - goto out_unlock; - if (!xfs_iflock_nowait(ip)) { - if (!(flags & SYNC_WAIT)) - goto out_unlock; - xfs_iflock(ip); - } - - if (xfs_inode_clean(ip)) { - xfs_ifunlock(ip); - goto out_unlock; - } - - error = xfs_iflush(ip, flags); - - /* - * We don't want to try again on non-blocking flushes that can't run - * again immediately. If an inode really must be written, then that's - * what the SYNC_WAIT flag is for. - */ - if (error == EAGAIN) { - ASSERT(!(flags & SYNC_WAIT)); - error = 0; - } - - out_unlock: - xfs_iunlock(ip, XFS_ILOCK_SHARED); - return error; -} - -/* - * Write out pagecache data for the whole filesystem. - */ -STATIC int -xfs_sync_data( - struct xfs_mount *mp, - int flags) -{ - int error; - - ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0); - - error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags); - if (error) - return XFS_ERROR(error); - - xfs_log_force(mp, (flags & SYNC_WAIT) ? XFS_LOG_SYNC : 0); - return 0; -} - -/* - * Write out inode metadata (attributes) for the whole filesystem. - */ -STATIC int -xfs_sync_attr( - struct xfs_mount *mp, - int flags) -{ - ASSERT((flags & ~SYNC_WAIT) == 0); - - return xfs_inode_ag_iterator(mp, xfs_sync_inode_attr, flags); -} - -STATIC int -xfs_sync_fsdata( - struct xfs_mount *mp) -{ - struct xfs_buf *bp; - - /* - * If the buffer is pinned then push on the log so we won't get stuck - * waiting in the write for someone, maybe ourselves, to flush the log. - * - * Even though we just pushed the log above, we did not have the - * superblock buffer locked at that point so it can become pinned in - * between there and here. - */ - bp = xfs_getsb(mp, 0); - if (xfs_buf_ispinned(bp)) - xfs_log_force(mp, 0); - - return xfs_bwrite(mp, bp); -} - -/* - * When remounting a filesystem read-only or freezing the filesystem, we have - * two phases to execute. This first phase is syncing the data before we - * quiesce the filesystem, and the second is flushing all the inodes out after - * we've waited for all the transactions created by the first phase to - * complete. The second phase ensures that the inodes are written to their - * location on disk rather than just existing in transactions in the log. This - * means after a quiesce there is no log replay required to write the inodes to - * disk (this is the main difference between a sync and a quiesce). - */ -/* - * First stage of freeze - no writers will make progress now we are here, - * so we flush delwri and delalloc buffers here, then wait for all I/O to - * complete. Data is frozen at that point. Metadata is not frozen, - * transactions can still occur here so don't bother flushing the buftarg - * because it'll just get dirty again. - */ -int -xfs_quiesce_data( - struct xfs_mount *mp) -{ - int error, error2 = 0; - - xfs_qm_sync(mp, SYNC_TRYLOCK); - xfs_qm_sync(mp, SYNC_WAIT); - - /* force out the newly dirtied log buffers */ - xfs_log_force(mp, XFS_LOG_SYNC); - - /* write superblock and hoover up shutdown errors */ - error = xfs_sync_fsdata(mp); - - /* make sure all delwri buffers are written out */ - xfs_flush_buftarg(mp->m_ddev_targp, 1); - - /* mark the log as covered if needed */ - if (xfs_log_need_covered(mp)) - error2 = xfs_fs_log_dummy(mp); - - /* flush data-only devices */ - if (mp->m_rtdev_targp) - XFS_bflush(mp->m_rtdev_targp); - - return error ? error : error2; -} - -STATIC void -xfs_quiesce_fs( - struct xfs_mount *mp) -{ - int count = 0, pincount; - - xfs_reclaim_inodes(mp, 0); - xfs_flush_buftarg(mp->m_ddev_targp, 0); - - /* - * This loop must run at least twice. The first instance of the loop - * will flush most meta data but that will generate more meta data - * (typically directory updates). Which then must be flushed and - * logged before we can write the unmount record. We also so sync - * reclaim of inodes to catch any that the above delwri flush skipped. - */ - do { - xfs_reclaim_inodes(mp, SYNC_WAIT); - xfs_sync_attr(mp, SYNC_WAIT); - pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1); - if (!pincount) { - delay(50); - count++; - } - } while (count < 2); -} - -/* - * Second stage of a quiesce. The data is already synced, now we have to take - * care of the metadata. New transactions are already blocked, so we need to - * wait for any remaining transactions to drain out before proceeding. - */ -void -xfs_quiesce_attr( - struct xfs_mount *mp) -{ - int error = 0; - - /* wait for all modifications to complete */ - while (atomic_read(&mp->m_active_trans) > 0) - delay(100); - - /* flush inodes and push all remaining buffers out to disk */ - xfs_quiesce_fs(mp); - - /* - * Just warn here till VFS can correctly support - * read-only remount without racing. - */ - WARN_ON(atomic_read(&mp->m_active_trans) != 0); - - /* Push the superblock and write an unmount record */ - error = xfs_log_sbcount(mp); - if (error) - xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " - "Frozen image may not be consistent."); - xfs_log_unmount_write(mp); - xfs_unmountfs_writesb(mp); -} - -static void -xfs_syncd_queue_sync( - struct xfs_mount *mp) -{ - queue_delayed_work(xfs_syncd_wq, &mp->m_sync_work, - msecs_to_jiffies(xfs_syncd_centisecs * 10)); -} - -/* - * Every sync period we need to unpin all items, reclaim inodes and sync - * disk quotas. We might need to cover the log to indicate that the - * filesystem is idle and not frozen. - */ -STATIC void -xfs_sync_worker( - struct work_struct *work) -{ - struct xfs_mount *mp = container_of(to_delayed_work(work), - struct xfs_mount, m_sync_work); - int error; - - if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { - /* dgc: errors ignored here */ - if (mp->m_super->s_frozen == SB_UNFROZEN && - xfs_log_need_covered(mp)) - error = xfs_fs_log_dummy(mp); - else - xfs_log_force(mp, 0); - error = xfs_qm_sync(mp, SYNC_TRYLOCK); - - /* start pushing all the metadata that is currently dirty */ - xfs_ail_push_all(mp->m_ail); - } - - /* queue us up again */ - xfs_syncd_queue_sync(mp); -} - -/* - * Queue a new inode reclaim pass if there are reclaimable inodes and there - * isn't a reclaim pass already in progress. By default it runs every 5s based - * on the xfs syncd work default of 30s. Perhaps this should have it's own - * tunable, but that can be done if this method proves to be ineffective or too - * aggressive. - */ -static void -xfs_syncd_queue_reclaim( - struct xfs_mount *mp) -{ - - /* - * We can have inodes enter reclaim after we've shut down the syncd - * workqueue during unmount, so don't allow reclaim work to be queued - * during unmount. - */ - if (!(mp->m_super->s_flags & MS_ACTIVE)) - return; - - rcu_read_lock(); - if (radix_tree_tagged(&mp->m_perag_tree, XFS_ICI_RECLAIM_TAG)) { - queue_delayed_work(xfs_syncd_wq, &mp->m_reclaim_work, - msecs_to_jiffies(xfs_syncd_centisecs / 6 * 10)); - } - rcu_read_unlock(); -} - -/* - * This is a fast pass over the inode cache to try to get reclaim moving on as - * many inodes as possible in a short period of time. It kicks itself every few - * seconds, as well as being kicked by the inode cache shrinker when memory - * goes low. It scans as quickly as possible avoiding locked inodes or those - * already being flushed, and once done schedules a future pass. - */ -STATIC void -xfs_reclaim_worker( - struct work_struct *work) -{ - struct xfs_mount *mp = container_of(to_delayed_work(work), - struct xfs_mount, m_reclaim_work); - - xfs_reclaim_inodes(mp, SYNC_TRYLOCK); - xfs_syncd_queue_reclaim(mp); -} - -/* - * Flush delayed allocate data, attempting to free up reserved space - * from existing allocations. At this point a new allocation attempt - * has failed with ENOSPC and we are in the process of scratching our - * heads, looking about for more room. - * - * Queue a new data flush if there isn't one already in progress and - * wait for completion of the flush. This means that we only ever have one - * inode flush in progress no matter how many ENOSPC events are occurring and - * so will prevent the system from bogging down due to every concurrent - * ENOSPC event scanning all the active inodes in the system for writeback. - */ -void -xfs_flush_inodes( - struct xfs_inode *ip) -{ - struct xfs_mount *mp = ip->i_mount; - - queue_work(xfs_syncd_wq, &mp->m_flush_work); - flush_work_sync(&mp->m_flush_work); -} - -STATIC void -xfs_flush_worker( - struct work_struct *work) -{ - struct xfs_mount *mp = container_of(work, - struct xfs_mount, m_flush_work); - - xfs_sync_data(mp, SYNC_TRYLOCK); - xfs_sync_data(mp, SYNC_TRYLOCK | SYNC_WAIT); -} - -int -xfs_syncd_init( - struct xfs_mount *mp) -{ - INIT_WORK(&mp->m_flush_work, xfs_flush_worker); - INIT_DELAYED_WORK(&mp->m_sync_work, xfs_sync_worker); - INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); - - xfs_syncd_queue_sync(mp); - xfs_syncd_queue_reclaim(mp); - - return 0; -} - -void -xfs_syncd_stop( - struct xfs_mount *mp) -{ - cancel_delayed_work_sync(&mp->m_sync_work); - cancel_delayed_work_sync(&mp->m_reclaim_work); - cancel_work_sync(&mp->m_flush_work); -} - -void -__xfs_inode_set_reclaim_tag( - struct xfs_perag *pag, - struct xfs_inode *ip) -{ - radix_tree_tag_set(&pag->pag_ici_root, - XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino), - XFS_ICI_RECLAIM_TAG); - - if (!pag->pag_ici_reclaimable) { - /* propagate the reclaim tag up into the perag radix tree */ - spin_lock(&ip->i_mount->m_perag_lock); - radix_tree_tag_set(&ip->i_mount->m_perag_tree, - XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino), - XFS_ICI_RECLAIM_TAG); - spin_unlock(&ip->i_mount->m_perag_lock); - - /* schedule periodic background inode reclaim */ - xfs_syncd_queue_reclaim(ip->i_mount); - - trace_xfs_perag_set_reclaim(ip->i_mount, pag->pag_agno, - -1, _RET_IP_); - } - pag->pag_ici_reclaimable++; -} - -/* - * We set the inode flag atomically with the radix tree tag. - * Once we get tag lookups on the radix tree, this inode flag - * can go away. - */ -void -xfs_inode_set_reclaim_tag( - xfs_inode_t *ip) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_perag *pag; - - pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); - spin_lock(&pag->pag_ici_lock); - spin_lock(&ip->i_flags_lock); - __xfs_inode_set_reclaim_tag(pag, ip); - __xfs_iflags_set(ip, XFS_IRECLAIMABLE); - spin_unlock(&ip->i_flags_lock); - spin_unlock(&pag->pag_ici_lock); - xfs_perag_put(pag); -} - -STATIC void -__xfs_inode_clear_reclaim( - xfs_perag_t *pag, - xfs_inode_t *ip) -{ - pag->pag_ici_reclaimable--; - if (!pag->pag_ici_reclaimable) { - /* clear the reclaim tag from the perag radix tree */ - spin_lock(&ip->i_mount->m_perag_lock); - radix_tree_tag_clear(&ip->i_mount->m_perag_tree, - XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino), - XFS_ICI_RECLAIM_TAG); - spin_unlock(&ip->i_mount->m_perag_lock); - trace_xfs_perag_clear_reclaim(ip->i_mount, pag->pag_agno, - -1, _RET_IP_); - } -} - -void -__xfs_inode_clear_reclaim_tag( - xfs_mount_t *mp, - xfs_perag_t *pag, - xfs_inode_t *ip) -{ - radix_tree_tag_clear(&pag->pag_ici_root, - XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG); - __xfs_inode_clear_reclaim(pag, ip); -} - -/* - * Grab the inode for reclaim exclusively. - * Return 0 if we grabbed it, non-zero otherwise. - */ -STATIC int -xfs_reclaim_inode_grab( - struct xfs_inode *ip, - int flags) -{ - ASSERT(rcu_read_lock_held()); - - /* quick check for stale RCU freed inode */ - if (!ip->i_ino) - return 1; - - /* - * do some unlocked checks first to avoid unnecessary lock traffic. - * The first is a flush lock check, the second is a already in reclaim - * check. Only do these checks if we are not going to block on locks. - */ - if ((flags & SYNC_TRYLOCK) && - (!ip->i_flush.done || __xfs_iflags_test(ip, XFS_IRECLAIM))) { - return 1; - } - - /* - * The radix tree lock here protects a thread in xfs_iget from racing - * with us starting reclaim on the inode. Once we have the - * XFS_IRECLAIM flag set it will not touch us. - * - * Due to RCU lookup, we may find inodes that have been freed and only - * have XFS_IRECLAIM set. Indeed, we may see reallocated inodes that - * aren't candidates for reclaim at all, so we must check the - * XFS_IRECLAIMABLE is set first before proceeding to reclaim. - */ - spin_lock(&ip->i_flags_lock); - if (!__xfs_iflags_test(ip, XFS_IRECLAIMABLE) || - __xfs_iflags_test(ip, XFS_IRECLAIM)) { - /* not a reclaim candidate. */ - spin_unlock(&ip->i_flags_lock); - return 1; - } - __xfs_iflags_set(ip, XFS_IRECLAIM); - spin_unlock(&ip->i_flags_lock); - return 0; -} - -/* - * Inodes in different states need to be treated differently, and the return - * value of xfs_iflush is not sufficient to get this right. The following table - * lists the inode states and the reclaim actions necessary for non-blocking - * reclaim: - * - * - * inode state iflush ret required action - * --------------- ---------- --------------- - * bad - reclaim - * shutdown EIO unpin and reclaim - * clean, unpinned 0 reclaim - * stale, unpinned 0 reclaim - * clean, pinned(*) 0 requeue - * stale, pinned EAGAIN requeue - * dirty, delwri ok 0 requeue - * dirty, delwri blocked EAGAIN requeue - * dirty, sync flush 0 reclaim - * - * (*) dgc: I don't think the clean, pinned state is possible but it gets - * handled anyway given the order of checks implemented. - * - * As can be seen from the table, the return value of xfs_iflush() is not - * sufficient to correctly decide the reclaim action here. The checks in - * xfs_iflush() might look like duplicates, but they are not. - * - * Also, because we get the flush lock first, we know that any inode that has - * been flushed delwri has had the flush completed by the time we check that - * the inode is clean. The clean inode check needs to be done before flushing - * the inode delwri otherwise we would loop forever requeuing clean inodes as - * we cannot tell apart a successful delwri flush and a clean inode from the - * return value of xfs_iflush(). - * - * Note that because the inode is flushed delayed write by background - * writeback, the flush lock may already be held here and waiting on it can - * result in very long latencies. Hence for sync reclaims, where we wait on the - * flush lock, the caller should push out delayed write inodes first before - * trying to reclaim them to minimise the amount of time spent waiting. For - * background relaim, we just requeue the inode for the next pass. - * - * Hence the order of actions after gaining the locks should be: - * bad => reclaim - * shutdown => unpin and reclaim - * pinned, delwri => requeue - * pinned, sync => unpin - * stale => reclaim - * clean => reclaim - * dirty, delwri => flush and requeue - * dirty, sync => flush, wait and reclaim - */ -STATIC int -xfs_reclaim_inode( - struct xfs_inode *ip, - struct xfs_perag *pag, - int sync_mode) -{ - int error; - -restart: - error = 0; - xfs_ilock(ip, XFS_ILOCK_EXCL); - if (!xfs_iflock_nowait(ip)) { - if (!(sync_mode & SYNC_WAIT)) - goto out; - xfs_iflock(ip); - } - - if (is_bad_inode(VFS_I(ip))) - goto reclaim; - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { - xfs_iunpin_wait(ip); - goto reclaim; - } - if (xfs_ipincount(ip)) { - if (!(sync_mode & SYNC_WAIT)) { - xfs_ifunlock(ip); - goto out; - } - xfs_iunpin_wait(ip); - } - if (xfs_iflags_test(ip, XFS_ISTALE)) - goto reclaim; - if (xfs_inode_clean(ip)) - goto reclaim; - - /* - * Now we have an inode that needs flushing. - * - * We do a nonblocking flush here even if we are doing a SYNC_WAIT - * reclaim as we can deadlock with inode cluster removal. - * xfs_ifree_cluster() can lock the inode buffer before it locks the - * ip->i_lock, and we are doing the exact opposite here. As a result, - * doing a blocking xfs_itobp() to get the cluster buffer will result - * in an ABBA deadlock with xfs_ifree_cluster(). - * - * As xfs_ifree_cluser() must gather all inodes that are active in the - * cache to mark them stale, if we hit this case we don't actually want - * to do IO here - we want the inode marked stale so we can simply - * reclaim it. Hence if we get an EAGAIN error on a SYNC_WAIT flush, - * just unlock the inode, back off and try again. Hopefully the next - * pass through will see the stale flag set on the inode. - */ - error = xfs_iflush(ip, SYNC_TRYLOCK | sync_mode); - if (sync_mode & SYNC_WAIT) { - if (error == EAGAIN) { - xfs_iunlock(ip, XFS_ILOCK_EXCL); - /* backoff longer than in xfs_ifree_cluster */ - delay(2); - goto restart; - } - xfs_iflock(ip); - goto reclaim; - } - - /* - * When we have to flush an inode but don't have SYNC_WAIT set, we - * flush the inode out using a delwri buffer and wait for the next - * call into reclaim to find it in a clean state instead of waiting for - * it now. We also don't return errors here - if the error is transient - * then the next reclaim pass will flush the inode, and if the error - * is permanent then the next sync reclaim will reclaim the inode and - * pass on the error. - */ - if (error && error != EAGAIN && !XFS_FORCED_SHUTDOWN(ip->i_mount)) { - xfs_warn(ip->i_mount, - "inode 0x%llx background reclaim flush failed with %d", - (long long)ip->i_ino, error); - } -out: - xfs_iflags_clear(ip, XFS_IRECLAIM); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - /* - * We could return EAGAIN here to make reclaim rescan the inode tree in - * a short while. However, this just burns CPU time scanning the tree - * waiting for IO to complete and xfssyncd never goes back to the idle - * state. Instead, return 0 to let the next scheduled background reclaim - * attempt to reclaim the inode again. - */ - return 0; - -reclaim: - xfs_ifunlock(ip); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - XFS_STATS_INC(xs_ig_reclaims); - /* - * Remove the inode from the per-AG radix tree. - * - * Because radix_tree_delete won't complain even if the item was never - * added to the tree assert that it's been there before to catch - * problems with the inode life time early on. - */ - spin_lock(&pag->pag_ici_lock); - if (!radix_tree_delete(&pag->pag_ici_root, - XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino))) - ASSERT(0); - __xfs_inode_clear_reclaim(pag, ip); - spin_unlock(&pag->pag_ici_lock); - - /* - * Here we do an (almost) spurious inode lock in order to coordinate - * with inode cache radix tree lookups. This is because the lookup - * can reference the inodes in the cache without taking references. - * - * We make that OK here by ensuring that we wait until the inode is - * unlocked after the lookup before we go ahead and free it. We get - * both the ilock and the iolock because the code may need to drop the - * ilock one but will still hold the iolock. - */ - xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - xfs_qm_dqdetach(ip); - xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); - - xfs_inode_free(ip); - return error; - -} - -/* - * Walk the AGs and reclaim the inodes in them. Even if the filesystem is - * corrupted, we still want to try to reclaim all the inodes. If we don't, - * then a shut down during filesystem unmount reclaim walk leak all the - * unreclaimed inodes. - */ -int -xfs_reclaim_inodes_ag( - struct xfs_mount *mp, - int flags, - int *nr_to_scan) -{ - struct xfs_perag *pag; - int error = 0; - int last_error = 0; - xfs_agnumber_t ag; - int trylock = flags & SYNC_TRYLOCK; - int skipped; - -restart: - ag = 0; - skipped = 0; - while ((pag = xfs_perag_get_tag(mp, ag, XFS_ICI_RECLAIM_TAG))) { - unsigned long first_index = 0; - int done = 0; - int nr_found = 0; - - ag = pag->pag_agno + 1; - - if (trylock) { - if (!mutex_trylock(&pag->pag_ici_reclaim_lock)) { - skipped++; - xfs_perag_put(pag); - continue; - } - first_index = pag->pag_ici_reclaim_cursor; - } else - mutex_lock(&pag->pag_ici_reclaim_lock); - - do { - struct xfs_inode *batch[XFS_LOOKUP_BATCH]; - int i; - - rcu_read_lock(); - nr_found = radix_tree_gang_lookup_tag( - &pag->pag_ici_root, - (void **)batch, first_index, - XFS_LOOKUP_BATCH, - XFS_ICI_RECLAIM_TAG); - if (!nr_found) { - done = 1; - rcu_read_unlock(); - break; - } - - /* - * Grab the inodes before we drop the lock. if we found - * nothing, nr == 0 and the loop will be skipped. - */ - for (i = 0; i < nr_found; i++) { - struct xfs_inode *ip = batch[i]; - - if (done || xfs_reclaim_inode_grab(ip, flags)) - batch[i] = NULL; - - /* - * Update the index for the next lookup. Catch - * overflows into the next AG range which can - * occur if we have inodes in the last block of - * the AG and we are currently pointing to the - * last inode. - * - * Because we may see inodes that are from the - * wrong AG due to RCU freeing and - * reallocation, only update the index if it - * lies in this AG. It was a race that lead us - * to see this inode, so another lookup from - * the same index will not find it again. - */ - if (XFS_INO_TO_AGNO(mp, ip->i_ino) != - pag->pag_agno) - continue; - first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); - if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) - done = 1; - } - - /* unlock now we've grabbed the inodes. */ - rcu_read_unlock(); - - for (i = 0; i < nr_found; i++) { - if (!batch[i]) - continue; - error = xfs_reclaim_inode(batch[i], pag, flags); - if (error && last_error != EFSCORRUPTED) - last_error = error; - } - - *nr_to_scan -= XFS_LOOKUP_BATCH; - - cond_resched(); - - } while (nr_found && !done && *nr_to_scan > 0); - - if (trylock && !done) - pag->pag_ici_reclaim_cursor = first_index; - else - pag->pag_ici_reclaim_cursor = 0; - mutex_unlock(&pag->pag_ici_reclaim_lock); - xfs_perag_put(pag); - } - - /* - * if we skipped any AG, and we still have scan count remaining, do - * another pass this time using blocking reclaim semantics (i.e - * waiting on the reclaim locks and ignoring the reclaim cursors). This - * ensure that when we get more reclaimers than AGs we block rather - * than spin trying to execute reclaim. - */ - if (skipped && (flags & SYNC_WAIT) && *nr_to_scan > 0) { - trylock = 0; - goto restart; - } - return XFS_ERROR(last_error); -} - -int -xfs_reclaim_inodes( - xfs_mount_t *mp, - int mode) -{ - int nr_to_scan = INT_MAX; - - return xfs_reclaim_inodes_ag(mp, mode, &nr_to_scan); -} - -/* - * Scan a certain number of inodes for reclaim. - * - * When called we make sure that there is a background (fast) inode reclaim in - * progress, while we will throttle the speed of reclaim via doing synchronous - * reclaim of inodes. That means if we come across dirty inodes, we wait for - * them to be cleaned, which we hope will not be very long due to the - * background walker having already kicked the IO off on those dirty inodes. - */ -void -xfs_reclaim_inodes_nr( - struct xfs_mount *mp, - int nr_to_scan) -{ - /* kick background reclaimer and push the AIL */ - xfs_syncd_queue_reclaim(mp); - xfs_ail_push_all(mp->m_ail); - - xfs_reclaim_inodes_ag(mp, SYNC_TRYLOCK | SYNC_WAIT, &nr_to_scan); -} - -/* - * Return the number of reclaimable inodes in the filesystem for - * the shrinker to determine how much to reclaim. - */ -int -xfs_reclaim_inodes_count( - struct xfs_mount *mp) -{ - struct xfs_perag *pag; - xfs_agnumber_t ag = 0; - int reclaimable = 0; - - while ((pag = xfs_perag_get_tag(mp, ag, XFS_ICI_RECLAIM_TAG))) { - ag = pag->pag_agno + 1; - reclaimable += pag->pag_ici_reclaimable; - xfs_perag_put(pag); - } - return reclaimable; -} - diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h deleted file mode 100644 index 941202e7ac6e..000000000000 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ /dev/null @@ -1,51 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef XFS_SYNC_H -#define XFS_SYNC_H 1 - -struct xfs_mount; -struct xfs_perag; - -#define SYNC_WAIT 0x0001 /* wait for i/o to complete */ -#define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ - -extern struct workqueue_struct *xfs_syncd_wq; /* sync workqueue */ - -int xfs_syncd_init(struct xfs_mount *mp); -void xfs_syncd_stop(struct xfs_mount *mp); - -int xfs_quiesce_data(struct xfs_mount *mp); -void xfs_quiesce_attr(struct xfs_mount *mp); - -void xfs_flush_inodes(struct xfs_inode *ip); - -int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); -int xfs_reclaim_inodes_count(struct xfs_mount *mp); -void xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); - -void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); -void __xfs_inode_set_reclaim_tag(struct xfs_perag *pag, struct xfs_inode *ip); -void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag, - struct xfs_inode *ip); - -int xfs_sync_inode_grab(struct xfs_inode *ip); -int xfs_inode_ag_iterator(struct xfs_mount *mp, - int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags), - int flags); - -#endif diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c deleted file mode 100644 index ee2d2adaa438..000000000000 --- a/fs/xfs/linux-2.6/xfs_sysctl.c +++ /dev/null @@ -1,252 +0,0 @@ -/* - * Copyright (c) 2001-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include -#include -#include "xfs_error.h" - -static struct ctl_table_header *xfs_table_header; - -#ifdef CONFIG_PROC_FS -STATIC int -xfs_stats_clear_proc_handler( - ctl_table *ctl, - int write, - void __user *buffer, - size_t *lenp, - loff_t *ppos) -{ - int c, ret, *valp = ctl->data; - __uint32_t vn_active; - - ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); - - if (!ret && write && *valp) { - xfs_notice(NULL, "Clearing xfsstats"); - for_each_possible_cpu(c) { - preempt_disable(); - /* save vn_active, it's a universal truth! */ - vn_active = per_cpu(xfsstats, c).vn_active; - memset(&per_cpu(xfsstats, c), 0, - sizeof(struct xfsstats)); - per_cpu(xfsstats, c).vn_active = vn_active; - preempt_enable(); - } - xfs_stats_clear = 0; - } - - return ret; -} - -STATIC int -xfs_panic_mask_proc_handler( - ctl_table *ctl, - int write, - void __user *buffer, - size_t *lenp, - loff_t *ppos) -{ - int ret, *valp = ctl->data; - - ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); - if (!ret && write) { - xfs_panic_mask = *valp; -#ifdef DEBUG - xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES); -#endif - } - return ret; -} -#endif /* CONFIG_PROC_FS */ - -static ctl_table xfs_table[] = { - { - .procname = "irix_sgid_inherit", - .data = &xfs_params.sgid_inherit.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.sgid_inherit.min, - .extra2 = &xfs_params.sgid_inherit.max - }, - { - .procname = "irix_symlink_mode", - .data = &xfs_params.symlink_mode.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.symlink_mode.min, - .extra2 = &xfs_params.symlink_mode.max - }, - { - .procname = "panic_mask", - .data = &xfs_params.panic_mask.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = xfs_panic_mask_proc_handler, - .extra1 = &xfs_params.panic_mask.min, - .extra2 = &xfs_params.panic_mask.max - }, - - { - .procname = "error_level", - .data = &xfs_params.error_level.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.error_level.min, - .extra2 = &xfs_params.error_level.max - }, - { - .procname = "xfssyncd_centisecs", - .data = &xfs_params.syncd_timer.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.syncd_timer.min, - .extra2 = &xfs_params.syncd_timer.max - }, - { - .procname = "inherit_sync", - .data = &xfs_params.inherit_sync.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.inherit_sync.min, - .extra2 = &xfs_params.inherit_sync.max - }, - { - .procname = "inherit_nodump", - .data = &xfs_params.inherit_nodump.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.inherit_nodump.min, - .extra2 = &xfs_params.inherit_nodump.max - }, - { - .procname = "inherit_noatime", - .data = &xfs_params.inherit_noatim.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.inherit_noatim.min, - .extra2 = &xfs_params.inherit_noatim.max - }, - { - .procname = "xfsbufd_centisecs", - .data = &xfs_params.xfs_buf_timer.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.xfs_buf_timer.min, - .extra2 = &xfs_params.xfs_buf_timer.max - }, - { - .procname = "age_buffer_centisecs", - .data = &xfs_params.xfs_buf_age.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.xfs_buf_age.min, - .extra2 = &xfs_params.xfs_buf_age.max - }, - { - .procname = "inherit_nosymlinks", - .data = &xfs_params.inherit_nosym.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.inherit_nosym.min, - .extra2 = &xfs_params.inherit_nosym.max - }, - { - .procname = "rotorstep", - .data = &xfs_params.rotorstep.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.rotorstep.min, - .extra2 = &xfs_params.rotorstep.max - }, - { - .procname = "inherit_nodefrag", - .data = &xfs_params.inherit_nodfrg.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.inherit_nodfrg.min, - .extra2 = &xfs_params.inherit_nodfrg.max - }, - { - .procname = "filestream_centisecs", - .data = &xfs_params.fstrm_timer.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.fstrm_timer.min, - .extra2 = &xfs_params.fstrm_timer.max, - }, - /* please keep this the last entry */ -#ifdef CONFIG_PROC_FS - { - .procname = "stats_clear", - .data = &xfs_params.stats_clear.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = xfs_stats_clear_proc_handler, - .extra1 = &xfs_params.stats_clear.min, - .extra2 = &xfs_params.stats_clear.max - }, -#endif /* CONFIG_PROC_FS */ - - {} -}; - -static ctl_table xfs_dir_table[] = { - { - .procname = "xfs", - .mode = 0555, - .child = xfs_table - }, - {} -}; - -static ctl_table xfs_root_table[] = { - { - .procname = "fs", - .mode = 0555, - .child = xfs_dir_table - }, - {} -}; - -int -xfs_sysctl_register(void) -{ - xfs_table_header = register_sysctl_table(xfs_root_table); - if (!xfs_table_header) - return -ENOMEM; - return 0; -} - -void -xfs_sysctl_unregister(void) -{ - unregister_sysctl_table(xfs_table_header); -} diff --git a/fs/xfs/linux-2.6/xfs_sysctl.h b/fs/xfs/linux-2.6/xfs_sysctl.h deleted file mode 100644 index b9937d450f8e..000000000000 --- a/fs/xfs/linux-2.6/xfs_sysctl.h +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Copyright (c) 2001-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SYSCTL_H__ -#define __XFS_SYSCTL_H__ - -#include - -/* - * Tunable xfs parameters - */ - -typedef struct xfs_sysctl_val { - int min; - int val; - int max; -} xfs_sysctl_val_t; - -typedef struct xfs_param { - xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is - * not a member of parent dir GID. */ - xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */ - xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */ - xfs_sysctl_val_t error_level; /* Degree of reporting for problems */ - xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */ - xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */ - xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */ - xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */ - xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */ - xfs_sysctl_val_t xfs_buf_timer; /* Interval between xfsbufd wakeups. */ - xfs_sysctl_val_t xfs_buf_age; /* Metadata buffer age before flush. */ - xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */ - xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */ - xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */ - xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */ -} xfs_param_t; - -/* - * xfs_error_level: - * - * How much error reporting will be done when internal problems are - * encountered. These problems normally return an EFSCORRUPTED to their - * caller, with no other information reported. - * - * 0 No error reports - * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown - * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any - * additional errors that are known to not cause shutdowns) - * - * xfs_panic_mask bit 0x8 turns the error reports into panics - */ - -enum { - /* XFS_REFCACHE_SIZE = 1 */ - /* XFS_REFCACHE_PURGE = 2 */ - /* XFS_RESTRICT_CHOWN = 3 */ - XFS_SGID_INHERIT = 4, - XFS_SYMLINK_MODE = 5, - XFS_PANIC_MASK = 6, - XFS_ERRLEVEL = 7, - XFS_SYNCD_TIMER = 8, - /* XFS_PROBE_DMAPI = 9 */ - /* XFS_PROBE_IOOPS = 10 */ - /* XFS_PROBE_QUOTA = 11 */ - XFS_STATS_CLEAR = 12, - XFS_INHERIT_SYNC = 13, - XFS_INHERIT_NODUMP = 14, - XFS_INHERIT_NOATIME = 15, - XFS_BUF_TIMER = 16, - XFS_BUF_AGE = 17, - /* XFS_IO_BYPASS = 18 */ - XFS_INHERIT_NOSYM = 19, - XFS_ROTORSTEP = 20, - XFS_INHERIT_NODFRG = 21, - XFS_FILESTREAM_TIMER = 22, -}; - -extern xfs_param_t xfs_params; - -#ifdef CONFIG_SYSCTL -extern int xfs_sysctl_register(void); -extern void xfs_sysctl_unregister(void); -#else -# define xfs_sysctl_register() (0) -# define xfs_sysctl_unregister() do { } while (0) -#endif /* CONFIG_SYSCTL */ - -#endif /* __XFS_SYSCTL_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_trace.c b/fs/xfs/linux-2.6/xfs_trace.c deleted file mode 100644 index 9010ce885e6a..000000000000 --- a/fs/xfs/linux-2.6/xfs_trace.c +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Copyright (c) 2009, Christoph Hellwig - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_da_btree.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_btree.h" -#include "xfs_mount.h" -#include "xfs_ialloc.h" -#include "xfs_itable.h" -#include "xfs_alloc.h" -#include "xfs_bmap.h" -#include "xfs_attr.h" -#include "xfs_attr_leaf.h" -#include "xfs_log_priv.h" -#include "xfs_buf_item.h" -#include "xfs_quota.h" -#include "xfs_iomap.h" -#include "xfs_aops.h" -#include "xfs_dquot_item.h" -#include "xfs_dquot.h" -#include "xfs_log_recover.h" -#include "xfs_inode_item.h" - -/* - * We include this last to have the helpers above available for the trace - * event implementations. - */ -#define CREATE_TRACE_POINTS -#include "xfs_trace.h" diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h deleted file mode 100644 index 690fc7a7bd72..000000000000 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ /dev/null @@ -1,1746 +0,0 @@ -/* - * Copyright (c) 2009, Christoph Hellwig - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#undef TRACE_SYSTEM -#define TRACE_SYSTEM xfs - -#if !defined(_TRACE_XFS_H) || defined(TRACE_HEADER_MULTI_READ) -#define _TRACE_XFS_H - -#include - -struct xfs_agf; -struct xfs_alloc_arg; -struct xfs_attr_list_context; -struct xfs_buf_log_item; -struct xfs_da_args; -struct xfs_da_node_entry; -struct xfs_dquot; -struct xlog_ticket; -struct log; -struct xlog_recover; -struct xlog_recover_item; -struct xfs_buf_log_format; -struct xfs_inode_log_format; - -DECLARE_EVENT_CLASS(xfs_attr_list_class, - TP_PROTO(struct xfs_attr_list_context *ctx), - TP_ARGS(ctx), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(u32, hashval) - __field(u32, blkno) - __field(u32, offset) - __field(void *, alist) - __field(int, bufsize) - __field(int, count) - __field(int, firstu) - __field(int, dupcnt) - __field(int, flags) - ), - TP_fast_assign( - __entry->dev = VFS_I(ctx->dp)->i_sb->s_dev; - __entry->ino = ctx->dp->i_ino; - __entry->hashval = ctx->cursor->hashval; - __entry->blkno = ctx->cursor->blkno; - __entry->offset = ctx->cursor->offset; - __entry->alist = ctx->alist; - __entry->bufsize = ctx->bufsize; - __entry->count = ctx->count; - __entry->firstu = ctx->firstu; - __entry->flags = ctx->flags; - ), - TP_printk("dev %d:%d ino 0x%llx cursor h/b/o 0x%x/0x%x/%u dupcnt %u " - "alist 0x%p size %u count %u firstu %u flags %d %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->hashval, - __entry->blkno, - __entry->offset, - __entry->dupcnt, - __entry->alist, - __entry->bufsize, - __entry->count, - __entry->firstu, - __entry->flags, - __print_flags(__entry->flags, "|", XFS_ATTR_FLAGS) - ) -) - -#define DEFINE_ATTR_LIST_EVENT(name) \ -DEFINE_EVENT(xfs_attr_list_class, name, \ - TP_PROTO(struct xfs_attr_list_context *ctx), \ - TP_ARGS(ctx)) -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_sf); -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_sf_all); -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_leaf); -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_leaf_end); -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_full); -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_add); -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_wrong_blk); -DEFINE_ATTR_LIST_EVENT(xfs_attr_list_notfound); - -DECLARE_EVENT_CLASS(xfs_perag_class, - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int refcount, - unsigned long caller_ip), - TP_ARGS(mp, agno, refcount, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(int, refcount) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = agno; - __entry->refcount = refcount; - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d agno %u refcount %d caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __entry->refcount, - (char *)__entry->caller_ip) -); - -#define DEFINE_PERAG_REF_EVENT(name) \ -DEFINE_EVENT(xfs_perag_class, name, \ - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int refcount, \ - unsigned long caller_ip), \ - TP_ARGS(mp, agno, refcount, caller_ip)) -DEFINE_PERAG_REF_EVENT(xfs_perag_get); -DEFINE_PERAG_REF_EVENT(xfs_perag_get_tag); -DEFINE_PERAG_REF_EVENT(xfs_perag_put); -DEFINE_PERAG_REF_EVENT(xfs_perag_set_reclaim); -DEFINE_PERAG_REF_EVENT(xfs_perag_clear_reclaim); - -TRACE_EVENT(xfs_attr_list_node_descend, - TP_PROTO(struct xfs_attr_list_context *ctx, - struct xfs_da_node_entry *btree), - TP_ARGS(ctx, btree), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(u32, hashval) - __field(u32, blkno) - __field(u32, offset) - __field(void *, alist) - __field(int, bufsize) - __field(int, count) - __field(int, firstu) - __field(int, dupcnt) - __field(int, flags) - __field(u32, bt_hashval) - __field(u32, bt_before) - ), - TP_fast_assign( - __entry->dev = VFS_I(ctx->dp)->i_sb->s_dev; - __entry->ino = ctx->dp->i_ino; - __entry->hashval = ctx->cursor->hashval; - __entry->blkno = ctx->cursor->blkno; - __entry->offset = ctx->cursor->offset; - __entry->alist = ctx->alist; - __entry->bufsize = ctx->bufsize; - __entry->count = ctx->count; - __entry->firstu = ctx->firstu; - __entry->flags = ctx->flags; - __entry->bt_hashval = be32_to_cpu(btree->hashval); - __entry->bt_before = be32_to_cpu(btree->before); - ), - TP_printk("dev %d:%d ino 0x%llx cursor h/b/o 0x%x/0x%x/%u dupcnt %u " - "alist 0x%p size %u count %u firstu %u flags %d %s " - "node hashval %u, node before %u", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->hashval, - __entry->blkno, - __entry->offset, - __entry->dupcnt, - __entry->alist, - __entry->bufsize, - __entry->count, - __entry->firstu, - __entry->flags, - __print_flags(__entry->flags, "|", XFS_ATTR_FLAGS), - __entry->bt_hashval, - __entry->bt_before) -); - -TRACE_EVENT(xfs_iext_insert, - TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, - struct xfs_bmbt_irec *r, int state, unsigned long caller_ip), - TP_ARGS(ip, idx, r, state, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(xfs_extnum_t, idx) - __field(xfs_fileoff_t, startoff) - __field(xfs_fsblock_t, startblock) - __field(xfs_filblks_t, blockcount) - __field(xfs_exntst_t, state) - __field(int, bmap_state) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->idx = idx; - __entry->startoff = r->br_startoff; - __entry->startblock = r->br_startblock; - __entry->blockcount = r->br_blockcount; - __entry->state = r->br_state; - __entry->bmap_state = state; - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d ino 0x%llx state %s idx %ld " - "offset %lld block %lld count %lld flag %d caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS), - (long)__entry->idx, - __entry->startoff, - (__int64_t)__entry->startblock, - __entry->blockcount, - __entry->state, - (char *)__entry->caller_ip) -); - -DECLARE_EVENT_CLASS(xfs_bmap_class, - TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, int state, - unsigned long caller_ip), - TP_ARGS(ip, idx, state, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(xfs_extnum_t, idx) - __field(xfs_fileoff_t, startoff) - __field(xfs_fsblock_t, startblock) - __field(xfs_filblks_t, blockcount) - __field(xfs_exntst_t, state) - __field(int, bmap_state) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - struct xfs_ifork *ifp = (state & BMAP_ATTRFORK) ? - ip->i_afp : &ip->i_df; - struct xfs_bmbt_irec r; - - xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &r); - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->idx = idx; - __entry->startoff = r.br_startoff; - __entry->startblock = r.br_startblock; - __entry->blockcount = r.br_blockcount; - __entry->state = r.br_state; - __entry->bmap_state = state; - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d ino 0x%llx state %s idx %ld " - "offset %lld block %lld count %lld flag %d caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS), - (long)__entry->idx, - __entry->startoff, - (__int64_t)__entry->startblock, - __entry->blockcount, - __entry->state, - (char *)__entry->caller_ip) -) - -#define DEFINE_BMAP_EVENT(name) \ -DEFINE_EVENT(xfs_bmap_class, name, \ - TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, int state, \ - unsigned long caller_ip), \ - TP_ARGS(ip, idx, state, caller_ip)) -DEFINE_BMAP_EVENT(xfs_iext_remove); -DEFINE_BMAP_EVENT(xfs_bmap_pre_update); -DEFINE_BMAP_EVENT(xfs_bmap_post_update); -DEFINE_BMAP_EVENT(xfs_extlist); - -DECLARE_EVENT_CLASS(xfs_buf_class, - TP_PROTO(struct xfs_buf *bp, unsigned long caller_ip), - TP_ARGS(bp, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_daddr_t, bno) - __field(size_t, buffer_length) - __field(int, hold) - __field(int, pincount) - __field(unsigned, lockval) - __field(unsigned, flags) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = bp->b_target->bt_dev; - __entry->bno = bp->b_bn; - __entry->buffer_length = bp->b_buffer_length; - __entry->hold = atomic_read(&bp->b_hold); - __entry->pincount = atomic_read(&bp->b_pin_count); - __entry->lockval = bp->b_sema.count; - __entry->flags = bp->b_flags; - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " - "lock %d flags %s caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - (unsigned long long)__entry->bno, - __entry->buffer_length, - __entry->hold, - __entry->pincount, - __entry->lockval, - __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), - (void *)__entry->caller_ip) -) - -#define DEFINE_BUF_EVENT(name) \ -DEFINE_EVENT(xfs_buf_class, name, \ - TP_PROTO(struct xfs_buf *bp, unsigned long caller_ip), \ - TP_ARGS(bp, caller_ip)) -DEFINE_BUF_EVENT(xfs_buf_init); -DEFINE_BUF_EVENT(xfs_buf_free); -DEFINE_BUF_EVENT(xfs_buf_hold); -DEFINE_BUF_EVENT(xfs_buf_rele); -DEFINE_BUF_EVENT(xfs_buf_iodone); -DEFINE_BUF_EVENT(xfs_buf_iorequest); -DEFINE_BUF_EVENT(xfs_buf_bawrite); -DEFINE_BUF_EVENT(xfs_buf_bdwrite); -DEFINE_BUF_EVENT(xfs_buf_lock); -DEFINE_BUF_EVENT(xfs_buf_lock_done); -DEFINE_BUF_EVENT(xfs_buf_trylock); -DEFINE_BUF_EVENT(xfs_buf_unlock); -DEFINE_BUF_EVENT(xfs_buf_iowait); -DEFINE_BUF_EVENT(xfs_buf_iowait_done); -DEFINE_BUF_EVENT(xfs_buf_delwri_queue); -DEFINE_BUF_EVENT(xfs_buf_delwri_dequeue); -DEFINE_BUF_EVENT(xfs_buf_delwri_split); -DEFINE_BUF_EVENT(xfs_buf_get_uncached); -DEFINE_BUF_EVENT(xfs_bdstrat_shut); -DEFINE_BUF_EVENT(xfs_buf_item_relse); -DEFINE_BUF_EVENT(xfs_buf_item_iodone); -DEFINE_BUF_EVENT(xfs_buf_item_iodone_async); -DEFINE_BUF_EVENT(xfs_buf_error_relse); -DEFINE_BUF_EVENT(xfs_trans_read_buf_io); -DEFINE_BUF_EVENT(xfs_trans_read_buf_shut); - -/* not really buffer traces, but the buf provides useful information */ -DEFINE_BUF_EVENT(xfs_btree_corrupt); -DEFINE_BUF_EVENT(xfs_da_btree_corrupt); -DEFINE_BUF_EVENT(xfs_reset_dqcounts); -DEFINE_BUF_EVENT(xfs_inode_item_push); - -/* pass flags explicitly */ -DECLARE_EVENT_CLASS(xfs_buf_flags_class, - TP_PROTO(struct xfs_buf *bp, unsigned flags, unsigned long caller_ip), - TP_ARGS(bp, flags, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_daddr_t, bno) - __field(size_t, buffer_length) - __field(int, hold) - __field(int, pincount) - __field(unsigned, lockval) - __field(unsigned, flags) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = bp->b_target->bt_dev; - __entry->bno = bp->b_bn; - __entry->buffer_length = bp->b_buffer_length; - __entry->flags = flags; - __entry->hold = atomic_read(&bp->b_hold); - __entry->pincount = atomic_read(&bp->b_pin_count); - __entry->lockval = bp->b_sema.count; - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " - "lock %d flags %s caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - (unsigned long long)__entry->bno, - __entry->buffer_length, - __entry->hold, - __entry->pincount, - __entry->lockval, - __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), - (void *)__entry->caller_ip) -) - -#define DEFINE_BUF_FLAGS_EVENT(name) \ -DEFINE_EVENT(xfs_buf_flags_class, name, \ - TP_PROTO(struct xfs_buf *bp, unsigned flags, unsigned long caller_ip), \ - TP_ARGS(bp, flags, caller_ip)) -DEFINE_BUF_FLAGS_EVENT(xfs_buf_find); -DEFINE_BUF_FLAGS_EVENT(xfs_buf_get); -DEFINE_BUF_FLAGS_EVENT(xfs_buf_read); - -TRACE_EVENT(xfs_buf_ioerror, - TP_PROTO(struct xfs_buf *bp, int error, unsigned long caller_ip), - TP_ARGS(bp, error, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_daddr_t, bno) - __field(size_t, buffer_length) - __field(unsigned, flags) - __field(int, hold) - __field(int, pincount) - __field(unsigned, lockval) - __field(int, error) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = bp->b_target->bt_dev; - __entry->bno = bp->b_bn; - __entry->buffer_length = bp->b_buffer_length; - __entry->hold = atomic_read(&bp->b_hold); - __entry->pincount = atomic_read(&bp->b_pin_count); - __entry->lockval = bp->b_sema.count; - __entry->error = error; - __entry->flags = bp->b_flags; - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " - "lock %d error %d flags %s caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - (unsigned long long)__entry->bno, - __entry->buffer_length, - __entry->hold, - __entry->pincount, - __entry->lockval, - __entry->error, - __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), - (void *)__entry->caller_ip) -); - -DECLARE_EVENT_CLASS(xfs_buf_item_class, - TP_PROTO(struct xfs_buf_log_item *bip), - TP_ARGS(bip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_daddr_t, buf_bno) - __field(size_t, buf_len) - __field(int, buf_hold) - __field(int, buf_pincount) - __field(int, buf_lockval) - __field(unsigned, buf_flags) - __field(unsigned, bli_recur) - __field(int, bli_refcount) - __field(unsigned, bli_flags) - __field(void *, li_desc) - __field(unsigned, li_flags) - ), - TP_fast_assign( - __entry->dev = bip->bli_buf->b_target->bt_dev; - __entry->bli_flags = bip->bli_flags; - __entry->bli_recur = bip->bli_recur; - __entry->bli_refcount = atomic_read(&bip->bli_refcount); - __entry->buf_bno = bip->bli_buf->b_bn; - __entry->buf_len = bip->bli_buf->b_buffer_length; - __entry->buf_flags = bip->bli_buf->b_flags; - __entry->buf_hold = atomic_read(&bip->bli_buf->b_hold); - __entry->buf_pincount = atomic_read(&bip->bli_buf->b_pin_count); - __entry->buf_lockval = bip->bli_buf->b_sema.count; - __entry->li_desc = bip->bli_item.li_desc; - __entry->li_flags = bip->bli_item.li_flags; - ), - TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " - "lock %d flags %s recur %d refcount %d bliflags %s " - "lidesc 0x%p liflags %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - (unsigned long long)__entry->buf_bno, - __entry->buf_len, - __entry->buf_hold, - __entry->buf_pincount, - __entry->buf_lockval, - __print_flags(__entry->buf_flags, "|", XFS_BUF_FLAGS), - __entry->bli_recur, - __entry->bli_refcount, - __print_flags(__entry->bli_flags, "|", XFS_BLI_FLAGS), - __entry->li_desc, - __print_flags(__entry->li_flags, "|", XFS_LI_FLAGS)) -) - -#define DEFINE_BUF_ITEM_EVENT(name) \ -DEFINE_EVENT(xfs_buf_item_class, name, \ - TP_PROTO(struct xfs_buf_log_item *bip), \ - TP_ARGS(bip)) -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size_stale); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format_stale); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pin); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unpin); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unpin_stale); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_trylock); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock_stale); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_committed); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_push); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pushbuf); -DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf); -DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf_recur); -DEFINE_BUF_ITEM_EVENT(xfs_trans_getsb); -DEFINE_BUF_ITEM_EVENT(xfs_trans_getsb_recur); -DEFINE_BUF_ITEM_EVENT(xfs_trans_read_buf); -DEFINE_BUF_ITEM_EVENT(xfs_trans_read_buf_recur); -DEFINE_BUF_ITEM_EVENT(xfs_trans_log_buf); -DEFINE_BUF_ITEM_EVENT(xfs_trans_brelse); -DEFINE_BUF_ITEM_EVENT(xfs_trans_bjoin); -DEFINE_BUF_ITEM_EVENT(xfs_trans_bhold); -DEFINE_BUF_ITEM_EVENT(xfs_trans_bhold_release); -DEFINE_BUF_ITEM_EVENT(xfs_trans_binval); - -DECLARE_EVENT_CLASS(xfs_lock_class, - TP_PROTO(struct xfs_inode *ip, unsigned lock_flags, - unsigned long caller_ip), - TP_ARGS(ip, lock_flags, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(int, lock_flags) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->lock_flags = lock_flags; - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d ino 0x%llx flags %s caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __print_flags(__entry->lock_flags, "|", XFS_LOCK_FLAGS), - (void *)__entry->caller_ip) -) - -#define DEFINE_LOCK_EVENT(name) \ -DEFINE_EVENT(xfs_lock_class, name, \ - TP_PROTO(struct xfs_inode *ip, unsigned lock_flags, \ - unsigned long caller_ip), \ - TP_ARGS(ip, lock_flags, caller_ip)) -DEFINE_LOCK_EVENT(xfs_ilock); -DEFINE_LOCK_EVENT(xfs_ilock_nowait); -DEFINE_LOCK_EVENT(xfs_ilock_demote); -DEFINE_LOCK_EVENT(xfs_iunlock); - -DECLARE_EVENT_CLASS(xfs_inode_class, - TP_PROTO(struct xfs_inode *ip), - TP_ARGS(ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - ), - TP_printk("dev %d:%d ino 0x%llx", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino) -) - -#define DEFINE_INODE_EVENT(name) \ -DEFINE_EVENT(xfs_inode_class, name, \ - TP_PROTO(struct xfs_inode *ip), \ - TP_ARGS(ip)) -DEFINE_INODE_EVENT(xfs_iget_skip); -DEFINE_INODE_EVENT(xfs_iget_reclaim); -DEFINE_INODE_EVENT(xfs_iget_reclaim_fail); -DEFINE_INODE_EVENT(xfs_iget_hit); -DEFINE_INODE_EVENT(xfs_iget_miss); - -DEFINE_INODE_EVENT(xfs_getattr); -DEFINE_INODE_EVENT(xfs_setattr); -DEFINE_INODE_EVENT(xfs_readlink); -DEFINE_INODE_EVENT(xfs_alloc_file_space); -DEFINE_INODE_EVENT(xfs_free_file_space); -DEFINE_INODE_EVENT(xfs_readdir); -#ifdef CONFIG_XFS_POSIX_ACL -DEFINE_INODE_EVENT(xfs_get_acl); -#endif -DEFINE_INODE_EVENT(xfs_vm_bmap); -DEFINE_INODE_EVENT(xfs_file_ioctl); -DEFINE_INODE_EVENT(xfs_file_compat_ioctl); -DEFINE_INODE_EVENT(xfs_ioctl_setattr); -DEFINE_INODE_EVENT(xfs_file_fsync); -DEFINE_INODE_EVENT(xfs_destroy_inode); -DEFINE_INODE_EVENT(xfs_write_inode); -DEFINE_INODE_EVENT(xfs_evict_inode); - -DEFINE_INODE_EVENT(xfs_dquot_dqalloc); -DEFINE_INODE_EVENT(xfs_dquot_dqdetach); - -DECLARE_EVENT_CLASS(xfs_iref_class, - TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), - TP_ARGS(ip, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(int, count) - __field(int, pincount) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->count = atomic_read(&VFS_I(ip)->i_count); - __entry->pincount = atomic_read(&ip->i_pincount); - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d ino 0x%llx count %d pincount %d caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->count, - __entry->pincount, - (char *)__entry->caller_ip) -) - -#define DEFINE_IREF_EVENT(name) \ -DEFINE_EVENT(xfs_iref_class, name, \ - TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), \ - TP_ARGS(ip, caller_ip)) -DEFINE_IREF_EVENT(xfs_ihold); -DEFINE_IREF_EVENT(xfs_irele); -DEFINE_IREF_EVENT(xfs_inode_pin); -DEFINE_IREF_EVENT(xfs_inode_unpin); -DEFINE_IREF_EVENT(xfs_inode_unpin_nowait); - -DECLARE_EVENT_CLASS(xfs_namespace_class, - TP_PROTO(struct xfs_inode *dp, struct xfs_name *name), - TP_ARGS(dp, name), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, dp_ino) - __dynamic_array(char, name, name->len) - ), - TP_fast_assign( - __entry->dev = VFS_I(dp)->i_sb->s_dev; - __entry->dp_ino = dp->i_ino; - memcpy(__get_str(name), name->name, name->len); - ), - TP_printk("dev %d:%d dp ino 0x%llx name %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->dp_ino, - __get_str(name)) -) - -#define DEFINE_NAMESPACE_EVENT(name) \ -DEFINE_EVENT(xfs_namespace_class, name, \ - TP_PROTO(struct xfs_inode *dp, struct xfs_name *name), \ - TP_ARGS(dp, name)) -DEFINE_NAMESPACE_EVENT(xfs_remove); -DEFINE_NAMESPACE_EVENT(xfs_link); -DEFINE_NAMESPACE_EVENT(xfs_lookup); -DEFINE_NAMESPACE_EVENT(xfs_create); -DEFINE_NAMESPACE_EVENT(xfs_symlink); - -TRACE_EVENT(xfs_rename, - TP_PROTO(struct xfs_inode *src_dp, struct xfs_inode *target_dp, - struct xfs_name *src_name, struct xfs_name *target_name), - TP_ARGS(src_dp, target_dp, src_name, target_name), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, src_dp_ino) - __field(xfs_ino_t, target_dp_ino) - __dynamic_array(char, src_name, src_name->len) - __dynamic_array(char, target_name, target_name->len) - ), - TP_fast_assign( - __entry->dev = VFS_I(src_dp)->i_sb->s_dev; - __entry->src_dp_ino = src_dp->i_ino; - __entry->target_dp_ino = target_dp->i_ino; - memcpy(__get_str(src_name), src_name->name, src_name->len); - memcpy(__get_str(target_name), target_name->name, target_name->len); - ), - TP_printk("dev %d:%d src dp ino 0x%llx target dp ino 0x%llx" - " src name %s target name %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->src_dp_ino, - __entry->target_dp_ino, - __get_str(src_name), - __get_str(target_name)) -) - -DECLARE_EVENT_CLASS(xfs_dquot_class, - TP_PROTO(struct xfs_dquot *dqp), - TP_ARGS(dqp), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(u32, id) - __field(unsigned, flags) - __field(unsigned, nrefs) - __field(unsigned long long, res_bcount) - __field(unsigned long long, bcount) - __field(unsigned long long, icount) - __field(unsigned long long, blk_hardlimit) - __field(unsigned long long, blk_softlimit) - __field(unsigned long long, ino_hardlimit) - __field(unsigned long long, ino_softlimit) - ), \ - TP_fast_assign( - __entry->dev = dqp->q_mount->m_super->s_dev; - __entry->id = be32_to_cpu(dqp->q_core.d_id); - __entry->flags = dqp->dq_flags; - __entry->nrefs = dqp->q_nrefs; - __entry->res_bcount = dqp->q_res_bcount; - __entry->bcount = be64_to_cpu(dqp->q_core.d_bcount); - __entry->icount = be64_to_cpu(dqp->q_core.d_icount); - __entry->blk_hardlimit = - be64_to_cpu(dqp->q_core.d_blk_hardlimit); - __entry->blk_softlimit = - be64_to_cpu(dqp->q_core.d_blk_softlimit); - __entry->ino_hardlimit = - be64_to_cpu(dqp->q_core.d_ino_hardlimit); - __entry->ino_softlimit = - be64_to_cpu(dqp->q_core.d_ino_softlimit); - ), - TP_printk("dev %d:%d id 0x%x flags %s nrefs %u res_bc 0x%llx " - "bcnt 0x%llx bhardlimit 0x%llx bsoftlimit 0x%llx " - "icnt 0x%llx ihardlimit 0x%llx isoftlimit 0x%llx]", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->id, - __print_flags(__entry->flags, "|", XFS_DQ_FLAGS), - __entry->nrefs, - __entry->res_bcount, - __entry->bcount, - __entry->blk_hardlimit, - __entry->blk_softlimit, - __entry->icount, - __entry->ino_hardlimit, - __entry->ino_softlimit) -) - -#define DEFINE_DQUOT_EVENT(name) \ -DEFINE_EVENT(xfs_dquot_class, name, \ - TP_PROTO(struct xfs_dquot *dqp), \ - TP_ARGS(dqp)) -DEFINE_DQUOT_EVENT(xfs_dqadjust); -DEFINE_DQUOT_EVENT(xfs_dqreclaim_want); -DEFINE_DQUOT_EVENT(xfs_dqreclaim_dirty); -DEFINE_DQUOT_EVENT(xfs_dqreclaim_unlink); -DEFINE_DQUOT_EVENT(xfs_dqattach_found); -DEFINE_DQUOT_EVENT(xfs_dqattach_get); -DEFINE_DQUOT_EVENT(xfs_dqinit); -DEFINE_DQUOT_EVENT(xfs_dqreuse); -DEFINE_DQUOT_EVENT(xfs_dqalloc); -DEFINE_DQUOT_EVENT(xfs_dqtobp_read); -DEFINE_DQUOT_EVENT(xfs_dqread); -DEFINE_DQUOT_EVENT(xfs_dqread_fail); -DEFINE_DQUOT_EVENT(xfs_dqlookup_found); -DEFINE_DQUOT_EVENT(xfs_dqlookup_want); -DEFINE_DQUOT_EVENT(xfs_dqlookup_freelist); -DEFINE_DQUOT_EVENT(xfs_dqlookup_done); -DEFINE_DQUOT_EVENT(xfs_dqget_hit); -DEFINE_DQUOT_EVENT(xfs_dqget_miss); -DEFINE_DQUOT_EVENT(xfs_dqput); -DEFINE_DQUOT_EVENT(xfs_dqput_wait); -DEFINE_DQUOT_EVENT(xfs_dqput_free); -DEFINE_DQUOT_EVENT(xfs_dqrele); -DEFINE_DQUOT_EVENT(xfs_dqflush); -DEFINE_DQUOT_EVENT(xfs_dqflush_force); -DEFINE_DQUOT_EVENT(xfs_dqflush_done); - -DECLARE_EVENT_CLASS(xfs_loggrant_class, - TP_PROTO(struct log *log, struct xlog_ticket *tic), - TP_ARGS(log, tic), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(unsigned, trans_type) - __field(char, ocnt) - __field(char, cnt) - __field(int, curr_res) - __field(int, unit_res) - __field(unsigned int, flags) - __field(int, reserveq) - __field(int, writeq) - __field(int, grant_reserve_cycle) - __field(int, grant_reserve_bytes) - __field(int, grant_write_cycle) - __field(int, grant_write_bytes) - __field(int, curr_cycle) - __field(int, curr_block) - __field(xfs_lsn_t, tail_lsn) - ), - TP_fast_assign( - __entry->dev = log->l_mp->m_super->s_dev; - __entry->trans_type = tic->t_trans_type; - __entry->ocnt = tic->t_ocnt; - __entry->cnt = tic->t_cnt; - __entry->curr_res = tic->t_curr_res; - __entry->unit_res = tic->t_unit_res; - __entry->flags = tic->t_flags; - __entry->reserveq = list_empty(&log->l_reserveq); - __entry->writeq = list_empty(&log->l_writeq); - xlog_crack_grant_head(&log->l_grant_reserve_head, - &__entry->grant_reserve_cycle, - &__entry->grant_reserve_bytes); - xlog_crack_grant_head(&log->l_grant_write_head, - &__entry->grant_write_cycle, - &__entry->grant_write_bytes); - __entry->curr_cycle = log->l_curr_cycle; - __entry->curr_block = log->l_curr_block; - __entry->tail_lsn = atomic64_read(&log->l_tail_lsn); - ), - TP_printk("dev %d:%d type %s t_ocnt %u t_cnt %u t_curr_res %u " - "t_unit_res %u t_flags %s reserveq %s " - "writeq %s grant_reserve_cycle %d " - "grant_reserve_bytes %d grant_write_cycle %d " - "grant_write_bytes %d curr_cycle %d curr_block %d " - "tail_cycle %d tail_block %d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __print_symbolic(__entry->trans_type, XFS_TRANS_TYPES), - __entry->ocnt, - __entry->cnt, - __entry->curr_res, - __entry->unit_res, - __print_flags(__entry->flags, "|", XLOG_TIC_FLAGS), - __entry->reserveq ? "empty" : "active", - __entry->writeq ? "empty" : "active", - __entry->grant_reserve_cycle, - __entry->grant_reserve_bytes, - __entry->grant_write_cycle, - __entry->grant_write_bytes, - __entry->curr_cycle, - __entry->curr_block, - CYCLE_LSN(__entry->tail_lsn), - BLOCK_LSN(__entry->tail_lsn) - ) -) - -#define DEFINE_LOGGRANT_EVENT(name) \ -DEFINE_EVENT(xfs_loggrant_class, name, \ - TP_PROTO(struct log *log, struct xlog_ticket *tic), \ - TP_ARGS(log, tic)) -DEFINE_LOGGRANT_EVENT(xfs_log_done_nonperm); -DEFINE_LOGGRANT_EVENT(xfs_log_done_perm); -DEFINE_LOGGRANT_EVENT(xfs_log_reserve); -DEFINE_LOGGRANT_EVENT(xfs_log_umount_write); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_enter); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_exit); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_error); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_sleep1); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake1); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_sleep2); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake2); -DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake_up); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_enter); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_exit); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_error); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_sleep1); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake1); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_sleep2); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake2); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake_up); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_enter); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_exit); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_sub); -DEFINE_LOGGRANT_EVENT(xfs_log_ungrant_enter); -DEFINE_LOGGRANT_EVENT(xfs_log_ungrant_exit); -DEFINE_LOGGRANT_EVENT(xfs_log_ungrant_sub); - -DECLARE_EVENT_CLASS(xfs_file_class, - TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset, int flags), - TP_ARGS(ip, count, offset, flags), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(xfs_fsize_t, size) - __field(xfs_fsize_t, new_size) - __field(loff_t, offset) - __field(size_t, count) - __field(int, flags) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->size = ip->i_d.di_size; - __entry->new_size = ip->i_new_size; - __entry->offset = offset; - __entry->count = count; - __entry->flags = flags; - ), - TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx " - "offset 0x%llx count 0x%zx ioflags %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->size, - __entry->new_size, - __entry->offset, - __entry->count, - __print_flags(__entry->flags, "|", XFS_IO_FLAGS)) -) - -#define DEFINE_RW_EVENT(name) \ -DEFINE_EVENT(xfs_file_class, name, \ - TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset, int flags), \ - TP_ARGS(ip, count, offset, flags)) -DEFINE_RW_EVENT(xfs_file_read); -DEFINE_RW_EVENT(xfs_file_buffered_write); -DEFINE_RW_EVENT(xfs_file_direct_write); -DEFINE_RW_EVENT(xfs_file_splice_read); -DEFINE_RW_EVENT(xfs_file_splice_write); - -DECLARE_EVENT_CLASS(xfs_page_class, - TP_PROTO(struct inode *inode, struct page *page, unsigned long off), - TP_ARGS(inode, page, off), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(pgoff_t, pgoff) - __field(loff_t, size) - __field(unsigned long, offset) - __field(int, delalloc) - __field(int, unwritten) - ), - TP_fast_assign( - int delalloc = -1, unwritten = -1; - - if (page_has_buffers(page)) - xfs_count_page_state(page, &delalloc, &unwritten); - __entry->dev = inode->i_sb->s_dev; - __entry->ino = XFS_I(inode)->i_ino; - __entry->pgoff = page_offset(page); - __entry->size = i_size_read(inode); - __entry->offset = off; - __entry->delalloc = delalloc; - __entry->unwritten = unwritten; - ), - TP_printk("dev %d:%d ino 0x%llx pgoff 0x%lx size 0x%llx offset %lx " - "delalloc %d unwritten %d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->pgoff, - __entry->size, - __entry->offset, - __entry->delalloc, - __entry->unwritten) -) - -#define DEFINE_PAGE_EVENT(name) \ -DEFINE_EVENT(xfs_page_class, name, \ - TP_PROTO(struct inode *inode, struct page *page, unsigned long off), \ - TP_ARGS(inode, page, off)) -DEFINE_PAGE_EVENT(xfs_writepage); -DEFINE_PAGE_EVENT(xfs_releasepage); -DEFINE_PAGE_EVENT(xfs_invalidatepage); - -DECLARE_EVENT_CLASS(xfs_imap_class, - TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count, - int type, struct xfs_bmbt_irec *irec), - TP_ARGS(ip, offset, count, type, irec), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(loff_t, size) - __field(loff_t, new_size) - __field(loff_t, offset) - __field(size_t, count) - __field(int, type) - __field(xfs_fileoff_t, startoff) - __field(xfs_fsblock_t, startblock) - __field(xfs_filblks_t, blockcount) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->size = ip->i_d.di_size; - __entry->new_size = ip->i_new_size; - __entry->offset = offset; - __entry->count = count; - __entry->type = type; - __entry->startoff = irec ? irec->br_startoff : 0; - __entry->startblock = irec ? irec->br_startblock : 0; - __entry->blockcount = irec ? irec->br_blockcount : 0; - ), - TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx " - "offset 0x%llx count %zd type %s " - "startoff 0x%llx startblock %lld blockcount 0x%llx", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->size, - __entry->new_size, - __entry->offset, - __entry->count, - __print_symbolic(__entry->type, XFS_IO_TYPES), - __entry->startoff, - (__int64_t)__entry->startblock, - __entry->blockcount) -) - -#define DEFINE_IOMAP_EVENT(name) \ -DEFINE_EVENT(xfs_imap_class, name, \ - TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count, \ - int type, struct xfs_bmbt_irec *irec), \ - TP_ARGS(ip, offset, count, type, irec)) -DEFINE_IOMAP_EVENT(xfs_map_blocks_found); -DEFINE_IOMAP_EVENT(xfs_map_blocks_alloc); -DEFINE_IOMAP_EVENT(xfs_get_blocks_found); -DEFINE_IOMAP_EVENT(xfs_get_blocks_alloc); - -DECLARE_EVENT_CLASS(xfs_simple_io_class, - TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count), - TP_ARGS(ip, offset, count), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(loff_t, isize) - __field(loff_t, disize) - __field(loff_t, new_size) - __field(loff_t, offset) - __field(size_t, count) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->isize = ip->i_size; - __entry->disize = ip->i_d.di_size; - __entry->new_size = ip->i_new_size; - __entry->offset = offset; - __entry->count = count; - ), - TP_printk("dev %d:%d ino 0x%llx isize 0x%llx disize 0x%llx new_size 0x%llx " - "offset 0x%llx count %zd", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->isize, - __entry->disize, - __entry->new_size, - __entry->offset, - __entry->count) -); - -#define DEFINE_SIMPLE_IO_EVENT(name) \ -DEFINE_EVENT(xfs_simple_io_class, name, \ - TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count), \ - TP_ARGS(ip, offset, count)) -DEFINE_SIMPLE_IO_EVENT(xfs_delalloc_enospc); -DEFINE_SIMPLE_IO_EVENT(xfs_unwritten_convert); -DEFINE_SIMPLE_IO_EVENT(xfs_get_blocks_notfound); -DEFINE_SIMPLE_IO_EVENT(xfs_setfilesize); - -DECLARE_EVENT_CLASS(xfs_itrunc_class, - TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size), - TP_ARGS(ip, new_size), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(xfs_fsize_t, size) - __field(xfs_fsize_t, new_size) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->size = ip->i_d.di_size; - __entry->new_size = new_size; - ), - TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->size, - __entry->new_size) -) - -#define DEFINE_ITRUNC_EVENT(name) \ -DEFINE_EVENT(xfs_itrunc_class, name, \ - TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size), \ - TP_ARGS(ip, new_size)) -DEFINE_ITRUNC_EVENT(xfs_itruncate_data_start); -DEFINE_ITRUNC_EVENT(xfs_itruncate_data_end); - -TRACE_EVENT(xfs_pagecache_inval, - TP_PROTO(struct xfs_inode *ip, xfs_off_t start, xfs_off_t finish), - TP_ARGS(ip, start, finish), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(xfs_fsize_t, size) - __field(xfs_off_t, start) - __field(xfs_off_t, finish) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->size = ip->i_d.di_size; - __entry->start = start; - __entry->finish = finish; - ), - TP_printk("dev %d:%d ino 0x%llx size 0x%llx start 0x%llx finish 0x%llx", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->size, - __entry->start, - __entry->finish) -); - -TRACE_EVENT(xfs_bunmap, - TP_PROTO(struct xfs_inode *ip, xfs_fileoff_t bno, xfs_filblks_t len, - int flags, unsigned long caller_ip), - TP_ARGS(ip, bno, len, flags, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(xfs_fsize_t, size) - __field(xfs_fileoff_t, bno) - __field(xfs_filblks_t, len) - __field(unsigned long, caller_ip) - __field(int, flags) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->size = ip->i_d.di_size; - __entry->bno = bno; - __entry->len = len; - __entry->caller_ip = caller_ip; - __entry->flags = flags; - ), - TP_printk("dev %d:%d ino 0x%llx size 0x%llx bno 0x%llx len 0x%llx" - "flags %s caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->size, - __entry->bno, - __entry->len, - __print_flags(__entry->flags, "|", XFS_BMAPI_FLAGS), - (void *)__entry->caller_ip) - -); - -DECLARE_EVENT_CLASS(xfs_busy_class, - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_agblock_t agbno, xfs_extlen_t len), - TP_ARGS(mp, agno, agbno, len), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(xfs_agblock_t, agbno) - __field(xfs_extlen_t, len) - ), - TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = agno; - __entry->agbno = agbno; - __entry->len = len; - ), - TP_printk("dev %d:%d agno %u agbno %u len %u", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __entry->agbno, - __entry->len) -); -#define DEFINE_BUSY_EVENT(name) \ -DEFINE_EVENT(xfs_busy_class, name, \ - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \ - xfs_agblock_t agbno, xfs_extlen_t len), \ - TP_ARGS(mp, agno, agbno, len)) -DEFINE_BUSY_EVENT(xfs_alloc_busy); -DEFINE_BUSY_EVENT(xfs_alloc_busy_enomem); -DEFINE_BUSY_EVENT(xfs_alloc_busy_force); -DEFINE_BUSY_EVENT(xfs_alloc_busy_reuse); -DEFINE_BUSY_EVENT(xfs_alloc_busy_clear); - -TRACE_EVENT(xfs_alloc_busy_trim, - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_agblock_t agbno, xfs_extlen_t len, - xfs_agblock_t tbno, xfs_extlen_t tlen), - TP_ARGS(mp, agno, agbno, len, tbno, tlen), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(xfs_agblock_t, agbno) - __field(xfs_extlen_t, len) - __field(xfs_agblock_t, tbno) - __field(xfs_extlen_t, tlen) - ), - TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = agno; - __entry->agbno = agbno; - __entry->len = len; - __entry->tbno = tbno; - __entry->tlen = tlen; - ), - TP_printk("dev %d:%d agno %u agbno %u len %u tbno %u tlen %u", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __entry->agbno, - __entry->len, - __entry->tbno, - __entry->tlen) -); - -TRACE_EVENT(xfs_trans_commit_lsn, - TP_PROTO(struct xfs_trans *trans), - TP_ARGS(trans), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(struct xfs_trans *, tp) - __field(xfs_lsn_t, lsn) - ), - TP_fast_assign( - __entry->dev = trans->t_mountp->m_super->s_dev; - __entry->tp = trans; - __entry->lsn = trans->t_commit_lsn; - ), - TP_printk("dev %d:%d trans 0x%p commit_lsn 0x%llx", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->tp, - __entry->lsn) -); - -TRACE_EVENT(xfs_agf, - TP_PROTO(struct xfs_mount *mp, struct xfs_agf *agf, int flags, - unsigned long caller_ip), - TP_ARGS(mp, agf, flags, caller_ip), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(int, flags) - __field(__u32, length) - __field(__u32, bno_root) - __field(__u32, cnt_root) - __field(__u32, bno_level) - __field(__u32, cnt_level) - __field(__u32, flfirst) - __field(__u32, fllast) - __field(__u32, flcount) - __field(__u32, freeblks) - __field(__u32, longest) - __field(unsigned long, caller_ip) - ), - TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = be32_to_cpu(agf->agf_seqno), - __entry->flags = flags; - __entry->length = be32_to_cpu(agf->agf_length), - __entry->bno_root = be32_to_cpu(agf->agf_roots[XFS_BTNUM_BNO]), - __entry->cnt_root = be32_to_cpu(agf->agf_roots[XFS_BTNUM_CNT]), - __entry->bno_level = - be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]), - __entry->cnt_level = - be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNT]), - __entry->flfirst = be32_to_cpu(agf->agf_flfirst), - __entry->fllast = be32_to_cpu(agf->agf_fllast), - __entry->flcount = be32_to_cpu(agf->agf_flcount), - __entry->freeblks = be32_to_cpu(agf->agf_freeblks), - __entry->longest = be32_to_cpu(agf->agf_longest); - __entry->caller_ip = caller_ip; - ), - TP_printk("dev %d:%d agno %u flags %s length %u roots b %u c %u " - "levels b %u c %u flfirst %u fllast %u flcount %u " - "freeblks %u longest %u caller %pf", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __print_flags(__entry->flags, "|", XFS_AGF_FLAGS), - __entry->length, - __entry->bno_root, - __entry->cnt_root, - __entry->bno_level, - __entry->cnt_level, - __entry->flfirst, - __entry->fllast, - __entry->flcount, - __entry->freeblks, - __entry->longest, - (void *)__entry->caller_ip) -); - -TRACE_EVENT(xfs_free_extent, - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno, - xfs_extlen_t len, bool isfl, int haveleft, int haveright), - TP_ARGS(mp, agno, agbno, len, isfl, haveleft, haveright), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(xfs_agblock_t, agbno) - __field(xfs_extlen_t, len) - __field(int, isfl) - __field(int, haveleft) - __field(int, haveright) - ), - TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = agno; - __entry->agbno = agbno; - __entry->len = len; - __entry->isfl = isfl; - __entry->haveleft = haveleft; - __entry->haveright = haveright; - ), - TP_printk("dev %d:%d agno %u agbno %u len %u isfl %d %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __entry->agbno, - __entry->len, - __entry->isfl, - __entry->haveleft ? - (__entry->haveright ? "both" : "left") : - (__entry->haveright ? "right" : "none")) - -); - -DECLARE_EVENT_CLASS(xfs_alloc_class, - TP_PROTO(struct xfs_alloc_arg *args), - TP_ARGS(args), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(xfs_agblock_t, agbno) - __field(xfs_extlen_t, minlen) - __field(xfs_extlen_t, maxlen) - __field(xfs_extlen_t, mod) - __field(xfs_extlen_t, prod) - __field(xfs_extlen_t, minleft) - __field(xfs_extlen_t, total) - __field(xfs_extlen_t, alignment) - __field(xfs_extlen_t, minalignslop) - __field(xfs_extlen_t, len) - __field(short, type) - __field(short, otype) - __field(char, wasdel) - __field(char, wasfromfl) - __field(char, isfl) - __field(char, userdata) - __field(xfs_fsblock_t, firstblock) - ), - TP_fast_assign( - __entry->dev = args->mp->m_super->s_dev; - __entry->agno = args->agno; - __entry->agbno = args->agbno; - __entry->minlen = args->minlen; - __entry->maxlen = args->maxlen; - __entry->mod = args->mod; - __entry->prod = args->prod; - __entry->minleft = args->minleft; - __entry->total = args->total; - __entry->alignment = args->alignment; - __entry->minalignslop = args->minalignslop; - __entry->len = args->len; - __entry->type = args->type; - __entry->otype = args->otype; - __entry->wasdel = args->wasdel; - __entry->wasfromfl = args->wasfromfl; - __entry->isfl = args->isfl; - __entry->userdata = args->userdata; - __entry->firstblock = args->firstblock; - ), - TP_printk("dev %d:%d agno %u agbno %u minlen %u maxlen %u mod %u " - "prod %u minleft %u total %u alignment %u minalignslop %u " - "len %u type %s otype %s wasdel %d wasfromfl %d isfl %d " - "userdata %d firstblock 0x%llx", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __entry->agbno, - __entry->minlen, - __entry->maxlen, - __entry->mod, - __entry->prod, - __entry->minleft, - __entry->total, - __entry->alignment, - __entry->minalignslop, - __entry->len, - __print_symbolic(__entry->type, XFS_ALLOC_TYPES), - __print_symbolic(__entry->otype, XFS_ALLOC_TYPES), - __entry->wasdel, - __entry->wasfromfl, - __entry->isfl, - __entry->userdata, - (unsigned long long)__entry->firstblock) -) - -#define DEFINE_ALLOC_EVENT(name) \ -DEFINE_EVENT(xfs_alloc_class, name, \ - TP_PROTO(struct xfs_alloc_arg *args), \ - TP_ARGS(args)) -DEFINE_ALLOC_EVENT(xfs_alloc_exact_done); -DEFINE_ALLOC_EVENT(xfs_alloc_exact_notfound); -DEFINE_ALLOC_EVENT(xfs_alloc_exact_error); -DEFINE_ALLOC_EVENT(xfs_alloc_near_nominleft); -DEFINE_ALLOC_EVENT(xfs_alloc_near_first); -DEFINE_ALLOC_EVENT(xfs_alloc_near_greater); -DEFINE_ALLOC_EVENT(xfs_alloc_near_lesser); -DEFINE_ALLOC_EVENT(xfs_alloc_near_error); -DEFINE_ALLOC_EVENT(xfs_alloc_near_noentry); -DEFINE_ALLOC_EVENT(xfs_alloc_near_busy); -DEFINE_ALLOC_EVENT(xfs_alloc_size_neither); -DEFINE_ALLOC_EVENT(xfs_alloc_size_noentry); -DEFINE_ALLOC_EVENT(xfs_alloc_size_nominleft); -DEFINE_ALLOC_EVENT(xfs_alloc_size_done); -DEFINE_ALLOC_EVENT(xfs_alloc_size_error); -DEFINE_ALLOC_EVENT(xfs_alloc_size_busy); -DEFINE_ALLOC_EVENT(xfs_alloc_small_freelist); -DEFINE_ALLOC_EVENT(xfs_alloc_small_notenough); -DEFINE_ALLOC_EVENT(xfs_alloc_small_done); -DEFINE_ALLOC_EVENT(xfs_alloc_small_error); -DEFINE_ALLOC_EVENT(xfs_alloc_vextent_badargs); -DEFINE_ALLOC_EVENT(xfs_alloc_vextent_nofix); -DEFINE_ALLOC_EVENT(xfs_alloc_vextent_noagbp); -DEFINE_ALLOC_EVENT(xfs_alloc_vextent_loopfailed); -DEFINE_ALLOC_EVENT(xfs_alloc_vextent_allfailed); - -DECLARE_EVENT_CLASS(xfs_dir2_class, - TP_PROTO(struct xfs_da_args *args), - TP_ARGS(args), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __dynamic_array(char, name, args->namelen) - __field(int, namelen) - __field(xfs_dahash_t, hashval) - __field(xfs_ino_t, inumber) - __field(int, op_flags) - ), - TP_fast_assign( - __entry->dev = VFS_I(args->dp)->i_sb->s_dev; - __entry->ino = args->dp->i_ino; - if (args->namelen) - memcpy(__get_str(name), args->name, args->namelen); - __entry->namelen = args->namelen; - __entry->hashval = args->hashval; - __entry->inumber = args->inumber; - __entry->op_flags = args->op_flags; - ), - TP_printk("dev %d:%d ino 0x%llx name %.*s namelen %d hashval 0x%x " - "inumber 0x%llx op_flags %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->namelen, - __entry->namelen ? __get_str(name) : NULL, - __entry->namelen, - __entry->hashval, - __entry->inumber, - __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS)) -) - -#define DEFINE_DIR2_EVENT(name) \ -DEFINE_EVENT(xfs_dir2_class, name, \ - TP_PROTO(struct xfs_da_args *args), \ - TP_ARGS(args)) -DEFINE_DIR2_EVENT(xfs_dir2_sf_addname); -DEFINE_DIR2_EVENT(xfs_dir2_sf_create); -DEFINE_DIR2_EVENT(xfs_dir2_sf_lookup); -DEFINE_DIR2_EVENT(xfs_dir2_sf_replace); -DEFINE_DIR2_EVENT(xfs_dir2_sf_removename); -DEFINE_DIR2_EVENT(xfs_dir2_sf_toino4); -DEFINE_DIR2_EVENT(xfs_dir2_sf_toino8); -DEFINE_DIR2_EVENT(xfs_dir2_sf_to_block); -DEFINE_DIR2_EVENT(xfs_dir2_block_addname); -DEFINE_DIR2_EVENT(xfs_dir2_block_lookup); -DEFINE_DIR2_EVENT(xfs_dir2_block_replace); -DEFINE_DIR2_EVENT(xfs_dir2_block_removename); -DEFINE_DIR2_EVENT(xfs_dir2_block_to_sf); -DEFINE_DIR2_EVENT(xfs_dir2_block_to_leaf); -DEFINE_DIR2_EVENT(xfs_dir2_leaf_addname); -DEFINE_DIR2_EVENT(xfs_dir2_leaf_lookup); -DEFINE_DIR2_EVENT(xfs_dir2_leaf_replace); -DEFINE_DIR2_EVENT(xfs_dir2_leaf_removename); -DEFINE_DIR2_EVENT(xfs_dir2_leaf_to_block); -DEFINE_DIR2_EVENT(xfs_dir2_leaf_to_node); -DEFINE_DIR2_EVENT(xfs_dir2_node_addname); -DEFINE_DIR2_EVENT(xfs_dir2_node_lookup); -DEFINE_DIR2_EVENT(xfs_dir2_node_replace); -DEFINE_DIR2_EVENT(xfs_dir2_node_removename); -DEFINE_DIR2_EVENT(xfs_dir2_node_to_leaf); - -DECLARE_EVENT_CLASS(xfs_dir2_space_class, - TP_PROTO(struct xfs_da_args *args, int idx), - TP_ARGS(args, idx), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(int, op_flags) - __field(int, idx) - ), - TP_fast_assign( - __entry->dev = VFS_I(args->dp)->i_sb->s_dev; - __entry->ino = args->dp->i_ino; - __entry->op_flags = args->op_flags; - __entry->idx = idx; - ), - TP_printk("dev %d:%d ino 0x%llx op_flags %s index %d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS), - __entry->idx) -) - -#define DEFINE_DIR2_SPACE_EVENT(name) \ -DEFINE_EVENT(xfs_dir2_space_class, name, \ - TP_PROTO(struct xfs_da_args *args, int idx), \ - TP_ARGS(args, idx)) -DEFINE_DIR2_SPACE_EVENT(xfs_dir2_leafn_add); -DEFINE_DIR2_SPACE_EVENT(xfs_dir2_leafn_remove); -DEFINE_DIR2_SPACE_EVENT(xfs_dir2_grow_inode); -DEFINE_DIR2_SPACE_EVENT(xfs_dir2_shrink_inode); - -TRACE_EVENT(xfs_dir2_leafn_moveents, - TP_PROTO(struct xfs_da_args *args, int src_idx, int dst_idx, int count), - TP_ARGS(args, src_idx, dst_idx, count), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(int, op_flags) - __field(int, src_idx) - __field(int, dst_idx) - __field(int, count) - ), - TP_fast_assign( - __entry->dev = VFS_I(args->dp)->i_sb->s_dev; - __entry->ino = args->dp->i_ino; - __entry->op_flags = args->op_flags; - __entry->src_idx = src_idx; - __entry->dst_idx = dst_idx; - __entry->count = count; - ), - TP_printk("dev %d:%d ino 0x%llx op_flags %s " - "src_idx %d dst_idx %d count %d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS), - __entry->src_idx, - __entry->dst_idx, - __entry->count) -); - -#define XFS_SWAPEXT_INODES \ - { 0, "target" }, \ - { 1, "temp" } - -#define XFS_INODE_FORMAT_STR \ - { 0, "invalid" }, \ - { 1, "local" }, \ - { 2, "extent" }, \ - { 3, "btree" } - -DECLARE_EVENT_CLASS(xfs_swap_extent_class, - TP_PROTO(struct xfs_inode *ip, int which), - TP_ARGS(ip, which), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(int, which) - __field(xfs_ino_t, ino) - __field(int, format) - __field(int, nex) - __field(int, max_nex) - __field(int, broot_size) - __field(int, fork_off) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->which = which; - __entry->ino = ip->i_ino; - __entry->format = ip->i_d.di_format; - __entry->nex = ip->i_d.di_nextents; - __entry->max_nex = ip->i_df.if_ext_max; - __entry->broot_size = ip->i_df.if_broot_bytes; - __entry->fork_off = XFS_IFORK_BOFF(ip); - ), - TP_printk("dev %d:%d ino 0x%llx (%s), %s format, num_extents %d, " - "Max in-fork extents %d, broot size %d, fork offset %d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __print_symbolic(__entry->which, XFS_SWAPEXT_INODES), - __print_symbolic(__entry->format, XFS_INODE_FORMAT_STR), - __entry->nex, - __entry->max_nex, - __entry->broot_size, - __entry->fork_off) -) - -#define DEFINE_SWAPEXT_EVENT(name) \ -DEFINE_EVENT(xfs_swap_extent_class, name, \ - TP_PROTO(struct xfs_inode *ip, int which), \ - TP_ARGS(ip, which)) - -DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before); -DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after); - -DECLARE_EVENT_CLASS(xfs_log_recover_item_class, - TP_PROTO(struct log *log, struct xlog_recover *trans, - struct xlog_recover_item *item, int pass), - TP_ARGS(log, trans, item, pass), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(unsigned long, item) - __field(xlog_tid_t, tid) - __field(int, type) - __field(int, pass) - __field(int, count) - __field(int, total) - ), - TP_fast_assign( - __entry->dev = log->l_mp->m_super->s_dev; - __entry->item = (unsigned long)item; - __entry->tid = trans->r_log_tid; - __entry->type = ITEM_TYPE(item); - __entry->pass = pass; - __entry->count = item->ri_cnt; - __entry->total = item->ri_total; - ), - TP_printk("dev %d:%d trans 0x%x, pass %d, item 0x%p, item type %s " - "item region count/total %d/%d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->tid, - __entry->pass, - (void *)__entry->item, - __print_symbolic(__entry->type, XFS_LI_TYPE_DESC), - __entry->count, - __entry->total) -) - -#define DEFINE_LOG_RECOVER_ITEM(name) \ -DEFINE_EVENT(xfs_log_recover_item_class, name, \ - TP_PROTO(struct log *log, struct xlog_recover *trans, \ - struct xlog_recover_item *item, int pass), \ - TP_ARGS(log, trans, item, pass)) - -DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_add); -DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_add_cont); -DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_reorder_head); -DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_reorder_tail); -DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_recover); - -DECLARE_EVENT_CLASS(xfs_log_recover_buf_item_class, - TP_PROTO(struct log *log, struct xfs_buf_log_format *buf_f), - TP_ARGS(log, buf_f), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(__int64_t, blkno) - __field(unsigned short, len) - __field(unsigned short, flags) - __field(unsigned short, size) - __field(unsigned int, map_size) - ), - TP_fast_assign( - __entry->dev = log->l_mp->m_super->s_dev; - __entry->blkno = buf_f->blf_blkno; - __entry->len = buf_f->blf_len; - __entry->flags = buf_f->blf_flags; - __entry->size = buf_f->blf_size; - __entry->map_size = buf_f->blf_map_size; - ), - TP_printk("dev %d:%d blkno 0x%llx, len %u, flags 0x%x, size %d, " - "map_size %d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->blkno, - __entry->len, - __entry->flags, - __entry->size, - __entry->map_size) -) - -#define DEFINE_LOG_RECOVER_BUF_ITEM(name) \ -DEFINE_EVENT(xfs_log_recover_buf_item_class, name, \ - TP_PROTO(struct log *log, struct xfs_buf_log_format *buf_f), \ - TP_ARGS(log, buf_f)) - -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_not_cancel); -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_cancel); -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_cancel_add); -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_cancel_ref_inc); -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_recover); -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_inode_buf); -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_reg_buf); -DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_dquot_buf); - -DECLARE_EVENT_CLASS(xfs_log_recover_ino_item_class, - TP_PROTO(struct log *log, struct xfs_inode_log_format *in_f), - TP_ARGS(log, in_f), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(unsigned short, size) - __field(int, fields) - __field(unsigned short, asize) - __field(unsigned short, dsize) - __field(__int64_t, blkno) - __field(int, len) - __field(int, boffset) - ), - TP_fast_assign( - __entry->dev = log->l_mp->m_super->s_dev; - __entry->ino = in_f->ilf_ino; - __entry->size = in_f->ilf_size; - __entry->fields = in_f->ilf_fields; - __entry->asize = in_f->ilf_asize; - __entry->dsize = in_f->ilf_dsize; - __entry->blkno = in_f->ilf_blkno; - __entry->len = in_f->ilf_len; - __entry->boffset = in_f->ilf_boffset; - ), - TP_printk("dev %d:%d ino 0x%llx, size %u, fields 0x%x, asize %d, " - "dsize %d, blkno 0x%llx, len %d, boffset %d", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->size, - __entry->fields, - __entry->asize, - __entry->dsize, - __entry->blkno, - __entry->len, - __entry->boffset) -) -#define DEFINE_LOG_RECOVER_INO_ITEM(name) \ -DEFINE_EVENT(xfs_log_recover_ino_item_class, name, \ - TP_PROTO(struct log *log, struct xfs_inode_log_format *in_f), \ - TP_ARGS(log, in_f)) - -DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_recover); -DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_cancel); -DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_skip); - -DECLARE_EVENT_CLASS(xfs_discard_class, - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_agblock_t agbno, xfs_extlen_t len), - TP_ARGS(mp, agno, agbno, len), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(xfs_agblock_t, agbno) - __field(xfs_extlen_t, len) - ), - TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = agno; - __entry->agbno = agbno; - __entry->len = len; - ), - TP_printk("dev %d:%d agno %u agbno %u len %u\n", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __entry->agbno, - __entry->len) -) - -#define DEFINE_DISCARD_EVENT(name) \ -DEFINE_EVENT(xfs_discard_class, name, \ - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \ - xfs_agblock_t agbno, xfs_extlen_t len), \ - TP_ARGS(mp, agno, agbno, len)) -DEFINE_DISCARD_EVENT(xfs_discard_extent); -DEFINE_DISCARD_EVENT(xfs_discard_toosmall); -DEFINE_DISCARD_EVENT(xfs_discard_exclude); -DEFINE_DISCARD_EVENT(xfs_discard_busy); - -#endif /* _TRACE_XFS_H */ - -#undef TRACE_INCLUDE_PATH -#define TRACE_INCLUDE_PATH . -#define TRACE_INCLUDE_FILE xfs_trace -#include diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h deleted file mode 100644 index 7c220b4227bc..000000000000 --- a/fs/xfs/linux-2.6/xfs_vnode.h +++ /dev/null @@ -1,64 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_VNODE_H__ -#define __XFS_VNODE_H__ - -#include "xfs_fs.h" - -struct file; -struct xfs_inode; -struct xfs_iomap; -struct attrlist_cursor_kern; - -/* - * Return values for xfs_inactive. A return value of - * VN_INACTIVE_NOCACHE implies that the file system behavior - * has disassociated its state and bhv_desc_t from the vnode. - */ -#define VN_INACTIVE_CACHE 0 -#define VN_INACTIVE_NOCACHE 1 - -/* - * Flags for read/write calls - same values as IRIX - */ -#define IO_ISDIRECT 0x00004 /* bypass page cache */ -#define IO_INVIS 0x00020 /* don't update inode timestamps */ - -#define XFS_IO_FLAGS \ - { IO_ISDIRECT, "DIRECT" }, \ - { IO_INVIS, "INVIS"} - -/* - * Flush/Invalidate options for vop_toss/flush/flushinval_pages. - */ -#define FI_NONE 0 /* none */ -#define FI_REMAPF 1 /* Do a remapf prior to the operation */ -#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. - Prevent VM access to the pages until - the operation completes. */ - -/* - * Some useful predicates. - */ -#define VN_MAPPED(vp) mapping_mapped(vp->i_mapping) -#define VN_CACHED(vp) (vp->i_mapping->nrpages) -#define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \ - PAGECACHE_TAG_DIRTY) - - -#endif /* __XFS_VNODE_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_xattr.c b/fs/xfs/linux-2.6/xfs_xattr.c deleted file mode 100644 index 87d3e03878c8..000000000000 --- a/fs/xfs/linux-2.6/xfs_xattr.c +++ /dev/null @@ -1,241 +0,0 @@ -/* - * Copyright (C) 2008 Christoph Hellwig. - * Portions Copyright (C) 2000-2008 Silicon Graphics, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "xfs.h" -#include "xfs_da_btree.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_attr.h" -#include "xfs_attr_leaf.h" -#include "xfs_acl.h" -#include "xfs_vnodeops.h" - -#include -#include - - -static int -xfs_xattr_get(struct dentry *dentry, const char *name, - void *value, size_t size, int xflags) -{ - struct xfs_inode *ip = XFS_I(dentry->d_inode); - int error, asize = size; - - if (strcmp(name, "") == 0) - return -EINVAL; - - /* Convert Linux syscall to XFS internal ATTR flags */ - if (!size) { - xflags |= ATTR_KERNOVAL; - value = NULL; - } - - error = -xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags); - if (error) - return error; - return asize; -} - -static int -xfs_xattr_set(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags, int xflags) -{ - struct xfs_inode *ip = XFS_I(dentry->d_inode); - - if (strcmp(name, "") == 0) - return -EINVAL; - - /* Convert Linux syscall to XFS internal ATTR flags */ - if (flags & XATTR_CREATE) - xflags |= ATTR_CREATE; - if (flags & XATTR_REPLACE) - xflags |= ATTR_REPLACE; - - if (!value) - return -xfs_attr_remove(ip, (unsigned char *)name, xflags); - return -xfs_attr_set(ip, (unsigned char *)name, - (void *)value, size, xflags); -} - -static const struct xattr_handler xfs_xattr_user_handler = { - .prefix = XATTR_USER_PREFIX, - .flags = 0, /* no flags implies user namespace */ - .get = xfs_xattr_get, - .set = xfs_xattr_set, -}; - -static const struct xattr_handler xfs_xattr_trusted_handler = { - .prefix = XATTR_TRUSTED_PREFIX, - .flags = ATTR_ROOT, - .get = xfs_xattr_get, - .set = xfs_xattr_set, -}; - -static const struct xattr_handler xfs_xattr_security_handler = { - .prefix = XATTR_SECURITY_PREFIX, - .flags = ATTR_SECURE, - .get = xfs_xattr_get, - .set = xfs_xattr_set, -}; - -const struct xattr_handler *xfs_xattr_handlers[] = { - &xfs_xattr_user_handler, - &xfs_xattr_trusted_handler, - &xfs_xattr_security_handler, -#ifdef CONFIG_XFS_POSIX_ACL - &xfs_xattr_acl_access_handler, - &xfs_xattr_acl_default_handler, -#endif - NULL -}; - -static unsigned int xfs_xattr_prefix_len(int flags) -{ - if (flags & XFS_ATTR_SECURE) - return sizeof("security"); - else if (flags & XFS_ATTR_ROOT) - return sizeof("trusted"); - else - return sizeof("user"); -} - -static const char *xfs_xattr_prefix(int flags) -{ - if (flags & XFS_ATTR_SECURE) - return xfs_xattr_security_handler.prefix; - else if (flags & XFS_ATTR_ROOT) - return xfs_xattr_trusted_handler.prefix; - else - return xfs_xattr_user_handler.prefix; -} - -static int -xfs_xattr_put_listent( - struct xfs_attr_list_context *context, - int flags, - unsigned char *name, - int namelen, - int valuelen, - unsigned char *value) -{ - unsigned int prefix_len = xfs_xattr_prefix_len(flags); - char *offset; - int arraytop; - - ASSERT(context->count >= 0); - - /* - * Only show root namespace entries if we are actually allowed to - * see them. - */ - if ((flags & XFS_ATTR_ROOT) && !capable(CAP_SYS_ADMIN)) - return 0; - - arraytop = context->count + prefix_len + namelen + 1; - if (arraytop > context->firstu) { - context->count = -1; /* insufficient space */ - return 1; - } - offset = (char *)context->alist + context->count; - strncpy(offset, xfs_xattr_prefix(flags), prefix_len); - offset += prefix_len; - strncpy(offset, (char *)name, namelen); /* real name */ - offset += namelen; - *offset = '\0'; - context->count += prefix_len + namelen + 1; - return 0; -} - -static int -xfs_xattr_put_listent_sizes( - struct xfs_attr_list_context *context, - int flags, - unsigned char *name, - int namelen, - int valuelen, - unsigned char *value) -{ - context->count += xfs_xattr_prefix_len(flags) + namelen + 1; - return 0; -} - -static int -list_one_attr(const char *name, const size_t len, void *data, - size_t size, ssize_t *result) -{ - char *p = data + *result; - - *result += len; - if (!size) - return 0; - if (*result > size) - return -ERANGE; - - strcpy(p, name); - return 0; -} - -ssize_t -xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size) -{ - struct xfs_attr_list_context context; - struct attrlist_cursor_kern cursor = { 0 }; - struct inode *inode = dentry->d_inode; - int error; - - /* - * First read the regular on-disk attributes. - */ - memset(&context, 0, sizeof(context)); - context.dp = XFS_I(inode); - context.cursor = &cursor; - context.resynch = 1; - context.alist = data; - context.bufsize = size; - context.firstu = context.bufsize; - - if (size) - context.put_listent = xfs_xattr_put_listent; - else - context.put_listent = xfs_xattr_put_listent_sizes; - - xfs_attr_list_int(&context); - if (context.count < 0) - return -ERANGE; - - /* - * Then add the two synthetic ACL attributes. - */ - if (posix_acl_access_exists(inode)) { - error = list_one_attr(POSIX_ACL_XATTR_ACCESS, - strlen(POSIX_ACL_XATTR_ACCESS) + 1, - data, size, &context.count); - if (error) - return error; - } - - if (posix_acl_default_exists(inode)) { - error = list_one_attr(POSIX_ACL_XATTR_DEFAULT, - strlen(POSIX_ACL_XATTR_DEFAULT) + 1, - data, size, &context.count); - if (error) - return error; - } - - return context.count; -} diff --git a/fs/xfs/mrlock.h b/fs/xfs/mrlock.h new file mode 100644 index 000000000000..ff6a19873e5c --- /dev/null +++ b/fs/xfs/mrlock.h @@ -0,0 +1,90 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_SUPPORT_MRLOCK_H__ +#define __XFS_SUPPORT_MRLOCK_H__ + +#include + +typedef struct { + struct rw_semaphore mr_lock; +#ifdef DEBUG + int mr_writer; +#endif +} mrlock_t; + +#ifdef DEBUG +#define mrinit(mrp, name) \ + do { (mrp)->mr_writer = 0; init_rwsem(&(mrp)->mr_lock); } while (0) +#else +#define mrinit(mrp, name) \ + do { init_rwsem(&(mrp)->mr_lock); } while (0) +#endif + +#define mrlock_init(mrp, t,n,s) mrinit(mrp, n) +#define mrfree(mrp) do { } while (0) + +static inline void mraccess_nested(mrlock_t *mrp, int subclass) +{ + down_read_nested(&mrp->mr_lock, subclass); +} + +static inline void mrupdate_nested(mrlock_t *mrp, int subclass) +{ + down_write_nested(&mrp->mr_lock, subclass); +#ifdef DEBUG + mrp->mr_writer = 1; +#endif +} + +static inline int mrtryaccess(mrlock_t *mrp) +{ + return down_read_trylock(&mrp->mr_lock); +} + +static inline int mrtryupdate(mrlock_t *mrp) +{ + if (!down_write_trylock(&mrp->mr_lock)) + return 0; +#ifdef DEBUG + mrp->mr_writer = 1; +#endif + return 1; +} + +static inline void mrunlock_excl(mrlock_t *mrp) +{ +#ifdef DEBUG + mrp->mr_writer = 0; +#endif + up_write(&mrp->mr_lock); +} + +static inline void mrunlock_shared(mrlock_t *mrp) +{ + up_read(&mrp->mr_lock); +} + +static inline void mrdemote(mrlock_t *mrp) +{ +#ifdef DEBUG + mrp->mr_writer = 0; +#endif + downgrade_write(&mrp->mr_lock); +} + +#endif /* __XFS_SUPPORT_MRLOCK_H__ */ diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c deleted file mode 100644 index db62959bed13..000000000000 --- a/fs/xfs/quota/xfs_dquot.c +++ /dev/null @@ -1,1454 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_itable.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_space.h" -#include "xfs_trans_priv.h" -#include "xfs_qm.h" -#include "xfs_trace.h" - - -/* - LOCK ORDER - - inode lock (ilock) - dquot hash-chain lock (hashlock) - xqm dquot freelist lock (freelistlock - mount's dquot list lock (mplistlock) - user dquot lock - lock ordering among dquots is based on the uid or gid - group dquot lock - similar to udquots. Between the two dquots, the udquot - has to be locked first. - pin lock - the dquot lock must be held to take this lock. - flush lock - ditto. -*/ - -#ifdef DEBUG -xfs_buftarg_t *xfs_dqerror_target; -int xfs_do_dqerror; -int xfs_dqreq_num; -int xfs_dqerror_mod = 33; -#endif - -static struct lock_class_key xfs_dquot_other_class; - -/* - * Allocate and initialize a dquot. We don't always allocate fresh memory; - * we try to reclaim a free dquot if the number of incore dquots are above - * a threshold. - * The only field inside the core that gets initialized at this point - * is the d_id field. The idea is to fill in the entire q_core - * when we read in the on disk dquot. - */ -STATIC xfs_dquot_t * -xfs_qm_dqinit( - xfs_mount_t *mp, - xfs_dqid_t id, - uint type) -{ - xfs_dquot_t *dqp; - boolean_t brandnewdquot; - - brandnewdquot = xfs_qm_dqalloc_incore(&dqp); - dqp->dq_flags = type; - dqp->q_core.d_id = cpu_to_be32(id); - dqp->q_mount = mp; - - /* - * No need to re-initialize these if this is a reclaimed dquot. - */ - if (brandnewdquot) { - INIT_LIST_HEAD(&dqp->q_freelist); - mutex_init(&dqp->q_qlock); - init_waitqueue_head(&dqp->q_pinwait); - - /* - * Because we want to use a counting completion, complete - * the flush completion once to allow a single access to - * the flush completion without blocking. - */ - init_completion(&dqp->q_flush); - complete(&dqp->q_flush); - - trace_xfs_dqinit(dqp); - } else { - /* - * Only the q_core portion was zeroed in dqreclaim_one(). - * So, we need to reset others. - */ - dqp->q_nrefs = 0; - dqp->q_blkno = 0; - INIT_LIST_HEAD(&dqp->q_mplist); - INIT_LIST_HEAD(&dqp->q_hashlist); - dqp->q_bufoffset = 0; - dqp->q_fileoffset = 0; - dqp->q_transp = NULL; - dqp->q_gdquot = NULL; - dqp->q_res_bcount = 0; - dqp->q_res_icount = 0; - dqp->q_res_rtbcount = 0; - atomic_set(&dqp->q_pincount, 0); - dqp->q_hash = NULL; - ASSERT(list_empty(&dqp->q_freelist)); - - trace_xfs_dqreuse(dqp); - } - - /* - * In either case we need to make sure group quotas have a different - * lock class than user quotas, to make sure lockdep knows we can - * locks of one of each at the same time. - */ - if (!(type & XFS_DQ_USER)) - lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class); - - /* - * log item gets initialized later - */ - return (dqp); -} - -/* - * This is called to free all the memory associated with a dquot - */ -void -xfs_qm_dqdestroy( - xfs_dquot_t *dqp) -{ - ASSERT(list_empty(&dqp->q_freelist)); - - mutex_destroy(&dqp->q_qlock); - kmem_zone_free(xfs_Gqm->qm_dqzone, dqp); - - atomic_dec(&xfs_Gqm->qm_totaldquots); -} - -/* - * This is what a 'fresh' dquot inside a dquot chunk looks like on disk. - */ -STATIC void -xfs_qm_dqinit_core( - xfs_dqid_t id, - uint type, - xfs_dqblk_t *d) -{ - /* - * Caller has zero'd the entire dquot 'chunk' already. - */ - d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); - d->dd_diskdq.d_version = XFS_DQUOT_VERSION; - d->dd_diskdq.d_id = cpu_to_be32(id); - d->dd_diskdq.d_flags = type; -} - -/* - * If default limits are in force, push them into the dquot now. - * We overwrite the dquot limits only if they are zero and this - * is not the root dquot. - */ -void -xfs_qm_adjust_dqlimits( - xfs_mount_t *mp, - xfs_disk_dquot_t *d) -{ - xfs_quotainfo_t *q = mp->m_quotainfo; - - ASSERT(d->d_id); - - if (q->qi_bsoftlimit && !d->d_blk_softlimit) - d->d_blk_softlimit = cpu_to_be64(q->qi_bsoftlimit); - if (q->qi_bhardlimit && !d->d_blk_hardlimit) - d->d_blk_hardlimit = cpu_to_be64(q->qi_bhardlimit); - if (q->qi_isoftlimit && !d->d_ino_softlimit) - d->d_ino_softlimit = cpu_to_be64(q->qi_isoftlimit); - if (q->qi_ihardlimit && !d->d_ino_hardlimit) - d->d_ino_hardlimit = cpu_to_be64(q->qi_ihardlimit); - if (q->qi_rtbsoftlimit && !d->d_rtb_softlimit) - d->d_rtb_softlimit = cpu_to_be64(q->qi_rtbsoftlimit); - if (q->qi_rtbhardlimit && !d->d_rtb_hardlimit) - d->d_rtb_hardlimit = cpu_to_be64(q->qi_rtbhardlimit); -} - -/* - * Check the limits and timers of a dquot and start or reset timers - * if necessary. - * This gets called even when quota enforcement is OFF, which makes our - * life a little less complicated. (We just don't reject any quota - * reservations in that case, when enforcement is off). - * We also return 0 as the values of the timers in Q_GETQUOTA calls, when - * enforcement's off. - * In contrast, warnings are a little different in that they don't - * 'automatically' get started when limits get exceeded. They do - * get reset to zero, however, when we find the count to be under - * the soft limit (they are only ever set non-zero via userspace). - */ -void -xfs_qm_adjust_dqtimers( - xfs_mount_t *mp, - xfs_disk_dquot_t *d) -{ - ASSERT(d->d_id); - -#ifdef DEBUG - if (d->d_blk_hardlimit) - ASSERT(be64_to_cpu(d->d_blk_softlimit) <= - be64_to_cpu(d->d_blk_hardlimit)); - if (d->d_ino_hardlimit) - ASSERT(be64_to_cpu(d->d_ino_softlimit) <= - be64_to_cpu(d->d_ino_hardlimit)); - if (d->d_rtb_hardlimit) - ASSERT(be64_to_cpu(d->d_rtb_softlimit) <= - be64_to_cpu(d->d_rtb_hardlimit)); -#endif - - if (!d->d_btimer) { - if ((d->d_blk_softlimit && - (be64_to_cpu(d->d_bcount) >= - be64_to_cpu(d->d_blk_softlimit))) || - (d->d_blk_hardlimit && - (be64_to_cpu(d->d_bcount) >= - be64_to_cpu(d->d_blk_hardlimit)))) { - d->d_btimer = cpu_to_be32(get_seconds() + - mp->m_quotainfo->qi_btimelimit); - } else { - d->d_bwarns = 0; - } - } else { - if ((!d->d_blk_softlimit || - (be64_to_cpu(d->d_bcount) < - be64_to_cpu(d->d_blk_softlimit))) && - (!d->d_blk_hardlimit || - (be64_to_cpu(d->d_bcount) < - be64_to_cpu(d->d_blk_hardlimit)))) { - d->d_btimer = 0; - } - } - - if (!d->d_itimer) { - if ((d->d_ino_softlimit && - (be64_to_cpu(d->d_icount) >= - be64_to_cpu(d->d_ino_softlimit))) || - (d->d_ino_hardlimit && - (be64_to_cpu(d->d_icount) >= - be64_to_cpu(d->d_ino_hardlimit)))) { - d->d_itimer = cpu_to_be32(get_seconds() + - mp->m_quotainfo->qi_itimelimit); - } else { - d->d_iwarns = 0; - } - } else { - if ((!d->d_ino_softlimit || - (be64_to_cpu(d->d_icount) < - be64_to_cpu(d->d_ino_softlimit))) && - (!d->d_ino_hardlimit || - (be64_to_cpu(d->d_icount) < - be64_to_cpu(d->d_ino_hardlimit)))) { - d->d_itimer = 0; - } - } - - if (!d->d_rtbtimer) { - if ((d->d_rtb_softlimit && - (be64_to_cpu(d->d_rtbcount) >= - be64_to_cpu(d->d_rtb_softlimit))) || - (d->d_rtb_hardlimit && - (be64_to_cpu(d->d_rtbcount) >= - be64_to_cpu(d->d_rtb_hardlimit)))) { - d->d_rtbtimer = cpu_to_be32(get_seconds() + - mp->m_quotainfo->qi_rtbtimelimit); - } else { - d->d_rtbwarns = 0; - } - } else { - if ((!d->d_rtb_softlimit || - (be64_to_cpu(d->d_rtbcount) < - be64_to_cpu(d->d_rtb_softlimit))) && - (!d->d_rtb_hardlimit || - (be64_to_cpu(d->d_rtbcount) < - be64_to_cpu(d->d_rtb_hardlimit)))) { - d->d_rtbtimer = 0; - } - } -} - -/* - * initialize a buffer full of dquots and log the whole thing - */ -STATIC void -xfs_qm_init_dquot_blk( - xfs_trans_t *tp, - xfs_mount_t *mp, - xfs_dqid_t id, - uint type, - xfs_buf_t *bp) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - xfs_dqblk_t *d; - int curid, i; - - ASSERT(tp); - ASSERT(xfs_buf_islocked(bp)); - - d = bp->b_addr; - - /* - * ID of the first dquot in the block - id's are zero based. - */ - curid = id - (id % q->qi_dqperchunk); - ASSERT(curid >= 0); - memset(d, 0, BBTOB(q->qi_dqchunklen)); - for (i = 0; i < q->qi_dqperchunk; i++, d++, curid++) - xfs_qm_dqinit_core(curid, type, d); - xfs_trans_dquot_buf(tp, bp, - (type & XFS_DQ_USER ? XFS_BLF_UDQUOT_BUF : - ((type & XFS_DQ_PROJ) ? XFS_BLF_PDQUOT_BUF : - XFS_BLF_GDQUOT_BUF))); - xfs_trans_log_buf(tp, bp, 0, BBTOB(q->qi_dqchunklen) - 1); -} - - - -/* - * Allocate a block and fill it with dquots. - * This is called when the bmapi finds a hole. - */ -STATIC int -xfs_qm_dqalloc( - xfs_trans_t **tpp, - xfs_mount_t *mp, - xfs_dquot_t *dqp, - xfs_inode_t *quotip, - xfs_fileoff_t offset_fsb, - xfs_buf_t **O_bpp) -{ - xfs_fsblock_t firstblock; - xfs_bmap_free_t flist; - xfs_bmbt_irec_t map; - int nmaps, error, committed; - xfs_buf_t *bp; - xfs_trans_t *tp = *tpp; - - ASSERT(tp != NULL); - - trace_xfs_dqalloc(dqp); - - /* - * Initialize the bmap freelist prior to calling bmapi code. - */ - xfs_bmap_init(&flist, &firstblock); - xfs_ilock(quotip, XFS_ILOCK_EXCL); - /* - * Return if this type of quotas is turned off while we didn't - * have an inode lock - */ - if (XFS_IS_THIS_QUOTA_OFF(dqp)) { - xfs_iunlock(quotip, XFS_ILOCK_EXCL); - return (ESRCH); - } - - xfs_trans_ijoin_ref(tp, quotip, XFS_ILOCK_EXCL); - nmaps = 1; - if ((error = xfs_bmapi(tp, quotip, - offset_fsb, XFS_DQUOT_CLUSTER_SIZE_FSB, - XFS_BMAPI_METADATA | XFS_BMAPI_WRITE, - &firstblock, - XFS_QM_DQALLOC_SPACE_RES(mp), - &map, &nmaps, &flist))) { - goto error0; - } - ASSERT(map.br_blockcount == XFS_DQUOT_CLUSTER_SIZE_FSB); - ASSERT(nmaps == 1); - ASSERT((map.br_startblock != DELAYSTARTBLOCK) && - (map.br_startblock != HOLESTARTBLOCK)); - - /* - * Keep track of the blkno to save a lookup later - */ - dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); - - /* now we can just get the buffer (there's nothing to read yet) */ - bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, - dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, - 0); - if (!bp || (error = xfs_buf_geterror(bp))) - goto error1; - /* - * Make a chunk of dquots out of this buffer and log - * the entire thing. - */ - xfs_qm_init_dquot_blk(tp, mp, be32_to_cpu(dqp->q_core.d_id), - dqp->dq_flags & XFS_DQ_ALLTYPES, bp); - - /* - * xfs_bmap_finish() may commit the current transaction and - * start a second transaction if the freelist is not empty. - * - * Since we still want to modify this buffer, we need to - * ensure that the buffer is not released on commit of - * the first transaction and ensure the buffer is added to the - * second transaction. - * - * If there is only one transaction then don't stop the buffer - * from being released when it commits later on. - */ - - xfs_trans_bhold(tp, bp); - - if ((error = xfs_bmap_finish(tpp, &flist, &committed))) { - goto error1; - } - - if (committed) { - tp = *tpp; - xfs_trans_bjoin(tp, bp); - } else { - xfs_trans_bhold_release(tp, bp); - } - - *O_bpp = bp; - return 0; - - error1: - xfs_bmap_cancel(&flist); - error0: - xfs_iunlock(quotip, XFS_ILOCK_EXCL); - - return (error); -} - -/* - * Maps a dquot to the buffer containing its on-disk version. - * This returns a ptr to the buffer containing the on-disk dquot - * in the bpp param, and a ptr to the on-disk dquot within that buffer - */ -STATIC int -xfs_qm_dqtobp( - xfs_trans_t **tpp, - xfs_dquot_t *dqp, - xfs_disk_dquot_t **O_ddpp, - xfs_buf_t **O_bpp, - uint flags) -{ - xfs_bmbt_irec_t map; - int nmaps = 1, error; - xfs_buf_t *bp; - xfs_inode_t *quotip = XFS_DQ_TO_QIP(dqp); - xfs_mount_t *mp = dqp->q_mount; - xfs_disk_dquot_t *ddq; - xfs_dqid_t id = be32_to_cpu(dqp->q_core.d_id); - xfs_trans_t *tp = (tpp ? *tpp : NULL); - - dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk; - - xfs_ilock(quotip, XFS_ILOCK_SHARED); - if (XFS_IS_THIS_QUOTA_OFF(dqp)) { - /* - * Return if this type of quotas is turned off while we - * didn't have the quota inode lock. - */ - xfs_iunlock(quotip, XFS_ILOCK_SHARED); - return ESRCH; - } - - /* - * Find the block map; no allocations yet - */ - error = xfs_bmapi(NULL, quotip, dqp->q_fileoffset, - XFS_DQUOT_CLUSTER_SIZE_FSB, XFS_BMAPI_METADATA, - NULL, 0, &map, &nmaps, NULL); - - xfs_iunlock(quotip, XFS_ILOCK_SHARED); - if (error) - return error; - - ASSERT(nmaps == 1); - ASSERT(map.br_blockcount == 1); - - /* - * Offset of dquot in the (fixed sized) dquot chunk. - */ - dqp->q_bufoffset = (id % mp->m_quotainfo->qi_dqperchunk) * - sizeof(xfs_dqblk_t); - - ASSERT(map.br_startblock != DELAYSTARTBLOCK); - if (map.br_startblock == HOLESTARTBLOCK) { - /* - * We don't allocate unless we're asked to - */ - if (!(flags & XFS_QMOPT_DQALLOC)) - return ENOENT; - - ASSERT(tp); - error = xfs_qm_dqalloc(tpp, mp, dqp, quotip, - dqp->q_fileoffset, &bp); - if (error) - return error; - tp = *tpp; - } else { - trace_xfs_dqtobp_read(dqp); - - /* - * store the blkno etc so that we don't have to do the - * mapping all the time - */ - dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); - - error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, - dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, - 0, &bp); - if (error || !bp) - return XFS_ERROR(error); - } - - ASSERT(xfs_buf_islocked(bp)); - - /* - * calculate the location of the dquot inside the buffer. - */ - ddq = bp->b_addr + dqp->q_bufoffset; - - /* - * A simple sanity check in case we got a corrupted dquot... - */ - error = xfs_qm_dqcheck(mp, ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES, - flags & (XFS_QMOPT_DQREPAIR|XFS_QMOPT_DOWARN), - "dqtobp"); - if (error) { - if (!(flags & XFS_QMOPT_DQREPAIR)) { - xfs_trans_brelse(tp, bp); - return XFS_ERROR(EIO); - } - } - - *O_bpp = bp; - *O_ddpp = ddq; - - return (0); -} - - -/* - * Read in the ondisk dquot using dqtobp() then copy it to an incore version, - * and release the buffer immediately. - * - */ -/* ARGSUSED */ -STATIC int -xfs_qm_dqread( - xfs_trans_t **tpp, - xfs_dqid_t id, - xfs_dquot_t *dqp, /* dquot to get filled in */ - uint flags) -{ - xfs_disk_dquot_t *ddqp; - xfs_buf_t *bp; - int error; - xfs_trans_t *tp; - - ASSERT(tpp); - - trace_xfs_dqread(dqp); - - /* - * get a pointer to the on-disk dquot and the buffer containing it - * dqp already knows its own type (GROUP/USER). - */ - if ((error = xfs_qm_dqtobp(tpp, dqp, &ddqp, &bp, flags))) { - return (error); - } - tp = *tpp; - - /* copy everything from disk dquot to the incore dquot */ - memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t)); - ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); - xfs_qm_dquot_logitem_init(dqp); - - /* - * Reservation counters are defined as reservation plus current usage - * to avoid having to add every time. - */ - dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount); - dqp->q_res_icount = be64_to_cpu(ddqp->d_icount); - dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount); - - /* Mark the buf so that this will stay incore a little longer */ - XFS_BUF_SET_VTYPE_REF(bp, B_FS_DQUOT, XFS_DQUOT_REF); - - /* - * We got the buffer with a xfs_trans_read_buf() (in dqtobp()) - * So we need to release with xfs_trans_brelse(). - * The strategy here is identical to that of inodes; we lock - * the dquot in xfs_qm_dqget() before making it accessible to - * others. This is because dquots, like inodes, need a good level of - * concurrency, and we don't want to take locks on the entire buffers - * for dquot accesses. - * Note also that the dquot buffer may even be dirty at this point, if - * this particular dquot was repaired. We still aren't afraid to - * brelse it because we have the changes incore. - */ - ASSERT(xfs_buf_islocked(bp)); - xfs_trans_brelse(tp, bp); - - return (error); -} - - -/* - * allocate an incore dquot from the kernel heap, - * and fill its core with quota information kept on disk. - * If XFS_QMOPT_DQALLOC is set, it'll allocate a dquot on disk - * if it wasn't already allocated. - */ -STATIC int -xfs_qm_idtodq( - xfs_mount_t *mp, - xfs_dqid_t id, /* gid or uid, depending on type */ - uint type, /* UDQUOT or GDQUOT */ - uint flags, /* DQALLOC, DQREPAIR */ - xfs_dquot_t **O_dqpp)/* OUT : incore dquot, not locked */ -{ - xfs_dquot_t *dqp; - int error; - xfs_trans_t *tp; - int cancelflags=0; - - dqp = xfs_qm_dqinit(mp, id, type); - tp = NULL; - if (flags & XFS_QMOPT_DQALLOC) { - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); - error = xfs_trans_reserve(tp, XFS_QM_DQALLOC_SPACE_RES(mp), - XFS_WRITE_LOG_RES(mp) + - BBTOB(mp->m_quotainfo->qi_dqchunklen) - 1 + - 128, - 0, - XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); - if (error) { - cancelflags = 0; - goto error0; - } - cancelflags = XFS_TRANS_RELEASE_LOG_RES; - } - - /* - * Read it from disk; xfs_dqread() takes care of - * all the necessary initialization of dquot's fields (locks, etc) - */ - if ((error = xfs_qm_dqread(&tp, id, dqp, flags))) { - /* - * This can happen if quotas got turned off (ESRCH), - * or if the dquot didn't exist on disk and we ask to - * allocate (ENOENT). - */ - trace_xfs_dqread_fail(dqp); - cancelflags |= XFS_TRANS_ABORT; - goto error0; - } - if (tp) { - if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) - goto error1; - } - - *O_dqpp = dqp; - return (0); - - error0: - ASSERT(error); - if (tp) - xfs_trans_cancel(tp, cancelflags); - error1: - xfs_qm_dqdestroy(dqp); - *O_dqpp = NULL; - return (error); -} - -/* - * Lookup a dquot in the incore dquot hashtable. We keep two separate - * hashtables for user and group dquots; and, these are global tables - * inside the XQM, not per-filesystem tables. - * The hash chain must be locked by caller, and it is left locked - * on return. Returning dquot is locked. - */ -STATIC int -xfs_qm_dqlookup( - xfs_mount_t *mp, - xfs_dqid_t id, - xfs_dqhash_t *qh, - xfs_dquot_t **O_dqpp) -{ - xfs_dquot_t *dqp; - uint flist_locked; - - ASSERT(mutex_is_locked(&qh->qh_lock)); - - flist_locked = B_FALSE; - - /* - * Traverse the hashchain looking for a match - */ - list_for_each_entry(dqp, &qh->qh_list, q_hashlist) { - /* - * We already have the hashlock. We don't need the - * dqlock to look at the id field of the dquot, since the - * id can't be modified without the hashlock anyway. - */ - if (be32_to_cpu(dqp->q_core.d_id) == id && dqp->q_mount == mp) { - trace_xfs_dqlookup_found(dqp); - - /* - * All in core dquots must be on the dqlist of mp - */ - ASSERT(!list_empty(&dqp->q_mplist)); - - xfs_dqlock(dqp); - if (dqp->q_nrefs == 0) { - ASSERT(!list_empty(&dqp->q_freelist)); - if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { - trace_xfs_dqlookup_want(dqp); - - /* - * We may have raced with dqreclaim_one() - * (and lost). So, flag that we don't - * want the dquot to be reclaimed. - */ - dqp->dq_flags |= XFS_DQ_WANT; - xfs_dqunlock(dqp); - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - xfs_dqlock(dqp); - dqp->dq_flags &= ~(XFS_DQ_WANT); - } - flist_locked = B_TRUE; - } - - /* - * id couldn't have changed; we had the hashlock all - * along - */ - ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); - - if (flist_locked) { - if (dqp->q_nrefs != 0) { - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - flist_locked = B_FALSE; - } else { - /* take it off the freelist */ - trace_xfs_dqlookup_freelist(dqp); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - } - } - - XFS_DQHOLD(dqp); - - if (flist_locked) - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - /* - * move the dquot to the front of the hashchain - */ - ASSERT(mutex_is_locked(&qh->qh_lock)); - list_move(&dqp->q_hashlist, &qh->qh_list); - trace_xfs_dqlookup_done(dqp); - *O_dqpp = dqp; - return 0; - } - } - - *O_dqpp = NULL; - ASSERT(mutex_is_locked(&qh->qh_lock)); - return (1); -} - -/* - * Given the file system, inode OR id, and type (UDQUOT/GDQUOT), return a - * a locked dquot, doing an allocation (if requested) as needed. - * When both an inode and an id are given, the inode's id takes precedence. - * That is, if the id changes while we don't hold the ilock inside this - * function, the new dquot is returned, not necessarily the one requested - * in the id argument. - */ -int -xfs_qm_dqget( - xfs_mount_t *mp, - xfs_inode_t *ip, /* locked inode (optional) */ - xfs_dqid_t id, /* uid/projid/gid depending on type */ - uint type, /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */ - uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ - xfs_dquot_t **O_dqpp) /* OUT : locked incore dquot */ -{ - xfs_dquot_t *dqp; - xfs_dqhash_t *h; - uint version; - int error; - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) || - (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) || - (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) { - return (ESRCH); - } - h = XFS_DQ_HASH(mp, id, type); - -#ifdef DEBUG - if (xfs_do_dqerror) { - if ((xfs_dqerror_target == mp->m_ddev_targp) && - (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) { - xfs_debug(mp, "Returning error in dqget"); - return (EIO); - } - } -#endif - - again: - -#ifdef DEBUG - ASSERT(type == XFS_DQ_USER || - type == XFS_DQ_PROJ || - type == XFS_DQ_GROUP); - if (ip) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - if (type == XFS_DQ_USER) - ASSERT(ip->i_udquot == NULL); - else - ASSERT(ip->i_gdquot == NULL); - } -#endif - mutex_lock(&h->qh_lock); - - /* - * Look in the cache (hashtable). - * The chain is kept locked during lookup. - */ - if (xfs_qm_dqlookup(mp, id, h, O_dqpp) == 0) { - XQM_STATS_INC(xqmstats.xs_qm_dqcachehits); - /* - * The dquot was found, moved to the front of the chain, - * taken off the freelist if it was on it, and locked - * at this point. Just unlock the hashchain and return. - */ - ASSERT(*O_dqpp); - ASSERT(XFS_DQ_IS_LOCKED(*O_dqpp)); - mutex_unlock(&h->qh_lock); - trace_xfs_dqget_hit(*O_dqpp); - return (0); /* success */ - } - XQM_STATS_INC(xqmstats.xs_qm_dqcachemisses); - - /* - * Dquot cache miss. We don't want to keep the inode lock across - * a (potential) disk read. Also we don't want to deal with the lock - * ordering between quotainode and this inode. OTOH, dropping the inode - * lock here means dealing with a chown that can happen before - * we re-acquire the lock. - */ - if (ip) - xfs_iunlock(ip, XFS_ILOCK_EXCL); - /* - * Save the hashchain version stamp, and unlock the chain, so that - * we don't keep the lock across a disk read - */ - version = h->qh_version; - mutex_unlock(&h->qh_lock); - - /* - * Allocate the dquot on the kernel heap, and read the ondisk - * portion off the disk. Also, do all the necessary initialization - * This can return ENOENT if dquot didn't exist on disk and we didn't - * ask it to allocate; ESRCH if quotas got turned off suddenly. - */ - if ((error = xfs_qm_idtodq(mp, id, type, - flags & (XFS_QMOPT_DQALLOC|XFS_QMOPT_DQREPAIR| - XFS_QMOPT_DOWARN), - &dqp))) { - if (ip) - xfs_ilock(ip, XFS_ILOCK_EXCL); - return (error); - } - - /* - * See if this is mount code calling to look at the overall quota limits - * which are stored in the id == 0 user or group's dquot. - * Since we may not have done a quotacheck by this point, just return - * the dquot without attaching it to any hashtables, lists, etc, or even - * taking a reference. - * The caller must dqdestroy this once done. - */ - if (flags & XFS_QMOPT_DQSUSER) { - ASSERT(id == 0); - ASSERT(! ip); - goto dqret; - } - - /* - * Dquot lock comes after hashlock in the lock ordering - */ - if (ip) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - - /* - * A dquot could be attached to this inode by now, since - * we had dropped the ilock. - */ - if (type == XFS_DQ_USER) { - if (!XFS_IS_UQUOTA_ON(mp)) { - /* inode stays locked on return */ - xfs_qm_dqdestroy(dqp); - return XFS_ERROR(ESRCH); - } - if (ip->i_udquot) { - xfs_qm_dqdestroy(dqp); - dqp = ip->i_udquot; - xfs_dqlock(dqp); - goto dqret; - } - } else { - if (!XFS_IS_OQUOTA_ON(mp)) { - /* inode stays locked on return */ - xfs_qm_dqdestroy(dqp); - return XFS_ERROR(ESRCH); - } - if (ip->i_gdquot) { - xfs_qm_dqdestroy(dqp); - dqp = ip->i_gdquot; - xfs_dqlock(dqp); - goto dqret; - } - } - } - - /* - * Hashlock comes after ilock in lock order - */ - mutex_lock(&h->qh_lock); - if (version != h->qh_version) { - xfs_dquot_t *tmpdqp; - /* - * Now, see if somebody else put the dquot in the - * hashtable before us. This can happen because we didn't - * keep the hashchain lock. We don't have to worry about - * lock order between the two dquots here since dqp isn't - * on any findable lists yet. - */ - if (xfs_qm_dqlookup(mp, id, h, &tmpdqp) == 0) { - /* - * Duplicate found. Just throw away the new dquot - * and start over. - */ - xfs_qm_dqput(tmpdqp); - mutex_unlock(&h->qh_lock); - xfs_qm_dqdestroy(dqp); - XQM_STATS_INC(xqmstats.xs_qm_dquot_dups); - goto again; - } - } - - /* - * Put the dquot at the beginning of the hash-chain and mp's list - * LOCK ORDER: hashlock, freelistlock, mplistlock, udqlock, gdqlock .. - */ - ASSERT(mutex_is_locked(&h->qh_lock)); - dqp->q_hash = h; - list_add(&dqp->q_hashlist, &h->qh_list); - h->qh_version++; - - /* - * Attach this dquot to this filesystem's list of all dquots, - * kept inside the mount structure in m_quotainfo field - */ - mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); - - /* - * We return a locked dquot to the caller, with a reference taken - */ - xfs_dqlock(dqp); - dqp->q_nrefs = 1; - - list_add(&dqp->q_mplist, &mp->m_quotainfo->qi_dqlist); - mp->m_quotainfo->qi_dquots++; - mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); - mutex_unlock(&h->qh_lock); - dqret: - ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL)); - trace_xfs_dqget_miss(dqp); - *O_dqpp = dqp; - return (0); -} - - -/* - * Release a reference to the dquot (decrement ref-count) - * and unlock it. If there is a group quota attached to this - * dquot, carefully release that too without tripping over - * deadlocks'n'stuff. - */ -void -xfs_qm_dqput( - xfs_dquot_t *dqp) -{ - xfs_dquot_t *gdqp; - - ASSERT(dqp->q_nrefs > 0); - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - trace_xfs_dqput(dqp); - - if (dqp->q_nrefs != 1) { - dqp->q_nrefs--; - xfs_dqunlock(dqp); - return; - } - - /* - * drop the dqlock and acquire the freelist and dqlock - * in the right order; but try to get it out-of-order first - */ - if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { - trace_xfs_dqput_wait(dqp); - xfs_dqunlock(dqp); - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - xfs_dqlock(dqp); - } - - while (1) { - gdqp = NULL; - - /* We can't depend on nrefs being == 1 here */ - if (--dqp->q_nrefs == 0) { - trace_xfs_dqput_free(dqp); - - list_add_tail(&dqp->q_freelist, &xfs_Gqm->qm_dqfrlist); - xfs_Gqm->qm_dqfrlist_cnt++; - - /* - * If we just added a udquot to the freelist, then - * we want to release the gdquot reference that - * it (probably) has. Otherwise it'll keep the - * gdquot from getting reclaimed. - */ - if ((gdqp = dqp->q_gdquot)) { - /* - * Avoid a recursive dqput call - */ - xfs_dqlock(gdqp); - dqp->q_gdquot = NULL; - } - } - xfs_dqunlock(dqp); - - /* - * If we had a group quota inside the user quota as a hint, - * release it now. - */ - if (! gdqp) - break; - dqp = gdqp; - } - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); -} - -/* - * Release a dquot. Flush it if dirty, then dqput() it. - * dquot must not be locked. - */ -void -xfs_qm_dqrele( - xfs_dquot_t *dqp) -{ - if (!dqp) - return; - - trace_xfs_dqrele(dqp); - - xfs_dqlock(dqp); - /* - * We don't care to flush it if the dquot is dirty here. - * That will create stutters that we want to avoid. - * Instead we do a delayed write when we try to reclaim - * a dirty dquot. Also xfs_sync will take part of the burden... - */ - xfs_qm_dqput(dqp); -} - -/* - * This is the dquot flushing I/O completion routine. It is called - * from interrupt level when the buffer containing the dquot is - * flushed to disk. It is responsible for removing the dquot logitem - * from the AIL if it has not been re-logged, and unlocking the dquot's - * flush lock. This behavior is very similar to that of inodes.. - */ -STATIC void -xfs_qm_dqflush_done( - struct xfs_buf *bp, - struct xfs_log_item *lip) -{ - xfs_dq_logitem_t *qip = (struct xfs_dq_logitem *)lip; - xfs_dquot_t *dqp = qip->qli_dquot; - struct xfs_ail *ailp = lip->li_ailp; - - /* - * We only want to pull the item from the AIL if its - * location in the log has not changed since we started the flush. - * Thus, we only bother if the dquot's lsn has - * not changed. First we check the lsn outside the lock - * since it's cheaper, and then we recheck while - * holding the lock before removing the dquot from the AIL. - */ - if ((lip->li_flags & XFS_LI_IN_AIL) && - lip->li_lsn == qip->qli_flush_lsn) { - - /* xfs_trans_ail_delete() drops the AIL lock. */ - spin_lock(&ailp->xa_lock); - if (lip->li_lsn == qip->qli_flush_lsn) - xfs_trans_ail_delete(ailp, lip); - else - spin_unlock(&ailp->xa_lock); - } - - /* - * Release the dq's flush lock since we're done with it. - */ - xfs_dqfunlock(dqp); -} - -/* - * Write a modified dquot to disk. - * The dquot must be locked and the flush lock too taken by caller. - * The flush lock will not be unlocked until the dquot reaches the disk, - * but the dquot is free to be unlocked and modified by the caller - * in the interim. Dquot is still locked on return. This behavior is - * identical to that of inodes. - */ -int -xfs_qm_dqflush( - xfs_dquot_t *dqp, - uint flags) -{ - struct xfs_mount *mp = dqp->q_mount; - struct xfs_buf *bp; - struct xfs_disk_dquot *ddqp; - int error; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(!completion_done(&dqp->q_flush)); - - trace_xfs_dqflush(dqp); - - /* - * If not dirty, or it's pinned and we are not supposed to block, nada. - */ - if (!XFS_DQ_IS_DIRTY(dqp) || - (!(flags & SYNC_WAIT) && atomic_read(&dqp->q_pincount) > 0)) { - xfs_dqfunlock(dqp); - return 0; - } - xfs_qm_dqunpin_wait(dqp); - - /* - * This may have been unpinned because the filesystem is shutting - * down forcibly. If that's the case we must not write this dquot - * to disk, because the log record didn't make it to disk! - */ - if (XFS_FORCED_SHUTDOWN(mp)) { - dqp->dq_flags &= ~XFS_DQ_DIRTY; - xfs_dqfunlock(dqp); - return XFS_ERROR(EIO); - } - - /* - * Get the buffer containing the on-disk dquot - */ - error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, 0, &bp); - if (error) { - ASSERT(error != ENOENT); - xfs_dqfunlock(dqp); - return error; - } - - /* - * Calculate the location of the dquot inside the buffer. - */ - ddqp = bp->b_addr + dqp->q_bufoffset; - - /* - * A simple sanity check in case we got a corrupted dquot.. - */ - error = xfs_qm_dqcheck(mp, &dqp->q_core, be32_to_cpu(ddqp->d_id), 0, - XFS_QMOPT_DOWARN, "dqflush (incore copy)"); - if (error) { - xfs_buf_relse(bp); - xfs_dqfunlock(dqp); - xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); - return XFS_ERROR(EIO); - } - - /* This is the only portion of data that needs to persist */ - memcpy(ddqp, &dqp->q_core, sizeof(xfs_disk_dquot_t)); - - /* - * Clear the dirty field and remember the flush lsn for later use. - */ - dqp->dq_flags &= ~XFS_DQ_DIRTY; - - xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn, - &dqp->q_logitem.qli_item.li_lsn); - - /* - * Attach an iodone routine so that we can remove this dquot from the - * AIL and release the flush lock once the dquot is synced to disk. - */ - xfs_buf_attach_iodone(bp, xfs_qm_dqflush_done, - &dqp->q_logitem.qli_item); - - /* - * If the buffer is pinned then push on the log so we won't - * get stuck waiting in the write for too long. - */ - if (xfs_buf_ispinned(bp)) { - trace_xfs_dqflush_force(dqp); - xfs_log_force(mp, 0); - } - - if (flags & SYNC_WAIT) - error = xfs_bwrite(mp, bp); - else - xfs_bdwrite(mp, bp); - - trace_xfs_dqflush_done(dqp); - - /* - * dqp is still locked, but caller is free to unlock it now. - */ - return error; - -} - -int -xfs_qm_dqlock_nowait( - xfs_dquot_t *dqp) -{ - return mutex_trylock(&dqp->q_qlock); -} - -void -xfs_dqlock( - xfs_dquot_t *dqp) -{ - mutex_lock(&dqp->q_qlock); -} - -void -xfs_dqunlock( - xfs_dquot_t *dqp) -{ - mutex_unlock(&(dqp->q_qlock)); - if (dqp->q_logitem.qli_dquot == dqp) { - /* Once was dqp->q_mount, but might just have been cleared */ - xfs_trans_unlocked_item(dqp->q_logitem.qli_item.li_ailp, - (xfs_log_item_t*)&(dqp->q_logitem)); - } -} - - -void -xfs_dqunlock_nonotify( - xfs_dquot_t *dqp) -{ - mutex_unlock(&(dqp->q_qlock)); -} - -/* - * Lock two xfs_dquot structures. - * - * To avoid deadlocks we always lock the quota structure with - * the lowerd id first. - */ -void -xfs_dqlock2( - xfs_dquot_t *d1, - xfs_dquot_t *d2) -{ - if (d1 && d2) { - ASSERT(d1 != d2); - if (be32_to_cpu(d1->q_core.d_id) > - be32_to_cpu(d2->q_core.d_id)) { - mutex_lock(&d2->q_qlock); - mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED); - } else { - mutex_lock(&d1->q_qlock); - mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED); - } - } else if (d1) { - mutex_lock(&d1->q_qlock); - } else if (d2) { - mutex_lock(&d2->q_qlock); - } -} - - -/* - * Take a dquot out of the mount's dqlist as well as the hashlist. - * This is called via unmount as well as quotaoff, and the purge - * will always succeed unless there are soft (temp) references - * outstanding. - * - * This returns 0 if it was purged, 1 if it wasn't. It's not an error code - * that we're returning! XXXsup - not cool. - */ -/* ARGSUSED */ -int -xfs_qm_dqpurge( - xfs_dquot_t *dqp) -{ - xfs_dqhash_t *qh = dqp->q_hash; - xfs_mount_t *mp = dqp->q_mount; - - ASSERT(mutex_is_locked(&mp->m_quotainfo->qi_dqlist_lock)); - ASSERT(mutex_is_locked(&dqp->q_hash->qh_lock)); - - xfs_dqlock(dqp); - /* - * We really can't afford to purge a dquot that is - * referenced, because these are hard refs. - * It shouldn't happen in general because we went thru _all_ inodes in - * dqrele_all_inodes before calling this and didn't let the mountlock go. - * However it is possible that we have dquots with temporary - * references that are not attached to an inode. e.g. see xfs_setattr(). - */ - if (dqp->q_nrefs != 0) { - xfs_dqunlock(dqp); - mutex_unlock(&dqp->q_hash->qh_lock); - return (1); - } - - ASSERT(!list_empty(&dqp->q_freelist)); - - /* - * If we're turning off quotas, we have to make sure that, for - * example, we don't delete quota disk blocks while dquots are - * in the process of getting written to those disk blocks. - * This dquot might well be on AIL, and we can't leave it there - * if we're turning off quotas. Basically, we need this flush - * lock, and are willing to block on it. - */ - if (!xfs_dqflock_nowait(dqp)) { - /* - * Block on the flush lock after nudging dquot buffer, - * if it is incore. - */ - xfs_qm_dqflock_pushbuf_wait(dqp); - } - - /* - * XXXIf we're turning this type of quotas off, we don't care - * about the dirty metadata sitting in this dquot. OTOH, if - * we're unmounting, we do care, so we flush it and wait. - */ - if (XFS_DQ_IS_DIRTY(dqp)) { - int error; - - /* dqflush unlocks dqflock */ - /* - * Given that dqpurge is a very rare occurrence, it is OK - * that we're holding the hashlist and mplist locks - * across the disk write. But, ... XXXsup - * - * We don't care about getting disk errors here. We need - * to purge this dquot anyway, so we go ahead regardless. - */ - error = xfs_qm_dqflush(dqp, SYNC_WAIT); - if (error) - xfs_warn(mp, "%s: dquot %p flush failed", - __func__, dqp); - xfs_dqflock(dqp); - } - ASSERT(atomic_read(&dqp->q_pincount) == 0); - ASSERT(XFS_FORCED_SHUTDOWN(mp) || - !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); - - list_del_init(&dqp->q_hashlist); - qh->qh_version++; - list_del_init(&dqp->q_mplist); - mp->m_quotainfo->qi_dqreclaims++; - mp->m_quotainfo->qi_dquots--; - /* - * XXX Move this to the front of the freelist, if we can get the - * freelist lock. - */ - ASSERT(!list_empty(&dqp->q_freelist)); - - dqp->q_mount = NULL; - dqp->q_hash = NULL; - dqp->dq_flags = XFS_DQ_INACTIVE; - memset(&dqp->q_core, 0, sizeof(dqp->q_core)); - xfs_dqfunlock(dqp); - xfs_dqunlock(dqp); - mutex_unlock(&qh->qh_lock); - return (0); -} - - -/* - * Give the buffer a little push if it is incore and - * wait on the flush lock. - */ -void -xfs_qm_dqflock_pushbuf_wait( - xfs_dquot_t *dqp) -{ - xfs_mount_t *mp = dqp->q_mount; - xfs_buf_t *bp; - - /* - * Check to see if the dquot has been flushed delayed - * write. If so, grab its buffer and send it - * out immediately. We'll be able to acquire - * the flush lock when the I/O completes. - */ - bp = xfs_incore(mp->m_ddev_targp, dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); - if (!bp) - goto out_lock; - - if (XFS_BUF_ISDELAYWRITE(bp)) { - if (xfs_buf_ispinned(bp)) - xfs_log_force(mp, 0); - xfs_buf_delwri_promote(bp); - wake_up_process(bp->b_target->bt_task); - } - xfs_buf_relse(bp); -out_lock: - xfs_dqflock(dqp); -} diff --git a/fs/xfs/quota/xfs_dquot.h b/fs/xfs/quota/xfs_dquot.h deleted file mode 100644 index 34b7e945dbfa..000000000000 --- a/fs/xfs/quota/xfs_dquot.h +++ /dev/null @@ -1,137 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_DQUOT_H__ -#define __XFS_DQUOT_H__ - -/* - * Dquots are structures that hold quota information about a user or a group, - * much like inodes are for files. In fact, dquots share many characteristics - * with inodes. However, dquots can also be a centralized resource, relative - * to a collection of inodes. In this respect, dquots share some characteristics - * of the superblock. - * XFS dquots exploit both those in its algorithms. They make every attempt - * to not be a bottleneck when quotas are on and have minimal impact, if any, - * when quotas are off. - */ - -/* - * The hash chain headers (hash buckets) - */ -typedef struct xfs_dqhash { - struct list_head qh_list; - struct mutex qh_lock; - uint qh_version; /* ever increasing version */ - uint qh_nelems; /* number of dquots on the list */ -} xfs_dqhash_t; - -struct xfs_mount; -struct xfs_trans; - -/* - * The incore dquot structure - */ -typedef struct xfs_dquot { - uint dq_flags; /* various flags (XFS_DQ_*) */ - struct list_head q_freelist; /* global free list of dquots */ - struct list_head q_mplist; /* mount's list of dquots */ - struct list_head q_hashlist; /* gloabl hash list of dquots */ - xfs_dqhash_t *q_hash; /* the hashchain header */ - struct xfs_mount*q_mount; /* filesystem this relates to */ - struct xfs_trans*q_transp; /* trans this belongs to currently */ - uint q_nrefs; /* # active refs from inodes */ - xfs_daddr_t q_blkno; /* blkno of dquot buffer */ - int q_bufoffset; /* off of dq in buffer (# dquots) */ - xfs_fileoff_t q_fileoffset; /* offset in quotas file */ - - struct xfs_dquot*q_gdquot; /* group dquot, hint only */ - xfs_disk_dquot_t q_core; /* actual usage & quotas */ - xfs_dq_logitem_t q_logitem; /* dquot log item */ - xfs_qcnt_t q_res_bcount; /* total regular nblks used+reserved */ - xfs_qcnt_t q_res_icount; /* total inos allocd+reserved */ - xfs_qcnt_t q_res_rtbcount;/* total realtime blks used+reserved */ - struct mutex q_qlock; /* quota lock */ - struct completion q_flush; /* flush completion queue */ - atomic_t q_pincount; /* dquot pin count */ - wait_queue_head_t q_pinwait; /* dquot pinning wait queue */ -} xfs_dquot_t; - -/* - * Lock hierarchy for q_qlock: - * XFS_QLOCK_NORMAL is the implicit default, - * XFS_QLOCK_NESTED is the dquot with the higher id in xfs_dqlock2 - */ -enum { - XFS_QLOCK_NORMAL = 0, - XFS_QLOCK_NESTED, -}; - -#define XFS_DQHOLD(dqp) ((dqp)->q_nrefs++) - -/* - * Manage the q_flush completion queue embedded in the dquot. This completion - * queue synchronizes processes attempting to flush the in-core dquot back to - * disk. - */ -static inline void xfs_dqflock(xfs_dquot_t *dqp) -{ - wait_for_completion(&dqp->q_flush); -} - -static inline int xfs_dqflock_nowait(xfs_dquot_t *dqp) -{ - return try_wait_for_completion(&dqp->q_flush); -} - -static inline void xfs_dqfunlock(xfs_dquot_t *dqp) -{ - complete(&dqp->q_flush); -} - -#define XFS_DQ_IS_LOCKED(dqp) (mutex_is_locked(&((dqp)->q_qlock))) -#define XFS_DQ_IS_DIRTY(dqp) ((dqp)->dq_flags & XFS_DQ_DIRTY) -#define XFS_QM_ISUDQ(dqp) ((dqp)->dq_flags & XFS_DQ_USER) -#define XFS_QM_ISPDQ(dqp) ((dqp)->dq_flags & XFS_DQ_PROJ) -#define XFS_QM_ISGDQ(dqp) ((dqp)->dq_flags & XFS_DQ_GROUP) -#define XFS_DQ_TO_QINF(dqp) ((dqp)->q_mount->m_quotainfo) -#define XFS_DQ_TO_QIP(dqp) (XFS_QM_ISUDQ(dqp) ? \ - XFS_DQ_TO_QINF(dqp)->qi_uquotaip : \ - XFS_DQ_TO_QINF(dqp)->qi_gquotaip) - -#define XFS_IS_THIS_QUOTA_OFF(d) (! (XFS_QM_ISUDQ(d) ? \ - (XFS_IS_UQUOTA_ON((d)->q_mount)) : \ - (XFS_IS_OQUOTA_ON((d)->q_mount)))) - -extern void xfs_qm_dqdestroy(xfs_dquot_t *); -extern int xfs_qm_dqflush(xfs_dquot_t *, uint); -extern int xfs_qm_dqpurge(xfs_dquot_t *); -extern void xfs_qm_dqunpin_wait(xfs_dquot_t *); -extern int xfs_qm_dqlock_nowait(xfs_dquot_t *); -extern void xfs_qm_dqflock_pushbuf_wait(xfs_dquot_t *dqp); -extern void xfs_qm_adjust_dqtimers(xfs_mount_t *, - xfs_disk_dquot_t *); -extern void xfs_qm_adjust_dqlimits(xfs_mount_t *, - xfs_disk_dquot_t *); -extern int xfs_qm_dqget(xfs_mount_t *, xfs_inode_t *, - xfs_dqid_t, uint, uint, xfs_dquot_t **); -extern void xfs_qm_dqput(xfs_dquot_t *); -extern void xfs_dqlock(xfs_dquot_t *); -extern void xfs_dqlock2(xfs_dquot_t *, xfs_dquot_t *); -extern void xfs_dqunlock(xfs_dquot_t *); -extern void xfs_dqunlock_nonotify(xfs_dquot_t *); - -#endif /* __XFS_DQUOT_H__ */ diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c deleted file mode 100644 index 9e0e2fa3f2c8..000000000000 --- a/fs/xfs/quota/xfs_dquot_item.c +++ /dev/null @@ -1,529 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_itable.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_priv.h" -#include "xfs_qm.h" - -static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip) -{ - return container_of(lip, struct xfs_dq_logitem, qli_item); -} - -/* - * returns the number of iovecs needed to log the given dquot item. - */ -STATIC uint -xfs_qm_dquot_logitem_size( - struct xfs_log_item *lip) -{ - /* - * we need only two iovecs, one for the format, one for the real thing - */ - return 2; -} - -/* - * fills in the vector of log iovecs for the given dquot log item. - */ -STATIC void -xfs_qm_dquot_logitem_format( - struct xfs_log_item *lip, - struct xfs_log_iovec *logvec) -{ - struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); - - logvec->i_addr = &qlip->qli_format; - logvec->i_len = sizeof(xfs_dq_logformat_t); - logvec->i_type = XLOG_REG_TYPE_QFORMAT; - logvec++; - logvec->i_addr = &qlip->qli_dquot->q_core; - logvec->i_len = sizeof(xfs_disk_dquot_t); - logvec->i_type = XLOG_REG_TYPE_DQUOT; - - ASSERT(2 == lip->li_desc->lid_size); - qlip->qli_format.qlf_size = 2; - -} - -/* - * Increment the pin count of the given dquot. - */ -STATIC void -xfs_qm_dquot_logitem_pin( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - atomic_inc(&dqp->q_pincount); -} - -/* - * Decrement the pin count of the given dquot, and wake up - * anyone in xfs_dqwait_unpin() if the count goes to 0. The - * dquot must have been previously pinned with a call to - * xfs_qm_dquot_logitem_pin(). - */ -STATIC void -xfs_qm_dquot_logitem_unpin( - struct xfs_log_item *lip, - int remove) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - ASSERT(atomic_read(&dqp->q_pincount) > 0); - if (atomic_dec_and_test(&dqp->q_pincount)) - wake_up(&dqp->q_pinwait); -} - -/* - * Given the logitem, this writes the corresponding dquot entry to disk - * asynchronously. This is called with the dquot entry securely locked; - * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot - * at the end. - */ -STATIC void -xfs_qm_dquot_logitem_push( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - int error; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(!completion_done(&dqp->q_flush)); - - /* - * Since we were able to lock the dquot's flush lock and - * we found it on the AIL, the dquot must be dirty. This - * is because the dquot is removed from the AIL while still - * holding the flush lock in xfs_dqflush_done(). Thus, if - * we found it in the AIL and were able to obtain the flush - * lock without sleeping, then there must not have been - * anyone in the process of flushing the dquot. - */ - error = xfs_qm_dqflush(dqp, 0); - if (error) - xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", - __func__, error, dqp); - xfs_dqunlock(dqp); -} - -STATIC xfs_lsn_t -xfs_qm_dquot_logitem_committed( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ - /* - * We always re-log the entire dquot when it becomes dirty, - * so, the latest copy _is_ the only one that matters. - */ - return lsn; -} - -/* - * This is called to wait for the given dquot to be unpinned. - * Most of these pin/unpin routines are plagiarized from inode code. - */ -void -xfs_qm_dqunpin_wait( - struct xfs_dquot *dqp) -{ - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - if (atomic_read(&dqp->q_pincount) == 0) - return; - - /* - * Give the log a push so we don't wait here too long. - */ - xfs_log_force(dqp->q_mount, 0); - wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); -} - -/* - * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that - * the dquot is locked by us, but the flush lock isn't. So, here we are - * going to see if the relevant dquot buffer is incore, waiting on DELWRI. - * If so, we want to push it out to help us take this item off the AIL as soon - * as possible. - * - * We must not be holding the AIL lock at this point. Calling incore() to - * search the buffer cache can be a time consuming thing, and AIL lock is a - * spinlock. - */ -STATIC void -xfs_qm_dquot_logitem_pushbuf( - struct xfs_log_item *lip) -{ - struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); - struct xfs_dquot *dqp = qlip->qli_dquot; - struct xfs_buf *bp; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - /* - * If flushlock isn't locked anymore, chances are that the - * inode flush completed and the inode was taken off the AIL. - * So, just get out. - */ - if (completion_done(&dqp->q_flush) || - !(lip->li_flags & XFS_LI_IN_AIL)) { - xfs_dqunlock(dqp); - return; - } - - bp = xfs_incore(dqp->q_mount->m_ddev_targp, qlip->qli_format.qlf_blkno, - dqp->q_mount->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); - xfs_dqunlock(dqp); - if (!bp) - return; - if (XFS_BUF_ISDELAYWRITE(bp)) - xfs_buf_delwri_promote(bp); - xfs_buf_relse(bp); -} - -/* - * This is called to attempt to lock the dquot associated with this - * dquot log item. Don't sleep on the dquot lock or the flush lock. - * If the flush lock is already held, indicating that the dquot has - * been or is in the process of being flushed, then see if we can - * find the dquot's buffer in the buffer cache without sleeping. If - * we can and it is marked delayed write, then we want to send it out. - * We delay doing so until the push routine, though, to avoid sleeping - * in any device strategy routines. - */ -STATIC uint -xfs_qm_dquot_logitem_trylock( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - if (atomic_read(&dqp->q_pincount) > 0) - return XFS_ITEM_PINNED; - - if (!xfs_qm_dqlock_nowait(dqp)) - return XFS_ITEM_LOCKED; - - if (!xfs_dqflock_nowait(dqp)) { - /* - * dquot has already been flushed to the backing buffer, - * leave it locked, pushbuf routine will unlock it. - */ - return XFS_ITEM_PUSHBUF; - } - - ASSERT(lip->li_flags & XFS_LI_IN_AIL); - return XFS_ITEM_SUCCESS; -} - -/* - * Unlock the dquot associated with the log item. - * Clear the fields of the dquot and dquot log item that - * are specific to the current transaction. If the - * hold flags is set, do not unlock the dquot. - */ -STATIC void -xfs_qm_dquot_logitem_unlock( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - /* - * Clear the transaction pointer in the dquot - */ - dqp->q_transp = NULL; - - /* - * dquots are never 'held' from getting unlocked at the end of - * a transaction. Their locking and unlocking is hidden inside the - * transaction layer, within trans_commit. Hence, no LI_HOLD flag - * for the logitem. - */ - xfs_dqunlock(dqp); -} - -/* - * this needs to stamp an lsn into the dquot, I think. - * rpc's that look at user dquot's would then have to - * push on the dependency recorded in the dquot - */ -STATIC void -xfs_qm_dquot_logitem_committing( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ -} - -/* - * This is the ops vector for dquots - */ -static struct xfs_item_ops xfs_dquot_item_ops = { - .iop_size = xfs_qm_dquot_logitem_size, - .iop_format = xfs_qm_dquot_logitem_format, - .iop_pin = xfs_qm_dquot_logitem_pin, - .iop_unpin = xfs_qm_dquot_logitem_unpin, - .iop_trylock = xfs_qm_dquot_logitem_trylock, - .iop_unlock = xfs_qm_dquot_logitem_unlock, - .iop_committed = xfs_qm_dquot_logitem_committed, - .iop_push = xfs_qm_dquot_logitem_push, - .iop_pushbuf = xfs_qm_dquot_logitem_pushbuf, - .iop_committing = xfs_qm_dquot_logitem_committing -}; - -/* - * Initialize the dquot log item for a newly allocated dquot. - * The dquot isn't locked at this point, but it isn't on any of the lists - * either, so we don't care. - */ -void -xfs_qm_dquot_logitem_init( - struct xfs_dquot *dqp) -{ - struct xfs_dq_logitem *lp = &dqp->q_logitem; - - xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, - &xfs_dquot_item_ops); - lp->qli_dquot = dqp; - lp->qli_format.qlf_type = XFS_LI_DQUOT; - lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); - lp->qli_format.qlf_blkno = dqp->q_blkno; - lp->qli_format.qlf_len = 1; - /* - * This is just the offset of this dquot within its buffer - * (which is currently 1 FSB and probably won't change). - * Hence 32 bits for this offset should be just fine. - * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) - * here, and recompute it at recovery time. - */ - lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; -} - -/*------------------ QUOTAOFF LOG ITEMS -------------------*/ - -static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) -{ - return container_of(lip, struct xfs_qoff_logitem, qql_item); -} - - -/* - * This returns the number of iovecs needed to log the given quotaoff item. - * We only need 1 iovec for an quotaoff item. It just logs the - * quotaoff_log_format structure. - */ -STATIC uint -xfs_qm_qoff_logitem_size( - struct xfs_log_item *lip) -{ - return 1; -} - -/* - * This is called to fill in the vector of log iovecs for the - * given quotaoff log item. We use only 1 iovec, and we point that - * at the quotaoff_log_format structure embedded in the quotaoff item. - * It is at this point that we assert that all of the extent - * slots in the quotaoff item have been filled. - */ -STATIC void -xfs_qm_qoff_logitem_format( - struct xfs_log_item *lip, - struct xfs_log_iovec *log_vector) -{ - struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); - - ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); - - log_vector->i_addr = &qflip->qql_format; - log_vector->i_len = sizeof(xfs_qoff_logitem_t); - log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; - qflip->qql_format.qf_size = 1; -} - -/* - * Pinning has no meaning for an quotaoff item, so just return. - */ -STATIC void -xfs_qm_qoff_logitem_pin( - struct xfs_log_item *lip) -{ -} - -/* - * Since pinning has no meaning for an quotaoff item, unpinning does - * not either. - */ -STATIC void -xfs_qm_qoff_logitem_unpin( - struct xfs_log_item *lip, - int remove) -{ -} - -/* - * Quotaoff items have no locking, so just return success. - */ -STATIC uint -xfs_qm_qoff_logitem_trylock( - struct xfs_log_item *lip) -{ - return XFS_ITEM_LOCKED; -} - -/* - * Quotaoff items have no locking or pushing, so return failure - * so that the caller doesn't bother with us. - */ -STATIC void -xfs_qm_qoff_logitem_unlock( - struct xfs_log_item *lip) -{ -} - -/* - * The quotaoff-start-item is logged only once and cannot be moved in the log, - * so simply return the lsn at which it's been logged. - */ -STATIC xfs_lsn_t -xfs_qm_qoff_logitem_committed( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ - return lsn; -} - -/* - * There isn't much you can do to push on an quotaoff item. It is simply - * stuck waiting for the log to be flushed to disk. - */ -STATIC void -xfs_qm_qoff_logitem_push( - struct xfs_log_item *lip) -{ -} - - -STATIC xfs_lsn_t -xfs_qm_qoffend_logitem_committed( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ - struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip); - struct xfs_qoff_logitem *qfs = qfe->qql_start_lip; - struct xfs_ail *ailp = qfs->qql_item.li_ailp; - - /* - * Delete the qoff-start logitem from the AIL. - * xfs_trans_ail_delete() drops the AIL lock. - */ - spin_lock(&ailp->xa_lock); - xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); - - kmem_free(qfs); - kmem_free(qfe); - return (xfs_lsn_t)-1; -} - -/* - * XXX rcc - don't know quite what to do with this. I think we can - * just ignore it. The only time that isn't the case is if we allow - * the client to somehow see that quotas have been turned off in which - * we can't allow that to get back until the quotaoff hits the disk. - * So how would that happen? Also, do we need different routines for - * quotaoff start and quotaoff end? I suspect the answer is yes but - * to be sure, I need to look at the recovery code and see how quota off - * recovery is handled (do we roll forward or back or do something else). - * If we roll forwards or backwards, then we need two separate routines, - * one that does nothing and one that stamps in the lsn that matters - * (truly makes the quotaoff irrevocable). If we do something else, - * then maybe we don't need two. - */ -STATIC void -xfs_qm_qoff_logitem_committing( - struct xfs_log_item *lip, - xfs_lsn_t commit_lsn) -{ -} - -static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { - .iop_size = xfs_qm_qoff_logitem_size, - .iop_format = xfs_qm_qoff_logitem_format, - .iop_pin = xfs_qm_qoff_logitem_pin, - .iop_unpin = xfs_qm_qoff_logitem_unpin, - .iop_trylock = xfs_qm_qoff_logitem_trylock, - .iop_unlock = xfs_qm_qoff_logitem_unlock, - .iop_committed = xfs_qm_qoffend_logitem_committed, - .iop_push = xfs_qm_qoff_logitem_push, - .iop_committing = xfs_qm_qoff_logitem_committing -}; - -/* - * This is the ops vector shared by all quotaoff-start log items. - */ -static struct xfs_item_ops xfs_qm_qoff_logitem_ops = { - .iop_size = xfs_qm_qoff_logitem_size, - .iop_format = xfs_qm_qoff_logitem_format, - .iop_pin = xfs_qm_qoff_logitem_pin, - .iop_unpin = xfs_qm_qoff_logitem_unpin, - .iop_trylock = xfs_qm_qoff_logitem_trylock, - .iop_unlock = xfs_qm_qoff_logitem_unlock, - .iop_committed = xfs_qm_qoff_logitem_committed, - .iop_push = xfs_qm_qoff_logitem_push, - .iop_committing = xfs_qm_qoff_logitem_committing -}; - -/* - * Allocate and initialize an quotaoff item of the correct quota type(s). - */ -struct xfs_qoff_logitem * -xfs_qm_qoff_logitem_init( - struct xfs_mount *mp, - struct xfs_qoff_logitem *start, - uint flags) -{ - struct xfs_qoff_logitem *qf; - - qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), KM_SLEEP); - - xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? - &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); - qf->qql_item.li_mountp = mp; - qf->qql_format.qf_type = XFS_LI_QUOTAOFF; - qf->qql_format.qf_flags = flags; - qf->qql_start_lip = start; - return qf; -} diff --git a/fs/xfs/quota/xfs_dquot_item.h b/fs/xfs/quota/xfs_dquot_item.h deleted file mode 100644 index 5acae2ada70b..000000000000 --- a/fs/xfs/quota/xfs_dquot_item.h +++ /dev/null @@ -1,48 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_DQUOT_ITEM_H__ -#define __XFS_DQUOT_ITEM_H__ - -struct xfs_dquot; -struct xfs_trans; -struct xfs_mount; -struct xfs_qoff_logitem; - -typedef struct xfs_dq_logitem { - xfs_log_item_t qli_item; /* common portion */ - struct xfs_dquot *qli_dquot; /* dquot ptr */ - xfs_lsn_t qli_flush_lsn; /* lsn at last flush */ - xfs_dq_logformat_t qli_format; /* logged structure */ -} xfs_dq_logitem_t; - -typedef struct xfs_qoff_logitem { - xfs_log_item_t qql_item; /* common portion */ - struct xfs_qoff_logitem *qql_start_lip; /* qoff-start logitem, if any */ - xfs_qoff_logformat_t qql_format; /* logged structure */ -} xfs_qoff_logitem_t; - - -extern void xfs_qm_dquot_logitem_init(struct xfs_dquot *); -extern xfs_qoff_logitem_t *xfs_qm_qoff_logitem_init(struct xfs_mount *, - struct xfs_qoff_logitem *, uint); -extern xfs_qoff_logitem_t *xfs_trans_get_qoff_item(struct xfs_trans *, - struct xfs_qoff_logitem *, uint); -extern void xfs_trans_log_quotaoff_item(struct xfs_trans *, - struct xfs_qoff_logitem *); - -#endif /* __XFS_DQUOT_ITEM_H__ */ diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c deleted file mode 100644 index 9a0aa76facdf..000000000000 --- a/fs/xfs/quota/xfs_qm.c +++ /dev/null @@ -1,2416 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_ialloc.h" -#include "xfs_itable.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_bmap.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_space.h" -#include "xfs_utils.h" -#include "xfs_qm.h" -#include "xfs_trace.h" - -/* - * The global quota manager. There is only one of these for the entire - * system, _not_ one per file system. XQM keeps track of the overall - * quota functionality, including maintaining the freelist and hash - * tables of dquots. - */ -struct mutex xfs_Gqm_lock; -struct xfs_qm *xfs_Gqm; -uint ndquot; - -kmem_zone_t *qm_dqzone; -kmem_zone_t *qm_dqtrxzone; - -STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); -STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); - -STATIC int xfs_qm_init_quotainos(xfs_mount_t *); -STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); -STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); - -static struct shrinker xfs_qm_shaker = { - .shrink = xfs_qm_shake, - .seeks = DEFAULT_SEEKS, -}; - -/* - * Initialize the XQM structure. - * Note that there is not one quota manager per file system. - */ -STATIC struct xfs_qm * -xfs_Gqm_init(void) -{ - xfs_dqhash_t *udqhash, *gdqhash; - xfs_qm_t *xqm; - size_t hsize; - uint i; - - /* - * Initialize the dquot hash tables. - */ - udqhash = kmem_zalloc_greedy(&hsize, - XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), - XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); - if (!udqhash) - goto out; - - gdqhash = kmem_zalloc_large(hsize); - if (!gdqhash) - goto out_free_udqhash; - - hsize /= sizeof(xfs_dqhash_t); - ndquot = hsize << 8; - - xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); - xqm->qm_dqhashmask = hsize - 1; - xqm->qm_usr_dqhtable = udqhash; - xqm->qm_grp_dqhtable = gdqhash; - ASSERT(xqm->qm_usr_dqhtable != NULL); - ASSERT(xqm->qm_grp_dqhtable != NULL); - - for (i = 0; i < hsize; i++) { - xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); - xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); - } - - /* - * Freelist of all dquots of all file systems - */ - INIT_LIST_HEAD(&xqm->qm_dqfrlist); - xqm->qm_dqfrlist_cnt = 0; - mutex_init(&xqm->qm_dqfrlist_lock); - - /* - * dquot zone. we register our own low-memory callback. - */ - if (!qm_dqzone) { - xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), - "xfs_dquots"); - qm_dqzone = xqm->qm_dqzone; - } else - xqm->qm_dqzone = qm_dqzone; - - register_shrinker(&xfs_qm_shaker); - - /* - * The t_dqinfo portion of transactions. - */ - if (!qm_dqtrxzone) { - xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), - "xfs_dqtrx"); - qm_dqtrxzone = xqm->qm_dqtrxzone; - } else - xqm->qm_dqtrxzone = qm_dqtrxzone; - - atomic_set(&xqm->qm_totaldquots, 0); - xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; - xqm->qm_nrefs = 0; - return xqm; - - out_free_udqhash: - kmem_free_large(udqhash); - out: - return NULL; -} - -/* - * Destroy the global quota manager when its reference count goes to zero. - */ -STATIC void -xfs_qm_destroy( - struct xfs_qm *xqm) -{ - struct xfs_dquot *dqp, *n; - int hsize, i; - - ASSERT(xqm != NULL); - ASSERT(xqm->qm_nrefs == 0); - unregister_shrinker(&xfs_qm_shaker); - hsize = xqm->qm_dqhashmask + 1; - for (i = 0; i < hsize; i++) { - xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); - xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); - } - kmem_free_large(xqm->qm_usr_dqhtable); - kmem_free_large(xqm->qm_grp_dqhtable); - xqm->qm_usr_dqhtable = NULL; - xqm->qm_grp_dqhtable = NULL; - xqm->qm_dqhashmask = 0; - - /* frlist cleanup */ - mutex_lock(&xqm->qm_dqfrlist_lock); - list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { - xfs_dqlock(dqp); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - xfs_dqunlock(dqp); - xfs_qm_dqdestroy(dqp); - } - mutex_unlock(&xqm->qm_dqfrlist_lock); - mutex_destroy(&xqm->qm_dqfrlist_lock); - kmem_free(xqm); -} - -/* - * Called at mount time to let XQM know that another file system is - * starting quotas. This isn't crucial information as the individual mount - * structures are pretty independent, but it helps the XQM keep a - * global view of what's going on. - */ -/* ARGSUSED */ -STATIC int -xfs_qm_hold_quotafs_ref( - struct xfs_mount *mp) -{ - /* - * Need to lock the xfs_Gqm structure for things like this. For example, - * the structure could disappear between the entry to this routine and - * a HOLD operation if not locked. - */ - mutex_lock(&xfs_Gqm_lock); - - if (!xfs_Gqm) { - xfs_Gqm = xfs_Gqm_init(); - if (!xfs_Gqm) { - mutex_unlock(&xfs_Gqm_lock); - return ENOMEM; - } - } - - /* - * We can keep a list of all filesystems with quotas mounted for - * debugging and statistical purposes, but ... - * Just take a reference and get out. - */ - xfs_Gqm->qm_nrefs++; - mutex_unlock(&xfs_Gqm_lock); - - return 0; -} - - -/* - * Release the reference that a filesystem took at mount time, - * so that we know when we need to destroy the entire quota manager. - */ -/* ARGSUSED */ -STATIC void -xfs_qm_rele_quotafs_ref( - struct xfs_mount *mp) -{ - xfs_dquot_t *dqp, *n; - - ASSERT(xfs_Gqm); - ASSERT(xfs_Gqm->qm_nrefs > 0); - - /* - * Go thru the freelist and destroy all inactive dquots. - */ - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - - list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { - xfs_dqlock(dqp); - if (dqp->dq_flags & XFS_DQ_INACTIVE) { - ASSERT(dqp->q_mount == NULL); - ASSERT(! XFS_DQ_IS_DIRTY(dqp)); - ASSERT(list_empty(&dqp->q_hashlist)); - ASSERT(list_empty(&dqp->q_mplist)); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - xfs_dqunlock(dqp); - xfs_qm_dqdestroy(dqp); - } else { - xfs_dqunlock(dqp); - } - } - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - - /* - * Destroy the entire XQM. If somebody mounts with quotaon, this'll - * be restarted. - */ - mutex_lock(&xfs_Gqm_lock); - if (--xfs_Gqm->qm_nrefs == 0) { - xfs_qm_destroy(xfs_Gqm); - xfs_Gqm = NULL; - } - mutex_unlock(&xfs_Gqm_lock); -} - -/* - * Just destroy the quotainfo structure. - */ -void -xfs_qm_unmount( - struct xfs_mount *mp) -{ - if (mp->m_quotainfo) { - xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); - xfs_qm_destroy_quotainfo(mp); - } -} - - -/* - * This is called from xfs_mountfs to start quotas and initialize all - * necessary data structures like quotainfo. This is also responsible for - * running a quotacheck as necessary. We are guaranteed that the superblock - * is consistently read in at this point. - * - * If we fail here, the mount will continue with quota turned off. We don't - * need to inidicate success or failure at all. - */ -void -xfs_qm_mount_quotas( - xfs_mount_t *mp) -{ - int error = 0; - uint sbf; - - /* - * If quotas on realtime volumes is not supported, we disable - * quotas immediately. - */ - if (mp->m_sb.sb_rextents) { - xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); - mp->m_qflags = 0; - goto write_changes; - } - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * Allocate the quotainfo structure inside the mount struct, and - * create quotainode(s), and change/rev superblock if necessary. - */ - error = xfs_qm_init_quotainfo(mp); - if (error) { - /* - * We must turn off quotas. - */ - ASSERT(mp->m_quotainfo == NULL); - mp->m_qflags = 0; - goto write_changes; - } - /* - * If any of the quotas are not consistent, do a quotacheck. - */ - if (XFS_QM_NEED_QUOTACHECK(mp)) { - error = xfs_qm_quotacheck(mp); - if (error) { - /* Quotacheck failed and disabled quotas. */ - return; - } - } - /* - * If one type of quotas is off, then it will lose its - * quotachecked status, since we won't be doing accounting for - * that type anymore. - */ - if (!XFS_IS_UQUOTA_ON(mp)) - mp->m_qflags &= ~XFS_UQUOTA_CHKD; - if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) - mp->m_qflags &= ~XFS_OQUOTA_CHKD; - - write_changes: - /* - * We actually don't have to acquire the m_sb_lock at all. - * This can only be called from mount, and that's single threaded. XXX - */ - spin_lock(&mp->m_sb_lock); - sbf = mp->m_sb.sb_qflags; - mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; - spin_unlock(&mp->m_sb_lock); - - if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { - if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { - /* - * We could only have been turning quotas off. - * We aren't in very good shape actually because - * the incore structures are convinced that quotas are - * off, but the on disk superblock doesn't know that ! - */ - ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); - xfs_alert(mp, "%s: Superblock update failed!", - __func__); - } - } - - if (error) { - xfs_warn(mp, "Failed to initialize disk quotas."); - return; - } -} - -/* - * Called from the vfsops layer. - */ -void -xfs_qm_unmount_quotas( - xfs_mount_t *mp) -{ - /* - * Release the dquots that root inode, et al might be holding, - * before we flush quotas and blow away the quotainfo structure. - */ - ASSERT(mp->m_rootip); - xfs_qm_dqdetach(mp->m_rootip); - if (mp->m_rbmip) - xfs_qm_dqdetach(mp->m_rbmip); - if (mp->m_rsumip) - xfs_qm_dqdetach(mp->m_rsumip); - - /* - * Release the quota inodes. - */ - if (mp->m_quotainfo) { - if (mp->m_quotainfo->qi_uquotaip) { - IRELE(mp->m_quotainfo->qi_uquotaip); - mp->m_quotainfo->qi_uquotaip = NULL; - } - if (mp->m_quotainfo->qi_gquotaip) { - IRELE(mp->m_quotainfo->qi_gquotaip); - mp->m_quotainfo->qi_gquotaip = NULL; - } - } -} - -/* - * Flush all dquots of the given file system to disk. The dquots are - * _not_ purged from memory here, just their data written to disk. - */ -STATIC int -xfs_qm_dqflush_all( - struct xfs_mount *mp, - int sync_mode) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - int recl; - struct xfs_dquot *dqp; - int error; - - if (!q) - return 0; -again: - mutex_lock(&q->qi_dqlist_lock); - list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { - xfs_dqlock(dqp); - if (! XFS_DQ_IS_DIRTY(dqp)) { - xfs_dqunlock(dqp); - continue; - } - - /* XXX a sentinel would be better */ - recl = q->qi_dqreclaims; - if (!xfs_dqflock_nowait(dqp)) { - /* - * If we can't grab the flush lock then check - * to see if the dquot has been flushed delayed - * write. If so, grab its buffer and send it - * out immediately. We'll be able to acquire - * the flush lock when the I/O completes. - */ - xfs_qm_dqflock_pushbuf_wait(dqp); - } - /* - * Let go of the mplist lock. We don't want to hold it - * across a disk write. - */ - mutex_unlock(&q->qi_dqlist_lock); - error = xfs_qm_dqflush(dqp, sync_mode); - xfs_dqunlock(dqp); - if (error) - return error; - - mutex_lock(&q->qi_dqlist_lock); - if (recl != q->qi_dqreclaims) { - mutex_unlock(&q->qi_dqlist_lock); - /* XXX restart limit */ - goto again; - } - } - - mutex_unlock(&q->qi_dqlist_lock); - /* return ! busy */ - return 0; -} -/* - * Release the group dquot pointers the user dquots may be - * carrying around as a hint. mplist is locked on entry and exit. - */ -STATIC void -xfs_qm_detach_gdquots( - struct xfs_mount *mp) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - struct xfs_dquot *dqp, *gdqp; - int nrecl; - - again: - ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); - list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { - xfs_dqlock(dqp); - if ((gdqp = dqp->q_gdquot)) { - xfs_dqlock(gdqp); - dqp->q_gdquot = NULL; - } - xfs_dqunlock(dqp); - - if (gdqp) { - /* - * Can't hold the mplist lock across a dqput. - * XXXmust convert to marker based iterations here. - */ - nrecl = q->qi_dqreclaims; - mutex_unlock(&q->qi_dqlist_lock); - xfs_qm_dqput(gdqp); - - mutex_lock(&q->qi_dqlist_lock); - if (nrecl != q->qi_dqreclaims) - goto again; - } - } -} - -/* - * Go through all the incore dquots of this file system and take them - * off the mplist and hashlist, if the dquot type matches the dqtype - * parameter. This is used when turning off quota accounting for - * users and/or groups, as well as when the filesystem is unmounting. - */ -STATIC int -xfs_qm_dqpurge_int( - struct xfs_mount *mp, - uint flags) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - struct xfs_dquot *dqp, *n; - uint dqtype; - int nrecl; - int nmisses; - - if (!q) - return 0; - - dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; - dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; - dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; - - mutex_lock(&q->qi_dqlist_lock); - - /* - * In the first pass through all incore dquots of this filesystem, - * we release the group dquot pointers the user dquots may be - * carrying around as a hint. We need to do this irrespective of - * what's being turned off. - */ - xfs_qm_detach_gdquots(mp); - - again: - nmisses = 0; - ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); - /* - * Try to get rid of all of the unwanted dquots. The idea is to - * get them off mplist and hashlist, but leave them on freelist. - */ - list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { - /* - * It's OK to look at the type without taking dqlock here. - * We're holding the mplist lock here, and that's needed for - * a dqreclaim. - */ - if ((dqp->dq_flags & dqtype) == 0) - continue; - - if (!mutex_trylock(&dqp->q_hash->qh_lock)) { - nrecl = q->qi_dqreclaims; - mutex_unlock(&q->qi_dqlist_lock); - mutex_lock(&dqp->q_hash->qh_lock); - mutex_lock(&q->qi_dqlist_lock); - - /* - * XXXTheoretically, we can get into a very long - * ping pong game here. - * No one can be adding dquots to the mplist at - * this point, but somebody might be taking things off. - */ - if (nrecl != q->qi_dqreclaims) { - mutex_unlock(&dqp->q_hash->qh_lock); - goto again; - } - } - - /* - * Take the dquot off the mplist and hashlist. It may remain on - * freelist in INACTIVE state. - */ - nmisses += xfs_qm_dqpurge(dqp); - } - mutex_unlock(&q->qi_dqlist_lock); - return nmisses; -} - -int -xfs_qm_dqpurge_all( - xfs_mount_t *mp, - uint flags) -{ - int ndquots; - - /* - * Purge the dquot cache. - * None of the dquots should really be busy at this point. - */ - if (mp->m_quotainfo) { - while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { - delay(ndquots * 10); - } - } - return 0; -} - -STATIC int -xfs_qm_dqattach_one( - xfs_inode_t *ip, - xfs_dqid_t id, - uint type, - uint doalloc, - xfs_dquot_t *udqhint, /* hint */ - xfs_dquot_t **IO_idqpp) -{ - xfs_dquot_t *dqp; - int error; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - error = 0; - - /* - * See if we already have it in the inode itself. IO_idqpp is - * &i_udquot or &i_gdquot. This made the code look weird, but - * made the logic a lot simpler. - */ - dqp = *IO_idqpp; - if (dqp) { - trace_xfs_dqattach_found(dqp); - return 0; - } - - /* - * udqhint is the i_udquot field in inode, and is non-NULL only - * when the type arg is group/project. Its purpose is to save a - * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside - * the user dquot. - */ - if (udqhint) { - ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); - xfs_dqlock(udqhint); - - /* - * No need to take dqlock to look at the id. - * - * The ID can't change until it gets reclaimed, and it won't - * be reclaimed as long as we have a ref from inode and we - * hold the ilock. - */ - dqp = udqhint->q_gdquot; - if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { - xfs_dqlock(dqp); - XFS_DQHOLD(dqp); - ASSERT(*IO_idqpp == NULL); - *IO_idqpp = dqp; - - xfs_dqunlock(dqp); - xfs_dqunlock(udqhint); - return 0; - } - - /* - * We can't hold a dquot lock when we call the dqget code. - * We'll deadlock in no time, because of (not conforming to) - * lock ordering - the inodelock comes before any dquot lock, - * and we may drop and reacquire the ilock in xfs_qm_dqget(). - */ - xfs_dqunlock(udqhint); - } - - /* - * Find the dquot from somewhere. This bumps the - * reference count of dquot and returns it locked. - * This can return ENOENT if dquot didn't exist on - * disk and we didn't ask it to allocate; - * ESRCH if quotas got turned off suddenly. - */ - error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); - if (error) - return error; - - trace_xfs_dqattach_get(dqp); - - /* - * dqget may have dropped and re-acquired the ilock, but it guarantees - * that the dquot returned is the one that should go in the inode. - */ - *IO_idqpp = dqp; - xfs_dqunlock(dqp); - return 0; -} - - -/* - * Given a udquot and gdquot, attach a ptr to the group dquot in the - * udquot as a hint for future lookups. The idea sounds simple, but the - * execution isn't, because the udquot might have a group dquot attached - * already and getting rid of that gets us into lock ordering constraints. - * The process is complicated more by the fact that the dquots may or may not - * be locked on entry. - */ -STATIC void -xfs_qm_dqattach_grouphint( - xfs_dquot_t *udq, - xfs_dquot_t *gdq) -{ - xfs_dquot_t *tmp; - - xfs_dqlock(udq); - - if ((tmp = udq->q_gdquot)) { - if (tmp == gdq) { - xfs_dqunlock(udq); - return; - } - - udq->q_gdquot = NULL; - /* - * We can't keep any dqlocks when calling dqrele, - * because the freelist lock comes before dqlocks. - */ - xfs_dqunlock(udq); - /* - * we took a hard reference once upon a time in dqget, - * so give it back when the udquot no longer points at it - * dqput() does the unlocking of the dquot. - */ - xfs_qm_dqrele(tmp); - - xfs_dqlock(udq); - xfs_dqlock(gdq); - - } else { - ASSERT(XFS_DQ_IS_LOCKED(udq)); - xfs_dqlock(gdq); - } - - ASSERT(XFS_DQ_IS_LOCKED(udq)); - ASSERT(XFS_DQ_IS_LOCKED(gdq)); - /* - * Somebody could have attached a gdquot here, - * when we dropped the uqlock. If so, just do nothing. - */ - if (udq->q_gdquot == NULL) { - XFS_DQHOLD(gdq); - udq->q_gdquot = gdq; - } - - xfs_dqunlock(gdq); - xfs_dqunlock(udq); -} - - -/* - * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON - * into account. - * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. - * Inode may get unlocked and relocked in here, and the caller must deal with - * the consequences. - */ -int -xfs_qm_dqattach_locked( - xfs_inode_t *ip, - uint flags) -{ - xfs_mount_t *mp = ip->i_mount; - uint nquotas = 0; - int error = 0; - - if (!XFS_IS_QUOTA_RUNNING(mp) || - !XFS_IS_QUOTA_ON(mp) || - !XFS_NOT_DQATTACHED(mp, ip) || - ip->i_ino == mp->m_sb.sb_uquotino || - ip->i_ino == mp->m_sb.sb_gquotino) - return 0; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - - if (XFS_IS_UQUOTA_ON(mp)) { - error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, - flags & XFS_QMOPT_DQALLOC, - NULL, &ip->i_udquot); - if (error) - goto done; - nquotas++; - } - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - if (XFS_IS_OQUOTA_ON(mp)) { - error = XFS_IS_GQUOTA_ON(mp) ? - xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, - flags & XFS_QMOPT_DQALLOC, - ip->i_udquot, &ip->i_gdquot) : - xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, - flags & XFS_QMOPT_DQALLOC, - ip->i_udquot, &ip->i_gdquot); - /* - * Don't worry about the udquot that we may have - * attached above. It'll get detached, if not already. - */ - if (error) - goto done; - nquotas++; - } - - /* - * Attach this group quota to the user quota as a hint. - * This WON'T, in general, result in a thrash. - */ - if (nquotas == 2) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(ip->i_udquot); - ASSERT(ip->i_gdquot); - - /* - * We may or may not have the i_udquot locked at this point, - * but this check is OK since we don't depend on the i_gdquot to - * be accurate 100% all the time. It is just a hint, and this - * will succeed in general. - */ - if (ip->i_udquot->q_gdquot == ip->i_gdquot) - goto done; - /* - * Attach i_gdquot to the gdquot hint inside the i_udquot. - */ - xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); - } - - done: -#ifdef DEBUG - if (!error) { - if (XFS_IS_UQUOTA_ON(mp)) - ASSERT(ip->i_udquot); - if (XFS_IS_OQUOTA_ON(mp)) - ASSERT(ip->i_gdquot); - } - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); -#endif - return error; -} - -int -xfs_qm_dqattach( - struct xfs_inode *ip, - uint flags) -{ - int error; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_qm_dqattach_locked(ip, flags); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - return error; -} - -/* - * Release dquots (and their references) if any. - * The inode should be locked EXCL except when this's called by - * xfs_ireclaim. - */ -void -xfs_qm_dqdetach( - xfs_inode_t *ip) -{ - if (!(ip->i_udquot || ip->i_gdquot)) - return; - - trace_xfs_dquot_dqdetach(ip); - - ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); - ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); - if (ip->i_udquot) { - xfs_qm_dqrele(ip->i_udquot); - ip->i_udquot = NULL; - } - if (ip->i_gdquot) { - xfs_qm_dqrele(ip->i_gdquot); - ip->i_gdquot = NULL; - } -} - -int -xfs_qm_sync( - struct xfs_mount *mp, - int flags) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - int recl, restarts; - struct xfs_dquot *dqp; - int error; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - restarts = 0; - - again: - mutex_lock(&q->qi_dqlist_lock); - /* - * dqpurge_all() also takes the mplist lock and iterate thru all dquots - * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared - * when we have the mplist lock, we know that dquots will be consistent - * as long as we have it locked. - */ - if (!XFS_IS_QUOTA_ON(mp)) { - mutex_unlock(&q->qi_dqlist_lock); - return 0; - } - ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); - list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { - /* - * If this is vfs_sync calling, then skip the dquots that - * don't 'seem' to be dirty. ie. don't acquire dqlock. - * This is very similar to what xfs_sync does with inodes. - */ - if (flags & SYNC_TRYLOCK) { - if (!XFS_DQ_IS_DIRTY(dqp)) - continue; - if (!xfs_qm_dqlock_nowait(dqp)) - continue; - } else { - xfs_dqlock(dqp); - } - - /* - * Now, find out for sure if this dquot is dirty or not. - */ - if (! XFS_DQ_IS_DIRTY(dqp)) { - xfs_dqunlock(dqp); - continue; - } - - /* XXX a sentinel would be better */ - recl = q->qi_dqreclaims; - if (!xfs_dqflock_nowait(dqp)) { - if (flags & SYNC_TRYLOCK) { - xfs_dqunlock(dqp); - continue; - } - /* - * If we can't grab the flush lock then if the caller - * really wanted us to give this our best shot, so - * see if we can give a push to the buffer before we wait - * on the flush lock. At this point, we know that - * even though the dquot is being flushed, - * it has (new) dirty data. - */ - xfs_qm_dqflock_pushbuf_wait(dqp); - } - /* - * Let go of the mplist lock. We don't want to hold it - * across a disk write - */ - mutex_unlock(&q->qi_dqlist_lock); - error = xfs_qm_dqflush(dqp, flags); - xfs_dqunlock(dqp); - if (error && XFS_FORCED_SHUTDOWN(mp)) - return 0; /* Need to prevent umount failure */ - else if (error) - return error; - - mutex_lock(&q->qi_dqlist_lock); - if (recl != q->qi_dqreclaims) { - if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) - break; - - mutex_unlock(&q->qi_dqlist_lock); - goto again; - } - } - - mutex_unlock(&q->qi_dqlist_lock); - return 0; -} - -/* - * The hash chains and the mplist use the same xfs_dqhash structure as - * their list head, but we can take the mplist qh_lock and one of the - * hash qh_locks at the same time without any problem as they aren't - * related. - */ -static struct lock_class_key xfs_quota_mplist_class; - -/* - * This initializes all the quota information that's kept in the - * mount structure - */ -STATIC int -xfs_qm_init_quotainfo( - xfs_mount_t *mp) -{ - xfs_quotainfo_t *qinf; - int error; - xfs_dquot_t *dqp; - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * Tell XQM that we exist as soon as possible. - */ - if ((error = xfs_qm_hold_quotafs_ref(mp))) { - return error; - } - - qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); - - /* - * See if quotainodes are setup, and if not, allocate them, - * and change the superblock accordingly. - */ - if ((error = xfs_qm_init_quotainos(mp))) { - kmem_free(qinf); - mp->m_quotainfo = NULL; - return error; - } - - INIT_LIST_HEAD(&qinf->qi_dqlist); - mutex_init(&qinf->qi_dqlist_lock); - lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); - - qinf->qi_dqreclaims = 0; - - /* mutex used to serialize quotaoffs */ - mutex_init(&qinf->qi_quotaofflock); - - /* Precalc some constants */ - qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); - ASSERT(qinf->qi_dqchunklen); - qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); - do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); - - mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); - - /* - * We try to get the limits from the superuser's limits fields. - * This is quite hacky, but it is standard quota practice. - * We look at the USR dquot with id == 0 first, but if user quotas - * are not enabled we goto the GRP dquot with id == 0. - * We don't really care to keep separate default limits for user - * and group quotas, at least not at this point. - */ - error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, - XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : - (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : - XFS_DQ_PROJ), - XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, - &dqp); - if (! error) { - xfs_disk_dquot_t *ddqp = &dqp->q_core; - - /* - * The warnings and timers set the grace period given to - * a user or group before he or she can not perform any - * more writing. If it is zero, a default is used. - */ - qinf->qi_btimelimit = ddqp->d_btimer ? - be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; - qinf->qi_itimelimit = ddqp->d_itimer ? - be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; - qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? - be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; - qinf->qi_bwarnlimit = ddqp->d_bwarns ? - be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; - qinf->qi_iwarnlimit = ddqp->d_iwarns ? - be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; - qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? - be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; - qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); - qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); - qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); - qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); - qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); - qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); - - /* - * We sent the XFS_QMOPT_DQSUSER flag to dqget because - * we don't want this dquot cached. We haven't done a - * quotacheck yet, and quotacheck doesn't like incore dquots. - */ - xfs_qm_dqdestroy(dqp); - } else { - qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; - qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; - qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; - qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; - qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; - qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; - } - - return 0; -} - - -/* - * Gets called when unmounting a filesystem or when all quotas get - * turned off. - * This purges the quota inodes, destroys locks and frees itself. - */ -void -xfs_qm_destroy_quotainfo( - xfs_mount_t *mp) -{ - xfs_quotainfo_t *qi; - - qi = mp->m_quotainfo; - ASSERT(qi != NULL); - ASSERT(xfs_Gqm != NULL); - - /* - * Release the reference that XQM kept, so that we know - * when the XQM structure should be freed. We cannot assume - * that xfs_Gqm is non-null after this point. - */ - xfs_qm_rele_quotafs_ref(mp); - - ASSERT(list_empty(&qi->qi_dqlist)); - mutex_destroy(&qi->qi_dqlist_lock); - - if (qi->qi_uquotaip) { - IRELE(qi->qi_uquotaip); - qi->qi_uquotaip = NULL; /* paranoia */ - } - if (qi->qi_gquotaip) { - IRELE(qi->qi_gquotaip); - qi->qi_gquotaip = NULL; - } - mutex_destroy(&qi->qi_quotaofflock); - kmem_free(qi); - mp->m_quotainfo = NULL; -} - - - -/* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ - -/* ARGSUSED */ -STATIC void -xfs_qm_list_init( - xfs_dqlist_t *list, - char *str, - int n) -{ - mutex_init(&list->qh_lock); - INIT_LIST_HEAD(&list->qh_list); - list->qh_version = 0; - list->qh_nelems = 0; -} - -STATIC void -xfs_qm_list_destroy( - xfs_dqlist_t *list) -{ - mutex_destroy(&(list->qh_lock)); -} - -/* - * Create an inode and return with a reference already taken, but unlocked - * This is how we create quota inodes - */ -STATIC int -xfs_qm_qino_alloc( - xfs_mount_t *mp, - xfs_inode_t **ip, - __int64_t sbfields, - uint flags) -{ - xfs_trans_t *tp; - int error; - int committed; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); - if ((error = xfs_trans_reserve(tp, - XFS_QM_QINOCREATE_SPACE_RES(mp), - XFS_CREATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_CREATE_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return error; - } - - error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); - if (error) { - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT); - return error; - } - - /* - * Make the changes in the superblock, and log those too. - * sbfields arg may contain fields other than *QUOTINO; - * VERSIONNUM for example. - */ - spin_lock(&mp->m_sb_lock); - if (flags & XFS_QMOPT_SBVERSION) { - ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); - ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == - (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); - - xfs_sb_version_addquota(&mp->m_sb); - mp->m_sb.sb_uquotino = NULLFSINO; - mp->m_sb.sb_gquotino = NULLFSINO; - - /* qflags will get updated _after_ quotacheck */ - mp->m_sb.sb_qflags = 0; - } - if (flags & XFS_QMOPT_UQUOTA) - mp->m_sb.sb_uquotino = (*ip)->i_ino; - else - mp->m_sb.sb_gquotino = (*ip)->i_ino; - spin_unlock(&mp->m_sb_lock); - xfs_mod_sb(tp, sbfields); - - if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { - xfs_alert(mp, "%s failed (error %d)!", __func__, error); - return error; - } - return 0; -} - - -STATIC void -xfs_qm_reset_dqcounts( - xfs_mount_t *mp, - xfs_buf_t *bp, - xfs_dqid_t id, - uint type) -{ - xfs_disk_dquot_t *ddq; - int j; - - trace_xfs_reset_dqcounts(bp, _RET_IP_); - - /* - * Reset all counters and timers. They'll be - * started afresh by xfs_qm_quotacheck. - */ -#ifdef DEBUG - j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); - do_div(j, sizeof(xfs_dqblk_t)); - ASSERT(mp->m_quotainfo->qi_dqperchunk == j); -#endif - ddq = bp->b_addr; - for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { - /* - * Do a sanity check, and if needed, repair the dqblk. Don't - * output any warnings because it's perfectly possible to - * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. - */ - (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, - "xfs_quotacheck"); - ddq->d_bcount = 0; - ddq->d_icount = 0; - ddq->d_rtbcount = 0; - ddq->d_btimer = 0; - ddq->d_itimer = 0; - ddq->d_rtbtimer = 0; - ddq->d_bwarns = 0; - ddq->d_iwarns = 0; - ddq->d_rtbwarns = 0; - ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); - } -} - -STATIC int -xfs_qm_dqiter_bufs( - xfs_mount_t *mp, - xfs_dqid_t firstid, - xfs_fsblock_t bno, - xfs_filblks_t blkcnt, - uint flags) -{ - xfs_buf_t *bp; - int error; - int type; - - ASSERT(blkcnt > 0); - type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : - (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); - error = 0; - - /* - * Blkcnt arg can be a very big number, and might even be - * larger than the log itself. So, we have to break it up into - * manageable-sized transactions. - * Note that we don't start a permanent transaction here; we might - * not be able to get a log reservation for the whole thing up front, - * and we don't really care to either, because we just discard - * everything if we were to crash in the middle of this loop. - */ - while (blkcnt--) { - error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, - XFS_FSB_TO_DADDR(mp, bno), - mp->m_quotainfo->qi_dqchunklen, 0, &bp); - if (error) - break; - - xfs_qm_reset_dqcounts(mp, bp, firstid, type); - xfs_bdwrite(mp, bp); - /* - * goto the next block. - */ - bno++; - firstid += mp->m_quotainfo->qi_dqperchunk; - } - return error; -} - -/* - * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a - * caller supplied function for every chunk of dquots that we find. - */ -STATIC int -xfs_qm_dqiterate( - xfs_mount_t *mp, - xfs_inode_t *qip, - uint flags) -{ - xfs_bmbt_irec_t *map; - int i, nmaps; /* number of map entries */ - int error; /* return value */ - xfs_fileoff_t lblkno; - xfs_filblks_t maxlblkcnt; - xfs_dqid_t firstid; - xfs_fsblock_t rablkno; - xfs_filblks_t rablkcnt; - - error = 0; - /* - * This looks racy, but we can't keep an inode lock across a - * trans_reserve. But, this gets called during quotacheck, and that - * happens only at mount time which is single threaded. - */ - if (qip->i_d.di_nblocks == 0) - return 0; - - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); - - lblkno = 0; - maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); - do { - nmaps = XFS_DQITER_MAP_SIZE; - /* - * We aren't changing the inode itself. Just changing - * some of its data. No new blocks are added here, and - * the inode is never added to the transaction. - */ - xfs_ilock(qip, XFS_ILOCK_SHARED); - error = xfs_bmapi(NULL, qip, lblkno, - maxlblkcnt - lblkno, - XFS_BMAPI_METADATA, - NULL, - 0, map, &nmaps, NULL); - xfs_iunlock(qip, XFS_ILOCK_SHARED); - if (error) - break; - - ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); - for (i = 0; i < nmaps; i++) { - ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); - ASSERT(map[i].br_blockcount); - - - lblkno += map[i].br_blockcount; - - if (map[i].br_startblock == HOLESTARTBLOCK) - continue; - - firstid = (xfs_dqid_t) map[i].br_startoff * - mp->m_quotainfo->qi_dqperchunk; - /* - * Do a read-ahead on the next extent. - */ - if ((i+1 < nmaps) && - (map[i+1].br_startblock != HOLESTARTBLOCK)) { - rablkcnt = map[i+1].br_blockcount; - rablkno = map[i+1].br_startblock; - while (rablkcnt--) { - xfs_buf_readahead(mp->m_ddev_targp, - XFS_FSB_TO_DADDR(mp, rablkno), - mp->m_quotainfo->qi_dqchunklen); - rablkno++; - } - } - /* - * Iterate thru all the blks in the extent and - * reset the counters of all the dquots inside them. - */ - if ((error = xfs_qm_dqiter_bufs(mp, - firstid, - map[i].br_startblock, - map[i].br_blockcount, - flags))) { - break; - } - } - - if (error) - break; - } while (nmaps > 0); - - kmem_free(map); - - return error; -} - -/* - * Called by dqusage_adjust in doing a quotacheck. - * - * Given the inode, and a dquot id this updates both the incore dqout as well - * as the buffer copy. This is so that once the quotacheck is done, we can - * just log all the buffers, as opposed to logging numerous updates to - * individual dquots. - */ -STATIC int -xfs_qm_quotacheck_dqadjust( - struct xfs_inode *ip, - xfs_dqid_t id, - uint type, - xfs_qcnt_t nblks, - xfs_qcnt_t rtblks) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_dquot *dqp; - int error; - - error = xfs_qm_dqget(mp, ip, id, type, - XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); - if (error) { - /* - * Shouldn't be able to turn off quotas here. - */ - ASSERT(error != ESRCH); - ASSERT(error != ENOENT); - return error; - } - - trace_xfs_dqadjust(dqp); - - /* - * Adjust the inode count and the block count to reflect this inode's - * resource usage. - */ - be64_add_cpu(&dqp->q_core.d_icount, 1); - dqp->q_res_icount++; - if (nblks) { - be64_add_cpu(&dqp->q_core.d_bcount, nblks); - dqp->q_res_bcount += nblks; - } - if (rtblks) { - be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); - dqp->q_res_rtbcount += rtblks; - } - - /* - * Set default limits, adjust timers (since we changed usages) - * - * There are no timers for the default values set in the root dquot. - */ - if (dqp->q_core.d_id) { - xfs_qm_adjust_dqlimits(mp, &dqp->q_core); - xfs_qm_adjust_dqtimers(mp, &dqp->q_core); - } - - dqp->dq_flags |= XFS_DQ_DIRTY; - xfs_qm_dqput(dqp); - return 0; -} - -STATIC int -xfs_qm_get_rtblks( - xfs_inode_t *ip, - xfs_qcnt_t *O_rtblks) -{ - xfs_filblks_t rtblks; /* total rt blks */ - xfs_extnum_t idx; /* extent record index */ - xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_extnum_t nextents; /* number of extent entries */ - int error; - - ASSERT(XFS_IS_REALTIME_INODE(ip)); - ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); - if (!(ifp->if_flags & XFS_IFEXTENTS)) { - if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) - return error; - } - rtblks = 0; - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - for (idx = 0; idx < nextents; idx++) - rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); - *O_rtblks = (xfs_qcnt_t)rtblks; - return 0; -} - -/* - * callback routine supplied to bulkstat(). Given an inumber, find its - * dquots and update them to account for resources taken by that inode. - */ -/* ARGSUSED */ -STATIC int -xfs_qm_dqusage_adjust( - xfs_mount_t *mp, /* mount point for filesystem */ - xfs_ino_t ino, /* inode number to get data for */ - void __user *buffer, /* not used */ - int ubsize, /* not used */ - int *ubused, /* not used */ - int *res) /* result code value */ -{ - xfs_inode_t *ip; - xfs_qcnt_t nblks, rtblks = 0; - int error; - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * rootino must have its resources accounted for, not so with the quota - * inodes. - */ - if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { - *res = BULKSTAT_RV_NOTHING; - return XFS_ERROR(EINVAL); - } - - /* - * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget - * interface expects the inode to be exclusively locked because that's - * the case in all other instances. It's OK that we do this because - * quotacheck is done only at mount time. - */ - error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); - if (error) { - *res = BULKSTAT_RV_NOTHING; - return error; - } - - ASSERT(ip->i_delayed_blks == 0); - - if (XFS_IS_REALTIME_INODE(ip)) { - /* - * Walk thru the extent list and count the realtime blocks. - */ - error = xfs_qm_get_rtblks(ip, &rtblks); - if (error) - goto error0; - } - - nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; - - /* - * Add the (disk blocks and inode) resources occupied by this - * inode to its dquots. We do this adjustment in the incore dquot, - * and also copy the changes to its buffer. - * We don't care about putting these changes in a transaction - * envelope because if we crash in the middle of a 'quotacheck' - * we have to start from the beginning anyway. - * Once we're done, we'll log all the dquot bufs. - * - * The *QUOTA_ON checks below may look pretty racy, but quotachecks - * and quotaoffs don't race. (Quotachecks happen at mount time only). - */ - if (XFS_IS_UQUOTA_ON(mp)) { - error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, - XFS_DQ_USER, nblks, rtblks); - if (error) - goto error0; - } - - if (XFS_IS_GQUOTA_ON(mp)) { - error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, - XFS_DQ_GROUP, nblks, rtblks); - if (error) - goto error0; - } - - if (XFS_IS_PQUOTA_ON(mp)) { - error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), - XFS_DQ_PROJ, nblks, rtblks); - if (error) - goto error0; - } - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - IRELE(ip); - *res = BULKSTAT_RV_DIDONE; - return 0; - -error0: - xfs_iunlock(ip, XFS_ILOCK_EXCL); - IRELE(ip); - *res = BULKSTAT_RV_GIVEUP; - return error; -} - -/* - * Walk thru all the filesystem inodes and construct a consistent view - * of the disk quota world. If the quotacheck fails, disable quotas. - */ -int -xfs_qm_quotacheck( - xfs_mount_t *mp) -{ - int done, count, error; - xfs_ino_t lastino; - size_t structsz; - xfs_inode_t *uip, *gip; - uint flags; - - count = INT_MAX; - structsz = 1; - lastino = 0; - flags = 0; - - ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * There should be no cached dquots. The (simplistic) quotacheck - * algorithm doesn't like that. - */ - ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); - - xfs_notice(mp, "Quotacheck needed: Please wait."); - - /* - * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset - * their counters to zero. We need a clean slate. - * We don't log our changes till later. - */ - uip = mp->m_quotainfo->qi_uquotaip; - if (uip) { - error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); - if (error) - goto error_return; - flags |= XFS_UQUOTA_CHKD; - } - - gip = mp->m_quotainfo->qi_gquotaip; - if (gip) { - error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? - XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); - if (error) - goto error_return; - flags |= XFS_OQUOTA_CHKD; - } - - do { - /* - * Iterate thru all the inodes in the file system, - * adjusting the corresponding dquot counters in core. - */ - error = xfs_bulkstat(mp, &lastino, &count, - xfs_qm_dqusage_adjust, - structsz, NULL, &done); - if (error) - break; - - } while (!done); - - /* - * We've made all the changes that we need to make incore. - * Flush them down to disk buffers if everything was updated - * successfully. - */ - if (!error) - error = xfs_qm_dqflush_all(mp, 0); - - /* - * We can get this error if we couldn't do a dquot allocation inside - * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the - * dirty dquots that might be cached, we just want to get rid of them - * and turn quotaoff. The dquots won't be attached to any of the inodes - * at this point (because we intentionally didn't in dqget_noattach). - */ - if (error) { - xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); - goto error_return; - } - - /* - * We didn't log anything, because if we crashed, we'll have to - * start the quotacheck from scratch anyway. However, we must make - * sure that our dquot changes are secure before we put the - * quotacheck'd stamp on the superblock. So, here we do a synchronous - * flush. - */ - XFS_bflush(mp->m_ddev_targp); - - /* - * If one type of quotas is off, then it will lose its - * quotachecked status, since we won't be doing accounting for - * that type anymore. - */ - mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); - mp->m_qflags |= flags; - - error_return: - if (error) { - xfs_warn(mp, - "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", - error); - /* - * We must turn off quotas. - */ - ASSERT(mp->m_quotainfo != NULL); - ASSERT(xfs_Gqm != NULL); - xfs_qm_destroy_quotainfo(mp); - if (xfs_mount_reset_sbqflags(mp)) { - xfs_warn(mp, - "Quotacheck: Failed to reset quota flags."); - } - } else - xfs_notice(mp, "Quotacheck: Done."); - return (error); -} - -/* - * This is called after the superblock has been read in and we're ready to - * iget the quota inodes. - */ -STATIC int -xfs_qm_init_quotainos( - xfs_mount_t *mp) -{ - xfs_inode_t *uip, *gip; - int error; - __int64_t sbflags; - uint flags; - - ASSERT(mp->m_quotainfo); - uip = gip = NULL; - sbflags = 0; - flags = 0; - - /* - * Get the uquota and gquota inodes - */ - if (xfs_sb_version_hasquota(&mp->m_sb)) { - if (XFS_IS_UQUOTA_ON(mp) && - mp->m_sb.sb_uquotino != NULLFSINO) { - ASSERT(mp->m_sb.sb_uquotino > 0); - if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, - 0, 0, &uip))) - return XFS_ERROR(error); - } - if (XFS_IS_OQUOTA_ON(mp) && - mp->m_sb.sb_gquotino != NULLFSINO) { - ASSERT(mp->m_sb.sb_gquotino > 0); - if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, - 0, 0, &gip))) { - if (uip) - IRELE(uip); - return XFS_ERROR(error); - } - } - } else { - flags |= XFS_QMOPT_SBVERSION; - sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS); - } - - /* - * Create the two inodes, if they don't exist already. The changes - * made above will get added to a transaction and logged in one of - * the qino_alloc calls below. If the device is readonly, - * temporarily switch to read-write to do this. - */ - if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { - if ((error = xfs_qm_qino_alloc(mp, &uip, - sbflags | XFS_SB_UQUOTINO, - flags | XFS_QMOPT_UQUOTA))) - return XFS_ERROR(error); - - flags &= ~XFS_QMOPT_SBVERSION; - } - if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { - flags |= (XFS_IS_GQUOTA_ON(mp) ? - XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); - error = xfs_qm_qino_alloc(mp, &gip, - sbflags | XFS_SB_GQUOTINO, flags); - if (error) { - if (uip) - IRELE(uip); - - return XFS_ERROR(error); - } - } - - mp->m_quotainfo->qi_uquotaip = uip; - mp->m_quotainfo->qi_gquotaip = gip; - - return 0; -} - - - -/* - * Just pop the least recently used dquot off the freelist and - * recycle it. The returned dquot is locked. - */ -STATIC xfs_dquot_t * -xfs_qm_dqreclaim_one(void) -{ - xfs_dquot_t *dqpout; - xfs_dquot_t *dqp; - int restarts; - int startagain; - - restarts = 0; - dqpout = NULL; - - /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ -again: - startagain = 0; - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - - list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { - struct xfs_mount *mp = dqp->q_mount; - xfs_dqlock(dqp); - - /* - * We are racing with dqlookup here. Naturally we don't - * want to reclaim a dquot that lookup wants. We release the - * freelist lock and start over, so that lookup will grab - * both the dquot and the freelistlock. - */ - if (dqp->dq_flags & XFS_DQ_WANT) { - ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); - - trace_xfs_dqreclaim_want(dqp); - XQM_STATS_INC(xqmstats.xs_qm_dqwants); - restarts++; - startagain = 1; - goto dqunlock; - } - - /* - * If the dquot is inactive, we are assured that it is - * not on the mplist or the hashlist, and that makes our - * life easier. - */ - if (dqp->dq_flags & XFS_DQ_INACTIVE) { - ASSERT(mp == NULL); - ASSERT(! XFS_DQ_IS_DIRTY(dqp)); - ASSERT(list_empty(&dqp->q_hashlist)); - ASSERT(list_empty(&dqp->q_mplist)); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - dqpout = dqp; - XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); - goto dqunlock; - } - - ASSERT(dqp->q_hash); - ASSERT(!list_empty(&dqp->q_mplist)); - - /* - * Try to grab the flush lock. If this dquot is in the process - * of getting flushed to disk, we don't want to reclaim it. - */ - if (!xfs_dqflock_nowait(dqp)) - goto dqunlock; - - /* - * We have the flush lock so we know that this is not in the - * process of being flushed. So, if this is dirty, flush it - * DELWRI so that we don't get a freelist infested with - * dirty dquots. - */ - if (XFS_DQ_IS_DIRTY(dqp)) { - int error; - - trace_xfs_dqreclaim_dirty(dqp); - - /* - * We flush it delayed write, so don't bother - * releasing the freelist lock. - */ - error = xfs_qm_dqflush(dqp, 0); - if (error) { - xfs_warn(mp, "%s: dquot %p flush failed", - __func__, dqp); - } - goto dqunlock; - } - - /* - * We're trying to get the hashlock out of order. This races - * with dqlookup; so, we giveup and goto the next dquot if - * we couldn't get the hashlock. This way, we won't starve - * a dqlookup process that holds the hashlock that is - * waiting for the freelist lock. - */ - if (!mutex_trylock(&dqp->q_hash->qh_lock)) { - restarts++; - goto dqfunlock; - } - - /* - * This races with dquot allocation code as well as dqflush_all - * and reclaim code. So, if we failed to grab the mplist lock, - * giveup everything and start over. - */ - if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { - restarts++; - startagain = 1; - goto qhunlock; - } - - ASSERT(dqp->q_nrefs == 0); - list_del_init(&dqp->q_mplist); - mp->m_quotainfo->qi_dquots--; - mp->m_quotainfo->qi_dqreclaims++; - list_del_init(&dqp->q_hashlist); - dqp->q_hash->qh_version++; - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - dqpout = dqp; - mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); -qhunlock: - mutex_unlock(&dqp->q_hash->qh_lock); -dqfunlock: - xfs_dqfunlock(dqp); -dqunlock: - xfs_dqunlock(dqp); - if (dqpout) - break; - if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) - break; - if (startagain) { - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - goto again; - } - } - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - return dqpout; -} - -/* - * Traverse the freelist of dquots and attempt to reclaim a maximum of - * 'howmany' dquots. This operation races with dqlookup(), and attempts to - * favor the lookup function ... - */ -STATIC int -xfs_qm_shake_freelist( - int howmany) -{ - int nreclaimed = 0; - xfs_dquot_t *dqp; - - if (howmany <= 0) - return 0; - - while (nreclaimed < howmany) { - dqp = xfs_qm_dqreclaim_one(); - if (!dqp) - return nreclaimed; - xfs_qm_dqdestroy(dqp); - nreclaimed++; - } - return nreclaimed; -} - -/* - * The kmem_shake interface is invoked when memory is running low. - */ -/* ARGSUSED */ -STATIC int -xfs_qm_shake( - struct shrinker *shrink, - struct shrink_control *sc) -{ - int ndqused, nfree, n; - gfp_t gfp_mask = sc->gfp_mask; - - if (!kmem_shake_allow(gfp_mask)) - return 0; - if (!xfs_Gqm) - return 0; - - nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ - /* incore dquots in all f/s's */ - ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; - - ASSERT(ndqused >= 0); - - if (nfree <= ndqused && nfree < ndquot) - return 0; - - ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ - n = nfree - ndqused - ndquot; /* # over target */ - - return xfs_qm_shake_freelist(MAX(nfree, n)); -} - - -/*------------------------------------------------------------------*/ - -/* - * Return a new incore dquot. Depending on the number of - * dquots in the system, we either allocate a new one on the kernel heap, - * or reclaim a free one. - * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed - * to reclaim an existing one from the freelist. - */ -boolean_t -xfs_qm_dqalloc_incore( - xfs_dquot_t **O_dqpp) -{ - xfs_dquot_t *dqp; - - /* - * Check against high water mark to see if we want to pop - * a nincompoop dquot off the freelist. - */ - if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { - /* - * Try to recycle a dquot from the freelist. - */ - if ((dqp = xfs_qm_dqreclaim_one())) { - XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); - /* - * Just zero the core here. The rest will get - * reinitialized by caller. XXX we shouldn't even - * do this zero ... - */ - memset(&dqp->q_core, 0, sizeof(dqp->q_core)); - *O_dqpp = dqp; - return B_FALSE; - } - XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); - } - - /* - * Allocate a brand new dquot on the kernel heap and return it - * to the caller to initialize. - */ - ASSERT(xfs_Gqm->qm_dqzone != NULL); - *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); - atomic_inc(&xfs_Gqm->qm_totaldquots); - - return B_TRUE; -} - - -/* - * Start a transaction and write the incore superblock changes to - * disk. flags parameter indicates which fields have changed. - */ -int -xfs_qm_write_sb_changes( - xfs_mount_t *mp, - __int64_t flags) -{ - xfs_trans_t *tp; - int error; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); - if ((error = xfs_trans_reserve(tp, 0, - mp->m_sb.sb_sectsize + 128, 0, - 0, - XFS_DEFAULT_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return error; - } - - xfs_mod_sb(tp, flags); - error = xfs_trans_commit(tp, 0); - - return error; -} - - -/* --------------- utility functions for vnodeops ---------------- */ - - -/* - * Given an inode, a uid, gid and prid make sure that we have - * allocated relevant dquot(s) on disk, and that we won't exceed inode - * quotas by creating this file. - * This also attaches dquot(s) to the given inode after locking it, - * and returns the dquots corresponding to the uid and/or gid. - * - * in : inode (unlocked) - * out : udquot, gdquot with references taken and unlocked - */ -int -xfs_qm_vop_dqalloc( - struct xfs_inode *ip, - uid_t uid, - gid_t gid, - prid_t prid, - uint flags, - struct xfs_dquot **O_udqpp, - struct xfs_dquot **O_gdqpp) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_dquot *uq, *gq; - int error; - uint lockflags; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - lockflags = XFS_ILOCK_EXCL; - xfs_ilock(ip, lockflags); - - if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) - gid = ip->i_d.di_gid; - - /* - * Attach the dquot(s) to this inode, doing a dquot allocation - * if necessary. The dquot(s) will not be locked. - */ - if (XFS_NOT_DQATTACHED(mp, ip)) { - error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); - if (error) { - xfs_iunlock(ip, lockflags); - return error; - } - } - - uq = gq = NULL; - if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { - if (ip->i_d.di_uid != uid) { - /* - * What we need is the dquot that has this uid, and - * if we send the inode to dqget, the uid of the inode - * takes priority over what's sent in the uid argument. - * We must unlock inode here before calling dqget if - * we're not sending the inode, because otherwise - * we'll deadlock by doing trans_reserve while - * holding ilock. - */ - xfs_iunlock(ip, lockflags); - if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, - XFS_DQ_USER, - XFS_QMOPT_DQALLOC | - XFS_QMOPT_DOWARN, - &uq))) { - ASSERT(error != ENOENT); - return error; - } - /* - * Get the ilock in the right order. - */ - xfs_dqunlock(uq); - lockflags = XFS_ILOCK_SHARED; - xfs_ilock(ip, lockflags); - } else { - /* - * Take an extra reference, because we'll return - * this to caller - */ - ASSERT(ip->i_udquot); - uq = ip->i_udquot; - xfs_dqlock(uq); - XFS_DQHOLD(uq); - xfs_dqunlock(uq); - } - } - if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { - if (ip->i_d.di_gid != gid) { - xfs_iunlock(ip, lockflags); - if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, - XFS_DQ_GROUP, - XFS_QMOPT_DQALLOC | - XFS_QMOPT_DOWARN, - &gq))) { - if (uq) - xfs_qm_dqrele(uq); - ASSERT(error != ENOENT); - return error; - } - xfs_dqunlock(gq); - lockflags = XFS_ILOCK_SHARED; - xfs_ilock(ip, lockflags); - } else { - ASSERT(ip->i_gdquot); - gq = ip->i_gdquot; - xfs_dqlock(gq); - XFS_DQHOLD(gq); - xfs_dqunlock(gq); - } - } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { - if (xfs_get_projid(ip) != prid) { - xfs_iunlock(ip, lockflags); - if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, - XFS_DQ_PROJ, - XFS_QMOPT_DQALLOC | - XFS_QMOPT_DOWARN, - &gq))) { - if (uq) - xfs_qm_dqrele(uq); - ASSERT(error != ENOENT); - return (error); - } - xfs_dqunlock(gq); - lockflags = XFS_ILOCK_SHARED; - xfs_ilock(ip, lockflags); - } else { - ASSERT(ip->i_gdquot); - gq = ip->i_gdquot; - xfs_dqlock(gq); - XFS_DQHOLD(gq); - xfs_dqunlock(gq); - } - } - if (uq) - trace_xfs_dquot_dqalloc(ip); - - xfs_iunlock(ip, lockflags); - if (O_udqpp) - *O_udqpp = uq; - else if (uq) - xfs_qm_dqrele(uq); - if (O_gdqpp) - *O_gdqpp = gq; - else if (gq) - xfs_qm_dqrele(gq); - return 0; -} - -/* - * Actually transfer ownership, and do dquot modifications. - * These were already reserved. - */ -xfs_dquot_t * -xfs_qm_vop_chown( - xfs_trans_t *tp, - xfs_inode_t *ip, - xfs_dquot_t **IO_olddq, - xfs_dquot_t *newdq) -{ - xfs_dquot_t *prevdq; - uint bfield = XFS_IS_REALTIME_INODE(ip) ? - XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; - - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); - - /* old dquot */ - prevdq = *IO_olddq; - ASSERT(prevdq); - ASSERT(prevdq != newdq); - - xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); - xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); - - /* the sparkling new dquot */ - xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); - xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); - - /* - * Take an extra reference, because the inode - * is going to keep this dquot pointer even - * after the trans_commit. - */ - xfs_dqlock(newdq); - XFS_DQHOLD(newdq); - xfs_dqunlock(newdq); - *IO_olddq = newdq; - - return prevdq; -} - -/* - * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). - */ -int -xfs_qm_vop_chown_reserve( - xfs_trans_t *tp, - xfs_inode_t *ip, - xfs_dquot_t *udqp, - xfs_dquot_t *gdqp, - uint flags) -{ - xfs_mount_t *mp = ip->i_mount; - uint delblks, blkflags, prjflags = 0; - xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; - int error; - - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - delblks = ip->i_delayed_blks; - delblksudq = delblksgdq = unresudq = unresgdq = NULL; - blkflags = XFS_IS_REALTIME_INODE(ip) ? - XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; - - if (XFS_IS_UQUOTA_ON(mp) && udqp && - ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { - delblksudq = udqp; - /* - * If there are delayed allocation blocks, then we have to - * unreserve those from the old dquot, and add them to the - * new dquot. - */ - if (delblks) { - ASSERT(ip->i_udquot); - unresudq = ip->i_udquot; - } - } - if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { - if (XFS_IS_PQUOTA_ON(ip->i_mount) && - xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) - prjflags = XFS_QMOPT_ENOSPC; - - if (prjflags || - (XFS_IS_GQUOTA_ON(ip->i_mount) && - ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { - delblksgdq = gdqp; - if (delblks) { - ASSERT(ip->i_gdquot); - unresgdq = ip->i_gdquot; - } - } - } - - if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, - delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, - flags | blkflags | prjflags))) - return (error); - - /* - * Do the delayed blks reservations/unreservations now. Since, these - * are done without the help of a transaction, if a reservation fails - * its previous reservations won't be automatically undone by trans - * code. So, we have to do it manually here. - */ - if (delblks) { - /* - * Do the reservations first. Unreservation can't fail. - */ - ASSERT(delblksudq || delblksgdq); - ASSERT(unresudq || unresgdq); - if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, - delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, - flags | blkflags | prjflags))) - return (error); - xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, - unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, - blkflags); - } - - return (0); -} - -int -xfs_qm_vop_rename_dqattach( - struct xfs_inode **i_tab) -{ - struct xfs_mount *mp = i_tab[0]->i_mount; - int i; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - for (i = 0; (i < 4 && i_tab[i]); i++) { - struct xfs_inode *ip = i_tab[i]; - int error; - - /* - * Watch out for duplicate entries in the table. - */ - if (i == 0 || ip != i_tab[i-1]) { - if (XFS_NOT_DQATTACHED(mp, ip)) { - error = xfs_qm_dqattach(ip, 0); - if (error) - return error; - } - } - } - return 0; -} - -void -xfs_qm_vop_create_dqattach( - struct xfs_trans *tp, - struct xfs_inode *ip, - struct xfs_dquot *udqp, - struct xfs_dquot *gdqp) -{ - struct xfs_mount *mp = tp->t_mountp; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - if (udqp) { - xfs_dqlock(udqp); - XFS_DQHOLD(udqp); - xfs_dqunlock(udqp); - ASSERT(ip->i_udquot == NULL); - ip->i_udquot = udqp; - ASSERT(XFS_IS_UQUOTA_ON(mp)); - ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); - xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); - } - if (gdqp) { - xfs_dqlock(gdqp); - XFS_DQHOLD(gdqp); - xfs_dqunlock(gdqp); - ASSERT(ip->i_gdquot == NULL); - ip->i_gdquot = gdqp; - ASSERT(XFS_IS_OQUOTA_ON(mp)); - ASSERT((XFS_IS_GQUOTA_ON(mp) ? - ip->i_d.di_gid : xfs_get_projid(ip)) == - be32_to_cpu(gdqp->q_core.d_id)); - xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); - } -} - diff --git a/fs/xfs/quota/xfs_qm.h b/fs/xfs/quota/xfs_qm.h deleted file mode 100644 index 43b9abe1052c..000000000000 --- a/fs/xfs/quota/xfs_qm.h +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_QM_H__ -#define __XFS_QM_H__ - -#include "xfs_dquot_item.h" -#include "xfs_dquot.h" -#include "xfs_quota_priv.h" -#include "xfs_qm_stats.h" - -struct xfs_qm; -struct xfs_inode; - -extern uint ndquot; -extern struct mutex xfs_Gqm_lock; -extern struct xfs_qm *xfs_Gqm; -extern kmem_zone_t *qm_dqzone; -extern kmem_zone_t *qm_dqtrxzone; - -/* - * Used in xfs_qm_sync called by xfs_sync to count the max times that it can - * iterate over the mountpt's dquot list in one call. - */ -#define XFS_QM_SYNC_MAX_RESTARTS 7 - -/* - * Ditto, for xfs_qm_dqreclaim_one. - */ -#define XFS_QM_RECLAIM_MAX_RESTARTS 4 - -/* - * Ideal ratio of free to in use dquots. Quota manager makes an attempt - * to keep this balance. - */ -#define XFS_QM_DQFREE_RATIO 2 - -/* - * Dquot hashtable constants/threshold values. - */ -#define XFS_QM_HASHSIZE_LOW (PAGE_SIZE / sizeof(xfs_dqhash_t)) -#define XFS_QM_HASHSIZE_HIGH ((PAGE_SIZE * 4) / sizeof(xfs_dqhash_t)) - -/* - * This defines the unit of allocation of dquots. - * Currently, it is just one file system block, and a 4K blk contains 30 - * (136 * 30 = 4080) dquots. It's probably not worth trying to make - * this more dynamic. - * XXXsup However, if this number is changed, we have to make sure that we don't - * implicitly assume that we do allocations in chunks of a single filesystem - * block in the dquot/xqm code. - */ -#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 - -typedef xfs_dqhash_t xfs_dqlist_t; - -/* - * Quota Manager (global) structure. Lives only in core. - */ -typedef struct xfs_qm { - xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */ - xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */ - uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */ - struct list_head qm_dqfrlist; /* freelist of dquots */ - struct mutex qm_dqfrlist_lock; - int qm_dqfrlist_cnt; - atomic_t qm_totaldquots; /* total incore dquots */ - uint qm_nrefs; /* file systems with quota on */ - int qm_dqfree_ratio;/* ratio of free to inuse dquots */ - kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */ - kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */ -} xfs_qm_t; - -/* - * Various quota information for individual filesystems. - * The mount structure keeps a pointer to this. - */ -typedef struct xfs_quotainfo { - xfs_inode_t *qi_uquotaip; /* user quota inode */ - xfs_inode_t *qi_gquotaip; /* group quota inode */ - struct list_head qi_dqlist; /* all dquots in filesys */ - struct mutex qi_dqlist_lock; - int qi_dquots; - int qi_dqreclaims; /* a change here indicates - a removal in the dqlist */ - time_t qi_btimelimit; /* limit for blks timer */ - time_t qi_itimelimit; /* limit for inodes timer */ - time_t qi_rtbtimelimit;/* limit for rt blks timer */ - xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ - xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ - xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ - struct mutex qi_quotaofflock;/* to serialize quotaoff */ - xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ - uint qi_dqperchunk; /* # ondisk dqs in above chunk */ - xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ - xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ - xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ - xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ - xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ - xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ -} xfs_quotainfo_t; - - -extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); -extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, - xfs_dquot_t *, xfs_dquot_t *, long, long, uint); -extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); -extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *); - -/* - * We keep the usr and grp dquots separately so that locking will be easier - * to do at commit time. All transactions that we know of at this point - * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. - */ -#define XFS_QM_TRANS_MAXDQS 2 -typedef struct xfs_dquot_acct { - xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS]; - xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS]; -} xfs_dquot_acct_t; - -/* - * Users are allowed to have a usage exceeding their softlimit for - * a period this long. - */ -#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ -#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ -#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ - -#define XFS_QM_BWARNLIMIT 5 -#define XFS_QM_IWARNLIMIT 5 -#define XFS_QM_RTBWARNLIMIT 5 - -extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); -extern int xfs_qm_quotacheck(xfs_mount_t *); -extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); - -/* dquot stuff */ -extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **); -extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint); -extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); - -/* quota ops */ -extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint); -extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint, - fs_disk_quota_t *); -extern int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint, - fs_disk_quota_t *); -extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *); -extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint); -extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint); - -#endif /* __XFS_QM_H__ */ diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c deleted file mode 100644 index a0a829addca9..000000000000 --- a/fs/xfs/quota/xfs_qm_bhv.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_qm.h" - - -STATIC void -xfs_fill_statvfs_from_dquot( - struct kstatfs *statp, - xfs_disk_dquot_t *dp) -{ - __uint64_t limit; - - limit = dp->d_blk_softlimit ? - be64_to_cpu(dp->d_blk_softlimit) : - be64_to_cpu(dp->d_blk_hardlimit); - if (limit && statp->f_blocks > limit) { - statp->f_blocks = limit; - statp->f_bfree = statp->f_bavail = - (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ? - (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0; - } - - limit = dp->d_ino_softlimit ? - be64_to_cpu(dp->d_ino_softlimit) : - be64_to_cpu(dp->d_ino_hardlimit); - if (limit && statp->f_files > limit) { - statp->f_files = limit; - statp->f_ffree = - (statp->f_files > be64_to_cpu(dp->d_icount)) ? - (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0; - } -} - - -/* - * Directory tree accounting is implemented using project quotas, where - * the project identifier is inherited from parent directories. - * A statvfs (df, etc.) of a directory that is using project quota should - * return a statvfs of the project, not the entire filesystem. - * This makes such trees appear as if they are filesystems in themselves. - */ -void -xfs_qm_statvfs( - xfs_inode_t *ip, - struct kstatfs *statp) -{ - xfs_mount_t *mp = ip->i_mount; - xfs_dquot_t *dqp; - - if (!xfs_qm_dqget(mp, NULL, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) { - xfs_fill_statvfs_from_dquot(statp, &dqp->q_core); - xfs_qm_dqput(dqp); - } -} - -int -xfs_qm_newmount( - xfs_mount_t *mp, - uint *needquotamount, - uint *quotaflags) -{ - uint quotaondisk; - uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0; - - quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) && - (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT); - - if (quotaondisk) { - uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT; - pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT; - gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT; - } - - /* - * If the device itself is read-only, we can't allow - * the user to change the state of quota on the mount - - * this would generate a transaction on the ro device, - * which would lead to an I/O error and shutdown - */ - - if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) || - (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) || - (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) || - (!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) || - (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) || - (!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) && - xfs_dev_is_read_only(mp, "changing quota state")) { - xfs_warn(mp, "please mount with%s%s%s%s.", - (!quotaondisk ? "out quota" : ""), - (uquotaondisk ? " usrquota" : ""), - (pquotaondisk ? " prjquota" : ""), - (gquotaondisk ? " grpquota" : "")); - return XFS_ERROR(EPERM); - } - - if (XFS_IS_QUOTA_ON(mp) || quotaondisk) { - /* - * Call mount_quotas at this point only if we won't have to do - * a quotacheck. - */ - if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) { - /* - * If an error occurred, qm_mount_quotas code - * has already disabled quotas. So, just finish - * mounting, and get on with the boring life - * without disk quotas. - */ - xfs_qm_mount_quotas(mp); - } else { - /* - * Clear the quota flags, but remember them. This - * is so that the quota code doesn't get invoked - * before we're ready. This can happen when an - * inode goes inactive and wants to free blocks, - * or via xfs_log_mount_finish. - */ - *needquotamount = B_TRUE; - *quotaflags = mp->m_qflags; - mp->m_qflags = 0; - } - } - - return 0; -} - -void __init -xfs_qm_init(void) -{ - printk(KERN_INFO "SGI XFS Quota Management subsystem\n"); - mutex_init(&xfs_Gqm_lock); - xfs_qm_init_procfs(); -} - -void __exit -xfs_qm_exit(void) -{ - xfs_qm_cleanup_procfs(); - if (qm_dqzone) - kmem_zone_destroy(qm_dqzone); - if (qm_dqtrxzone) - kmem_zone_destroy(qm_dqtrxzone); -} diff --git a/fs/xfs/quota/xfs_qm_stats.c b/fs/xfs/quota/xfs_qm_stats.c deleted file mode 100644 index 8671a0b32644..000000000000 --- a/fs/xfs/quota/xfs_qm_stats.c +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_qm.h" - -struct xqmstats xqmstats; - -static int xqm_proc_show(struct seq_file *m, void *v) -{ - /* maximum; incore; ratio free to inuse; freelist */ - seq_printf(m, "%d\t%d\t%d\t%u\n", - ndquot, - xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0, - xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0, - xfs_Gqm? xfs_Gqm->qm_dqfrlist_cnt : 0); - return 0; -} - -static int xqm_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, xqm_proc_show, NULL); -} - -static const struct file_operations xqm_proc_fops = { - .owner = THIS_MODULE, - .open = xqm_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int xqmstat_proc_show(struct seq_file *m, void *v) -{ - /* quota performance statistics */ - seq_printf(m, "qm %u %u %u %u %u %u %u %u\n", - xqmstats.xs_qm_dqreclaims, - xqmstats.xs_qm_dqreclaim_misses, - xqmstats.xs_qm_dquot_dups, - xqmstats.xs_qm_dqcachemisses, - xqmstats.xs_qm_dqcachehits, - xqmstats.xs_qm_dqwants, - xqmstats.xs_qm_dqshake_reclaims, - xqmstats.xs_qm_dqinact_reclaims); - return 0; -} - -static int xqmstat_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, xqmstat_proc_show, NULL); -} - -static const struct file_operations xqmstat_proc_fops = { - .owner = THIS_MODULE, - .open = xqmstat_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -void -xfs_qm_init_procfs(void) -{ - proc_create("fs/xfs/xqmstat", 0, NULL, &xqmstat_proc_fops); - proc_create("fs/xfs/xqm", 0, NULL, &xqm_proc_fops); -} - -void -xfs_qm_cleanup_procfs(void) -{ - remove_proc_entry("fs/xfs/xqm", NULL); - remove_proc_entry("fs/xfs/xqmstat", NULL); -} diff --git a/fs/xfs/quota/xfs_qm_stats.h b/fs/xfs/quota/xfs_qm_stats.h deleted file mode 100644 index 5b964fc0dc09..000000000000 --- a/fs/xfs/quota/xfs_qm_stats.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (c) 2002 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_QM_STATS_H__ -#define __XFS_QM_STATS_H__ - -#if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF) - -/* - * XQM global statistics - */ -struct xqmstats { - __uint32_t xs_qm_dqreclaims; - __uint32_t xs_qm_dqreclaim_misses; - __uint32_t xs_qm_dquot_dups; - __uint32_t xs_qm_dqcachemisses; - __uint32_t xs_qm_dqcachehits; - __uint32_t xs_qm_dqwants; - __uint32_t xs_qm_dqshake_reclaims; - __uint32_t xs_qm_dqinact_reclaims; -}; - -extern struct xqmstats xqmstats; - -# define XQM_STATS_INC(count) ( (count)++ ) - -extern void xfs_qm_init_procfs(void); -extern void xfs_qm_cleanup_procfs(void); - -#else - -# define XQM_STATS_INC(count) do { } while (0) - -static inline void xfs_qm_init_procfs(void) { }; -static inline void xfs_qm_cleanup_procfs(void) { }; - -#endif - -#endif /* __XFS_QM_STATS_H__ */ diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c deleted file mode 100644 index 609246f42e6c..000000000000 --- a/fs/xfs/quota/xfs_qm_syscalls.c +++ /dev/null @@ -1,906 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include - -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_qm.h" -#include "xfs_trace.h" - -STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint); -STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *, - uint); -STATIC uint xfs_qm_export_flags(uint); -STATIC uint xfs_qm_export_qtype_flags(uint); -STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *, - fs_disk_quota_t *); - - -/* - * Turn off quota accounting and/or enforcement for all udquots and/or - * gdquots. Called only at unmount time. - * - * This assumes that there are no dquots of this file system cached - * incore, and modifies the ondisk dquot directly. Therefore, for example, - * it is an error to call this twice, without purging the cache. - */ -int -xfs_qm_scall_quotaoff( - xfs_mount_t *mp, - uint flags) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - uint dqtype; - int error; - uint inactivate_flags; - xfs_qoff_logitem_t *qoffstart; - int nculprits; - - /* - * No file system can have quotas enabled on disk but not in core. - * Note that quota utilities (like quotaoff) _expect_ - * errno == EEXIST here. - */ - if ((mp->m_qflags & flags) == 0) - return XFS_ERROR(EEXIST); - error = 0; - - flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); - - /* - * We don't want to deal with two quotaoffs messing up each other, - * so we're going to serialize it. quotaoff isn't exactly a performance - * critical thing. - * If quotaoff, then we must be dealing with the root filesystem. - */ - ASSERT(q); - mutex_lock(&q->qi_quotaofflock); - - /* - * If we're just turning off quota enforcement, change mp and go. - */ - if ((flags & XFS_ALL_QUOTA_ACCT) == 0) { - mp->m_qflags &= ~(flags); - - spin_lock(&mp->m_sb_lock); - mp->m_sb.sb_qflags = mp->m_qflags; - spin_unlock(&mp->m_sb_lock); - mutex_unlock(&q->qi_quotaofflock); - - /* XXX what to do if error ? Revert back to old vals incore ? */ - error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS); - return (error); - } - - dqtype = 0; - inactivate_flags = 0; - /* - * If accounting is off, we must turn enforcement off, clear the - * quota 'CHKD' certificate to make it known that we have to - * do a quotacheck the next time this quota is turned on. - */ - if (flags & XFS_UQUOTA_ACCT) { - dqtype |= XFS_QMOPT_UQUOTA; - flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD); - inactivate_flags |= XFS_UQUOTA_ACTIVE; - } - if (flags & XFS_GQUOTA_ACCT) { - dqtype |= XFS_QMOPT_GQUOTA; - flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); - inactivate_flags |= XFS_GQUOTA_ACTIVE; - } else if (flags & XFS_PQUOTA_ACCT) { - dqtype |= XFS_QMOPT_PQUOTA; - flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); - inactivate_flags |= XFS_PQUOTA_ACTIVE; - } - - /* - * Nothing to do? Don't complain. This happens when we're just - * turning off quota enforcement. - */ - if ((mp->m_qflags & flags) == 0) - goto out_unlock; - - /* - * Write the LI_QUOTAOFF log record, and do SB changes atomically, - * and synchronously. If we fail to write, we should abort the - * operation as it cannot be recovered safely if we crash. - */ - error = xfs_qm_log_quotaoff(mp, &qoffstart, flags); - if (error) - goto out_unlock; - - /* - * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct - * to take care of the race between dqget and quotaoff. We don't take - * any special locks to reset these bits. All processes need to check - * these bits *after* taking inode lock(s) to see if the particular - * quota type is in the process of being turned off. If *ACTIVE, it is - * guaranteed that all dquot structures and all quotainode ptrs will all - * stay valid as long as that inode is kept locked. - * - * There is no turning back after this. - */ - mp->m_qflags &= ~inactivate_flags; - - /* - * Give back all the dquot reference(s) held by inodes. - * Here we go thru every single incore inode in this file system, and - * do a dqrele on the i_udquot/i_gdquot that it may have. - * Essentially, as long as somebody has an inode locked, this guarantees - * that quotas will not be turned off. This is handy because in a - * transaction once we lock the inode(s) and check for quotaon, we can - * depend on the quota inodes (and other things) being valid as long as - * we keep the lock(s). - */ - xfs_qm_dqrele_all_inodes(mp, flags); - - /* - * Next we make the changes in the quota flag in the mount struct. - * This isn't protected by a particular lock directly, because we - * don't want to take a mrlock every time we depend on quotas being on. - */ - mp->m_qflags &= ~(flags); - - /* - * Go through all the dquots of this file system and purge them, - * according to what was turned off. We may not be able to get rid - * of all dquots, because dquots can have temporary references that - * are not attached to inodes. eg. xfs_setattr, xfs_create. - * So, if we couldn't purge all the dquots from the filesystem, - * we can't get rid of the incore data structures. - */ - while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype))) - delay(10 * nculprits); - - /* - * Transactions that had started before ACTIVE state bit was cleared - * could have logged many dquots, so they'd have higher LSNs than - * the first QUOTAOFF log record does. If we happen to crash when - * the tail of the log has gone past the QUOTAOFF record, but - * before the last dquot modification, those dquots __will__ - * recover, and that's not good. - * - * So, we have QUOTAOFF start and end logitems; the start - * logitem won't get overwritten until the end logitem appears... - */ - error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags); - if (error) { - /* We're screwed now. Shutdown is the only option. */ - xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); - goto out_unlock; - } - - /* - * If quotas is completely disabled, close shop. - */ - if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) || - ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) { - mutex_unlock(&q->qi_quotaofflock); - xfs_qm_destroy_quotainfo(mp); - return (0); - } - - /* - * Release our quotainode references if we don't need them anymore. - */ - if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) { - IRELE(q->qi_uquotaip); - q->qi_uquotaip = NULL; - } - if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && q->qi_gquotaip) { - IRELE(q->qi_gquotaip); - q->qi_gquotaip = NULL; - } - -out_unlock: - mutex_unlock(&q->qi_quotaofflock); - return error; -} - -STATIC int -xfs_qm_scall_trunc_qfile( - struct xfs_mount *mp, - xfs_ino_t ino) -{ - struct xfs_inode *ip; - struct xfs_trans *tp; - int error; - - if (ino == NULLFSINO) - return 0; - - error = xfs_iget(mp, NULL, ino, 0, 0, &ip); - if (error) - return error; - - xfs_ilock(ip, XFS_IOLOCK_EXCL); - - tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE); - error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); - if (error) { - xfs_trans_cancel(tp, 0); - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - goto out_put; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip); - - error = xfs_itruncate_data(&tp, ip, 0); - if (error) { - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT); - goto out_unlock; - } - - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - -out_unlock: - xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); -out_put: - IRELE(ip); - return error; -} - -int -xfs_qm_scall_trunc_qfiles( - xfs_mount_t *mp, - uint flags) -{ - int error = 0, error2 = 0; - - if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) { - xfs_debug(mp, "%s: flags=%x m_qflags=%x\n", - __func__, flags, mp->m_qflags); - return XFS_ERROR(EINVAL); - } - - if (flags & XFS_DQ_USER) - error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino); - if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) - error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino); - - return error ? error : error2; -} - -/* - * Switch on (a given) quota enforcement for a filesystem. This takes - * effect immediately. - * (Switching on quota accounting must be done at mount time.) - */ -int -xfs_qm_scall_quotaon( - xfs_mount_t *mp, - uint flags) -{ - int error; - uint qf; - __int64_t sbflags; - - flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); - /* - * Switching on quota accounting must be done at mount time. - */ - flags &= ~(XFS_ALL_QUOTA_ACCT); - - sbflags = 0; - - if (flags == 0) { - xfs_debug(mp, "%s: zero flags, m_qflags=%x\n", - __func__, mp->m_qflags); - return XFS_ERROR(EINVAL); - } - - /* No fs can turn on quotas with a delayed effect */ - ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0); - - /* - * Can't enforce without accounting. We check the superblock - * qflags here instead of m_qflags because rootfs can have - * quota acct on ondisk without m_qflags' knowing. - */ - if (((flags & XFS_UQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 && - (flags & XFS_UQUOTA_ENFD)) - || - ((flags & XFS_PQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 && - (flags & XFS_GQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 && - (flags & XFS_OQUOTA_ENFD))) { - xfs_debug(mp, - "%s: Can't enforce without acct, flags=%x sbflags=%x\n", - __func__, flags, mp->m_sb.sb_qflags); - return XFS_ERROR(EINVAL); - } - /* - * If everything's up to-date incore, then don't waste time. - */ - if ((mp->m_qflags & flags) == flags) - return XFS_ERROR(EEXIST); - - /* - * Change sb_qflags on disk but not incore mp->qflags - * if this is the root filesystem. - */ - spin_lock(&mp->m_sb_lock); - qf = mp->m_sb.sb_qflags; - mp->m_sb.sb_qflags = qf | flags; - spin_unlock(&mp->m_sb_lock); - - /* - * There's nothing to change if it's the same. - */ - if ((qf & flags) == flags && sbflags == 0) - return XFS_ERROR(EEXIST); - sbflags |= XFS_SB_QFLAGS; - - if ((error = xfs_qm_write_sb_changes(mp, sbflags))) - return (error); - /* - * If we aren't trying to switch on quota enforcement, we are done. - */ - if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) != - (mp->m_qflags & XFS_UQUOTA_ACCT)) || - ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) != - (mp->m_qflags & XFS_PQUOTA_ACCT)) || - ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) != - (mp->m_qflags & XFS_GQUOTA_ACCT)) || - (flags & XFS_ALL_QUOTA_ENFD) == 0) - return (0); - - if (! XFS_IS_QUOTA_RUNNING(mp)) - return XFS_ERROR(ESRCH); - - /* - * Switch on quota enforcement in core. - */ - mutex_lock(&mp->m_quotainfo->qi_quotaofflock); - mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD); - mutex_unlock(&mp->m_quotainfo->qi_quotaofflock); - - return (0); -} - - -/* - * Return quota status information, such as uquota-off, enforcements, etc. - */ -int -xfs_qm_scall_getqstat( - struct xfs_mount *mp, - struct fs_quota_stat *out) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - struct xfs_inode *uip, *gip; - boolean_t tempuqip, tempgqip; - - uip = gip = NULL; - tempuqip = tempgqip = B_FALSE; - memset(out, 0, sizeof(fs_quota_stat_t)); - - out->qs_version = FS_QSTAT_VERSION; - if (!xfs_sb_version_hasquota(&mp->m_sb)) { - out->qs_uquota.qfs_ino = NULLFSINO; - out->qs_gquota.qfs_ino = NULLFSINO; - return (0); - } - out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & - (XFS_ALL_QUOTA_ACCT| - XFS_ALL_QUOTA_ENFD)); - out->qs_pad = 0; - out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino; - out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; - - if (q) { - uip = q->qi_uquotaip; - gip = q->qi_gquotaip; - } - if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { - if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, - 0, 0, &uip) == 0) - tempuqip = B_TRUE; - } - if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) { - if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, - 0, 0, &gip) == 0) - tempgqip = B_TRUE; - } - if (uip) { - out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks; - out->qs_uquota.qfs_nextents = uip->i_d.di_nextents; - if (tempuqip) - IRELE(uip); - } - if (gip) { - out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks; - out->qs_gquota.qfs_nextents = gip->i_d.di_nextents; - if (tempgqip) - IRELE(gip); - } - if (q) { - out->qs_incoredqs = q->qi_dquots; - out->qs_btimelimit = q->qi_btimelimit; - out->qs_itimelimit = q->qi_itimelimit; - out->qs_rtbtimelimit = q->qi_rtbtimelimit; - out->qs_bwarnlimit = q->qi_bwarnlimit; - out->qs_iwarnlimit = q->qi_iwarnlimit; - } - return 0; -} - -#define XFS_DQ_MASK \ - (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK) - -/* - * Adjust quota limits, and start/stop timers accordingly. - */ -int -xfs_qm_scall_setqlim( - xfs_mount_t *mp, - xfs_dqid_t id, - uint type, - fs_disk_quota_t *newlim) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - xfs_disk_dquot_t *ddq; - xfs_dquot_t *dqp; - xfs_trans_t *tp; - int error; - xfs_qcnt_t hard, soft; - - if (newlim->d_fieldmask & ~XFS_DQ_MASK) - return EINVAL; - if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0) - return 0; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM); - if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128, - 0, 0, XFS_DEFAULT_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return (error); - } - - /* - * We don't want to race with a quotaoff so take the quotaoff lock. - * (We don't hold an inode lock, so there's nothing else to stop - * a quotaoff from happening). (XXXThis doesn't currently happen - * because we take the vfslock before calling xfs_qm_sysent). - */ - mutex_lock(&q->qi_quotaofflock); - - /* - * Get the dquot (locked), and join it to the transaction. - * Allocate the dquot if this doesn't exist. - */ - if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) { - xfs_trans_cancel(tp, XFS_TRANS_ABORT); - ASSERT(error != ENOENT); - goto out_unlock; - } - xfs_trans_dqjoin(tp, dqp); - ddq = &dqp->q_core; - - /* - * Make sure that hardlimits are >= soft limits before changing. - */ - hard = (newlim->d_fieldmask & FS_DQ_BHARD) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) : - be64_to_cpu(ddq->d_blk_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) : - be64_to_cpu(ddq->d_blk_softlimit); - if (hard == 0 || hard >= soft) { - ddq->d_blk_hardlimit = cpu_to_be64(hard); - ddq->d_blk_softlimit = cpu_to_be64(soft); - if (id == 0) { - q->qi_bhardlimit = hard; - q->qi_bsoftlimit = soft; - } - } else { - xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft); - } - hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) : - be64_to_cpu(ddq->d_rtb_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) : - be64_to_cpu(ddq->d_rtb_softlimit); - if (hard == 0 || hard >= soft) { - ddq->d_rtb_hardlimit = cpu_to_be64(hard); - ddq->d_rtb_softlimit = cpu_to_be64(soft); - if (id == 0) { - q->qi_rtbhardlimit = hard; - q->qi_rtbsoftlimit = soft; - } - } else { - xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft); - } - - hard = (newlim->d_fieldmask & FS_DQ_IHARD) ? - (xfs_qcnt_t) newlim->d_ino_hardlimit : - be64_to_cpu(ddq->d_ino_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ? - (xfs_qcnt_t) newlim->d_ino_softlimit : - be64_to_cpu(ddq->d_ino_softlimit); - if (hard == 0 || hard >= soft) { - ddq->d_ino_hardlimit = cpu_to_be64(hard); - ddq->d_ino_softlimit = cpu_to_be64(soft); - if (id == 0) { - q->qi_ihardlimit = hard; - q->qi_isoftlimit = soft; - } - } else { - xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft); - } - - /* - * Update warnings counter(s) if requested - */ - if (newlim->d_fieldmask & FS_DQ_BWARNS) - ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns); - if (newlim->d_fieldmask & FS_DQ_IWARNS) - ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns); - if (newlim->d_fieldmask & FS_DQ_RTBWARNS) - ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns); - - if (id == 0) { - /* - * Timelimits for the super user set the relative time - * the other users can be over quota for this file system. - * If it is zero a default is used. Ditto for the default - * soft and hard limit values (already done, above), and - * for warnings. - */ - if (newlim->d_fieldmask & FS_DQ_BTIMER) { - q->qi_btimelimit = newlim->d_btimer; - ddq->d_btimer = cpu_to_be32(newlim->d_btimer); - } - if (newlim->d_fieldmask & FS_DQ_ITIMER) { - q->qi_itimelimit = newlim->d_itimer; - ddq->d_itimer = cpu_to_be32(newlim->d_itimer); - } - if (newlim->d_fieldmask & FS_DQ_RTBTIMER) { - q->qi_rtbtimelimit = newlim->d_rtbtimer; - ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer); - } - if (newlim->d_fieldmask & FS_DQ_BWARNS) - q->qi_bwarnlimit = newlim->d_bwarns; - if (newlim->d_fieldmask & FS_DQ_IWARNS) - q->qi_iwarnlimit = newlim->d_iwarns; - if (newlim->d_fieldmask & FS_DQ_RTBWARNS) - q->qi_rtbwarnlimit = newlim->d_rtbwarns; - } else { - /* - * If the user is now over quota, start the timelimit. - * The user will not be 'warned'. - * Note that we keep the timers ticking, whether enforcement - * is on or off. We don't really want to bother with iterating - * over all ondisk dquots and turning the timers on/off. - */ - xfs_qm_adjust_dqtimers(mp, ddq); - } - dqp->dq_flags |= XFS_DQ_DIRTY; - xfs_trans_log_dquot(tp, dqp); - - error = xfs_trans_commit(tp, 0); - xfs_qm_dqrele(dqp); - - out_unlock: - mutex_unlock(&q->qi_quotaofflock); - return error; -} - -int -xfs_qm_scall_getquota( - xfs_mount_t *mp, - xfs_dqid_t id, - uint type, - fs_disk_quota_t *out) -{ - xfs_dquot_t *dqp; - int error; - - /* - * Try to get the dquot. We don't want it allocated on disk, so - * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't - * exist, we'll get ENOENT back. - */ - if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) { - return (error); - } - - /* - * If everything's NULL, this dquot doesn't quite exist as far as - * our utility programs are concerned. - */ - if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) { - xfs_qm_dqput(dqp); - return XFS_ERROR(ENOENT); - } - /* - * Convert the disk dquot to the exportable format - */ - xfs_qm_export_dquot(mp, &dqp->q_core, out); - xfs_qm_dqput(dqp); - return (error ? XFS_ERROR(EFAULT) : 0); -} - - -STATIC int -xfs_qm_log_quotaoff_end( - xfs_mount_t *mp, - xfs_qoff_logitem_t *startqoff, - uint flags) -{ - xfs_trans_t *tp; - int error; - xfs_qoff_logitem_t *qoffi; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END); - - if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2, - 0, 0, XFS_DEFAULT_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return (error); - } - - qoffi = xfs_trans_get_qoff_item(tp, startqoff, - flags & XFS_ALL_QUOTA_ACCT); - xfs_trans_log_quotaoff_item(tp, qoffi); - - /* - * We have to make sure that the transaction is secure on disk before we - * return and actually stop quota accounting. So, make it synchronous. - * We don't care about quotoff's performance. - */ - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); - return (error); -} - - -STATIC int -xfs_qm_log_quotaoff( - xfs_mount_t *mp, - xfs_qoff_logitem_t **qoffstartp, - uint flags) -{ - xfs_trans_t *tp; - int error; - xfs_qoff_logitem_t *qoffi=NULL; - uint oldsbqflag=0; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF); - if ((error = xfs_trans_reserve(tp, 0, - sizeof(xfs_qoff_logitem_t) * 2 + - mp->m_sb.sb_sectsize + 128, - 0, - 0, - XFS_DEFAULT_LOG_COUNT))) { - goto error0; - } - - qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT); - xfs_trans_log_quotaoff_item(tp, qoffi); - - spin_lock(&mp->m_sb_lock); - oldsbqflag = mp->m_sb.sb_qflags; - mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL; - spin_unlock(&mp->m_sb_lock); - - xfs_mod_sb(tp, XFS_SB_QFLAGS); - - /* - * We have to make sure that the transaction is secure on disk before we - * return and actually stop quota accounting. So, make it synchronous. - * We don't care about quotoff's performance. - */ - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); - -error0: - if (error) { - xfs_trans_cancel(tp, 0); - /* - * No one else is modifying sb_qflags, so this is OK. - * We still hold the quotaofflock. - */ - spin_lock(&mp->m_sb_lock); - mp->m_sb.sb_qflags = oldsbqflag; - spin_unlock(&mp->m_sb_lock); - } - *qoffstartp = qoffi; - return (error); -} - - -/* - * Translate an internal style on-disk-dquot to the exportable format. - * The main differences are that the counters/limits are all in Basic - * Blocks (BBs) instead of the internal FSBs, and all on-disk data has - * to be converted to the native endianness. - */ -STATIC void -xfs_qm_export_dquot( - xfs_mount_t *mp, - xfs_disk_dquot_t *src, - struct fs_disk_quota *dst) -{ - memset(dst, 0, sizeof(*dst)); - dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */ - dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags); - dst->d_id = be32_to_cpu(src->d_id); - dst->d_blk_hardlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit)); - dst->d_blk_softlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit)); - dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit); - dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit); - dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount)); - dst->d_icount = be64_to_cpu(src->d_icount); - dst->d_btimer = be32_to_cpu(src->d_btimer); - dst->d_itimer = be32_to_cpu(src->d_itimer); - dst->d_iwarns = be16_to_cpu(src->d_iwarns); - dst->d_bwarns = be16_to_cpu(src->d_bwarns); - dst->d_rtb_hardlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit)); - dst->d_rtb_softlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit)); - dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount)); - dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer); - dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns); - - /* - * Internally, we don't reset all the timers when quota enforcement - * gets turned off. No need to confuse the user level code, - * so return zeroes in that case. - */ - if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) || - (!XFS_IS_OQUOTA_ENFORCED(mp) && - (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) { - dst->d_btimer = 0; - dst->d_itimer = 0; - dst->d_rtbtimer = 0; - } - -#ifdef DEBUG - if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) || - (XFS_IS_OQUOTA_ENFORCED(mp) && - (dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) && - dst->d_id != 0) { - if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) && - (dst->d_blk_softlimit > 0)) { - ASSERT(dst->d_btimer != 0); - } - if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) && - (dst->d_ino_softlimit > 0)) { - ASSERT(dst->d_itimer != 0); - } - } -#endif -} - -STATIC uint -xfs_qm_export_qtype_flags( - uint flags) -{ - /* - * Can't be more than one, or none. - */ - ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) != - (FS_PROJ_QUOTA | FS_USER_QUOTA)); - ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) != - (FS_PROJ_QUOTA | FS_GROUP_QUOTA)); - ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) != - (FS_USER_QUOTA | FS_GROUP_QUOTA)); - ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0); - - return (flags & XFS_DQ_USER) ? - FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ? - FS_PROJ_QUOTA : FS_GROUP_QUOTA; -} - -STATIC uint -xfs_qm_export_flags( - uint flags) -{ - uint uflags; - - uflags = 0; - if (flags & XFS_UQUOTA_ACCT) - uflags |= FS_QUOTA_UDQ_ACCT; - if (flags & XFS_PQUOTA_ACCT) - uflags |= FS_QUOTA_PDQ_ACCT; - if (flags & XFS_GQUOTA_ACCT) - uflags |= FS_QUOTA_GDQ_ACCT; - if (flags & XFS_UQUOTA_ENFD) - uflags |= FS_QUOTA_UDQ_ENFD; - if (flags & (XFS_OQUOTA_ENFD)) { - uflags |= (flags & XFS_GQUOTA_ACCT) ? - FS_QUOTA_GDQ_ENFD : FS_QUOTA_PDQ_ENFD; - } - return (uflags); -} - - -STATIC int -xfs_dqrele_inode( - struct xfs_inode *ip, - struct xfs_perag *pag, - int flags) -{ - /* skip quota inodes */ - if (ip == ip->i_mount->m_quotainfo->qi_uquotaip || - ip == ip->i_mount->m_quotainfo->qi_gquotaip) { - ASSERT(ip->i_udquot == NULL); - ASSERT(ip->i_gdquot == NULL); - return 0; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) { - xfs_qm_dqrele(ip->i_udquot); - ip->i_udquot = NULL; - } - if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) { - xfs_qm_dqrele(ip->i_gdquot); - ip->i_gdquot = NULL; - } - xfs_iunlock(ip, XFS_ILOCK_EXCL); - return 0; -} - - -/* - * Go thru all the inodes in the file system, releasing their dquots. - * - * Note that the mount structure gets modified to indicate that quotas are off - * AFTER this, in the case of quotaoff. - */ -void -xfs_qm_dqrele_all_inodes( - struct xfs_mount *mp, - uint flags) -{ - ASSERT(mp->m_quotainfo); - xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags); -} diff --git a/fs/xfs/quota/xfs_quota_priv.h b/fs/xfs/quota/xfs_quota_priv.h deleted file mode 100644 index 94a3d927d716..000000000000 --- a/fs/xfs/quota/xfs_quota_priv.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_QUOTA_PRIV_H__ -#define __XFS_QUOTA_PRIV_H__ - -/* - * Number of bmaps that we ask from bmapi when doing a quotacheck. - * We make this restriction to keep the memory usage to a minimum. - */ -#define XFS_DQITER_MAP_SIZE 10 - -/* - * Hash into a bucket in the dquot hash table, based on . - */ -#define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \ - (__psunsigned_t)(id)) & \ - (xfs_Gqm->qm_dqhashmask - 1)) -#define XFS_DQ_HASH(mp, id, type) (type == XFS_DQ_USER ? \ - (xfs_Gqm->qm_usr_dqhtable + \ - XFS_DQ_HASHVAL(mp, id)) : \ - (xfs_Gqm->qm_grp_dqhtable + \ - XFS_DQ_HASHVAL(mp, id))) -#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ - !dqp->q_core.d_blk_hardlimit && \ - !dqp->q_core.d_blk_softlimit && \ - !dqp->q_core.d_rtb_hardlimit && \ - !dqp->q_core.d_rtb_softlimit && \ - !dqp->q_core.d_ino_hardlimit && \ - !dqp->q_core.d_ino_softlimit && \ - !dqp->q_core.d_bcount && \ - !dqp->q_core.d_rtbcount && \ - !dqp->q_core.d_icount) - -#define DQFLAGTO_TYPESTR(d) (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \ - (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \ - (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???"))) - -#endif /* __XFS_QUOTA_PRIV_H__ */ diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c deleted file mode 100644 index 4d00ee67792d..000000000000 --- a/fs/xfs/quota/xfs_trans_dquot.c +++ /dev/null @@ -1,890 +0,0 @@ -/* - * Copyright (c) 2000-2002 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_priv.h" -#include "xfs_qm.h" - -STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); - -/* - * Add the locked dquot to the transaction. - * The dquot must be locked, and it cannot be associated with any - * transaction. - */ -void -xfs_trans_dqjoin( - xfs_trans_t *tp, - xfs_dquot_t *dqp) -{ - ASSERT(dqp->q_transp != tp); - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(dqp->q_logitem.qli_dquot == dqp); - - /* - * Get a log_item_desc to point at the new item. - */ - xfs_trans_add_item(tp, &dqp->q_logitem.qli_item); - - /* - * Initialize d_transp so we can later determine if this dquot is - * associated with this transaction. - */ - dqp->q_transp = tp; -} - - -/* - * This is called to mark the dquot as needing - * to be logged when the transaction is committed. The dquot must - * already be associated with the given transaction. - * Note that it marks the entire transaction as dirty. In the ordinary - * case, this gets called via xfs_trans_commit, after the transaction - * is already dirty. However, there's nothing stop this from getting - * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY - * flag. - */ -void -xfs_trans_log_dquot( - xfs_trans_t *tp, - xfs_dquot_t *dqp) -{ - ASSERT(dqp->q_transp == tp); - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - tp->t_flags |= XFS_TRANS_DIRTY; - dqp->q_logitem.qli_item.li_desc->lid_flags |= XFS_LID_DIRTY; -} - -/* - * Carry forward whatever is left of the quota blk reservation to - * the spanky new transaction - */ -void -xfs_trans_dup_dqinfo( - xfs_trans_t *otp, - xfs_trans_t *ntp) -{ - xfs_dqtrx_t *oq, *nq; - int i,j; - xfs_dqtrx_t *oqa, *nqa; - - if (!otp->t_dqinfo) - return; - - xfs_trans_alloc_dqinfo(ntp); - oqa = otp->t_dqinfo->dqa_usrdquots; - nqa = ntp->t_dqinfo->dqa_usrdquots; - - /* - * Because the quota blk reservation is carried forward, - * it is also necessary to carry forward the DQ_DIRTY flag. - */ - if(otp->t_flags & XFS_TRANS_DQ_DIRTY) - ntp->t_flags |= XFS_TRANS_DQ_DIRTY; - - for (j = 0; j < 2; j++) { - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - if (oqa[i].qt_dquot == NULL) - break; - oq = &oqa[i]; - nq = &nqa[i]; - - nq->qt_dquot = oq->qt_dquot; - nq->qt_bcount_delta = nq->qt_icount_delta = 0; - nq->qt_rtbcount_delta = 0; - - /* - * Transfer whatever is left of the reservations. - */ - nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used; - oq->qt_blk_res = oq->qt_blk_res_used; - - nq->qt_rtblk_res = oq->qt_rtblk_res - - oq->qt_rtblk_res_used; - oq->qt_rtblk_res = oq->qt_rtblk_res_used; - - nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used; - oq->qt_ino_res = oq->qt_ino_res_used; - - } - oqa = otp->t_dqinfo->dqa_grpdquots; - nqa = ntp->t_dqinfo->dqa_grpdquots; - } -} - -/* - * Wrap around mod_dquot to account for both user and group quotas. - */ -void -xfs_trans_mod_dquot_byino( - xfs_trans_t *tp, - xfs_inode_t *ip, - uint field, - long delta) -{ - xfs_mount_t *mp = tp->t_mountp; - - if (!XFS_IS_QUOTA_RUNNING(mp) || - !XFS_IS_QUOTA_ON(mp) || - ip->i_ino == mp->m_sb.sb_uquotino || - ip->i_ino == mp->m_sb.sb_gquotino) - return; - - if (tp->t_dqinfo == NULL) - xfs_trans_alloc_dqinfo(tp); - - if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) - (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); - if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot) - (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); -} - -STATIC xfs_dqtrx_t * -xfs_trans_get_dqtrx( - xfs_trans_t *tp, - xfs_dquot_t *dqp) -{ - int i; - xfs_dqtrx_t *qa; - - qa = XFS_QM_ISUDQ(dqp) ? - tp->t_dqinfo->dqa_usrdquots : tp->t_dqinfo->dqa_grpdquots; - - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - if (qa[i].qt_dquot == NULL || - qa[i].qt_dquot == dqp) - return &qa[i]; - } - - return NULL; -} - -/* - * Make the changes in the transaction structure. - * The moral equivalent to xfs_trans_mod_sb(). - * We don't touch any fields in the dquot, so we don't care - * if it's locked or not (most of the time it won't be). - */ -void -xfs_trans_mod_dquot( - xfs_trans_t *tp, - xfs_dquot_t *dqp, - uint field, - long delta) -{ - xfs_dqtrx_t *qtrx; - - ASSERT(tp); - ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp)); - qtrx = NULL; - - if (tp->t_dqinfo == NULL) - xfs_trans_alloc_dqinfo(tp); - /* - * Find either the first free slot or the slot that belongs - * to this dquot. - */ - qtrx = xfs_trans_get_dqtrx(tp, dqp); - ASSERT(qtrx); - if (qtrx->qt_dquot == NULL) - qtrx->qt_dquot = dqp; - - switch (field) { - - /* - * regular disk blk reservation - */ - case XFS_TRANS_DQ_RES_BLKS: - qtrx->qt_blk_res += (ulong)delta; - break; - - /* - * inode reservation - */ - case XFS_TRANS_DQ_RES_INOS: - qtrx->qt_ino_res += (ulong)delta; - break; - - /* - * disk blocks used. - */ - case XFS_TRANS_DQ_BCOUNT: - if (qtrx->qt_blk_res && delta > 0) { - qtrx->qt_blk_res_used += (ulong)delta; - ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used); - } - qtrx->qt_bcount_delta += delta; - break; - - case XFS_TRANS_DQ_DELBCOUNT: - qtrx->qt_delbcnt_delta += delta; - break; - - /* - * Inode Count - */ - case XFS_TRANS_DQ_ICOUNT: - if (qtrx->qt_ino_res && delta > 0) { - qtrx->qt_ino_res_used += (ulong)delta; - ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); - } - qtrx->qt_icount_delta += delta; - break; - - /* - * rtblk reservation - */ - case XFS_TRANS_DQ_RES_RTBLKS: - qtrx->qt_rtblk_res += (ulong)delta; - break; - - /* - * rtblk count - */ - case XFS_TRANS_DQ_RTBCOUNT: - if (qtrx->qt_rtblk_res && delta > 0) { - qtrx->qt_rtblk_res_used += (ulong)delta; - ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used); - } - qtrx->qt_rtbcount_delta += delta; - break; - - case XFS_TRANS_DQ_DELRTBCOUNT: - qtrx->qt_delrtb_delta += delta; - break; - - default: - ASSERT(0); - } - tp->t_flags |= XFS_TRANS_DQ_DIRTY; -} - - -/* - * Given an array of dqtrx structures, lock all the dquots associated - * and join them to the transaction, provided they have been modified. - * We know that the highest number of dquots (of one type - usr OR grp), - * involved in a transaction is 2 and that both usr and grp combined - 3. - * So, we don't attempt to make this very generic. - */ -STATIC void -xfs_trans_dqlockedjoin( - xfs_trans_t *tp, - xfs_dqtrx_t *q) -{ - ASSERT(q[0].qt_dquot != NULL); - if (q[1].qt_dquot == NULL) { - xfs_dqlock(q[0].qt_dquot); - xfs_trans_dqjoin(tp, q[0].qt_dquot); - } else { - ASSERT(XFS_QM_TRANS_MAXDQS == 2); - xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot); - xfs_trans_dqjoin(tp, q[0].qt_dquot); - xfs_trans_dqjoin(tp, q[1].qt_dquot); - } -} - - -/* - * Called by xfs_trans_commit() and similar in spirit to - * xfs_trans_apply_sb_deltas(). - * Go thru all the dquots belonging to this transaction and modify the - * INCORE dquot to reflect the actual usages. - * Unreserve just the reservations done by this transaction. - * dquot is still left locked at exit. - */ -void -xfs_trans_apply_dquot_deltas( - xfs_trans_t *tp) -{ - int i, j; - xfs_dquot_t *dqp; - xfs_dqtrx_t *qtrx, *qa; - xfs_disk_dquot_t *d; - long totalbdelta; - long totalrtbdelta; - - if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY)) - return; - - ASSERT(tp->t_dqinfo); - qa = tp->t_dqinfo->dqa_usrdquots; - for (j = 0; j < 2; j++) { - if (qa[0].qt_dquot == NULL) { - qa = tp->t_dqinfo->dqa_grpdquots; - continue; - } - - /* - * Lock all of the dquots and join them to the transaction. - */ - xfs_trans_dqlockedjoin(tp, qa); - - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - qtrx = &qa[i]; - /* - * The array of dquots is filled - * sequentially, not sparsely. - */ - if ((dqp = qtrx->qt_dquot) == NULL) - break; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(dqp->q_transp == tp); - - /* - * adjust the actual number of blocks used - */ - d = &dqp->q_core; - - /* - * The issue here is - sometimes we don't make a blkquota - * reservation intentionally to be fair to users - * (when the amount is small). On the other hand, - * delayed allocs do make reservations, but that's - * outside of a transaction, so we have no - * idea how much was really reserved. - * So, here we've accumulated delayed allocation blks and - * non-delay blks. The assumption is that the - * delayed ones are always reserved (outside of a - * transaction), and the others may or may not have - * quota reservations. - */ - totalbdelta = qtrx->qt_bcount_delta + - qtrx->qt_delbcnt_delta; - totalrtbdelta = qtrx->qt_rtbcount_delta + - qtrx->qt_delrtb_delta; -#ifdef DEBUG - if (totalbdelta < 0) - ASSERT(be64_to_cpu(d->d_bcount) >= - -totalbdelta); - - if (totalrtbdelta < 0) - ASSERT(be64_to_cpu(d->d_rtbcount) >= - -totalrtbdelta); - - if (qtrx->qt_icount_delta < 0) - ASSERT(be64_to_cpu(d->d_icount) >= - -qtrx->qt_icount_delta); -#endif - if (totalbdelta) - be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta); - - if (qtrx->qt_icount_delta) - be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta); - - if (totalrtbdelta) - be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta); - - /* - * Get any default limits in use. - * Start/reset the timer(s) if needed. - */ - if (d->d_id) { - xfs_qm_adjust_dqlimits(tp->t_mountp, d); - xfs_qm_adjust_dqtimers(tp->t_mountp, d); - } - - dqp->dq_flags |= XFS_DQ_DIRTY; - /* - * add this to the list of items to get logged - */ - xfs_trans_log_dquot(tp, dqp); - /* - * Take off what's left of the original reservation. - * In case of delayed allocations, there's no - * reservation that a transaction structure knows of. - */ - if (qtrx->qt_blk_res != 0) { - if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) { - if (qtrx->qt_blk_res > - qtrx->qt_blk_res_used) - dqp->q_res_bcount -= (xfs_qcnt_t) - (qtrx->qt_blk_res - - qtrx->qt_blk_res_used); - else - dqp->q_res_bcount -= (xfs_qcnt_t) - (qtrx->qt_blk_res_used - - qtrx->qt_blk_res); - } - } else { - /* - * These blks were never reserved, either inside - * a transaction or outside one (in a delayed - * allocation). Also, this isn't always a - * negative number since we sometimes - * deliberately skip quota reservations. - */ - if (qtrx->qt_bcount_delta) { - dqp->q_res_bcount += - (xfs_qcnt_t)qtrx->qt_bcount_delta; - } - } - /* - * Adjust the RT reservation. - */ - if (qtrx->qt_rtblk_res != 0) { - if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) { - if (qtrx->qt_rtblk_res > - qtrx->qt_rtblk_res_used) - dqp->q_res_rtbcount -= (xfs_qcnt_t) - (qtrx->qt_rtblk_res - - qtrx->qt_rtblk_res_used); - else - dqp->q_res_rtbcount -= (xfs_qcnt_t) - (qtrx->qt_rtblk_res_used - - qtrx->qt_rtblk_res); - } - } else { - if (qtrx->qt_rtbcount_delta) - dqp->q_res_rtbcount += - (xfs_qcnt_t)qtrx->qt_rtbcount_delta; - } - - /* - * Adjust the inode reservation. - */ - if (qtrx->qt_ino_res != 0) { - ASSERT(qtrx->qt_ino_res >= - qtrx->qt_ino_res_used); - if (qtrx->qt_ino_res > qtrx->qt_ino_res_used) - dqp->q_res_icount -= (xfs_qcnt_t) - (qtrx->qt_ino_res - - qtrx->qt_ino_res_used); - } else { - if (qtrx->qt_icount_delta) - dqp->q_res_icount += - (xfs_qcnt_t)qtrx->qt_icount_delta; - } - - ASSERT(dqp->q_res_bcount >= - be64_to_cpu(dqp->q_core.d_bcount)); - ASSERT(dqp->q_res_icount >= - be64_to_cpu(dqp->q_core.d_icount)); - ASSERT(dqp->q_res_rtbcount >= - be64_to_cpu(dqp->q_core.d_rtbcount)); - } - /* - * Do the group quotas next - */ - qa = tp->t_dqinfo->dqa_grpdquots; - } -} - -/* - * Release the reservations, and adjust the dquots accordingly. - * This is called only when the transaction is being aborted. If by - * any chance we have done dquot modifications incore (ie. deltas) already, - * we simply throw those away, since that's the expected behavior - * when a transaction is curtailed without a commit. - */ -void -xfs_trans_unreserve_and_mod_dquots( - xfs_trans_t *tp) -{ - int i, j; - xfs_dquot_t *dqp; - xfs_dqtrx_t *qtrx, *qa; - boolean_t locked; - - if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY)) - return; - - qa = tp->t_dqinfo->dqa_usrdquots; - - for (j = 0; j < 2; j++) { - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - qtrx = &qa[i]; - /* - * We assume that the array of dquots is filled - * sequentially, not sparsely. - */ - if ((dqp = qtrx->qt_dquot) == NULL) - break; - /* - * Unreserve the original reservation. We don't care - * about the number of blocks used field, or deltas. - * Also we don't bother to zero the fields. - */ - locked = B_FALSE; - if (qtrx->qt_blk_res) { - xfs_dqlock(dqp); - locked = B_TRUE; - dqp->q_res_bcount -= - (xfs_qcnt_t)qtrx->qt_blk_res; - } - if (qtrx->qt_ino_res) { - if (!locked) { - xfs_dqlock(dqp); - locked = B_TRUE; - } - dqp->q_res_icount -= - (xfs_qcnt_t)qtrx->qt_ino_res; - } - - if (qtrx->qt_rtblk_res) { - if (!locked) { - xfs_dqlock(dqp); - locked = B_TRUE; - } - dqp->q_res_rtbcount -= - (xfs_qcnt_t)qtrx->qt_rtblk_res; - } - if (locked) - xfs_dqunlock(dqp); - - } - qa = tp->t_dqinfo->dqa_grpdquots; - } -} - -STATIC void -xfs_quota_warn( - struct xfs_mount *mp, - struct xfs_dquot *dqp, - int type) -{ - /* no warnings for project quotas - we just return ENOSPC later */ - if (dqp->dq_flags & XFS_DQ_PROJ) - return; - quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA, - be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev, - type); -} - -/* - * This reserves disk blocks and inodes against a dquot. - * Flags indicate if the dquot is to be locked here and also - * if the blk reservation is for RT or regular blocks. - * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. - */ -STATIC int -xfs_trans_dqresv( - xfs_trans_t *tp, - xfs_mount_t *mp, - xfs_dquot_t *dqp, - long nblks, - long ninos, - uint flags) -{ - xfs_qcnt_t hardlimit; - xfs_qcnt_t softlimit; - time_t timer; - xfs_qwarncnt_t warns; - xfs_qwarncnt_t warnlimit; - xfs_qcnt_t count; - xfs_qcnt_t *resbcountp; - xfs_quotainfo_t *q = mp->m_quotainfo; - - - xfs_dqlock(dqp); - - if (flags & XFS_TRANS_DQ_RES_BLKS) { - hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit); - if (!hardlimit) - hardlimit = q->qi_bhardlimit; - softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit); - if (!softlimit) - softlimit = q->qi_bsoftlimit; - timer = be32_to_cpu(dqp->q_core.d_btimer); - warns = be16_to_cpu(dqp->q_core.d_bwarns); - warnlimit = dqp->q_mount->m_quotainfo->qi_bwarnlimit; - resbcountp = &dqp->q_res_bcount; - } else { - ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS); - hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit); - if (!hardlimit) - hardlimit = q->qi_rtbhardlimit; - softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit); - if (!softlimit) - softlimit = q->qi_rtbsoftlimit; - timer = be32_to_cpu(dqp->q_core.d_rtbtimer); - warns = be16_to_cpu(dqp->q_core.d_rtbwarns); - warnlimit = dqp->q_mount->m_quotainfo->qi_rtbwarnlimit; - resbcountp = &dqp->q_res_rtbcount; - } - - if ((flags & XFS_QMOPT_FORCE_RES) == 0 && - dqp->q_core.d_id && - ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) || - (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) && - (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) { - if (nblks > 0) { - /* - * dquot is locked already. See if we'd go over the - * hardlimit or exceed the timelimit if we allocate - * nblks. - */ - if (hardlimit > 0ULL && - hardlimit <= nblks + *resbcountp) { - xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN); - goto error_return; - } - if (softlimit > 0ULL && - softlimit <= nblks + *resbcountp) { - if ((timer != 0 && get_seconds() > timer) || - (warns != 0 && warns >= warnlimit)) { - xfs_quota_warn(mp, dqp, - QUOTA_NL_BSOFTLONGWARN); - goto error_return; - } - - xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN); - } - } - if (ninos > 0) { - count = be64_to_cpu(dqp->q_core.d_icount); - timer = be32_to_cpu(dqp->q_core.d_itimer); - warns = be16_to_cpu(dqp->q_core.d_iwarns); - warnlimit = dqp->q_mount->m_quotainfo->qi_iwarnlimit; - hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit); - if (!hardlimit) - hardlimit = q->qi_ihardlimit; - softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit); - if (!softlimit) - softlimit = q->qi_isoftlimit; - - if (hardlimit > 0ULL && count >= hardlimit) { - xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN); - goto error_return; - } - if (softlimit > 0ULL && count >= softlimit) { - if ((timer != 0 && get_seconds() > timer) || - (warns != 0 && warns >= warnlimit)) { - xfs_quota_warn(mp, dqp, - QUOTA_NL_ISOFTLONGWARN); - goto error_return; - } - xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN); - } - } - } - - /* - * Change the reservation, but not the actual usage. - * Note that q_res_bcount = q_core.d_bcount + resv - */ - (*resbcountp) += (xfs_qcnt_t)nblks; - if (ninos != 0) - dqp->q_res_icount += (xfs_qcnt_t)ninos; - - /* - * note the reservation amt in the trans struct too, - * so that the transaction knows how much was reserved by - * it against this particular dquot. - * We don't do this when we are reserving for a delayed allocation, - * because we don't have the luxury of a transaction envelope then. - */ - if (tp) { - ASSERT(tp->t_dqinfo); - ASSERT(flags & XFS_QMOPT_RESBLK_MASK); - if (nblks != 0) - xfs_trans_mod_dquot(tp, dqp, - flags & XFS_QMOPT_RESBLK_MASK, - nblks); - if (ninos != 0) - xfs_trans_mod_dquot(tp, dqp, - XFS_TRANS_DQ_RES_INOS, - ninos); - } - ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount)); - ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount)); - ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount)); - - xfs_dqunlock(dqp); - return 0; - -error_return: - xfs_dqunlock(dqp); - if (flags & XFS_QMOPT_ENOSPC) - return ENOSPC; - return EDQUOT; -} - - -/* - * Given dquot(s), make disk block and/or inode reservations against them. - * The fact that this does the reservation against both the usr and - * grp/prj quotas is important, because this follows a both-or-nothing - * approach. - * - * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. - * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota. - * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks - * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks - * dquots are unlocked on return, if they were not locked by caller. - */ -int -xfs_trans_reserve_quota_bydquots( - xfs_trans_t *tp, - xfs_mount_t *mp, - xfs_dquot_t *udqp, - xfs_dquot_t *gdqp, - long nblks, - long ninos, - uint flags) -{ - int resvd = 0, error; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - if (tp && tp->t_dqinfo == NULL) - xfs_trans_alloc_dqinfo(tp); - - ASSERT(flags & XFS_QMOPT_RESBLK_MASK); - - if (udqp) { - error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, - (flags & ~XFS_QMOPT_ENOSPC)); - if (error) - return error; - resvd = 1; - } - - if (gdqp) { - error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags); - if (error) { - /* - * can't do it, so backout previous reservation - */ - if (resvd) { - flags |= XFS_QMOPT_FORCE_RES; - xfs_trans_dqresv(tp, mp, udqp, - -nblks, -ninos, flags); - } - return error; - } - } - - /* - * Didn't change anything critical, so, no need to log - */ - return 0; -} - - -/* - * Lock the dquot and change the reservation if we can. - * This doesn't change the actual usage, just the reservation. - * The inode sent in is locked. - */ -int -xfs_trans_reserve_quota_nblks( - struct xfs_trans *tp, - struct xfs_inode *ip, - long nblks, - long ninos, - uint flags) -{ - struct xfs_mount *mp = ip->i_mount; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - if (XFS_IS_PQUOTA_ON(mp)) - flags |= XFS_QMOPT_ENOSPC; - - ASSERT(ip->i_ino != mp->m_sb.sb_uquotino); - ASSERT(ip->i_ino != mp->m_sb.sb_gquotino); - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == - XFS_TRANS_DQ_RES_RTBLKS || - (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == - XFS_TRANS_DQ_RES_BLKS); - - /* - * Reserve nblks against these dquots, with trans as the mediator. - */ - return xfs_trans_reserve_quota_bydquots(tp, mp, - ip->i_udquot, ip->i_gdquot, - nblks, ninos, flags); -} - -/* - * This routine is called to allocate a quotaoff log item. - */ -xfs_qoff_logitem_t * -xfs_trans_get_qoff_item( - xfs_trans_t *tp, - xfs_qoff_logitem_t *startqoff, - uint flags) -{ - xfs_qoff_logitem_t *q; - - ASSERT(tp != NULL); - - q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags); - ASSERT(q != NULL); - - /* - * Get a log_item_desc to point at the new item. - */ - xfs_trans_add_item(tp, &q->qql_item); - return q; -} - - -/* - * This is called to mark the quotaoff logitem as needing - * to be logged when the transaction is committed. The logitem must - * already be associated with the given transaction. - */ -void -xfs_trans_log_quotaoff_item( - xfs_trans_t *tp, - xfs_qoff_logitem_t *qlp) -{ - tp->t_flags |= XFS_TRANS_DIRTY; - qlp->qql_item.li_desc->lid_flags |= XFS_LID_DIRTY; -} - -STATIC void -xfs_trans_alloc_dqinfo( - xfs_trans_t *tp) -{ - tp->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP); -} - -void -xfs_trans_free_dqinfo( - xfs_trans_t *tp) -{ - if (!tp->t_dqinfo) - return; - kmem_zone_free(xfs_Gqm->qm_dqtrxzone, tp->t_dqinfo); - tp->t_dqinfo = NULL; -} diff --git a/fs/xfs/support/uuid.c b/fs/xfs/support/uuid.c deleted file mode 100644 index b83f76b6d410..000000000000 --- a/fs/xfs/support/uuid.c +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include - -/* IRIX interpretation of an uuid_t */ -typedef struct { - __be32 uu_timelow; - __be16 uu_timemid; - __be16 uu_timehi; - __be16 uu_clockseq; - __be16 uu_node[3]; -} xfs_uu_t; - -/* - * uuid_getnodeuniq - obtain the node unique fields of a UUID. - * - * This is not in any way a standard or condoned UUID function; - * it just something that's needed for user-level file handles. - */ -void -uuid_getnodeuniq(uuid_t *uuid, int fsid [2]) -{ - xfs_uu_t *uup = (xfs_uu_t *)uuid; - - fsid[0] = (be16_to_cpu(uup->uu_clockseq) << 16) | - be16_to_cpu(uup->uu_timemid); - fsid[1] = be32_to_cpu(uup->uu_timelow); -} - -int -uuid_is_nil(uuid_t *uuid) -{ - int i; - char *cp = (char *)uuid; - - if (uuid == NULL) - return 0; - /* implied check of version number here... */ - for (i = 0; i < sizeof *uuid; i++) - if (*cp++) return 0; /* not nil */ - return 1; /* is nil */ -} - -int -uuid_equal(uuid_t *uuid1, uuid_t *uuid2) -{ - return memcmp(uuid1, uuid2, sizeof(uuid_t)) ? 0 : 1; -} diff --git a/fs/xfs/support/uuid.h b/fs/xfs/support/uuid.h deleted file mode 100644 index 4732d71262cc..000000000000 --- a/fs/xfs/support/uuid.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SUPPORT_UUID_H__ -#define __XFS_SUPPORT_UUID_H__ - -typedef struct { - unsigned char __u_bits[16]; -} uuid_t; - -extern int uuid_is_nil(uuid_t *uuid); -extern int uuid_equal(uuid_t *uuid1, uuid_t *uuid2); -extern void uuid_getnodeuniq(uuid_t *uuid, int fsid [2]); - -#endif /* __XFS_SUPPORT_UUID_H__ */ diff --git a/fs/xfs/time.h b/fs/xfs/time.h new file mode 100644 index 000000000000..387e695a184c --- /dev/null +++ b/fs/xfs/time.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_SUPPORT_TIME_H__ +#define __XFS_SUPPORT_TIME_H__ + +#include +#include + +typedef struct timespec timespec_t; + +static inline void delay(long ticks) +{ + schedule_timeout_uninterruptible(ticks); +} + +static inline void nanotime(struct timespec *tvp) +{ + *tvp = CURRENT_TIME; +} + +#endif /* __XFS_SUPPORT_TIME_H__ */ diff --git a/fs/xfs/uuid.c b/fs/xfs/uuid.c new file mode 100644 index 000000000000..b83f76b6d410 --- /dev/null +++ b/fs/xfs/uuid.c @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include + +/* IRIX interpretation of an uuid_t */ +typedef struct { + __be32 uu_timelow; + __be16 uu_timemid; + __be16 uu_timehi; + __be16 uu_clockseq; + __be16 uu_node[3]; +} xfs_uu_t; + +/* + * uuid_getnodeuniq - obtain the node unique fields of a UUID. + * + * This is not in any way a standard or condoned UUID function; + * it just something that's needed for user-level file handles. + */ +void +uuid_getnodeuniq(uuid_t *uuid, int fsid [2]) +{ + xfs_uu_t *uup = (xfs_uu_t *)uuid; + + fsid[0] = (be16_to_cpu(uup->uu_clockseq) << 16) | + be16_to_cpu(uup->uu_timemid); + fsid[1] = be32_to_cpu(uup->uu_timelow); +} + +int +uuid_is_nil(uuid_t *uuid) +{ + int i; + char *cp = (char *)uuid; + + if (uuid == NULL) + return 0; + /* implied check of version number here... */ + for (i = 0; i < sizeof *uuid; i++) + if (*cp++) return 0; /* not nil */ + return 1; /* is nil */ +} + +int +uuid_equal(uuid_t *uuid1, uuid_t *uuid2) +{ + return memcmp(uuid1, uuid2, sizeof(uuid_t)) ? 0 : 1; +} diff --git a/fs/xfs/uuid.h b/fs/xfs/uuid.h new file mode 100644 index 000000000000..4732d71262cc --- /dev/null +++ b/fs/xfs/uuid.h @@ -0,0 +1,29 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_SUPPORT_UUID_H__ +#define __XFS_SUPPORT_UUID_H__ + +typedef struct { + unsigned char __u_bits[16]; +} uuid_t; + +extern int uuid_is_nil(uuid_t *uuid); +extern int uuid_equal(uuid_t *uuid1, uuid_t *uuid2); +extern void uuid_getnodeuniq(uuid_t *uuid, int fsid [2]); + +#endif /* __XFS_SUPPORT_UUID_H__ */ diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c new file mode 100644 index 000000000000..b6c4b3795c4a --- /dev/null +++ b/fs/xfs/xfs_acl.c @@ -0,0 +1,420 @@ +/* + * Copyright (c) 2008, Christoph Hellwig + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_acl.h" +#include "xfs_attr.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_vnodeops.h" +#include "xfs_trace.h" +#include +#include +#include + + +/* + * Locking scheme: + * - all ACL updates are protected by inode->i_mutex, which is taken before + * calling into this file. + */ + +STATIC struct posix_acl * +xfs_acl_from_disk(struct xfs_acl *aclp) +{ + struct posix_acl_entry *acl_e; + struct posix_acl *acl; + struct xfs_acl_entry *ace; + int count, i; + + count = be32_to_cpu(aclp->acl_cnt); + + acl = posix_acl_alloc(count, GFP_KERNEL); + if (!acl) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < count; i++) { + acl_e = &acl->a_entries[i]; + ace = &aclp->acl_entry[i]; + + /* + * The tag is 32 bits on disk and 16 bits in core. + * + * Because every access to it goes through the core + * format first this is not a problem. + */ + acl_e->e_tag = be32_to_cpu(ace->ae_tag); + acl_e->e_perm = be16_to_cpu(ace->ae_perm); + + switch (acl_e->e_tag) { + case ACL_USER: + case ACL_GROUP: + acl_e->e_id = be32_to_cpu(ace->ae_id); + break; + case ACL_USER_OBJ: + case ACL_GROUP_OBJ: + case ACL_MASK: + case ACL_OTHER: + acl_e->e_id = ACL_UNDEFINED_ID; + break; + default: + goto fail; + } + } + return acl; + +fail: + posix_acl_release(acl); + return ERR_PTR(-EINVAL); +} + +STATIC void +xfs_acl_to_disk(struct xfs_acl *aclp, const struct posix_acl *acl) +{ + const struct posix_acl_entry *acl_e; + struct xfs_acl_entry *ace; + int i; + + aclp->acl_cnt = cpu_to_be32(acl->a_count); + for (i = 0; i < acl->a_count; i++) { + ace = &aclp->acl_entry[i]; + acl_e = &acl->a_entries[i]; + + ace->ae_tag = cpu_to_be32(acl_e->e_tag); + ace->ae_id = cpu_to_be32(acl_e->e_id); + ace->ae_perm = cpu_to_be16(acl_e->e_perm); + } +} + +struct posix_acl * +xfs_get_acl(struct inode *inode, int type) +{ + struct xfs_inode *ip = XFS_I(inode); + struct posix_acl *acl; + struct xfs_acl *xfs_acl; + int len = sizeof(struct xfs_acl); + unsigned char *ea_name; + int error; + + acl = get_cached_acl(inode, type); + if (acl != ACL_NOT_CACHED) + return acl; + + trace_xfs_get_acl(ip); + + switch (type) { + case ACL_TYPE_ACCESS: + ea_name = SGI_ACL_FILE; + break; + case ACL_TYPE_DEFAULT: + ea_name = SGI_ACL_DEFAULT; + break; + default: + BUG(); + } + + /* + * If we have a cached ACLs value just return it, not need to + * go out to the disk. + */ + + xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL); + if (!xfs_acl) + return ERR_PTR(-ENOMEM); + + error = -xfs_attr_get(ip, ea_name, (unsigned char *)xfs_acl, + &len, ATTR_ROOT); + if (error) { + /* + * If the attribute doesn't exist make sure we have a negative + * cache entry, for any other error assume it is transient and + * leave the cache entry as ACL_NOT_CACHED. + */ + if (error == -ENOATTR) { + acl = NULL; + goto out_update_cache; + } + goto out; + } + + acl = xfs_acl_from_disk(xfs_acl); + if (IS_ERR(acl)) + goto out; + + out_update_cache: + set_cached_acl(inode, type, acl); + out: + kfree(xfs_acl); + return acl; +} + +STATIC int +xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) +{ + struct xfs_inode *ip = XFS_I(inode); + unsigned char *ea_name; + int error; + + if (S_ISLNK(inode->i_mode)) + return -EOPNOTSUPP; + + switch (type) { + case ACL_TYPE_ACCESS: + ea_name = SGI_ACL_FILE; + break; + case ACL_TYPE_DEFAULT: + if (!S_ISDIR(inode->i_mode)) + return acl ? -EACCES : 0; + ea_name = SGI_ACL_DEFAULT; + break; + default: + return -EINVAL; + } + + if (acl) { + struct xfs_acl *xfs_acl; + int len; + + xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL); + if (!xfs_acl) + return -ENOMEM; + + xfs_acl_to_disk(xfs_acl, acl); + len = sizeof(struct xfs_acl) - + (sizeof(struct xfs_acl_entry) * + (XFS_ACL_MAX_ENTRIES - acl->a_count)); + + error = -xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl, + len, ATTR_ROOT); + + kfree(xfs_acl); + } else { + /* + * A NULL ACL argument means we want to remove the ACL. + */ + error = -xfs_attr_remove(ip, ea_name, ATTR_ROOT); + + /* + * If the attribute didn't exist to start with that's fine. + */ + if (error == -ENOATTR) + error = 0; + } + + if (!error) + set_cached_acl(inode, type, acl); + return error; +} + +static int +xfs_set_mode(struct inode *inode, umode_t mode) +{ + int error = 0; + + if (mode != inode->i_mode) { + struct iattr iattr; + + iattr.ia_valid = ATTR_MODE | ATTR_CTIME; + iattr.ia_mode = mode; + iattr.ia_ctime = current_fs_time(inode->i_sb); + + error = -xfs_setattr_nonsize(XFS_I(inode), &iattr, XFS_ATTR_NOACL); + } + + return error; +} + +static int +xfs_acl_exists(struct inode *inode, unsigned char *name) +{ + int len = sizeof(struct xfs_acl); + + return (xfs_attr_get(XFS_I(inode), name, NULL, &len, + ATTR_ROOT|ATTR_KERNOVAL) == 0); +} + +int +posix_acl_access_exists(struct inode *inode) +{ + return xfs_acl_exists(inode, SGI_ACL_FILE); +} + +int +posix_acl_default_exists(struct inode *inode) +{ + if (!S_ISDIR(inode->i_mode)) + return 0; + return xfs_acl_exists(inode, SGI_ACL_DEFAULT); +} + +/* + * No need for i_mutex because the inode is not yet exposed to the VFS. + */ +int +xfs_inherit_acl(struct inode *inode, struct posix_acl *acl) +{ + umode_t mode = inode->i_mode; + int error = 0, inherit = 0; + + if (S_ISDIR(inode->i_mode)) { + error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, acl); + if (error) + goto out; + } + + error = posix_acl_create(&acl, GFP_KERNEL, &mode); + if (error < 0) + return error; + + /* + * If posix_acl_create returns a positive value we need to + * inherit a permission that can't be represented using the Unix + * mode bits and we actually need to set an ACL. + */ + if (error > 0) + inherit = 1; + + error = xfs_set_mode(inode, mode); + if (error) + goto out; + + if (inherit) + error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); + +out: + posix_acl_release(acl); + return error; +} + +int +xfs_acl_chmod(struct inode *inode) +{ + struct posix_acl *acl; + int error; + + if (S_ISLNK(inode->i_mode)) + return -EOPNOTSUPP; + + acl = xfs_get_acl(inode, ACL_TYPE_ACCESS); + if (IS_ERR(acl) || !acl) + return PTR_ERR(acl); + + error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); + if (error) + return error; + + error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); + posix_acl_release(acl); + return error; +} + +static int +xfs_xattr_acl_get(struct dentry *dentry, const char *name, + void *value, size_t size, int type) +{ + struct posix_acl *acl; + int error; + + acl = xfs_get_acl(dentry->d_inode, type); + if (IS_ERR(acl)) + return PTR_ERR(acl); + if (acl == NULL) + return -ENODATA; + + error = posix_acl_to_xattr(acl, value, size); + posix_acl_release(acl); + + return error; +} + +static int +xfs_xattr_acl_set(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags, int type) +{ + struct inode *inode = dentry->d_inode; + struct posix_acl *acl = NULL; + int error = 0; + + if (flags & XATTR_CREATE) + return -EINVAL; + if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) + return value ? -EACCES : 0; + if ((current_fsuid() != inode->i_uid) && !capable(CAP_FOWNER)) + return -EPERM; + + if (!value) + goto set_acl; + + acl = posix_acl_from_xattr(value, size); + if (!acl) { + /* + * acl_set_file(3) may request that we set default ACLs with + * zero length -- defend (gracefully) against that here. + */ + goto out; + } + if (IS_ERR(acl)) { + error = PTR_ERR(acl); + goto out; + } + + error = posix_acl_valid(acl); + if (error) + goto out_release; + + error = -EINVAL; + if (acl->a_count > XFS_ACL_MAX_ENTRIES) + goto out_release; + + if (type == ACL_TYPE_ACCESS) { + umode_t mode = inode->i_mode; + error = posix_acl_equiv_mode(acl, &mode); + + if (error <= 0) { + posix_acl_release(acl); + acl = NULL; + + if (error < 0) + return error; + } + + error = xfs_set_mode(inode, mode); + if (error) + goto out_release; + } + + set_acl: + error = xfs_set_acl(inode, type, acl); + out_release: + posix_acl_release(acl); + out: + return error; +} + +const struct xattr_handler xfs_xattr_acl_access_handler = { + .prefix = POSIX_ACL_XATTR_ACCESS, + .flags = ACL_TYPE_ACCESS, + .get = xfs_xattr_acl_get, + .set = xfs_xattr_acl_set, +}; + +const struct xattr_handler xfs_xattr_acl_default_handler = { + .prefix = POSIX_ACL_XATTR_DEFAULT, + .flags = ACL_TYPE_DEFAULT, + .get = xfs_xattr_acl_get, + .set = xfs_xattr_acl_set, +}; diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c new file mode 100644 index 000000000000..63e971e2b837 --- /dev/null +++ b/fs/xfs/xfs_aops.c @@ -0,0 +1,1499 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_trans.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_alloc.h" +#include "xfs_error.h" +#include "xfs_rw.h" +#include "xfs_iomap.h" +#include "xfs_vnodeops.h" +#include "xfs_trace.h" +#include "xfs_bmap.h" +#include +#include +#include +#include + + +/* + * Prime number of hash buckets since address is used as the key. + */ +#define NVSYNC 37 +#define to_ioend_wq(v) (&xfs_ioend_wq[((unsigned long)v) % NVSYNC]) +static wait_queue_head_t xfs_ioend_wq[NVSYNC]; + +void __init +xfs_ioend_init(void) +{ + int i; + + for (i = 0; i < NVSYNC; i++) + init_waitqueue_head(&xfs_ioend_wq[i]); +} + +void +xfs_ioend_wait( + xfs_inode_t *ip) +{ + wait_queue_head_t *wq = to_ioend_wq(ip); + + wait_event(*wq, (atomic_read(&ip->i_iocount) == 0)); +} + +STATIC void +xfs_ioend_wake( + xfs_inode_t *ip) +{ + if (atomic_dec_and_test(&ip->i_iocount)) + wake_up(to_ioend_wq(ip)); +} + +void +xfs_count_page_state( + struct page *page, + int *delalloc, + int *unwritten) +{ + struct buffer_head *bh, *head; + + *delalloc = *unwritten = 0; + + bh = head = page_buffers(page); + do { + if (buffer_unwritten(bh)) + (*unwritten) = 1; + else if (buffer_delay(bh)) + (*delalloc) = 1; + } while ((bh = bh->b_this_page) != head); +} + +STATIC struct block_device * +xfs_find_bdev_for_inode( + struct inode *inode) +{ + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + + if (XFS_IS_REALTIME_INODE(ip)) + return mp->m_rtdev_targp->bt_bdev; + else + return mp->m_ddev_targp->bt_bdev; +} + +/* + * We're now finished for good with this ioend structure. + * Update the page state via the associated buffer_heads, + * release holds on the inode and bio, and finally free + * up memory. Do not use the ioend after this. + */ +STATIC void +xfs_destroy_ioend( + xfs_ioend_t *ioend) +{ + struct buffer_head *bh, *next; + struct xfs_inode *ip = XFS_I(ioend->io_inode); + + for (bh = ioend->io_buffer_head; bh; bh = next) { + next = bh->b_private; + bh->b_end_io(bh, !ioend->io_error); + } + + /* + * Volume managers supporting multiple paths can send back ENODEV + * when the final path disappears. In this case continuing to fill + * the page cache with dirty data which cannot be written out is + * evil, so prevent that. + */ + if (unlikely(ioend->io_error == -ENODEV)) { + xfs_do_force_shutdown(ip->i_mount, SHUTDOWN_DEVICE_REQ, + __FILE__, __LINE__); + } + + xfs_ioend_wake(ip); + mempool_free(ioend, xfs_ioend_pool); +} + +/* + * If the end of the current ioend is beyond the current EOF, + * return the new EOF value, otherwise zero. + */ +STATIC xfs_fsize_t +xfs_ioend_new_eof( + xfs_ioend_t *ioend) +{ + xfs_inode_t *ip = XFS_I(ioend->io_inode); + xfs_fsize_t isize; + xfs_fsize_t bsize; + + bsize = ioend->io_offset + ioend->io_size; + isize = MAX(ip->i_size, ip->i_new_size); + isize = MIN(isize, bsize); + return isize > ip->i_d.di_size ? isize : 0; +} + +/* + * Update on-disk file size now that data has been written to disk. The + * current in-memory file size is i_size. If a write is beyond eof i_new_size + * will be the intended file size until i_size is updated. If this write does + * not extend all the way to the valid file size then restrict this update to + * the end of the write. + * + * This function does not block as blocking on the inode lock in IO completion + * can lead to IO completion order dependency deadlocks.. If it can't get the + * inode ilock it will return EAGAIN. Callers must handle this. + */ +STATIC int +xfs_setfilesize( + xfs_ioend_t *ioend) +{ + xfs_inode_t *ip = XFS_I(ioend->io_inode); + xfs_fsize_t isize; + + if (unlikely(ioend->io_error)) + return 0; + + if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) + return EAGAIN; + + isize = xfs_ioend_new_eof(ioend); + if (isize) { + trace_xfs_setfilesize(ip, ioend->io_offset, ioend->io_size); + ip->i_d.di_size = isize; + xfs_mark_inode_dirty(ip); + } + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + return 0; +} + +/* + * Schedule IO completion handling on the final put of an ioend. + */ +STATIC void +xfs_finish_ioend( + struct xfs_ioend *ioend) +{ + if (atomic_dec_and_test(&ioend->io_remaining)) { + if (ioend->io_type == IO_UNWRITTEN) + queue_work(xfsconvertd_workqueue, &ioend->io_work); + else + queue_work(xfsdatad_workqueue, &ioend->io_work); + } +} + +/* + * IO write completion. + */ +STATIC void +xfs_end_io( + struct work_struct *work) +{ + xfs_ioend_t *ioend = container_of(work, xfs_ioend_t, io_work); + struct xfs_inode *ip = XFS_I(ioend->io_inode); + int error = 0; + + /* + * For unwritten extents we need to issue transactions to convert a + * range to normal written extens after the data I/O has finished. + */ + if (ioend->io_type == IO_UNWRITTEN && + likely(!ioend->io_error && !XFS_FORCED_SHUTDOWN(ip->i_mount))) { + + error = xfs_iomap_write_unwritten(ip, ioend->io_offset, + ioend->io_size); + if (error) + ioend->io_error = error; + } + + /* + * We might have to update the on-disk file size after extending + * writes. + */ + error = xfs_setfilesize(ioend); + ASSERT(!error || error == EAGAIN); + + /* + * If we didn't complete processing of the ioend, requeue it to the + * tail of the workqueue for another attempt later. Otherwise destroy + * it. + */ + if (error == EAGAIN) { + atomic_inc(&ioend->io_remaining); + xfs_finish_ioend(ioend); + /* ensure we don't spin on blocked ioends */ + delay(1); + } else { + if (ioend->io_iocb) + aio_complete(ioend->io_iocb, ioend->io_result, 0); + xfs_destroy_ioend(ioend); + } +} + +/* + * Call IO completion handling in caller context on the final put of an ioend. + */ +STATIC void +xfs_finish_ioend_sync( + struct xfs_ioend *ioend) +{ + if (atomic_dec_and_test(&ioend->io_remaining)) + xfs_end_io(&ioend->io_work); +} + +/* + * Allocate and initialise an IO completion structure. + * We need to track unwritten extent write completion here initially. + * We'll need to extend this for updating the ondisk inode size later + * (vs. incore size). + */ +STATIC xfs_ioend_t * +xfs_alloc_ioend( + struct inode *inode, + unsigned int type) +{ + xfs_ioend_t *ioend; + + ioend = mempool_alloc(xfs_ioend_pool, GFP_NOFS); + + /* + * Set the count to 1 initially, which will prevent an I/O + * completion callback from happening before we have started + * all the I/O from calling the completion routine too early. + */ + atomic_set(&ioend->io_remaining, 1); + ioend->io_error = 0; + ioend->io_list = NULL; + ioend->io_type = type; + ioend->io_inode = inode; + ioend->io_buffer_head = NULL; + ioend->io_buffer_tail = NULL; + atomic_inc(&XFS_I(ioend->io_inode)->i_iocount); + ioend->io_offset = 0; + ioend->io_size = 0; + ioend->io_iocb = NULL; + ioend->io_result = 0; + + INIT_WORK(&ioend->io_work, xfs_end_io); + return ioend; +} + +STATIC int +xfs_map_blocks( + struct inode *inode, + loff_t offset, + struct xfs_bmbt_irec *imap, + int type, + int nonblocking) +{ + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + ssize_t count = 1 << inode->i_blkbits; + xfs_fileoff_t offset_fsb, end_fsb; + int error = 0; + int bmapi_flags = XFS_BMAPI_ENTIRE; + int nimaps = 1; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -XFS_ERROR(EIO); + + if (type == IO_UNWRITTEN) + bmapi_flags |= XFS_BMAPI_IGSTATE; + + if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) { + if (nonblocking) + return -XFS_ERROR(EAGAIN); + xfs_ilock(ip, XFS_ILOCK_SHARED); + } + + ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE || + (ip->i_df.if_flags & XFS_IFEXTENTS)); + ASSERT(offset <= mp->m_maxioffset); + + if (offset + count > mp->m_maxioffset) + count = mp->m_maxioffset - offset; + end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count); + offset_fsb = XFS_B_TO_FSBT(mp, offset); + error = xfs_bmapi(NULL, ip, offset_fsb, end_fsb - offset_fsb, + bmapi_flags, NULL, 0, imap, &nimaps, NULL); + xfs_iunlock(ip, XFS_ILOCK_SHARED); + + if (error) + return -XFS_ERROR(error); + + if (type == IO_DELALLOC && + (!nimaps || isnullstartblock(imap->br_startblock))) { + error = xfs_iomap_write_allocate(ip, offset, count, imap); + if (!error) + trace_xfs_map_blocks_alloc(ip, offset, count, type, imap); + return -XFS_ERROR(error); + } + +#ifdef DEBUG + if (type == IO_UNWRITTEN) { + ASSERT(nimaps); + ASSERT(imap->br_startblock != HOLESTARTBLOCK); + ASSERT(imap->br_startblock != DELAYSTARTBLOCK); + } +#endif + if (nimaps) + trace_xfs_map_blocks_found(ip, offset, count, type, imap); + return 0; +} + +STATIC int +xfs_imap_valid( + struct inode *inode, + struct xfs_bmbt_irec *imap, + xfs_off_t offset) +{ + offset >>= inode->i_blkbits; + + return offset >= imap->br_startoff && + offset < imap->br_startoff + imap->br_blockcount; +} + +/* + * BIO completion handler for buffered IO. + */ +STATIC void +xfs_end_bio( + struct bio *bio, + int error) +{ + xfs_ioend_t *ioend = bio->bi_private; + + ASSERT(atomic_read(&bio->bi_cnt) >= 1); + ioend->io_error = test_bit(BIO_UPTODATE, &bio->bi_flags) ? 0 : error; + + /* Toss bio and pass work off to an xfsdatad thread */ + bio->bi_private = NULL; + bio->bi_end_io = NULL; + bio_put(bio); + + xfs_finish_ioend(ioend); +} + +STATIC void +xfs_submit_ioend_bio( + struct writeback_control *wbc, + xfs_ioend_t *ioend, + struct bio *bio) +{ + atomic_inc(&ioend->io_remaining); + bio->bi_private = ioend; + bio->bi_end_io = xfs_end_bio; + + /* + * If the I/O is beyond EOF we mark the inode dirty immediately + * but don't update the inode size until I/O completion. + */ + if (xfs_ioend_new_eof(ioend)) + xfs_mark_inode_dirty(XFS_I(ioend->io_inode)); + + submit_bio(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE, bio); +} + +STATIC struct bio * +xfs_alloc_ioend_bio( + struct buffer_head *bh) +{ + int nvecs = bio_get_nr_vecs(bh->b_bdev); + struct bio *bio = bio_alloc(GFP_NOIO, nvecs); + + ASSERT(bio->bi_private == NULL); + bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); + bio->bi_bdev = bh->b_bdev; + return bio; +} + +STATIC void +xfs_start_buffer_writeback( + struct buffer_head *bh) +{ + ASSERT(buffer_mapped(bh)); + ASSERT(buffer_locked(bh)); + ASSERT(!buffer_delay(bh)); + ASSERT(!buffer_unwritten(bh)); + + mark_buffer_async_write(bh); + set_buffer_uptodate(bh); + clear_buffer_dirty(bh); +} + +STATIC void +xfs_start_page_writeback( + struct page *page, + int clear_dirty, + int buffers) +{ + ASSERT(PageLocked(page)); + ASSERT(!PageWriteback(page)); + if (clear_dirty) + clear_page_dirty_for_io(page); + set_page_writeback(page); + unlock_page(page); + /* If no buffers on the page are to be written, finish it here */ + if (!buffers) + end_page_writeback(page); +} + +static inline int bio_add_buffer(struct bio *bio, struct buffer_head *bh) +{ + return bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh)); +} + +/* + * Submit all of the bios for all of the ioends we have saved up, covering the + * initial writepage page and also any probed pages. + * + * Because we may have multiple ioends spanning a page, we need to start + * writeback on all the buffers before we submit them for I/O. If we mark the + * buffers as we got, then we can end up with a page that only has buffers + * marked async write and I/O complete on can occur before we mark the other + * buffers async write. + * + * The end result of this is that we trip a bug in end_page_writeback() because + * we call it twice for the one page as the code in end_buffer_async_write() + * assumes that all buffers on the page are started at the same time. + * + * The fix is two passes across the ioend list - one to start writeback on the + * buffer_heads, and then submit them for I/O on the second pass. + */ +STATIC void +xfs_submit_ioend( + struct writeback_control *wbc, + xfs_ioend_t *ioend) +{ + xfs_ioend_t *head = ioend; + xfs_ioend_t *next; + struct buffer_head *bh; + struct bio *bio; + sector_t lastblock = 0; + + /* Pass 1 - start writeback */ + do { + next = ioend->io_list; + for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) + xfs_start_buffer_writeback(bh); + } while ((ioend = next) != NULL); + + /* Pass 2 - submit I/O */ + ioend = head; + do { + next = ioend->io_list; + bio = NULL; + + for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) { + + if (!bio) { + retry: + bio = xfs_alloc_ioend_bio(bh); + } else if (bh->b_blocknr != lastblock + 1) { + xfs_submit_ioend_bio(wbc, ioend, bio); + goto retry; + } + + if (bio_add_buffer(bio, bh) != bh->b_size) { + xfs_submit_ioend_bio(wbc, ioend, bio); + goto retry; + } + + lastblock = bh->b_blocknr; + } + if (bio) + xfs_submit_ioend_bio(wbc, ioend, bio); + xfs_finish_ioend(ioend); + } while ((ioend = next) != NULL); +} + +/* + * Cancel submission of all buffer_heads so far in this endio. + * Toss the endio too. Only ever called for the initial page + * in a writepage request, so only ever one page. + */ +STATIC void +xfs_cancel_ioend( + xfs_ioend_t *ioend) +{ + xfs_ioend_t *next; + struct buffer_head *bh, *next_bh; + + do { + next = ioend->io_list; + bh = ioend->io_buffer_head; + do { + next_bh = bh->b_private; + clear_buffer_async_write(bh); + unlock_buffer(bh); + } while ((bh = next_bh) != NULL); + + xfs_ioend_wake(XFS_I(ioend->io_inode)); + mempool_free(ioend, xfs_ioend_pool); + } while ((ioend = next) != NULL); +} + +/* + * Test to see if we've been building up a completion structure for + * earlier buffers -- if so, we try to append to this ioend if we + * can, otherwise we finish off any current ioend and start another. + * Return true if we've finished the given ioend. + */ +STATIC void +xfs_add_to_ioend( + struct inode *inode, + struct buffer_head *bh, + xfs_off_t offset, + unsigned int type, + xfs_ioend_t **result, + int need_ioend) +{ + xfs_ioend_t *ioend = *result; + + if (!ioend || need_ioend || type != ioend->io_type) { + xfs_ioend_t *previous = *result; + + ioend = xfs_alloc_ioend(inode, type); + ioend->io_offset = offset; + ioend->io_buffer_head = bh; + ioend->io_buffer_tail = bh; + if (previous) + previous->io_list = ioend; + *result = ioend; + } else { + ioend->io_buffer_tail->b_private = bh; + ioend->io_buffer_tail = bh; + } + + bh->b_private = NULL; + ioend->io_size += bh->b_size; +} + +STATIC void +xfs_map_buffer( + struct inode *inode, + struct buffer_head *bh, + struct xfs_bmbt_irec *imap, + xfs_off_t offset) +{ + sector_t bn; + struct xfs_mount *m = XFS_I(inode)->i_mount; + xfs_off_t iomap_offset = XFS_FSB_TO_B(m, imap->br_startoff); + xfs_daddr_t iomap_bn = xfs_fsb_to_db(XFS_I(inode), imap->br_startblock); + + ASSERT(imap->br_startblock != HOLESTARTBLOCK); + ASSERT(imap->br_startblock != DELAYSTARTBLOCK); + + bn = (iomap_bn >> (inode->i_blkbits - BBSHIFT)) + + ((offset - iomap_offset) >> inode->i_blkbits); + + ASSERT(bn || XFS_IS_REALTIME_INODE(XFS_I(inode))); + + bh->b_blocknr = bn; + set_buffer_mapped(bh); +} + +STATIC void +xfs_map_at_offset( + struct inode *inode, + struct buffer_head *bh, + struct xfs_bmbt_irec *imap, + xfs_off_t offset) +{ + ASSERT(imap->br_startblock != HOLESTARTBLOCK); + ASSERT(imap->br_startblock != DELAYSTARTBLOCK); + + xfs_map_buffer(inode, bh, imap, offset); + set_buffer_mapped(bh); + clear_buffer_delay(bh); + clear_buffer_unwritten(bh); +} + +/* + * Test if a given page is suitable for writing as part of an unwritten + * or delayed allocate extent. + */ +STATIC int +xfs_is_delayed_page( + struct page *page, + unsigned int type) +{ + if (PageWriteback(page)) + return 0; + + if (page->mapping && page_has_buffers(page)) { + struct buffer_head *bh, *head; + int acceptable = 0; + + bh = head = page_buffers(page); + do { + if (buffer_unwritten(bh)) + acceptable = (type == IO_UNWRITTEN); + else if (buffer_delay(bh)) + acceptable = (type == IO_DELALLOC); + else if (buffer_dirty(bh) && buffer_mapped(bh)) + acceptable = (type == IO_OVERWRITE); + else + break; + } while ((bh = bh->b_this_page) != head); + + if (acceptable) + return 1; + } + + return 0; +} + +/* + * Allocate & map buffers for page given the extent map. Write it out. + * except for the original page of a writepage, this is called on + * delalloc/unwritten pages only, for the original page it is possible + * that the page has no mapping at all. + */ +STATIC int +xfs_convert_page( + struct inode *inode, + struct page *page, + loff_t tindex, + struct xfs_bmbt_irec *imap, + xfs_ioend_t **ioendp, + struct writeback_control *wbc) +{ + struct buffer_head *bh, *head; + xfs_off_t end_offset; + unsigned long p_offset; + unsigned int type; + int len, page_dirty; + int count = 0, done = 0, uptodate = 1; + xfs_off_t offset = page_offset(page); + + if (page->index != tindex) + goto fail; + if (!trylock_page(page)) + goto fail; + if (PageWriteback(page)) + goto fail_unlock_page; + if (page->mapping != inode->i_mapping) + goto fail_unlock_page; + if (!xfs_is_delayed_page(page, (*ioendp)->io_type)) + goto fail_unlock_page; + + /* + * page_dirty is initially a count of buffers on the page before + * EOF and is decremented as we move each into a cleanable state. + * + * Derivation: + * + * End offset is the highest offset that this page should represent. + * If we are on the last page, (end_offset & (PAGE_CACHE_SIZE - 1)) + * will evaluate non-zero and be less than PAGE_CACHE_SIZE and + * hence give us the correct page_dirty count. On any other page, + * it will be zero and in that case we need page_dirty to be the + * count of buffers on the page. + */ + end_offset = min_t(unsigned long long, + (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, + i_size_read(inode)); + + len = 1 << inode->i_blkbits; + p_offset = min_t(unsigned long, end_offset & (PAGE_CACHE_SIZE - 1), + PAGE_CACHE_SIZE); + p_offset = p_offset ? roundup(p_offset, len) : PAGE_CACHE_SIZE; + page_dirty = p_offset / len; + + bh = head = page_buffers(page); + do { + if (offset >= end_offset) + break; + if (!buffer_uptodate(bh)) + uptodate = 0; + if (!(PageUptodate(page) || buffer_uptodate(bh))) { + done = 1; + continue; + } + + if (buffer_unwritten(bh) || buffer_delay(bh) || + buffer_mapped(bh)) { + if (buffer_unwritten(bh)) + type = IO_UNWRITTEN; + else if (buffer_delay(bh)) + type = IO_DELALLOC; + else + type = IO_OVERWRITE; + + if (!xfs_imap_valid(inode, imap, offset)) { + done = 1; + continue; + } + + lock_buffer(bh); + if (type != IO_OVERWRITE) + xfs_map_at_offset(inode, bh, imap, offset); + xfs_add_to_ioend(inode, bh, offset, type, + ioendp, done); + + page_dirty--; + count++; + } else { + done = 1; + } + } while (offset += len, (bh = bh->b_this_page) != head); + + if (uptodate && bh == head) + SetPageUptodate(page); + + if (count) { + if (--wbc->nr_to_write <= 0 && + wbc->sync_mode == WB_SYNC_NONE) + done = 1; + } + xfs_start_page_writeback(page, !page_dirty, count); + + return done; + fail_unlock_page: + unlock_page(page); + fail: + return 1; +} + +/* + * Convert & write out a cluster of pages in the same extent as defined + * by mp and following the start page. + */ +STATIC void +xfs_cluster_write( + struct inode *inode, + pgoff_t tindex, + struct xfs_bmbt_irec *imap, + xfs_ioend_t **ioendp, + struct writeback_control *wbc, + pgoff_t tlast) +{ + struct pagevec pvec; + int done = 0, i; + + pagevec_init(&pvec, 0); + while (!done && tindex <= tlast) { + unsigned len = min_t(pgoff_t, PAGEVEC_SIZE, tlast - tindex + 1); + + if (!pagevec_lookup(&pvec, inode->i_mapping, tindex, len)) + break; + + for (i = 0; i < pagevec_count(&pvec); i++) { + done = xfs_convert_page(inode, pvec.pages[i], tindex++, + imap, ioendp, wbc); + if (done) + break; + } + + pagevec_release(&pvec); + cond_resched(); + } +} + +STATIC void +xfs_vm_invalidatepage( + struct page *page, + unsigned long offset) +{ + trace_xfs_invalidatepage(page->mapping->host, page, offset); + block_invalidatepage(page, offset); +} + +/* + * If the page has delalloc buffers on it, we need to punch them out before we + * invalidate the page. If we don't, we leave a stale delalloc mapping on the + * inode that can trip a BUG() in xfs_get_blocks() later on if a direct IO read + * is done on that same region - the delalloc extent is returned when none is + * supposed to be there. + * + * We prevent this by truncating away the delalloc regions on the page before + * invalidating it. Because they are delalloc, we can do this without needing a + * transaction. Indeed - if we get ENOSPC errors, we have to be able to do this + * truncation without a transaction as there is no space left for block + * reservation (typically why we see a ENOSPC in writeback). + * + * This is not a performance critical path, so for now just do the punching a + * buffer head at a time. + */ +STATIC void +xfs_aops_discard_page( + struct page *page) +{ + struct inode *inode = page->mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct buffer_head *bh, *head; + loff_t offset = page_offset(page); + + if (!xfs_is_delayed_page(page, IO_DELALLOC)) + goto out_invalidate; + + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + goto out_invalidate; + + xfs_alert(ip->i_mount, + "page discard on page %p, inode 0x%llx, offset %llu.", + page, ip->i_ino, offset); + + xfs_ilock(ip, XFS_ILOCK_EXCL); + bh = head = page_buffers(page); + do { + int error; + xfs_fileoff_t start_fsb; + + if (!buffer_delay(bh)) + goto next_buffer; + + start_fsb = XFS_B_TO_FSBT(ip->i_mount, offset); + error = xfs_bmap_punch_delalloc_range(ip, start_fsb, 1); + if (error) { + /* something screwed, just bail */ + if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_alert(ip->i_mount, + "page discard unable to remove delalloc mapping."); + } + break; + } +next_buffer: + offset += 1 << inode->i_blkbits; + + } while ((bh = bh->b_this_page) != head); + + xfs_iunlock(ip, XFS_ILOCK_EXCL); +out_invalidate: + xfs_vm_invalidatepage(page, 0); + return; +} + +/* + * Write out a dirty page. + * + * For delalloc space on the page we need to allocate space and flush it. + * For unwritten space on the page we need to start the conversion to + * regular allocated space. + * For any other dirty buffer heads on the page we should flush them. + */ +STATIC int +xfs_vm_writepage( + struct page *page, + struct writeback_control *wbc) +{ + struct inode *inode = page->mapping->host; + struct buffer_head *bh, *head; + struct xfs_bmbt_irec imap; + xfs_ioend_t *ioend = NULL, *iohead = NULL; + loff_t offset; + unsigned int type; + __uint64_t end_offset; + pgoff_t end_index, last_index; + ssize_t len; + int err, imap_valid = 0, uptodate = 1; + int count = 0; + int nonblocking = 0; + + trace_xfs_writepage(inode, page, 0); + + ASSERT(page_has_buffers(page)); + + /* + * Refuse to write the page out if we are called from reclaim context. + * + * This avoids stack overflows when called from deeply used stacks in + * random callers for direct reclaim or memcg reclaim. We explicitly + * allow reclaim from kswapd as the stack usage there is relatively low. + * + * This should really be done by the core VM, but until that happens + * filesystems like XFS, btrfs and ext4 have to take care of this + * by themselves. + */ + if ((current->flags & (PF_MEMALLOC|PF_KSWAPD)) == PF_MEMALLOC) + goto redirty; + + /* + * Given that we do not allow direct reclaim to call us, we should + * never be called while in a filesystem transaction. + */ + if (WARN_ON(current->flags & PF_FSTRANS)) + goto redirty; + + /* Is this page beyond the end of the file? */ + offset = i_size_read(inode); + end_index = offset >> PAGE_CACHE_SHIFT; + last_index = (offset - 1) >> PAGE_CACHE_SHIFT; + if (page->index >= end_index) { + if ((page->index >= end_index + 1) || + !(i_size_read(inode) & (PAGE_CACHE_SIZE - 1))) { + unlock_page(page); + return 0; + } + } + + end_offset = min_t(unsigned long long, + (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, + offset); + len = 1 << inode->i_blkbits; + + bh = head = page_buffers(page); + offset = page_offset(page); + type = IO_OVERWRITE; + + if (wbc->sync_mode == WB_SYNC_NONE) + nonblocking = 1; + + do { + int new_ioend = 0; + + if (offset >= end_offset) + break; + if (!buffer_uptodate(bh)) + uptodate = 0; + + /* + * set_page_dirty dirties all buffers in a page, independent + * of their state. The dirty state however is entirely + * meaningless for holes (!mapped && uptodate), so skip + * buffers covering holes here. + */ + if (!buffer_mapped(bh) && buffer_uptodate(bh)) { + imap_valid = 0; + continue; + } + + if (buffer_unwritten(bh)) { + if (type != IO_UNWRITTEN) { + type = IO_UNWRITTEN; + imap_valid = 0; + } + } else if (buffer_delay(bh)) { + if (type != IO_DELALLOC) { + type = IO_DELALLOC; + imap_valid = 0; + } + } else if (buffer_uptodate(bh)) { + if (type != IO_OVERWRITE) { + type = IO_OVERWRITE; + imap_valid = 0; + } + } else { + if (PageUptodate(page)) { + ASSERT(buffer_mapped(bh)); + imap_valid = 0; + } + continue; + } + + if (imap_valid) + imap_valid = xfs_imap_valid(inode, &imap, offset); + if (!imap_valid) { + /* + * If we didn't have a valid mapping then we need to + * put the new mapping into a separate ioend structure. + * This ensures non-contiguous extents always have + * separate ioends, which is particularly important + * for unwritten extent conversion at I/O completion + * time. + */ + new_ioend = 1; + err = xfs_map_blocks(inode, offset, &imap, type, + nonblocking); + if (err) + goto error; + imap_valid = xfs_imap_valid(inode, &imap, offset); + } + if (imap_valid) { + lock_buffer(bh); + if (type != IO_OVERWRITE) + xfs_map_at_offset(inode, bh, &imap, offset); + xfs_add_to_ioend(inode, bh, offset, type, &ioend, + new_ioend); + count++; + } + + if (!iohead) + iohead = ioend; + + } while (offset += len, ((bh = bh->b_this_page) != head)); + + if (uptodate && bh == head) + SetPageUptodate(page); + + xfs_start_page_writeback(page, 1, count); + + if (ioend && imap_valid) { + xfs_off_t end_index; + + end_index = imap.br_startoff + imap.br_blockcount; + + /* to bytes */ + end_index <<= inode->i_blkbits; + + /* to pages */ + end_index = (end_index - 1) >> PAGE_CACHE_SHIFT; + + /* check against file size */ + if (end_index > last_index) + end_index = last_index; + + xfs_cluster_write(inode, page->index + 1, &imap, &ioend, + wbc, end_index); + } + + if (iohead) + xfs_submit_ioend(wbc, iohead); + + return 0; + +error: + if (iohead) + xfs_cancel_ioend(iohead); + + if (err == -EAGAIN) + goto redirty; + + xfs_aops_discard_page(page); + ClearPageUptodate(page); + unlock_page(page); + return err; + +redirty: + redirty_page_for_writepage(wbc, page); + unlock_page(page); + return 0; +} + +STATIC int +xfs_vm_writepages( + struct address_space *mapping, + struct writeback_control *wbc) +{ + xfs_iflags_clear(XFS_I(mapping->host), XFS_ITRUNCATED); + return generic_writepages(mapping, wbc); +} + +/* + * Called to move a page into cleanable state - and from there + * to be released. The page should already be clean. We always + * have buffer heads in this call. + * + * Returns 1 if the page is ok to release, 0 otherwise. + */ +STATIC int +xfs_vm_releasepage( + struct page *page, + gfp_t gfp_mask) +{ + int delalloc, unwritten; + + trace_xfs_releasepage(page->mapping->host, page, 0); + + xfs_count_page_state(page, &delalloc, &unwritten); + + if (WARN_ON(delalloc)) + return 0; + if (WARN_ON(unwritten)) + return 0; + + return try_to_free_buffers(page); +} + +STATIC int +__xfs_get_blocks( + struct inode *inode, + sector_t iblock, + struct buffer_head *bh_result, + int create, + int direct) +{ + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + xfs_fileoff_t offset_fsb, end_fsb; + int error = 0; + int lockmode = 0; + struct xfs_bmbt_irec imap; + int nimaps = 1; + xfs_off_t offset; + ssize_t size; + int new = 0; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -XFS_ERROR(EIO); + + offset = (xfs_off_t)iblock << inode->i_blkbits; + ASSERT(bh_result->b_size >= (1 << inode->i_blkbits)); + size = bh_result->b_size; + + if (!create && direct && offset >= i_size_read(inode)) + return 0; + + if (create) { + lockmode = XFS_ILOCK_EXCL; + xfs_ilock(ip, lockmode); + } else { + lockmode = xfs_ilock_map_shared(ip); + } + + ASSERT(offset <= mp->m_maxioffset); + if (offset + size > mp->m_maxioffset) + size = mp->m_maxioffset - offset; + end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + size); + offset_fsb = XFS_B_TO_FSBT(mp, offset); + + error = xfs_bmapi(NULL, ip, offset_fsb, end_fsb - offset_fsb, + XFS_BMAPI_ENTIRE, NULL, 0, &imap, &nimaps, NULL); + if (error) + goto out_unlock; + + if (create && + (!nimaps || + (imap.br_startblock == HOLESTARTBLOCK || + imap.br_startblock == DELAYSTARTBLOCK))) { + if (direct) { + error = xfs_iomap_write_direct(ip, offset, size, + &imap, nimaps); + } else { + error = xfs_iomap_write_delay(ip, offset, size, &imap); + } + if (error) + goto out_unlock; + + trace_xfs_get_blocks_alloc(ip, offset, size, 0, &imap); + } else if (nimaps) { + trace_xfs_get_blocks_found(ip, offset, size, 0, &imap); + } else { + trace_xfs_get_blocks_notfound(ip, offset, size); + goto out_unlock; + } + xfs_iunlock(ip, lockmode); + + if (imap.br_startblock != HOLESTARTBLOCK && + imap.br_startblock != DELAYSTARTBLOCK) { + /* + * For unwritten extents do not report a disk address on + * the read case (treat as if we're reading into a hole). + */ + if (create || !ISUNWRITTEN(&imap)) + xfs_map_buffer(inode, bh_result, &imap, offset); + if (create && ISUNWRITTEN(&imap)) { + if (direct) + bh_result->b_private = inode; + set_buffer_unwritten(bh_result); + } + } + + /* + * If this is a realtime file, data may be on a different device. + * to that pointed to from the buffer_head b_bdev currently. + */ + bh_result->b_bdev = xfs_find_bdev_for_inode(inode); + + /* + * If we previously allocated a block out beyond eof and we are now + * coming back to use it then we will need to flag it as new even if it + * has a disk address. + * + * With sub-block writes into unwritten extents we also need to mark + * the buffer as new so that the unwritten parts of the buffer gets + * correctly zeroed. + */ + if (create && + ((!buffer_mapped(bh_result) && !buffer_uptodate(bh_result)) || + (offset >= i_size_read(inode)) || + (new || ISUNWRITTEN(&imap)))) + set_buffer_new(bh_result); + + if (imap.br_startblock == DELAYSTARTBLOCK) { + BUG_ON(direct); + if (create) { + set_buffer_uptodate(bh_result); + set_buffer_mapped(bh_result); + set_buffer_delay(bh_result); + } + } + + /* + * If this is O_DIRECT or the mpage code calling tell them how large + * the mapping is, so that we can avoid repeated get_blocks calls. + */ + if (direct || size > (1 << inode->i_blkbits)) { + xfs_off_t mapping_size; + + mapping_size = imap.br_startoff + imap.br_blockcount - iblock; + mapping_size <<= inode->i_blkbits; + + ASSERT(mapping_size > 0); + if (mapping_size > size) + mapping_size = size; + if (mapping_size > LONG_MAX) + mapping_size = LONG_MAX; + + bh_result->b_size = mapping_size; + } + + return 0; + +out_unlock: + xfs_iunlock(ip, lockmode); + return -error; +} + +int +xfs_get_blocks( + struct inode *inode, + sector_t iblock, + struct buffer_head *bh_result, + int create) +{ + return __xfs_get_blocks(inode, iblock, bh_result, create, 0); +} + +STATIC int +xfs_get_blocks_direct( + struct inode *inode, + sector_t iblock, + struct buffer_head *bh_result, + int create) +{ + return __xfs_get_blocks(inode, iblock, bh_result, create, 1); +} + +/* + * Complete a direct I/O write request. + * + * If the private argument is non-NULL __xfs_get_blocks signals us that we + * need to issue a transaction to convert the range from unwritten to written + * extents. In case this is regular synchronous I/O we just call xfs_end_io + * to do this and we are done. But in case this was a successful AIO + * request this handler is called from interrupt context, from which we + * can't start transactions. In that case offload the I/O completion to + * the workqueues we also use for buffered I/O completion. + */ +STATIC void +xfs_end_io_direct_write( + struct kiocb *iocb, + loff_t offset, + ssize_t size, + void *private, + int ret, + bool is_async) +{ + struct xfs_ioend *ioend = iocb->private; + + /* + * blockdev_direct_IO can return an error even after the I/O + * completion handler was called. Thus we need to protect + * against double-freeing. + */ + iocb->private = NULL; + + ioend->io_offset = offset; + ioend->io_size = size; + if (private && size > 0) + ioend->io_type = IO_UNWRITTEN; + + if (is_async) { + /* + * If we are converting an unwritten extent we need to delay + * the AIO completion until after the unwrittent extent + * conversion has completed, otherwise do it ASAP. + */ + if (ioend->io_type == IO_UNWRITTEN) { + ioend->io_iocb = iocb; + ioend->io_result = ret; + } else { + aio_complete(iocb, ret, 0); + } + xfs_finish_ioend(ioend); + } else { + xfs_finish_ioend_sync(ioend); + } + + /* XXX: probably should move into the real I/O completion handler */ + inode_dio_done(ioend->io_inode); +} + +STATIC ssize_t +xfs_vm_direct_IO( + int rw, + struct kiocb *iocb, + const struct iovec *iov, + loff_t offset, + unsigned long nr_segs) +{ + struct inode *inode = iocb->ki_filp->f_mapping->host; + struct block_device *bdev = xfs_find_bdev_for_inode(inode); + ssize_t ret; + + if (rw & WRITE) { + iocb->private = xfs_alloc_ioend(inode, IO_DIRECT); + + ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, + offset, nr_segs, + xfs_get_blocks_direct, + xfs_end_io_direct_write, NULL, 0); + if (ret != -EIOCBQUEUED && iocb->private) + xfs_destroy_ioend(iocb->private); + } else { + ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, + offset, nr_segs, + xfs_get_blocks_direct, + NULL, NULL, 0); + } + + return ret; +} + +STATIC void +xfs_vm_write_failed( + struct address_space *mapping, + loff_t to) +{ + struct inode *inode = mapping->host; + + if (to > inode->i_size) { + /* + * punch out the delalloc blocks we have already allocated. We + * don't call xfs_setattr() to do this as we may be in the + * middle of a multi-iovec write and so the vfs inode->i_size + * will not match the xfs ip->i_size and so it will zero too + * much. Hence we jus truncate the page cache to zero what is + * necessary and punch the delalloc blocks directly. + */ + struct xfs_inode *ip = XFS_I(inode); + xfs_fileoff_t start_fsb; + xfs_fileoff_t end_fsb; + int error; + + truncate_pagecache(inode, to, inode->i_size); + + /* + * Check if there are any blocks that are outside of i_size + * that need to be trimmed back. + */ + start_fsb = XFS_B_TO_FSB(ip->i_mount, inode->i_size) + 1; + end_fsb = XFS_B_TO_FSB(ip->i_mount, to); + if (end_fsb <= start_fsb) + return; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_bmap_punch_delalloc_range(ip, start_fsb, + end_fsb - start_fsb); + if (error) { + /* something screwed, just bail */ + if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_alert(ip->i_mount, + "xfs_vm_write_failed: unable to clean up ino %lld", + ip->i_ino); + } + } + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } +} + +STATIC int +xfs_vm_write_begin( + struct file *file, + struct address_space *mapping, + loff_t pos, + unsigned len, + unsigned flags, + struct page **pagep, + void **fsdata) +{ + int ret; + + ret = block_write_begin(mapping, pos, len, flags | AOP_FLAG_NOFS, + pagep, xfs_get_blocks); + if (unlikely(ret)) + xfs_vm_write_failed(mapping, pos + len); + return ret; +} + +STATIC int +xfs_vm_write_end( + struct file *file, + struct address_space *mapping, + loff_t pos, + unsigned len, + unsigned copied, + struct page *page, + void *fsdata) +{ + int ret; + + ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); + if (unlikely(ret < len)) + xfs_vm_write_failed(mapping, pos + len); + return ret; +} + +STATIC sector_t +xfs_vm_bmap( + struct address_space *mapping, + sector_t block) +{ + struct inode *inode = (struct inode *)mapping->host; + struct xfs_inode *ip = XFS_I(inode); + + trace_xfs_vm_bmap(XFS_I(inode)); + xfs_ilock(ip, XFS_IOLOCK_SHARED); + xfs_flush_pages(ip, (xfs_off_t)0, -1, 0, FI_REMAPF); + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + return generic_block_bmap(mapping, block, xfs_get_blocks); +} + +STATIC int +xfs_vm_readpage( + struct file *unused, + struct page *page) +{ + return mpage_readpage(page, xfs_get_blocks); +} + +STATIC int +xfs_vm_readpages( + struct file *unused, + struct address_space *mapping, + struct list_head *pages, + unsigned nr_pages) +{ + return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks); +} + +const struct address_space_operations xfs_address_space_operations = { + .readpage = xfs_vm_readpage, + .readpages = xfs_vm_readpages, + .writepage = xfs_vm_writepage, + .writepages = xfs_vm_writepages, + .releasepage = xfs_vm_releasepage, + .invalidatepage = xfs_vm_invalidatepage, + .write_begin = xfs_vm_write_begin, + .write_end = xfs_vm_write_end, + .bmap = xfs_vm_bmap, + .direct_IO = xfs_vm_direct_IO, + .migratepage = buffer_migrate_page, + .is_partially_uptodate = block_is_partially_uptodate, + .error_remove_page = generic_error_remove_page, +}; diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h new file mode 100644 index 000000000000..71f721e1a71f --- /dev/null +++ b/fs/xfs/xfs_aops.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2005-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_AOPS_H__ +#define __XFS_AOPS_H__ + +extern struct workqueue_struct *xfsdatad_workqueue; +extern struct workqueue_struct *xfsconvertd_workqueue; +extern mempool_t *xfs_ioend_pool; + +/* + * Types of I/O for bmap clustering and I/O completion tracking. + */ +enum { + IO_DIRECT = 0, /* special case for direct I/O ioends */ + IO_DELALLOC, /* mapping covers delalloc region */ + IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */ + IO_OVERWRITE, /* mapping covers already allocated extent */ +}; + +#define XFS_IO_TYPES \ + { 0, "" }, \ + { IO_DELALLOC, "delalloc" }, \ + { IO_UNWRITTEN, "unwritten" }, \ + { IO_OVERWRITE, "overwrite" } + +/* + * xfs_ioend struct manages large extent writes for XFS. + * It can manage several multi-page bio's at once. + */ +typedef struct xfs_ioend { + struct xfs_ioend *io_list; /* next ioend in chain */ + unsigned int io_type; /* delalloc / unwritten */ + int io_error; /* I/O error code */ + atomic_t io_remaining; /* hold count */ + struct inode *io_inode; /* file being written to */ + struct buffer_head *io_buffer_head;/* buffer linked list head */ + struct buffer_head *io_buffer_tail;/* buffer linked list tail */ + size_t io_size; /* size of the extent */ + xfs_off_t io_offset; /* offset in the file */ + struct work_struct io_work; /* xfsdatad work queue */ + struct kiocb *io_iocb; + int io_result; +} xfs_ioend_t; + +extern const struct address_space_operations xfs_address_space_operations; +extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int); + +extern void xfs_ioend_init(void); +extern void xfs_ioend_wait(struct xfs_inode *); + +extern void xfs_count_page_state(struct page *, int *, int *); + +#endif /* __XFS_AOPS_H__ */ diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c new file mode 100644 index 000000000000..c57836dc778f --- /dev/null +++ b/fs/xfs/xfs_buf.c @@ -0,0 +1,1876 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "xfs_sb.h" +#include "xfs_inum.h" +#include "xfs_log.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_trace.h" + +static kmem_zone_t *xfs_buf_zone; +STATIC int xfsbufd(void *); +STATIC void xfs_buf_delwri_queue(xfs_buf_t *, int); + +static struct workqueue_struct *xfslogd_workqueue; +struct workqueue_struct *xfsdatad_workqueue; +struct workqueue_struct *xfsconvertd_workqueue; + +#ifdef XFS_BUF_LOCK_TRACKING +# define XB_SET_OWNER(bp) ((bp)->b_last_holder = current->pid) +# define XB_CLEAR_OWNER(bp) ((bp)->b_last_holder = -1) +# define XB_GET_OWNER(bp) ((bp)->b_last_holder) +#else +# define XB_SET_OWNER(bp) do { } while (0) +# define XB_CLEAR_OWNER(bp) do { } while (0) +# define XB_GET_OWNER(bp) do { } while (0) +#endif + +#define xb_to_gfp(flags) \ + ((((flags) & XBF_READ_AHEAD) ? __GFP_NORETRY : \ + ((flags) & XBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL) | __GFP_NOWARN) + +#define xb_to_km(flags) \ + (((flags) & XBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP) + +#define xfs_buf_allocate(flags) \ + kmem_zone_alloc(xfs_buf_zone, xb_to_km(flags)) +#define xfs_buf_deallocate(bp) \ + kmem_zone_free(xfs_buf_zone, (bp)); + +static inline int +xfs_buf_is_vmapped( + struct xfs_buf *bp) +{ + /* + * Return true if the buffer is vmapped. + * + * The XBF_MAPPED flag is set if the buffer should be mapped, but the + * code is clever enough to know it doesn't have to map a single page, + * so the check has to be both for XBF_MAPPED and bp->b_page_count > 1. + */ + return (bp->b_flags & XBF_MAPPED) && bp->b_page_count > 1; +} + +static inline int +xfs_buf_vmap_len( + struct xfs_buf *bp) +{ + return (bp->b_page_count * PAGE_SIZE) - bp->b_offset; +} + +/* + * xfs_buf_lru_add - add a buffer to the LRU. + * + * The LRU takes a new reference to the buffer so that it will only be freed + * once the shrinker takes the buffer off the LRU. + */ +STATIC void +xfs_buf_lru_add( + struct xfs_buf *bp) +{ + struct xfs_buftarg *btp = bp->b_target; + + spin_lock(&btp->bt_lru_lock); + if (list_empty(&bp->b_lru)) { + atomic_inc(&bp->b_hold); + list_add_tail(&bp->b_lru, &btp->bt_lru); + btp->bt_lru_nr++; + } + spin_unlock(&btp->bt_lru_lock); +} + +/* + * xfs_buf_lru_del - remove a buffer from the LRU + * + * The unlocked check is safe here because it only occurs when there are not + * b_lru_ref counts left on the inode under the pag->pag_buf_lock. it is there + * to optimise the shrinker removing the buffer from the LRU and calling + * xfs_buf_free(). i.e. it removes an unnecessary round trip on the + * bt_lru_lock. + */ +STATIC void +xfs_buf_lru_del( + struct xfs_buf *bp) +{ + struct xfs_buftarg *btp = bp->b_target; + + if (list_empty(&bp->b_lru)) + return; + + spin_lock(&btp->bt_lru_lock); + if (!list_empty(&bp->b_lru)) { + list_del_init(&bp->b_lru); + btp->bt_lru_nr--; + } + spin_unlock(&btp->bt_lru_lock); +} + +/* + * When we mark a buffer stale, we remove the buffer from the LRU and clear the + * b_lru_ref count so that the buffer is freed immediately when the buffer + * reference count falls to zero. If the buffer is already on the LRU, we need + * to remove the reference that LRU holds on the buffer. + * + * This prevents build-up of stale buffers on the LRU. + */ +void +xfs_buf_stale( + struct xfs_buf *bp) +{ + bp->b_flags |= XBF_STALE; + atomic_set(&(bp)->b_lru_ref, 0); + if (!list_empty(&bp->b_lru)) { + struct xfs_buftarg *btp = bp->b_target; + + spin_lock(&btp->bt_lru_lock); + if (!list_empty(&bp->b_lru)) { + list_del_init(&bp->b_lru); + btp->bt_lru_nr--; + atomic_dec(&bp->b_hold); + } + spin_unlock(&btp->bt_lru_lock); + } + ASSERT(atomic_read(&bp->b_hold) >= 1); +} + +STATIC void +_xfs_buf_initialize( + xfs_buf_t *bp, + xfs_buftarg_t *target, + xfs_off_t range_base, + size_t range_length, + xfs_buf_flags_t flags) +{ + /* + * We don't want certain flags to appear in b_flags. + */ + flags &= ~(XBF_LOCK|XBF_MAPPED|XBF_DONT_BLOCK|XBF_READ_AHEAD); + + memset(bp, 0, sizeof(xfs_buf_t)); + atomic_set(&bp->b_hold, 1); + atomic_set(&bp->b_lru_ref, 1); + init_completion(&bp->b_iowait); + INIT_LIST_HEAD(&bp->b_lru); + INIT_LIST_HEAD(&bp->b_list); + RB_CLEAR_NODE(&bp->b_rbnode); + sema_init(&bp->b_sema, 0); /* held, no waiters */ + XB_SET_OWNER(bp); + bp->b_target = target; + bp->b_file_offset = range_base; + /* + * Set buffer_length and count_desired to the same value initially. + * I/O routines should use count_desired, which will be the same in + * most cases but may be reset (e.g. XFS recovery). + */ + bp->b_buffer_length = bp->b_count_desired = range_length; + bp->b_flags = flags; + bp->b_bn = XFS_BUF_DADDR_NULL; + atomic_set(&bp->b_pin_count, 0); + init_waitqueue_head(&bp->b_waiters); + + XFS_STATS_INC(xb_create); + + trace_xfs_buf_init(bp, _RET_IP_); +} + +/* + * Allocate a page array capable of holding a specified number + * of pages, and point the page buf at it. + */ +STATIC int +_xfs_buf_get_pages( + xfs_buf_t *bp, + int page_count, + xfs_buf_flags_t flags) +{ + /* Make sure that we have a page list */ + if (bp->b_pages == NULL) { + bp->b_offset = xfs_buf_poff(bp->b_file_offset); + bp->b_page_count = page_count; + if (page_count <= XB_PAGES) { + bp->b_pages = bp->b_page_array; + } else { + bp->b_pages = kmem_alloc(sizeof(struct page *) * + page_count, xb_to_km(flags)); + if (bp->b_pages == NULL) + return -ENOMEM; + } + memset(bp->b_pages, 0, sizeof(struct page *) * page_count); + } + return 0; +} + +/* + * Frees b_pages if it was allocated. + */ +STATIC void +_xfs_buf_free_pages( + xfs_buf_t *bp) +{ + if (bp->b_pages != bp->b_page_array) { + kmem_free(bp->b_pages); + bp->b_pages = NULL; + } +} + +/* + * Releases the specified buffer. + * + * The modification state of any associated pages is left unchanged. + * The buffer most not be on any hash - use xfs_buf_rele instead for + * hashed and refcounted buffers + */ +void +xfs_buf_free( + xfs_buf_t *bp) +{ + trace_xfs_buf_free(bp, _RET_IP_); + + ASSERT(list_empty(&bp->b_lru)); + + if (bp->b_flags & _XBF_PAGES) { + uint i; + + if (xfs_buf_is_vmapped(bp)) + vm_unmap_ram(bp->b_addr - bp->b_offset, + bp->b_page_count); + + for (i = 0; i < bp->b_page_count; i++) { + struct page *page = bp->b_pages[i]; + + __free_page(page); + } + } else if (bp->b_flags & _XBF_KMEM) + kmem_free(bp->b_addr); + _xfs_buf_free_pages(bp); + xfs_buf_deallocate(bp); +} + +/* + * Allocates all the pages for buffer in question and builds it's page list. + */ +STATIC int +xfs_buf_allocate_memory( + xfs_buf_t *bp, + uint flags) +{ + size_t size = bp->b_count_desired; + size_t nbytes, offset; + gfp_t gfp_mask = xb_to_gfp(flags); + unsigned short page_count, i; + xfs_off_t end; + int error; + + /* + * for buffers that are contained within a single page, just allocate + * the memory from the heap - there's no need for the complexity of + * page arrays to keep allocation down to order 0. + */ + if (bp->b_buffer_length < PAGE_SIZE) { + bp->b_addr = kmem_alloc(bp->b_buffer_length, xb_to_km(flags)); + if (!bp->b_addr) { + /* low memory - use alloc_page loop instead */ + goto use_alloc_page; + } + + if (((unsigned long)(bp->b_addr + bp->b_buffer_length - 1) & + PAGE_MASK) != + ((unsigned long)bp->b_addr & PAGE_MASK)) { + /* b_addr spans two pages - use alloc_page instead */ + kmem_free(bp->b_addr); + bp->b_addr = NULL; + goto use_alloc_page; + } + bp->b_offset = offset_in_page(bp->b_addr); + bp->b_pages = bp->b_page_array; + bp->b_pages[0] = virt_to_page(bp->b_addr); + bp->b_page_count = 1; + bp->b_flags |= XBF_MAPPED | _XBF_KMEM; + return 0; + } + +use_alloc_page: + end = bp->b_file_offset + bp->b_buffer_length; + page_count = xfs_buf_btoc(end) - xfs_buf_btoct(bp->b_file_offset); + error = _xfs_buf_get_pages(bp, page_count, flags); + if (unlikely(error)) + return error; + + offset = bp->b_offset; + bp->b_flags |= _XBF_PAGES; + + for (i = 0; i < bp->b_page_count; i++) { + struct page *page; + uint retries = 0; +retry: + page = alloc_page(gfp_mask); + if (unlikely(page == NULL)) { + if (flags & XBF_READ_AHEAD) { + bp->b_page_count = i; + error = ENOMEM; + goto out_free_pages; + } + + /* + * This could deadlock. + * + * But until all the XFS lowlevel code is revamped to + * handle buffer allocation failures we can't do much. + */ + if (!(++retries % 100)) + xfs_err(NULL, + "possible memory allocation deadlock in %s (mode:0x%x)", + __func__, gfp_mask); + + XFS_STATS_INC(xb_page_retries); + congestion_wait(BLK_RW_ASYNC, HZ/50); + goto retry; + } + + XFS_STATS_INC(xb_page_found); + + nbytes = min_t(size_t, size, PAGE_SIZE - offset); + size -= nbytes; + bp->b_pages[i] = page; + offset = 0; + } + return 0; + +out_free_pages: + for (i = 0; i < bp->b_page_count; i++) + __free_page(bp->b_pages[i]); + return error; +} + +/* + * Map buffer into kernel address-space if necessary. + */ +STATIC int +_xfs_buf_map_pages( + xfs_buf_t *bp, + uint flags) +{ + ASSERT(bp->b_flags & _XBF_PAGES); + if (bp->b_page_count == 1) { + /* A single page buffer is always mappable */ + bp->b_addr = page_address(bp->b_pages[0]) + bp->b_offset; + bp->b_flags |= XBF_MAPPED; + } else if (flags & XBF_MAPPED) { + int retried = 0; + + do { + bp->b_addr = vm_map_ram(bp->b_pages, bp->b_page_count, + -1, PAGE_KERNEL); + if (bp->b_addr) + break; + vm_unmap_aliases(); + } while (retried++ <= 1); + + if (!bp->b_addr) + return -ENOMEM; + bp->b_addr += bp->b_offset; + bp->b_flags |= XBF_MAPPED; + } + + return 0; +} + +/* + * Finding and Reading Buffers + */ + +/* + * Look up, and creates if absent, a lockable buffer for + * a given range of an inode. The buffer is returned + * locked. If other overlapping buffers exist, they are + * released before the new buffer is created and locked, + * which may imply that this call will block until those buffers + * are unlocked. No I/O is implied by this call. + */ +xfs_buf_t * +_xfs_buf_find( + xfs_buftarg_t *btp, /* block device target */ + xfs_off_t ioff, /* starting offset of range */ + size_t isize, /* length of range */ + xfs_buf_flags_t flags, + xfs_buf_t *new_bp) +{ + xfs_off_t range_base; + size_t range_length; + struct xfs_perag *pag; + struct rb_node **rbp; + struct rb_node *parent; + xfs_buf_t *bp; + + range_base = (ioff << BBSHIFT); + range_length = (isize << BBSHIFT); + + /* Check for IOs smaller than the sector size / not sector aligned */ + ASSERT(!(range_length < (1 << btp->bt_sshift))); + ASSERT(!(range_base & (xfs_off_t)btp->bt_smask)); + + /* get tree root */ + pag = xfs_perag_get(btp->bt_mount, + xfs_daddr_to_agno(btp->bt_mount, ioff)); + + /* walk tree */ + spin_lock(&pag->pag_buf_lock); + rbp = &pag->pag_buf_tree.rb_node; + parent = NULL; + bp = NULL; + while (*rbp) { + parent = *rbp; + bp = rb_entry(parent, struct xfs_buf, b_rbnode); + + if (range_base < bp->b_file_offset) + rbp = &(*rbp)->rb_left; + else if (range_base > bp->b_file_offset) + rbp = &(*rbp)->rb_right; + else { + /* + * found a block offset match. If the range doesn't + * match, the only way this is allowed is if the buffer + * in the cache is stale and the transaction that made + * it stale has not yet committed. i.e. we are + * reallocating a busy extent. Skip this buffer and + * continue searching to the right for an exact match. + */ + if (bp->b_buffer_length != range_length) { + ASSERT(bp->b_flags & XBF_STALE); + rbp = &(*rbp)->rb_right; + continue; + } + atomic_inc(&bp->b_hold); + goto found; + } + } + + /* No match found */ + if (new_bp) { + _xfs_buf_initialize(new_bp, btp, range_base, + range_length, flags); + rb_link_node(&new_bp->b_rbnode, parent, rbp); + rb_insert_color(&new_bp->b_rbnode, &pag->pag_buf_tree); + /* the buffer keeps the perag reference until it is freed */ + new_bp->b_pag = pag; + spin_unlock(&pag->pag_buf_lock); + } else { + XFS_STATS_INC(xb_miss_locked); + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); + } + return new_bp; + +found: + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); + + if (!xfs_buf_trylock(bp)) { + if (flags & XBF_TRYLOCK) { + xfs_buf_rele(bp); + XFS_STATS_INC(xb_busy_locked); + return NULL; + } + xfs_buf_lock(bp); + XFS_STATS_INC(xb_get_locked_waited); + } + + /* + * if the buffer is stale, clear all the external state associated with + * it. We need to keep flags such as how we allocated the buffer memory + * intact here. + */ + if (bp->b_flags & XBF_STALE) { + ASSERT((bp->b_flags & _XBF_DELWRI_Q) == 0); + bp->b_flags &= XBF_MAPPED | _XBF_KMEM | _XBF_PAGES; + } + + trace_xfs_buf_find(bp, flags, _RET_IP_); + XFS_STATS_INC(xb_get_locked); + return bp; +} + +/* + * Assembles a buffer covering the specified range. + * Storage in memory for all portions of the buffer will be allocated, + * although backing storage may not be. + */ +xfs_buf_t * +xfs_buf_get( + xfs_buftarg_t *target,/* target for buffer */ + xfs_off_t ioff, /* starting offset of range */ + size_t isize, /* length of range */ + xfs_buf_flags_t flags) +{ + xfs_buf_t *bp, *new_bp; + int error = 0; + + new_bp = xfs_buf_allocate(flags); + if (unlikely(!new_bp)) + return NULL; + + bp = _xfs_buf_find(target, ioff, isize, flags, new_bp); + if (bp == new_bp) { + error = xfs_buf_allocate_memory(bp, flags); + if (error) + goto no_buffer; + } else { + xfs_buf_deallocate(new_bp); + if (unlikely(bp == NULL)) + return NULL; + } + + if (!(bp->b_flags & XBF_MAPPED)) { + error = _xfs_buf_map_pages(bp, flags); + if (unlikely(error)) { + xfs_warn(target->bt_mount, + "%s: failed to map pages\n", __func__); + goto no_buffer; + } + } + + XFS_STATS_INC(xb_get); + + /* + * Always fill in the block number now, the mapped cases can do + * their own overlay of this later. + */ + bp->b_bn = ioff; + bp->b_count_desired = bp->b_buffer_length; + + trace_xfs_buf_get(bp, flags, _RET_IP_); + return bp; + + no_buffer: + if (flags & (XBF_LOCK | XBF_TRYLOCK)) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); + return NULL; +} + +STATIC int +_xfs_buf_read( + xfs_buf_t *bp, + xfs_buf_flags_t flags) +{ + int status; + + ASSERT(!(flags & (XBF_DELWRI|XBF_WRITE))); + ASSERT(bp->b_bn != XFS_BUF_DADDR_NULL); + + bp->b_flags &= ~(XBF_WRITE | XBF_ASYNC | XBF_DELWRI | XBF_READ_AHEAD); + bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD); + + status = xfs_buf_iorequest(bp); + if (status || bp->b_error || (flags & XBF_ASYNC)) + return status; + return xfs_buf_iowait(bp); +} + +xfs_buf_t * +xfs_buf_read( + xfs_buftarg_t *target, + xfs_off_t ioff, + size_t isize, + xfs_buf_flags_t flags) +{ + xfs_buf_t *bp; + + flags |= XBF_READ; + + bp = xfs_buf_get(target, ioff, isize, flags); + if (bp) { + trace_xfs_buf_read(bp, flags, _RET_IP_); + + if (!XFS_BUF_ISDONE(bp)) { + XFS_STATS_INC(xb_get_read); + _xfs_buf_read(bp, flags); + } else if (flags & XBF_ASYNC) { + /* + * Read ahead call which is already satisfied, + * drop the buffer + */ + goto no_buffer; + } else { + /* We do not want read in the flags */ + bp->b_flags &= ~XBF_READ; + } + } + + return bp; + + no_buffer: + if (flags & (XBF_LOCK | XBF_TRYLOCK)) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); + return NULL; +} + +/* + * If we are not low on memory then do the readahead in a deadlock + * safe manner. + */ +void +xfs_buf_readahead( + xfs_buftarg_t *target, + xfs_off_t ioff, + size_t isize) +{ + if (bdi_read_congested(target->bt_bdi)) + return; + + xfs_buf_read(target, ioff, isize, + XBF_TRYLOCK|XBF_ASYNC|XBF_READ_AHEAD|XBF_DONT_BLOCK); +} + +/* + * Read an uncached buffer from disk. Allocates and returns a locked + * buffer containing the disk contents or nothing. + */ +struct xfs_buf * +xfs_buf_read_uncached( + struct xfs_mount *mp, + struct xfs_buftarg *target, + xfs_daddr_t daddr, + size_t length, + int flags) +{ + xfs_buf_t *bp; + int error; + + bp = xfs_buf_get_uncached(target, length, flags); + if (!bp) + return NULL; + + /* set up the buffer for a read IO */ + XFS_BUF_SET_ADDR(bp, daddr); + XFS_BUF_READ(bp); + + xfsbdstrat(mp, bp); + error = xfs_buf_iowait(bp); + if (error || bp->b_error) { + xfs_buf_relse(bp); + return NULL; + } + return bp; +} + +xfs_buf_t * +xfs_buf_get_empty( + size_t len, + xfs_buftarg_t *target) +{ + xfs_buf_t *bp; + + bp = xfs_buf_allocate(0); + if (bp) + _xfs_buf_initialize(bp, target, 0, len, 0); + return bp; +} + +/* + * Return a buffer allocated as an empty buffer and associated to external + * memory via xfs_buf_associate_memory() back to it's empty state. + */ +void +xfs_buf_set_empty( + struct xfs_buf *bp, + size_t len) +{ + if (bp->b_pages) + _xfs_buf_free_pages(bp); + + bp->b_pages = NULL; + bp->b_page_count = 0; + bp->b_addr = NULL; + bp->b_file_offset = 0; + bp->b_buffer_length = bp->b_count_desired = len; + bp->b_bn = XFS_BUF_DADDR_NULL; + bp->b_flags &= ~XBF_MAPPED; +} + +static inline struct page * +mem_to_page( + void *addr) +{ + if ((!is_vmalloc_addr(addr))) { + return virt_to_page(addr); + } else { + return vmalloc_to_page(addr); + } +} + +int +xfs_buf_associate_memory( + xfs_buf_t *bp, + void *mem, + size_t len) +{ + int rval; + int i = 0; + unsigned long pageaddr; + unsigned long offset; + size_t buflen; + int page_count; + + pageaddr = (unsigned long)mem & PAGE_MASK; + offset = (unsigned long)mem - pageaddr; + buflen = PAGE_ALIGN(len + offset); + page_count = buflen >> PAGE_SHIFT; + + /* Free any previous set of page pointers */ + if (bp->b_pages) + _xfs_buf_free_pages(bp); + + bp->b_pages = NULL; + bp->b_addr = mem; + + rval = _xfs_buf_get_pages(bp, page_count, XBF_DONT_BLOCK); + if (rval) + return rval; + + bp->b_offset = offset; + + for (i = 0; i < bp->b_page_count; i++) { + bp->b_pages[i] = mem_to_page((void *)pageaddr); + pageaddr += PAGE_SIZE; + } + + bp->b_count_desired = len; + bp->b_buffer_length = buflen; + bp->b_flags |= XBF_MAPPED; + + return 0; +} + +xfs_buf_t * +xfs_buf_get_uncached( + struct xfs_buftarg *target, + size_t len, + int flags) +{ + unsigned long page_count = PAGE_ALIGN(len) >> PAGE_SHIFT; + int error, i; + xfs_buf_t *bp; + + bp = xfs_buf_allocate(0); + if (unlikely(bp == NULL)) + goto fail; + _xfs_buf_initialize(bp, target, 0, len, 0); + + error = _xfs_buf_get_pages(bp, page_count, 0); + if (error) + goto fail_free_buf; + + for (i = 0; i < page_count; i++) { + bp->b_pages[i] = alloc_page(xb_to_gfp(flags)); + if (!bp->b_pages[i]) + goto fail_free_mem; + } + bp->b_flags |= _XBF_PAGES; + + error = _xfs_buf_map_pages(bp, XBF_MAPPED); + if (unlikely(error)) { + xfs_warn(target->bt_mount, + "%s: failed to map pages\n", __func__); + goto fail_free_mem; + } + + trace_xfs_buf_get_uncached(bp, _RET_IP_); + return bp; + + fail_free_mem: + while (--i >= 0) + __free_page(bp->b_pages[i]); + _xfs_buf_free_pages(bp); + fail_free_buf: + xfs_buf_deallocate(bp); + fail: + return NULL; +} + +/* + * Increment reference count on buffer, to hold the buffer concurrently + * with another thread which may release (free) the buffer asynchronously. + * Must hold the buffer already to call this function. + */ +void +xfs_buf_hold( + xfs_buf_t *bp) +{ + trace_xfs_buf_hold(bp, _RET_IP_); + atomic_inc(&bp->b_hold); +} + +/* + * Releases a hold on the specified buffer. If the + * the hold count is 1, calls xfs_buf_free. + */ +void +xfs_buf_rele( + xfs_buf_t *bp) +{ + struct xfs_perag *pag = bp->b_pag; + + trace_xfs_buf_rele(bp, _RET_IP_); + + if (!pag) { + ASSERT(list_empty(&bp->b_lru)); + ASSERT(RB_EMPTY_NODE(&bp->b_rbnode)); + if (atomic_dec_and_test(&bp->b_hold)) + xfs_buf_free(bp); + return; + } + + ASSERT(!RB_EMPTY_NODE(&bp->b_rbnode)); + + ASSERT(atomic_read(&bp->b_hold) > 0); + if (atomic_dec_and_lock(&bp->b_hold, &pag->pag_buf_lock)) { + if (!(bp->b_flags & XBF_STALE) && + atomic_read(&bp->b_lru_ref)) { + xfs_buf_lru_add(bp); + spin_unlock(&pag->pag_buf_lock); + } else { + xfs_buf_lru_del(bp); + ASSERT(!(bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q))); + rb_erase(&bp->b_rbnode, &pag->pag_buf_tree); + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); + xfs_buf_free(bp); + } + } +} + + +/* + * Lock a buffer object, if it is not already locked. + * + * If we come across a stale, pinned, locked buffer, we know that we are + * being asked to lock a buffer that has been reallocated. Because it is + * pinned, we know that the log has not been pushed to disk and hence it + * will still be locked. Rather than continuing to have trylock attempts + * fail until someone else pushes the log, push it ourselves before + * returning. This means that the xfsaild will not get stuck trying + * to push on stale inode buffers. + */ +int +xfs_buf_trylock( + struct xfs_buf *bp) +{ + int locked; + + locked = down_trylock(&bp->b_sema) == 0; + if (locked) + XB_SET_OWNER(bp); + else if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE)) + xfs_log_force(bp->b_target->bt_mount, 0); + + trace_xfs_buf_trylock(bp, _RET_IP_); + return locked; +} + +/* + * Lock a buffer object. + * + * If we come across a stale, pinned, locked buffer, we know that we + * are being asked to lock a buffer that has been reallocated. Because + * it is pinned, we know that the log has not been pushed to disk and + * hence it will still be locked. Rather than sleeping until someone + * else pushes the log, push it ourselves before trying to get the lock. + */ +void +xfs_buf_lock( + struct xfs_buf *bp) +{ + trace_xfs_buf_lock(bp, _RET_IP_); + + if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE)) + xfs_log_force(bp->b_target->bt_mount, 0); + down(&bp->b_sema); + XB_SET_OWNER(bp); + + trace_xfs_buf_lock_done(bp, _RET_IP_); +} + +/* + * Releases the lock on the buffer object. + * If the buffer is marked delwri but is not queued, do so before we + * unlock the buffer as we need to set flags correctly. We also need to + * take a reference for the delwri queue because the unlocker is going to + * drop their's and they don't know we just queued it. + */ +void +xfs_buf_unlock( + struct xfs_buf *bp) +{ + if ((bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q)) == XBF_DELWRI) { + atomic_inc(&bp->b_hold); + bp->b_flags |= XBF_ASYNC; + xfs_buf_delwri_queue(bp, 0); + } + + XB_CLEAR_OWNER(bp); + up(&bp->b_sema); + + trace_xfs_buf_unlock(bp, _RET_IP_); +} + +STATIC void +xfs_buf_wait_unpin( + xfs_buf_t *bp) +{ + DECLARE_WAITQUEUE (wait, current); + + if (atomic_read(&bp->b_pin_count) == 0) + return; + + add_wait_queue(&bp->b_waiters, &wait); + for (;;) { + set_current_state(TASK_UNINTERRUPTIBLE); + if (atomic_read(&bp->b_pin_count) == 0) + break; + io_schedule(); + } + remove_wait_queue(&bp->b_waiters, &wait); + set_current_state(TASK_RUNNING); +} + +/* + * Buffer Utility Routines + */ + +STATIC void +xfs_buf_iodone_work( + struct work_struct *work) +{ + xfs_buf_t *bp = + container_of(work, xfs_buf_t, b_iodone_work); + + if (bp->b_iodone) + (*(bp->b_iodone))(bp); + else if (bp->b_flags & XBF_ASYNC) + xfs_buf_relse(bp); +} + +void +xfs_buf_ioend( + xfs_buf_t *bp, + int schedule) +{ + trace_xfs_buf_iodone(bp, _RET_IP_); + + bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_READ_AHEAD); + if (bp->b_error == 0) + bp->b_flags |= XBF_DONE; + + if ((bp->b_iodone) || (bp->b_flags & XBF_ASYNC)) { + if (schedule) { + INIT_WORK(&bp->b_iodone_work, xfs_buf_iodone_work); + queue_work(xfslogd_workqueue, &bp->b_iodone_work); + } else { + xfs_buf_iodone_work(&bp->b_iodone_work); + } + } else { + complete(&bp->b_iowait); + } +} + +void +xfs_buf_ioerror( + xfs_buf_t *bp, + int error) +{ + ASSERT(error >= 0 && error <= 0xffff); + bp->b_error = (unsigned short)error; + trace_xfs_buf_ioerror(bp, error, _RET_IP_); +} + +int +xfs_bwrite( + struct xfs_mount *mp, + struct xfs_buf *bp) +{ + int error; + + bp->b_flags |= XBF_WRITE; + bp->b_flags &= ~(XBF_ASYNC | XBF_READ); + + xfs_buf_delwri_dequeue(bp); + xfs_bdstrat_cb(bp); + + error = xfs_buf_iowait(bp); + if (error) + xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); + xfs_buf_relse(bp); + return error; +} + +void +xfs_bdwrite( + void *mp, + struct xfs_buf *bp) +{ + trace_xfs_buf_bdwrite(bp, _RET_IP_); + + bp->b_flags &= ~XBF_READ; + bp->b_flags |= (XBF_DELWRI | XBF_ASYNC); + + xfs_buf_delwri_queue(bp, 1); +} + +/* + * Called when we want to stop a buffer from getting written or read. + * We attach the EIO error, muck with its flags, and call xfs_buf_ioend + * so that the proper iodone callbacks get called. + */ +STATIC int +xfs_bioerror( + xfs_buf_t *bp) +{ +#ifdef XFSERRORDEBUG + ASSERT(XFS_BUF_ISREAD(bp) || bp->b_iodone); +#endif + + /* + * No need to wait until the buffer is unpinned, we aren't flushing it. + */ + xfs_buf_ioerror(bp, EIO); + + /* + * We're calling xfs_buf_ioend, so delete XBF_DONE flag. + */ + XFS_BUF_UNREAD(bp); + XFS_BUF_UNDELAYWRITE(bp); + XFS_BUF_UNDONE(bp); + XFS_BUF_STALE(bp); + + xfs_buf_ioend(bp, 0); + + return EIO; +} + +/* + * Same as xfs_bioerror, except that we are releasing the buffer + * here ourselves, and avoiding the xfs_buf_ioend call. + * This is meant for userdata errors; metadata bufs come with + * iodone functions attached, so that we can track down errors. + */ +STATIC int +xfs_bioerror_relse( + struct xfs_buf *bp) +{ + int64_t fl = bp->b_flags; + /* + * No need to wait until the buffer is unpinned. + * We aren't flushing it. + * + * chunkhold expects B_DONE to be set, whether + * we actually finish the I/O or not. We don't want to + * change that interface. + */ + XFS_BUF_UNREAD(bp); + XFS_BUF_UNDELAYWRITE(bp); + XFS_BUF_DONE(bp); + XFS_BUF_STALE(bp); + bp->b_iodone = NULL; + if (!(fl & XBF_ASYNC)) { + /* + * Mark b_error and B_ERROR _both_. + * Lot's of chunkcache code assumes that. + * There's no reason to mark error for + * ASYNC buffers. + */ + xfs_buf_ioerror(bp, EIO); + XFS_BUF_FINISH_IOWAIT(bp); + } else { + xfs_buf_relse(bp); + } + + return EIO; +} + + +/* + * All xfs metadata buffers except log state machine buffers + * get this attached as their b_bdstrat callback function. + * This is so that we can catch a buffer + * after prematurely unpinning it to forcibly shutdown the filesystem. + */ +int +xfs_bdstrat_cb( + struct xfs_buf *bp) +{ + if (XFS_FORCED_SHUTDOWN(bp->b_target->bt_mount)) { + trace_xfs_bdstrat_shut(bp, _RET_IP_); + /* + * Metadata write that didn't get logged but + * written delayed anyway. These aren't associated + * with a transaction, and can be ignored. + */ + if (!bp->b_iodone && !XFS_BUF_ISREAD(bp)) + return xfs_bioerror_relse(bp); + else + return xfs_bioerror(bp); + } + + xfs_buf_iorequest(bp); + return 0; +} + +/* + * Wrapper around bdstrat so that we can stop data from going to disk in case + * we are shutting down the filesystem. Typically user data goes thru this + * path; one of the exceptions is the superblock. + */ +void +xfsbdstrat( + struct xfs_mount *mp, + struct xfs_buf *bp) +{ + if (XFS_FORCED_SHUTDOWN(mp)) { + trace_xfs_bdstrat_shut(bp, _RET_IP_); + xfs_bioerror_relse(bp); + return; + } + + xfs_buf_iorequest(bp); +} + +STATIC void +_xfs_buf_ioend( + xfs_buf_t *bp, + int schedule) +{ + if (atomic_dec_and_test(&bp->b_io_remaining) == 1) + xfs_buf_ioend(bp, schedule); +} + +STATIC void +xfs_buf_bio_end_io( + struct bio *bio, + int error) +{ + xfs_buf_t *bp = (xfs_buf_t *)bio->bi_private; + + xfs_buf_ioerror(bp, -error); + + if (!error && xfs_buf_is_vmapped(bp) && (bp->b_flags & XBF_READ)) + invalidate_kernel_vmap_range(bp->b_addr, xfs_buf_vmap_len(bp)); + + _xfs_buf_ioend(bp, 1); + bio_put(bio); +} + +STATIC void +_xfs_buf_ioapply( + xfs_buf_t *bp) +{ + int rw, map_i, total_nr_pages, nr_pages; + struct bio *bio; + int offset = bp->b_offset; + int size = bp->b_count_desired; + sector_t sector = bp->b_bn; + + total_nr_pages = bp->b_page_count; + map_i = 0; + + if (bp->b_flags & XBF_WRITE) { + if (bp->b_flags & XBF_SYNCIO) + rw = WRITE_SYNC; + else + rw = WRITE; + if (bp->b_flags & XBF_FUA) + rw |= REQ_FUA; + if (bp->b_flags & XBF_FLUSH) + rw |= REQ_FLUSH; + } else if (bp->b_flags & XBF_READ_AHEAD) { + rw = READA; + } else { + rw = READ; + } + + /* we only use the buffer cache for meta-data */ + rw |= REQ_META; + +next_chunk: + atomic_inc(&bp->b_io_remaining); + nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - BBSHIFT); + if (nr_pages > total_nr_pages) + nr_pages = total_nr_pages; + + bio = bio_alloc(GFP_NOIO, nr_pages); + bio->bi_bdev = bp->b_target->bt_bdev; + bio->bi_sector = sector; + bio->bi_end_io = xfs_buf_bio_end_io; + bio->bi_private = bp; + + + for (; size && nr_pages; nr_pages--, map_i++) { + int rbytes, nbytes = PAGE_SIZE - offset; + + if (nbytes > size) + nbytes = size; + + rbytes = bio_add_page(bio, bp->b_pages[map_i], nbytes, offset); + if (rbytes < nbytes) + break; + + offset = 0; + sector += nbytes >> BBSHIFT; + size -= nbytes; + total_nr_pages--; + } + + if (likely(bio->bi_size)) { + if (xfs_buf_is_vmapped(bp)) { + flush_kernel_vmap_range(bp->b_addr, + xfs_buf_vmap_len(bp)); + } + submit_bio(rw, bio); + if (size) + goto next_chunk; + } else { + xfs_buf_ioerror(bp, EIO); + bio_put(bio); + } +} + +int +xfs_buf_iorequest( + xfs_buf_t *bp) +{ + trace_xfs_buf_iorequest(bp, _RET_IP_); + + if (bp->b_flags & XBF_DELWRI) { + xfs_buf_delwri_queue(bp, 1); + return 0; + } + + if (bp->b_flags & XBF_WRITE) { + xfs_buf_wait_unpin(bp); + } + + xfs_buf_hold(bp); + + /* Set the count to 1 initially, this will stop an I/O + * completion callout which happens before we have started + * all the I/O from calling xfs_buf_ioend too early. + */ + atomic_set(&bp->b_io_remaining, 1); + _xfs_buf_ioapply(bp); + _xfs_buf_ioend(bp, 0); + + xfs_buf_rele(bp); + return 0; +} + +/* + * Waits for I/O to complete on the buffer supplied. + * It returns immediately if no I/O is pending. + * It returns the I/O error code, if any, or 0 if there was no error. + */ +int +xfs_buf_iowait( + xfs_buf_t *bp) +{ + trace_xfs_buf_iowait(bp, _RET_IP_); + + wait_for_completion(&bp->b_iowait); + + trace_xfs_buf_iowait_done(bp, _RET_IP_); + return bp->b_error; +} + +xfs_caddr_t +xfs_buf_offset( + xfs_buf_t *bp, + size_t offset) +{ + struct page *page; + + if (bp->b_flags & XBF_MAPPED) + return bp->b_addr + offset; + + offset += bp->b_offset; + page = bp->b_pages[offset >> PAGE_SHIFT]; + return (xfs_caddr_t)page_address(page) + (offset & (PAGE_SIZE-1)); +} + +/* + * Move data into or out of a buffer. + */ +void +xfs_buf_iomove( + xfs_buf_t *bp, /* buffer to process */ + size_t boff, /* starting buffer offset */ + size_t bsize, /* length to copy */ + void *data, /* data address */ + xfs_buf_rw_t mode) /* read/write/zero flag */ +{ + size_t bend, cpoff, csize; + struct page *page; + + bend = boff + bsize; + while (boff < bend) { + page = bp->b_pages[xfs_buf_btoct(boff + bp->b_offset)]; + cpoff = xfs_buf_poff(boff + bp->b_offset); + csize = min_t(size_t, + PAGE_SIZE-cpoff, bp->b_count_desired-boff); + + ASSERT(((csize + cpoff) <= PAGE_SIZE)); + + switch (mode) { + case XBRW_ZERO: + memset(page_address(page) + cpoff, 0, csize); + break; + case XBRW_READ: + memcpy(data, page_address(page) + cpoff, csize); + break; + case XBRW_WRITE: + memcpy(page_address(page) + cpoff, data, csize); + } + + boff += csize; + data += csize; + } +} + +/* + * Handling of buffer targets (buftargs). + */ + +/* + * Wait for any bufs with callbacks that have been submitted but have not yet + * returned. These buffers will have an elevated hold count, so wait on those + * while freeing all the buffers only held by the LRU. + */ +void +xfs_wait_buftarg( + struct xfs_buftarg *btp) +{ + struct xfs_buf *bp; + +restart: + spin_lock(&btp->bt_lru_lock); + while (!list_empty(&btp->bt_lru)) { + bp = list_first_entry(&btp->bt_lru, struct xfs_buf, b_lru); + if (atomic_read(&bp->b_hold) > 1) { + spin_unlock(&btp->bt_lru_lock); + delay(100); + goto restart; + } + /* + * clear the LRU reference count so the bufer doesn't get + * ignored in xfs_buf_rele(). + */ + atomic_set(&bp->b_lru_ref, 0); + spin_unlock(&btp->bt_lru_lock); + xfs_buf_rele(bp); + spin_lock(&btp->bt_lru_lock); + } + spin_unlock(&btp->bt_lru_lock); +} + +int +xfs_buftarg_shrink( + struct shrinker *shrink, + struct shrink_control *sc) +{ + struct xfs_buftarg *btp = container_of(shrink, + struct xfs_buftarg, bt_shrinker); + struct xfs_buf *bp; + int nr_to_scan = sc->nr_to_scan; + LIST_HEAD(dispose); + + if (!nr_to_scan) + return btp->bt_lru_nr; + + spin_lock(&btp->bt_lru_lock); + while (!list_empty(&btp->bt_lru)) { + if (nr_to_scan-- <= 0) + break; + + bp = list_first_entry(&btp->bt_lru, struct xfs_buf, b_lru); + + /* + * Decrement the b_lru_ref count unless the value is already + * zero. If the value is already zero, we need to reclaim the + * buffer, otherwise it gets another trip through the LRU. + */ + if (!atomic_add_unless(&bp->b_lru_ref, -1, 0)) { + list_move_tail(&bp->b_lru, &btp->bt_lru); + continue; + } + + /* + * remove the buffer from the LRU now to avoid needing another + * lock round trip inside xfs_buf_rele(). + */ + list_move(&bp->b_lru, &dispose); + btp->bt_lru_nr--; + } + spin_unlock(&btp->bt_lru_lock); + + while (!list_empty(&dispose)) { + bp = list_first_entry(&dispose, struct xfs_buf, b_lru); + list_del_init(&bp->b_lru); + xfs_buf_rele(bp); + } + + return btp->bt_lru_nr; +} + +void +xfs_free_buftarg( + struct xfs_mount *mp, + struct xfs_buftarg *btp) +{ + unregister_shrinker(&btp->bt_shrinker); + + xfs_flush_buftarg(btp, 1); + if (mp->m_flags & XFS_MOUNT_BARRIER) + xfs_blkdev_issue_flush(btp); + + kthread_stop(btp->bt_task); + kmem_free(btp); +} + +STATIC int +xfs_setsize_buftarg_flags( + xfs_buftarg_t *btp, + unsigned int blocksize, + unsigned int sectorsize, + int verbose) +{ + btp->bt_bsize = blocksize; + btp->bt_sshift = ffs(sectorsize) - 1; + btp->bt_smask = sectorsize - 1; + + if (set_blocksize(btp->bt_bdev, sectorsize)) { + xfs_warn(btp->bt_mount, + "Cannot set_blocksize to %u on device %s\n", + sectorsize, xfs_buf_target_name(btp)); + return EINVAL; + } + + return 0; +} + +/* + * When allocating the initial buffer target we have not yet + * read in the superblock, so don't know what sized sectors + * are being used is at this early stage. Play safe. + */ +STATIC int +xfs_setsize_buftarg_early( + xfs_buftarg_t *btp, + struct block_device *bdev) +{ + return xfs_setsize_buftarg_flags(btp, + PAGE_SIZE, bdev_logical_block_size(bdev), 0); +} + +int +xfs_setsize_buftarg( + xfs_buftarg_t *btp, + unsigned int blocksize, + unsigned int sectorsize) +{ + return xfs_setsize_buftarg_flags(btp, blocksize, sectorsize, 1); +} + +STATIC int +xfs_alloc_delwrite_queue( + xfs_buftarg_t *btp, + const char *fsname) +{ + INIT_LIST_HEAD(&btp->bt_delwrite_queue); + spin_lock_init(&btp->bt_delwrite_lock); + btp->bt_flags = 0; + btp->bt_task = kthread_run(xfsbufd, btp, "xfsbufd/%s", fsname); + if (IS_ERR(btp->bt_task)) + return PTR_ERR(btp->bt_task); + return 0; +} + +xfs_buftarg_t * +xfs_alloc_buftarg( + struct xfs_mount *mp, + struct block_device *bdev, + int external, + const char *fsname) +{ + xfs_buftarg_t *btp; + + btp = kmem_zalloc(sizeof(*btp), KM_SLEEP); + + btp->bt_mount = mp; + btp->bt_dev = bdev->bd_dev; + btp->bt_bdev = bdev; + btp->bt_bdi = blk_get_backing_dev_info(bdev); + if (!btp->bt_bdi) + goto error; + + INIT_LIST_HEAD(&btp->bt_lru); + spin_lock_init(&btp->bt_lru_lock); + if (xfs_setsize_buftarg_early(btp, bdev)) + goto error; + if (xfs_alloc_delwrite_queue(btp, fsname)) + goto error; + btp->bt_shrinker.shrink = xfs_buftarg_shrink; + btp->bt_shrinker.seeks = DEFAULT_SEEKS; + register_shrinker(&btp->bt_shrinker); + return btp; + +error: + kmem_free(btp); + return NULL; +} + + +/* + * Delayed write buffer handling + */ +STATIC void +xfs_buf_delwri_queue( + xfs_buf_t *bp, + int unlock) +{ + struct list_head *dwq = &bp->b_target->bt_delwrite_queue; + spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; + + trace_xfs_buf_delwri_queue(bp, _RET_IP_); + + ASSERT((bp->b_flags&(XBF_DELWRI|XBF_ASYNC)) == (XBF_DELWRI|XBF_ASYNC)); + + spin_lock(dwlk); + /* If already in the queue, dequeue and place at tail */ + if (!list_empty(&bp->b_list)) { + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + if (unlock) + atomic_dec(&bp->b_hold); + list_del(&bp->b_list); + } + + if (list_empty(dwq)) { + /* start xfsbufd as it is about to have something to do */ + wake_up_process(bp->b_target->bt_task); + } + + bp->b_flags |= _XBF_DELWRI_Q; + list_add_tail(&bp->b_list, dwq); + bp->b_queuetime = jiffies; + spin_unlock(dwlk); + + if (unlock) + xfs_buf_unlock(bp); +} + +void +xfs_buf_delwri_dequeue( + xfs_buf_t *bp) +{ + spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; + int dequeued = 0; + + spin_lock(dwlk); + if ((bp->b_flags & XBF_DELWRI) && !list_empty(&bp->b_list)) { + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + list_del_init(&bp->b_list); + dequeued = 1; + } + bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); + spin_unlock(dwlk); + + if (dequeued) + xfs_buf_rele(bp); + + trace_xfs_buf_delwri_dequeue(bp, _RET_IP_); +} + +/* + * If a delwri buffer needs to be pushed before it has aged out, then promote + * it to the head of the delwri queue so that it will be flushed on the next + * xfsbufd run. We do this by resetting the queuetime of the buffer to be older + * than the age currently needed to flush the buffer. Hence the next time the + * xfsbufd sees it is guaranteed to be considered old enough to flush. + */ +void +xfs_buf_delwri_promote( + struct xfs_buf *bp) +{ + struct xfs_buftarg *btp = bp->b_target; + long age = xfs_buf_age_centisecs * msecs_to_jiffies(10) + 1; + + ASSERT(bp->b_flags & XBF_DELWRI); + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + + /* + * Check the buffer age before locking the delayed write queue as we + * don't need to promote buffers that are already past the flush age. + */ + if (bp->b_queuetime < jiffies - age) + return; + bp->b_queuetime = jiffies - age; + spin_lock(&btp->bt_delwrite_lock); + list_move(&bp->b_list, &btp->bt_delwrite_queue); + spin_unlock(&btp->bt_delwrite_lock); +} + +STATIC void +xfs_buf_runall_queues( + struct workqueue_struct *queue) +{ + flush_workqueue(queue); +} + +/* + * Move as many buffers as specified to the supplied list + * idicating if we skipped any buffers to prevent deadlocks. + */ +STATIC int +xfs_buf_delwri_split( + xfs_buftarg_t *target, + struct list_head *list, + unsigned long age) +{ + xfs_buf_t *bp, *n; + struct list_head *dwq = &target->bt_delwrite_queue; + spinlock_t *dwlk = &target->bt_delwrite_lock; + int skipped = 0; + int force; + + force = test_and_clear_bit(XBT_FORCE_FLUSH, &target->bt_flags); + INIT_LIST_HEAD(list); + spin_lock(dwlk); + list_for_each_entry_safe(bp, n, dwq, b_list) { + ASSERT(bp->b_flags & XBF_DELWRI); + + if (!xfs_buf_ispinned(bp) && xfs_buf_trylock(bp)) { + if (!force && + time_before(jiffies, bp->b_queuetime + age)) { + xfs_buf_unlock(bp); + break; + } + + bp->b_flags &= ~(XBF_DELWRI | _XBF_DELWRI_Q); + bp->b_flags |= XBF_WRITE; + list_move_tail(&bp->b_list, list); + trace_xfs_buf_delwri_split(bp, _RET_IP_); + } else + skipped++; + } + spin_unlock(dwlk); + + return skipped; + +} + +/* + * Compare function is more complex than it needs to be because + * the return value is only 32 bits and we are doing comparisons + * on 64 bit values + */ +static int +xfs_buf_cmp( + void *priv, + struct list_head *a, + struct list_head *b) +{ + struct xfs_buf *ap = container_of(a, struct xfs_buf, b_list); + struct xfs_buf *bp = container_of(b, struct xfs_buf, b_list); + xfs_daddr_t diff; + + diff = ap->b_bn - bp->b_bn; + if (diff < 0) + return -1; + if (diff > 0) + return 1; + return 0; +} + +STATIC int +xfsbufd( + void *data) +{ + xfs_buftarg_t *target = (xfs_buftarg_t *)data; + + current->flags |= PF_MEMALLOC; + + set_freezable(); + + do { + long age = xfs_buf_age_centisecs * msecs_to_jiffies(10); + long tout = xfs_buf_timer_centisecs * msecs_to_jiffies(10); + struct list_head tmp; + struct blk_plug plug; + + if (unlikely(freezing(current))) { + set_bit(XBT_FORCE_SLEEP, &target->bt_flags); + refrigerator(); + } else { + clear_bit(XBT_FORCE_SLEEP, &target->bt_flags); + } + + /* sleep for a long time if there is nothing to do. */ + if (list_empty(&target->bt_delwrite_queue)) + tout = MAX_SCHEDULE_TIMEOUT; + schedule_timeout_interruptible(tout); + + xfs_buf_delwri_split(target, &tmp, age); + list_sort(NULL, &tmp, xfs_buf_cmp); + + blk_start_plug(&plug); + while (!list_empty(&tmp)) { + struct xfs_buf *bp; + bp = list_first_entry(&tmp, struct xfs_buf, b_list); + list_del_init(&bp->b_list); + xfs_bdstrat_cb(bp); + } + blk_finish_plug(&plug); + } while (!kthread_should_stop()); + + return 0; +} + +/* + * Go through all incore buffers, and release buffers if they belong to + * the given device. This is used in filesystem error handling to + * preserve the consistency of its metadata. + */ +int +xfs_flush_buftarg( + xfs_buftarg_t *target, + int wait) +{ + xfs_buf_t *bp; + int pincount = 0; + LIST_HEAD(tmp_list); + LIST_HEAD(wait_list); + struct blk_plug plug; + + xfs_buf_runall_queues(xfsconvertd_workqueue); + xfs_buf_runall_queues(xfsdatad_workqueue); + xfs_buf_runall_queues(xfslogd_workqueue); + + set_bit(XBT_FORCE_FLUSH, &target->bt_flags); + pincount = xfs_buf_delwri_split(target, &tmp_list, 0); + + /* + * Dropped the delayed write list lock, now walk the temporary list. + * All I/O is issued async and then if we need to wait for completion + * we do that after issuing all the IO. + */ + list_sort(NULL, &tmp_list, xfs_buf_cmp); + + blk_start_plug(&plug); + while (!list_empty(&tmp_list)) { + bp = list_first_entry(&tmp_list, struct xfs_buf, b_list); + ASSERT(target == bp->b_target); + list_del_init(&bp->b_list); + if (wait) { + bp->b_flags &= ~XBF_ASYNC; + list_add(&bp->b_list, &wait_list); + } + xfs_bdstrat_cb(bp); + } + blk_finish_plug(&plug); + + if (wait) { + /* Wait for IO to complete. */ + while (!list_empty(&wait_list)) { + bp = list_first_entry(&wait_list, struct xfs_buf, b_list); + + list_del_init(&bp->b_list); + xfs_buf_iowait(bp); + xfs_buf_relse(bp); + } + } + + return pincount; +} + +int __init +xfs_buf_init(void) +{ + xfs_buf_zone = kmem_zone_init_flags(sizeof(xfs_buf_t), "xfs_buf", + KM_ZONE_HWALIGN, NULL); + if (!xfs_buf_zone) + goto out; + + xfslogd_workqueue = alloc_workqueue("xfslogd", + WQ_MEM_RECLAIM | WQ_HIGHPRI, 1); + if (!xfslogd_workqueue) + goto out_free_buf_zone; + + xfsdatad_workqueue = alloc_workqueue("xfsdatad", WQ_MEM_RECLAIM, 1); + if (!xfsdatad_workqueue) + goto out_destroy_xfslogd_workqueue; + + xfsconvertd_workqueue = alloc_workqueue("xfsconvertd", + WQ_MEM_RECLAIM, 1); + if (!xfsconvertd_workqueue) + goto out_destroy_xfsdatad_workqueue; + + return 0; + + out_destroy_xfsdatad_workqueue: + destroy_workqueue(xfsdatad_workqueue); + out_destroy_xfslogd_workqueue: + destroy_workqueue(xfslogd_workqueue); + out_free_buf_zone: + kmem_zone_destroy(xfs_buf_zone); + out: + return -ENOMEM; +} + +void +xfs_buf_terminate(void) +{ + destroy_workqueue(xfsconvertd_workqueue); + destroy_workqueue(xfsdatad_workqueue); + destroy_workqueue(xfslogd_workqueue); + kmem_zone_destroy(xfs_buf_zone); +} + +#ifdef CONFIG_KDB_MODULES +struct list_head * +xfs_get_buftarg_list(void) +{ + return &xfs_buftarg_list; +} +#endif diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h new file mode 100644 index 000000000000..620972b8094d --- /dev/null +++ b/fs/xfs/xfs_buf.h @@ -0,0 +1,326 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_BUF_H__ +#define __XFS_BUF_H__ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Base types + */ + +#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL)) + +#define xfs_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE) +#define xfs_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) +#define xfs_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT) +#define xfs_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK) + +typedef enum { + XBRW_READ = 1, /* transfer into target memory */ + XBRW_WRITE = 2, /* transfer from target memory */ + XBRW_ZERO = 3, /* Zero target memory */ +} xfs_buf_rw_t; + +#define XBF_READ (1 << 0) /* buffer intended for reading from device */ +#define XBF_WRITE (1 << 1) /* buffer intended for writing to device */ +#define XBF_READ_AHEAD (1 << 2) /* asynchronous read-ahead */ +#define XBF_MAPPED (1 << 3) /* buffer mapped (b_addr valid) */ +#define XBF_ASYNC (1 << 4) /* initiator will not wait for completion */ +#define XBF_DONE (1 << 5) /* all pages in the buffer uptodate */ +#define XBF_DELWRI (1 << 6) /* buffer has dirty pages */ +#define XBF_STALE (1 << 7) /* buffer has been staled, do not find it */ + +/* I/O hints for the BIO layer */ +#define XBF_SYNCIO (1 << 10)/* treat this buffer as synchronous I/O */ +#define XBF_FUA (1 << 11)/* force cache write through mode */ +#define XBF_FLUSH (1 << 12)/* flush the disk cache before a write */ + +/* flags used only as arguments to access routines */ +#define XBF_LOCK (1 << 15)/* lock requested */ +#define XBF_TRYLOCK (1 << 16)/* lock requested, but do not wait */ +#define XBF_DONT_BLOCK (1 << 17)/* do not block in current thread */ + +/* flags used only internally */ +#define _XBF_PAGES (1 << 20)/* backed by refcounted pages */ +#define _XBF_KMEM (1 << 21)/* backed by heap memory */ +#define _XBF_DELWRI_Q (1 << 22)/* buffer on delwri queue */ + +typedef unsigned int xfs_buf_flags_t; + +#define XFS_BUF_FLAGS \ + { XBF_READ, "READ" }, \ + { XBF_WRITE, "WRITE" }, \ + { XBF_READ_AHEAD, "READ_AHEAD" }, \ + { XBF_MAPPED, "MAPPED" }, \ + { XBF_ASYNC, "ASYNC" }, \ + { XBF_DONE, "DONE" }, \ + { XBF_DELWRI, "DELWRI" }, \ + { XBF_STALE, "STALE" }, \ + { XBF_SYNCIO, "SYNCIO" }, \ + { XBF_FUA, "FUA" }, \ + { XBF_FLUSH, "FLUSH" }, \ + { XBF_LOCK, "LOCK" }, /* should never be set */\ + { XBF_TRYLOCK, "TRYLOCK" }, /* ditto */\ + { XBF_DONT_BLOCK, "DONT_BLOCK" }, /* ditto */\ + { _XBF_PAGES, "PAGES" }, \ + { _XBF_KMEM, "KMEM" }, \ + { _XBF_DELWRI_Q, "DELWRI_Q" } + +typedef enum { + XBT_FORCE_SLEEP = 0, + XBT_FORCE_FLUSH = 1, +} xfs_buftarg_flags_t; + +typedef struct xfs_buftarg { + dev_t bt_dev; + struct block_device *bt_bdev; + struct backing_dev_info *bt_bdi; + struct xfs_mount *bt_mount; + unsigned int bt_bsize; + unsigned int bt_sshift; + size_t bt_smask; + + /* per device delwri queue */ + struct task_struct *bt_task; + struct list_head bt_delwrite_queue; + spinlock_t bt_delwrite_lock; + unsigned long bt_flags; + + /* LRU control structures */ + struct shrinker bt_shrinker; + struct list_head bt_lru; + spinlock_t bt_lru_lock; + unsigned int bt_lru_nr; +} xfs_buftarg_t; + +struct xfs_buf; +typedef void (*xfs_buf_iodone_t)(struct xfs_buf *); + +#define XB_PAGES 2 + +typedef struct xfs_buf { + /* + * first cacheline holds all the fields needed for an uncontended cache + * hit to be fully processed. The semaphore straddles the cacheline + * boundary, but the counter and lock sits on the first cacheline, + * which is the only bit that is touched if we hit the semaphore + * fast-path on locking. + */ + struct rb_node b_rbnode; /* rbtree node */ + xfs_off_t b_file_offset; /* offset in file */ + size_t b_buffer_length;/* size of buffer in bytes */ + atomic_t b_hold; /* reference count */ + atomic_t b_lru_ref; /* lru reclaim ref count */ + xfs_buf_flags_t b_flags; /* status flags */ + struct semaphore b_sema; /* semaphore for lockables */ + + struct list_head b_lru; /* lru list */ + wait_queue_head_t b_waiters; /* unpin waiters */ + struct list_head b_list; + struct xfs_perag *b_pag; /* contains rbtree root */ + xfs_buftarg_t *b_target; /* buffer target (device) */ + xfs_daddr_t b_bn; /* block number for I/O */ + size_t b_count_desired;/* desired transfer size */ + void *b_addr; /* virtual address of buffer */ + struct work_struct b_iodone_work; + xfs_buf_iodone_t b_iodone; /* I/O completion function */ + struct completion b_iowait; /* queue for I/O waiters */ + void *b_fspriv; + struct xfs_trans *b_transp; + struct page **b_pages; /* array of page pointers */ + struct page *b_page_array[XB_PAGES]; /* inline pages */ + unsigned long b_queuetime; /* time buffer was queued */ + atomic_t b_pin_count; /* pin count */ + atomic_t b_io_remaining; /* #outstanding I/O requests */ + unsigned int b_page_count; /* size of page array */ + unsigned int b_offset; /* page offset in first page */ + unsigned short b_error; /* error code on I/O */ +#ifdef XFS_BUF_LOCK_TRACKING + int b_last_holder; +#endif +} xfs_buf_t; + + +/* Finding and Reading Buffers */ +extern xfs_buf_t *_xfs_buf_find(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t, xfs_buf_t *); +#define xfs_incore(buftarg,blkno,len,lockit) \ + _xfs_buf_find(buftarg, blkno ,len, lockit, NULL) + +extern xfs_buf_t *xfs_buf_get(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); +extern xfs_buf_t *xfs_buf_read(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); + +extern xfs_buf_t *xfs_buf_get_empty(size_t, xfs_buftarg_t *); +extern void xfs_buf_set_empty(struct xfs_buf *bp, size_t len); +extern xfs_buf_t *xfs_buf_get_uncached(struct xfs_buftarg *, size_t, int); +extern int xfs_buf_associate_memory(xfs_buf_t *, void *, size_t); +extern void xfs_buf_hold(xfs_buf_t *); +extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t); +struct xfs_buf *xfs_buf_read_uncached(struct xfs_mount *mp, + struct xfs_buftarg *target, + xfs_daddr_t daddr, size_t length, int flags); + +/* Releasing Buffers */ +extern void xfs_buf_free(xfs_buf_t *); +extern void xfs_buf_rele(xfs_buf_t *); + +/* Locking and Unlocking Buffers */ +extern int xfs_buf_trylock(xfs_buf_t *); +extern void xfs_buf_lock(xfs_buf_t *); +extern void xfs_buf_unlock(xfs_buf_t *); +#define xfs_buf_islocked(bp) \ + ((bp)->b_sema.count <= 0) + +/* Buffer Read and Write Routines */ +extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); +extern void xfs_bdwrite(void *mp, xfs_buf_t *bp); + +extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *); +extern int xfs_bdstrat_cb(struct xfs_buf *); + +extern void xfs_buf_ioend(xfs_buf_t *, int); +extern void xfs_buf_ioerror(xfs_buf_t *, int); +extern int xfs_buf_iorequest(xfs_buf_t *); +extern int xfs_buf_iowait(xfs_buf_t *); +extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *, + xfs_buf_rw_t); +#define xfs_buf_zero(bp, off, len) \ + xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) + +static inline int xfs_buf_geterror(xfs_buf_t *bp) +{ + return bp ? bp->b_error : ENOMEM; +} + +/* Buffer Utility Routines */ +extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); + +/* Delayed Write Buffer Routines */ +extern void xfs_buf_delwri_dequeue(xfs_buf_t *); +extern void xfs_buf_delwri_promote(xfs_buf_t *); + +/* Buffer Daemon Setup Routines */ +extern int xfs_buf_init(void); +extern void xfs_buf_terminate(void); + +static inline const char * +xfs_buf_target_name(struct xfs_buftarg *target) +{ + static char __b[BDEVNAME_SIZE]; + + return bdevname(target->bt_bdev, __b); +} + + +#define XFS_BUF_ZEROFLAGS(bp) \ + ((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI| \ + XBF_SYNCIO|XBF_FUA|XBF_FLUSH)) + +void xfs_buf_stale(struct xfs_buf *bp); +#define XFS_BUF_STALE(bp) xfs_buf_stale(bp); +#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XBF_STALE) +#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XBF_STALE) +#define XFS_BUF_SUPER_STALE(bp) do { \ + XFS_BUF_STALE(bp); \ + xfs_buf_delwri_dequeue(bp); \ + XFS_BUF_DONE(bp); \ + } while (0) + +#define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI) +#define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp) +#define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI) + +#define XFS_BUF_DONE(bp) ((bp)->b_flags |= XBF_DONE) +#define XFS_BUF_UNDONE(bp) ((bp)->b_flags &= ~XBF_DONE) +#define XFS_BUF_ISDONE(bp) ((bp)->b_flags & XBF_DONE) + +#define XFS_BUF_ASYNC(bp) ((bp)->b_flags |= XBF_ASYNC) +#define XFS_BUF_UNASYNC(bp) ((bp)->b_flags &= ~XBF_ASYNC) +#define XFS_BUF_ISASYNC(bp) ((bp)->b_flags & XBF_ASYNC) + +#define XFS_BUF_READ(bp) ((bp)->b_flags |= XBF_READ) +#define XFS_BUF_UNREAD(bp) ((bp)->b_flags &= ~XBF_READ) +#define XFS_BUF_ISREAD(bp) ((bp)->b_flags & XBF_READ) + +#define XFS_BUF_WRITE(bp) ((bp)->b_flags |= XBF_WRITE) +#define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) +#define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) + +#define XFS_BUF_ADDR(bp) ((bp)->b_bn) +#define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) +#define XFS_BUF_OFFSET(bp) ((bp)->b_file_offset) +#define XFS_BUF_SET_OFFSET(bp, off) ((bp)->b_file_offset = (off)) +#define XFS_BUF_COUNT(bp) ((bp)->b_count_desired) +#define XFS_BUF_SET_COUNT(bp, cnt) ((bp)->b_count_desired = (cnt)) +#define XFS_BUF_SIZE(bp) ((bp)->b_buffer_length) +#define XFS_BUF_SET_SIZE(bp, cnt) ((bp)->b_buffer_length = (cnt)) + +static inline void +xfs_buf_set_ref( + struct xfs_buf *bp, + int lru_ref) +{ + atomic_set(&bp->b_lru_ref, lru_ref); +} +#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) xfs_buf_set_ref(bp, ref) +#define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) + +static inline int xfs_buf_ispinned(struct xfs_buf *bp) +{ + return atomic_read(&bp->b_pin_count); +} + +#define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); + +static inline void xfs_buf_relse(xfs_buf_t *bp) +{ + xfs_buf_unlock(bp); + xfs_buf_rele(bp); +} + +/* + * Handling of buftargs. + */ +extern xfs_buftarg_t *xfs_alloc_buftarg(struct xfs_mount *, + struct block_device *, int, const char *); +extern void xfs_free_buftarg(struct xfs_mount *, struct xfs_buftarg *); +extern void xfs_wait_buftarg(xfs_buftarg_t *); +extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int); +extern int xfs_flush_buftarg(xfs_buftarg_t *, int); + +#ifdef CONFIG_KDB_MODULES +extern struct list_head *xfs_get_buftarg_list(void); +#endif + +#define xfs_getsize_buftarg(buftarg) block_size((buftarg)->bt_bdev) +#define xfs_readonly_buftarg(buftarg) bdev_read_only((buftarg)->bt_bdev) + +#define xfs_binval(buftarg) xfs_flush_buftarg(buftarg, 1) +#define XFS_bflush(buftarg) xfs_flush_buftarg(buftarg, 1) + +#endif /* __XFS_BUF_H__ */ diff --git a/fs/xfs/xfs_discard.c b/fs/xfs/xfs_discard.c new file mode 100644 index 000000000000..244e797dae32 --- /dev/null +++ b/fs/xfs/xfs_discard.c @@ -0,0 +1,222 @@ +/* + * Copyright (C) 2010 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_sb.h" +#include "xfs_inum.h" +#include "xfs_log.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_quota.h" +#include "xfs_trans.h" +#include "xfs_alloc_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_btree.h" +#include "xfs_inode.h" +#include "xfs_alloc.h" +#include "xfs_error.h" +#include "xfs_discard.h" +#include "xfs_trace.h" + +STATIC int +xfs_trim_extents( + struct xfs_mount *mp, + xfs_agnumber_t agno, + xfs_fsblock_t start, + xfs_fsblock_t len, + xfs_fsblock_t minlen, + __uint64_t *blocks_trimmed) +{ + struct block_device *bdev = mp->m_ddev_targp->bt_bdev; + struct xfs_btree_cur *cur; + struct xfs_buf *agbp; + struct xfs_perag *pag; + int error; + int i; + + pag = xfs_perag_get(mp, agno); + + error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp); + if (error || !agbp) + goto out_put_perag; + + cur = xfs_allocbt_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_CNT); + + /* + * Force out the log. This means any transactions that might have freed + * space before we took the AGF buffer lock are now on disk, and the + * volatile disk cache is flushed. + */ + xfs_log_force(mp, XFS_LOG_SYNC); + + /* + * Look up the longest btree in the AGF and start with it. + */ + error = xfs_alloc_lookup_le(cur, 0, + XFS_BUF_TO_AGF(agbp)->agf_longest, &i); + if (error) + goto out_del_cursor; + + /* + * Loop until we are done with all extents that are large + * enough to be worth discarding. + */ + while (i) { + xfs_agblock_t fbno; + xfs_extlen_t flen; + + error = xfs_alloc_get_rec(cur, &fbno, &flen, &i); + if (error) + goto out_del_cursor; + XFS_WANT_CORRUPTED_GOTO(i == 1, out_del_cursor); + ASSERT(flen <= XFS_BUF_TO_AGF(agbp)->agf_longest); + + /* + * Too small? Give up. + */ + if (flen < minlen) { + trace_xfs_discard_toosmall(mp, agno, fbno, flen); + goto out_del_cursor; + } + + /* + * If the extent is entirely outside of the range we are + * supposed to discard skip it. Do not bother to trim + * down partially overlapping ranges for now. + */ + if (XFS_AGB_TO_FSB(mp, agno, fbno) + flen < start || + XFS_AGB_TO_FSB(mp, agno, fbno) >= start + len) { + trace_xfs_discard_exclude(mp, agno, fbno, flen); + goto next_extent; + } + + /* + * If any blocks in the range are still busy, skip the + * discard and try again the next time. + */ + if (xfs_alloc_busy_search(mp, agno, fbno, flen)) { + trace_xfs_discard_busy(mp, agno, fbno, flen); + goto next_extent; + } + + trace_xfs_discard_extent(mp, agno, fbno, flen); + error = -blkdev_issue_discard(bdev, + XFS_AGB_TO_DADDR(mp, agno, fbno), + XFS_FSB_TO_BB(mp, flen), + GFP_NOFS, 0); + if (error) + goto out_del_cursor; + *blocks_trimmed += flen; + +next_extent: + error = xfs_btree_decrement(cur, 0, &i); + if (error) + goto out_del_cursor; + } + +out_del_cursor: + xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); + xfs_buf_relse(agbp); +out_put_perag: + xfs_perag_put(pag); + return error; +} + +int +xfs_ioc_trim( + struct xfs_mount *mp, + struct fstrim_range __user *urange) +{ + struct request_queue *q = mp->m_ddev_targp->bt_bdev->bd_disk->queue; + unsigned int granularity = q->limits.discard_granularity; + struct fstrim_range range; + xfs_fsblock_t start, len, minlen; + xfs_agnumber_t start_agno, end_agno, agno; + __uint64_t blocks_trimmed = 0; + int error, last_error = 0; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + if (!blk_queue_discard(q)) + return -XFS_ERROR(EOPNOTSUPP); + if (copy_from_user(&range, urange, sizeof(range))) + return -XFS_ERROR(EFAULT); + + /* + * Truncating down the len isn't actually quite correct, but using + * XFS_B_TO_FSB would mean we trivially get overflows for values + * of ULLONG_MAX or slightly lower. And ULLONG_MAX is the default + * used by the fstrim application. In the end it really doesn't + * matter as trimming blocks is an advisory interface. + */ + start = XFS_B_TO_FSBT(mp, range.start); + len = XFS_B_TO_FSBT(mp, range.len); + minlen = XFS_B_TO_FSB(mp, max_t(u64, granularity, range.minlen)); + + start_agno = XFS_FSB_TO_AGNO(mp, start); + if (start_agno >= mp->m_sb.sb_agcount) + return -XFS_ERROR(EINVAL); + + end_agno = XFS_FSB_TO_AGNO(mp, start + len); + if (end_agno >= mp->m_sb.sb_agcount) + end_agno = mp->m_sb.sb_agcount - 1; + + for (agno = start_agno; agno <= end_agno; agno++) { + error = -xfs_trim_extents(mp, agno, start, len, minlen, + &blocks_trimmed); + if (error) + last_error = error; + } + + if (last_error) + return last_error; + + range.len = XFS_FSB_TO_B(mp, blocks_trimmed); + if (copy_to_user(urange, &range, sizeof(range))) + return -XFS_ERROR(EFAULT); + return 0; +} + +int +xfs_discard_extents( + struct xfs_mount *mp, + struct list_head *list) +{ + struct xfs_busy_extent *busyp; + int error = 0; + + list_for_each_entry(busyp, list, list) { + trace_xfs_discard_extent(mp, busyp->agno, busyp->bno, + busyp->length); + + error = -blkdev_issue_discard(mp->m_ddev_targp->bt_bdev, + XFS_AGB_TO_DADDR(mp, busyp->agno, busyp->bno), + XFS_FSB_TO_BB(mp, busyp->length), + GFP_NOFS, 0); + if (error && error != EOPNOTSUPP) { + xfs_info(mp, + "discard failed for extent [0x%llu,%u], error %d", + (unsigned long long)busyp->bno, + busyp->length, + error); + return error; + } + } + + return 0; +} diff --git a/fs/xfs/xfs_discard.h b/fs/xfs/xfs_discard.h new file mode 100644 index 000000000000..344879aea646 --- /dev/null +++ b/fs/xfs/xfs_discard.h @@ -0,0 +1,10 @@ +#ifndef XFS_DISCARD_H +#define XFS_DISCARD_H 1 + +struct fstrim_range; +struct list_head; + +extern int xfs_ioc_trim(struct xfs_mount *, struct fstrim_range __user *); +extern int xfs_discard_extents(struct xfs_mount *, struct list_head *); + +#endif /* XFS_DISCARD_H */ diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c new file mode 100644 index 000000000000..db62959bed13 --- /dev/null +++ b/fs/xfs/xfs_dquot.c @@ -0,0 +1,1454 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_itable.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_trans_space.h" +#include "xfs_trans_priv.h" +#include "xfs_qm.h" +#include "xfs_trace.h" + + +/* + LOCK ORDER + + inode lock (ilock) + dquot hash-chain lock (hashlock) + xqm dquot freelist lock (freelistlock + mount's dquot list lock (mplistlock) + user dquot lock - lock ordering among dquots is based on the uid or gid + group dquot lock - similar to udquots. Between the two dquots, the udquot + has to be locked first. + pin lock - the dquot lock must be held to take this lock. + flush lock - ditto. +*/ + +#ifdef DEBUG +xfs_buftarg_t *xfs_dqerror_target; +int xfs_do_dqerror; +int xfs_dqreq_num; +int xfs_dqerror_mod = 33; +#endif + +static struct lock_class_key xfs_dquot_other_class; + +/* + * Allocate and initialize a dquot. We don't always allocate fresh memory; + * we try to reclaim a free dquot if the number of incore dquots are above + * a threshold. + * The only field inside the core that gets initialized at this point + * is the d_id field. The idea is to fill in the entire q_core + * when we read in the on disk dquot. + */ +STATIC xfs_dquot_t * +xfs_qm_dqinit( + xfs_mount_t *mp, + xfs_dqid_t id, + uint type) +{ + xfs_dquot_t *dqp; + boolean_t brandnewdquot; + + brandnewdquot = xfs_qm_dqalloc_incore(&dqp); + dqp->dq_flags = type; + dqp->q_core.d_id = cpu_to_be32(id); + dqp->q_mount = mp; + + /* + * No need to re-initialize these if this is a reclaimed dquot. + */ + if (brandnewdquot) { + INIT_LIST_HEAD(&dqp->q_freelist); + mutex_init(&dqp->q_qlock); + init_waitqueue_head(&dqp->q_pinwait); + + /* + * Because we want to use a counting completion, complete + * the flush completion once to allow a single access to + * the flush completion without blocking. + */ + init_completion(&dqp->q_flush); + complete(&dqp->q_flush); + + trace_xfs_dqinit(dqp); + } else { + /* + * Only the q_core portion was zeroed in dqreclaim_one(). + * So, we need to reset others. + */ + dqp->q_nrefs = 0; + dqp->q_blkno = 0; + INIT_LIST_HEAD(&dqp->q_mplist); + INIT_LIST_HEAD(&dqp->q_hashlist); + dqp->q_bufoffset = 0; + dqp->q_fileoffset = 0; + dqp->q_transp = NULL; + dqp->q_gdquot = NULL; + dqp->q_res_bcount = 0; + dqp->q_res_icount = 0; + dqp->q_res_rtbcount = 0; + atomic_set(&dqp->q_pincount, 0); + dqp->q_hash = NULL; + ASSERT(list_empty(&dqp->q_freelist)); + + trace_xfs_dqreuse(dqp); + } + + /* + * In either case we need to make sure group quotas have a different + * lock class than user quotas, to make sure lockdep knows we can + * locks of one of each at the same time. + */ + if (!(type & XFS_DQ_USER)) + lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class); + + /* + * log item gets initialized later + */ + return (dqp); +} + +/* + * This is called to free all the memory associated with a dquot + */ +void +xfs_qm_dqdestroy( + xfs_dquot_t *dqp) +{ + ASSERT(list_empty(&dqp->q_freelist)); + + mutex_destroy(&dqp->q_qlock); + kmem_zone_free(xfs_Gqm->qm_dqzone, dqp); + + atomic_dec(&xfs_Gqm->qm_totaldquots); +} + +/* + * This is what a 'fresh' dquot inside a dquot chunk looks like on disk. + */ +STATIC void +xfs_qm_dqinit_core( + xfs_dqid_t id, + uint type, + xfs_dqblk_t *d) +{ + /* + * Caller has zero'd the entire dquot 'chunk' already. + */ + d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); + d->dd_diskdq.d_version = XFS_DQUOT_VERSION; + d->dd_diskdq.d_id = cpu_to_be32(id); + d->dd_diskdq.d_flags = type; +} + +/* + * If default limits are in force, push them into the dquot now. + * We overwrite the dquot limits only if they are zero and this + * is not the root dquot. + */ +void +xfs_qm_adjust_dqlimits( + xfs_mount_t *mp, + xfs_disk_dquot_t *d) +{ + xfs_quotainfo_t *q = mp->m_quotainfo; + + ASSERT(d->d_id); + + if (q->qi_bsoftlimit && !d->d_blk_softlimit) + d->d_blk_softlimit = cpu_to_be64(q->qi_bsoftlimit); + if (q->qi_bhardlimit && !d->d_blk_hardlimit) + d->d_blk_hardlimit = cpu_to_be64(q->qi_bhardlimit); + if (q->qi_isoftlimit && !d->d_ino_softlimit) + d->d_ino_softlimit = cpu_to_be64(q->qi_isoftlimit); + if (q->qi_ihardlimit && !d->d_ino_hardlimit) + d->d_ino_hardlimit = cpu_to_be64(q->qi_ihardlimit); + if (q->qi_rtbsoftlimit && !d->d_rtb_softlimit) + d->d_rtb_softlimit = cpu_to_be64(q->qi_rtbsoftlimit); + if (q->qi_rtbhardlimit && !d->d_rtb_hardlimit) + d->d_rtb_hardlimit = cpu_to_be64(q->qi_rtbhardlimit); +} + +/* + * Check the limits and timers of a dquot and start or reset timers + * if necessary. + * This gets called even when quota enforcement is OFF, which makes our + * life a little less complicated. (We just don't reject any quota + * reservations in that case, when enforcement is off). + * We also return 0 as the values of the timers in Q_GETQUOTA calls, when + * enforcement's off. + * In contrast, warnings are a little different in that they don't + * 'automatically' get started when limits get exceeded. They do + * get reset to zero, however, when we find the count to be under + * the soft limit (they are only ever set non-zero via userspace). + */ +void +xfs_qm_adjust_dqtimers( + xfs_mount_t *mp, + xfs_disk_dquot_t *d) +{ + ASSERT(d->d_id); + +#ifdef DEBUG + if (d->d_blk_hardlimit) + ASSERT(be64_to_cpu(d->d_blk_softlimit) <= + be64_to_cpu(d->d_blk_hardlimit)); + if (d->d_ino_hardlimit) + ASSERT(be64_to_cpu(d->d_ino_softlimit) <= + be64_to_cpu(d->d_ino_hardlimit)); + if (d->d_rtb_hardlimit) + ASSERT(be64_to_cpu(d->d_rtb_softlimit) <= + be64_to_cpu(d->d_rtb_hardlimit)); +#endif + + if (!d->d_btimer) { + if ((d->d_blk_softlimit && + (be64_to_cpu(d->d_bcount) >= + be64_to_cpu(d->d_blk_softlimit))) || + (d->d_blk_hardlimit && + (be64_to_cpu(d->d_bcount) >= + be64_to_cpu(d->d_blk_hardlimit)))) { + d->d_btimer = cpu_to_be32(get_seconds() + + mp->m_quotainfo->qi_btimelimit); + } else { + d->d_bwarns = 0; + } + } else { + if ((!d->d_blk_softlimit || + (be64_to_cpu(d->d_bcount) < + be64_to_cpu(d->d_blk_softlimit))) && + (!d->d_blk_hardlimit || + (be64_to_cpu(d->d_bcount) < + be64_to_cpu(d->d_blk_hardlimit)))) { + d->d_btimer = 0; + } + } + + if (!d->d_itimer) { + if ((d->d_ino_softlimit && + (be64_to_cpu(d->d_icount) >= + be64_to_cpu(d->d_ino_softlimit))) || + (d->d_ino_hardlimit && + (be64_to_cpu(d->d_icount) >= + be64_to_cpu(d->d_ino_hardlimit)))) { + d->d_itimer = cpu_to_be32(get_seconds() + + mp->m_quotainfo->qi_itimelimit); + } else { + d->d_iwarns = 0; + } + } else { + if ((!d->d_ino_softlimit || + (be64_to_cpu(d->d_icount) < + be64_to_cpu(d->d_ino_softlimit))) && + (!d->d_ino_hardlimit || + (be64_to_cpu(d->d_icount) < + be64_to_cpu(d->d_ino_hardlimit)))) { + d->d_itimer = 0; + } + } + + if (!d->d_rtbtimer) { + if ((d->d_rtb_softlimit && + (be64_to_cpu(d->d_rtbcount) >= + be64_to_cpu(d->d_rtb_softlimit))) || + (d->d_rtb_hardlimit && + (be64_to_cpu(d->d_rtbcount) >= + be64_to_cpu(d->d_rtb_hardlimit)))) { + d->d_rtbtimer = cpu_to_be32(get_seconds() + + mp->m_quotainfo->qi_rtbtimelimit); + } else { + d->d_rtbwarns = 0; + } + } else { + if ((!d->d_rtb_softlimit || + (be64_to_cpu(d->d_rtbcount) < + be64_to_cpu(d->d_rtb_softlimit))) && + (!d->d_rtb_hardlimit || + (be64_to_cpu(d->d_rtbcount) < + be64_to_cpu(d->d_rtb_hardlimit)))) { + d->d_rtbtimer = 0; + } + } +} + +/* + * initialize a buffer full of dquots and log the whole thing + */ +STATIC void +xfs_qm_init_dquot_blk( + xfs_trans_t *tp, + xfs_mount_t *mp, + xfs_dqid_t id, + uint type, + xfs_buf_t *bp) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + xfs_dqblk_t *d; + int curid, i; + + ASSERT(tp); + ASSERT(xfs_buf_islocked(bp)); + + d = bp->b_addr; + + /* + * ID of the first dquot in the block - id's are zero based. + */ + curid = id - (id % q->qi_dqperchunk); + ASSERT(curid >= 0); + memset(d, 0, BBTOB(q->qi_dqchunklen)); + for (i = 0; i < q->qi_dqperchunk; i++, d++, curid++) + xfs_qm_dqinit_core(curid, type, d); + xfs_trans_dquot_buf(tp, bp, + (type & XFS_DQ_USER ? XFS_BLF_UDQUOT_BUF : + ((type & XFS_DQ_PROJ) ? XFS_BLF_PDQUOT_BUF : + XFS_BLF_GDQUOT_BUF))); + xfs_trans_log_buf(tp, bp, 0, BBTOB(q->qi_dqchunklen) - 1); +} + + + +/* + * Allocate a block and fill it with dquots. + * This is called when the bmapi finds a hole. + */ +STATIC int +xfs_qm_dqalloc( + xfs_trans_t **tpp, + xfs_mount_t *mp, + xfs_dquot_t *dqp, + xfs_inode_t *quotip, + xfs_fileoff_t offset_fsb, + xfs_buf_t **O_bpp) +{ + xfs_fsblock_t firstblock; + xfs_bmap_free_t flist; + xfs_bmbt_irec_t map; + int nmaps, error, committed; + xfs_buf_t *bp; + xfs_trans_t *tp = *tpp; + + ASSERT(tp != NULL); + + trace_xfs_dqalloc(dqp); + + /* + * Initialize the bmap freelist prior to calling bmapi code. + */ + xfs_bmap_init(&flist, &firstblock); + xfs_ilock(quotip, XFS_ILOCK_EXCL); + /* + * Return if this type of quotas is turned off while we didn't + * have an inode lock + */ + if (XFS_IS_THIS_QUOTA_OFF(dqp)) { + xfs_iunlock(quotip, XFS_ILOCK_EXCL); + return (ESRCH); + } + + xfs_trans_ijoin_ref(tp, quotip, XFS_ILOCK_EXCL); + nmaps = 1; + if ((error = xfs_bmapi(tp, quotip, + offset_fsb, XFS_DQUOT_CLUSTER_SIZE_FSB, + XFS_BMAPI_METADATA | XFS_BMAPI_WRITE, + &firstblock, + XFS_QM_DQALLOC_SPACE_RES(mp), + &map, &nmaps, &flist))) { + goto error0; + } + ASSERT(map.br_blockcount == XFS_DQUOT_CLUSTER_SIZE_FSB); + ASSERT(nmaps == 1); + ASSERT((map.br_startblock != DELAYSTARTBLOCK) && + (map.br_startblock != HOLESTARTBLOCK)); + + /* + * Keep track of the blkno to save a lookup later + */ + dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); + + /* now we can just get the buffer (there's nothing to read yet) */ + bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, + dqp->q_blkno, + mp->m_quotainfo->qi_dqchunklen, + 0); + if (!bp || (error = xfs_buf_geterror(bp))) + goto error1; + /* + * Make a chunk of dquots out of this buffer and log + * the entire thing. + */ + xfs_qm_init_dquot_blk(tp, mp, be32_to_cpu(dqp->q_core.d_id), + dqp->dq_flags & XFS_DQ_ALLTYPES, bp); + + /* + * xfs_bmap_finish() may commit the current transaction and + * start a second transaction if the freelist is not empty. + * + * Since we still want to modify this buffer, we need to + * ensure that the buffer is not released on commit of + * the first transaction and ensure the buffer is added to the + * second transaction. + * + * If there is only one transaction then don't stop the buffer + * from being released when it commits later on. + */ + + xfs_trans_bhold(tp, bp); + + if ((error = xfs_bmap_finish(tpp, &flist, &committed))) { + goto error1; + } + + if (committed) { + tp = *tpp; + xfs_trans_bjoin(tp, bp); + } else { + xfs_trans_bhold_release(tp, bp); + } + + *O_bpp = bp; + return 0; + + error1: + xfs_bmap_cancel(&flist); + error0: + xfs_iunlock(quotip, XFS_ILOCK_EXCL); + + return (error); +} + +/* + * Maps a dquot to the buffer containing its on-disk version. + * This returns a ptr to the buffer containing the on-disk dquot + * in the bpp param, and a ptr to the on-disk dquot within that buffer + */ +STATIC int +xfs_qm_dqtobp( + xfs_trans_t **tpp, + xfs_dquot_t *dqp, + xfs_disk_dquot_t **O_ddpp, + xfs_buf_t **O_bpp, + uint flags) +{ + xfs_bmbt_irec_t map; + int nmaps = 1, error; + xfs_buf_t *bp; + xfs_inode_t *quotip = XFS_DQ_TO_QIP(dqp); + xfs_mount_t *mp = dqp->q_mount; + xfs_disk_dquot_t *ddq; + xfs_dqid_t id = be32_to_cpu(dqp->q_core.d_id); + xfs_trans_t *tp = (tpp ? *tpp : NULL); + + dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk; + + xfs_ilock(quotip, XFS_ILOCK_SHARED); + if (XFS_IS_THIS_QUOTA_OFF(dqp)) { + /* + * Return if this type of quotas is turned off while we + * didn't have the quota inode lock. + */ + xfs_iunlock(quotip, XFS_ILOCK_SHARED); + return ESRCH; + } + + /* + * Find the block map; no allocations yet + */ + error = xfs_bmapi(NULL, quotip, dqp->q_fileoffset, + XFS_DQUOT_CLUSTER_SIZE_FSB, XFS_BMAPI_METADATA, + NULL, 0, &map, &nmaps, NULL); + + xfs_iunlock(quotip, XFS_ILOCK_SHARED); + if (error) + return error; + + ASSERT(nmaps == 1); + ASSERT(map.br_blockcount == 1); + + /* + * Offset of dquot in the (fixed sized) dquot chunk. + */ + dqp->q_bufoffset = (id % mp->m_quotainfo->qi_dqperchunk) * + sizeof(xfs_dqblk_t); + + ASSERT(map.br_startblock != DELAYSTARTBLOCK); + if (map.br_startblock == HOLESTARTBLOCK) { + /* + * We don't allocate unless we're asked to + */ + if (!(flags & XFS_QMOPT_DQALLOC)) + return ENOENT; + + ASSERT(tp); + error = xfs_qm_dqalloc(tpp, mp, dqp, quotip, + dqp->q_fileoffset, &bp); + if (error) + return error; + tp = *tpp; + } else { + trace_xfs_dqtobp_read(dqp); + + /* + * store the blkno etc so that we don't have to do the + * mapping all the time + */ + dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); + + error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, + dqp->q_blkno, + mp->m_quotainfo->qi_dqchunklen, + 0, &bp); + if (error || !bp) + return XFS_ERROR(error); + } + + ASSERT(xfs_buf_islocked(bp)); + + /* + * calculate the location of the dquot inside the buffer. + */ + ddq = bp->b_addr + dqp->q_bufoffset; + + /* + * A simple sanity check in case we got a corrupted dquot... + */ + error = xfs_qm_dqcheck(mp, ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES, + flags & (XFS_QMOPT_DQREPAIR|XFS_QMOPT_DOWARN), + "dqtobp"); + if (error) { + if (!(flags & XFS_QMOPT_DQREPAIR)) { + xfs_trans_brelse(tp, bp); + return XFS_ERROR(EIO); + } + } + + *O_bpp = bp; + *O_ddpp = ddq; + + return (0); +} + + +/* + * Read in the ondisk dquot using dqtobp() then copy it to an incore version, + * and release the buffer immediately. + * + */ +/* ARGSUSED */ +STATIC int +xfs_qm_dqread( + xfs_trans_t **tpp, + xfs_dqid_t id, + xfs_dquot_t *dqp, /* dquot to get filled in */ + uint flags) +{ + xfs_disk_dquot_t *ddqp; + xfs_buf_t *bp; + int error; + xfs_trans_t *tp; + + ASSERT(tpp); + + trace_xfs_dqread(dqp); + + /* + * get a pointer to the on-disk dquot and the buffer containing it + * dqp already knows its own type (GROUP/USER). + */ + if ((error = xfs_qm_dqtobp(tpp, dqp, &ddqp, &bp, flags))) { + return (error); + } + tp = *tpp; + + /* copy everything from disk dquot to the incore dquot */ + memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t)); + ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); + xfs_qm_dquot_logitem_init(dqp); + + /* + * Reservation counters are defined as reservation plus current usage + * to avoid having to add every time. + */ + dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount); + dqp->q_res_icount = be64_to_cpu(ddqp->d_icount); + dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount); + + /* Mark the buf so that this will stay incore a little longer */ + XFS_BUF_SET_VTYPE_REF(bp, B_FS_DQUOT, XFS_DQUOT_REF); + + /* + * We got the buffer with a xfs_trans_read_buf() (in dqtobp()) + * So we need to release with xfs_trans_brelse(). + * The strategy here is identical to that of inodes; we lock + * the dquot in xfs_qm_dqget() before making it accessible to + * others. This is because dquots, like inodes, need a good level of + * concurrency, and we don't want to take locks on the entire buffers + * for dquot accesses. + * Note also that the dquot buffer may even be dirty at this point, if + * this particular dquot was repaired. We still aren't afraid to + * brelse it because we have the changes incore. + */ + ASSERT(xfs_buf_islocked(bp)); + xfs_trans_brelse(tp, bp); + + return (error); +} + + +/* + * allocate an incore dquot from the kernel heap, + * and fill its core with quota information kept on disk. + * If XFS_QMOPT_DQALLOC is set, it'll allocate a dquot on disk + * if it wasn't already allocated. + */ +STATIC int +xfs_qm_idtodq( + xfs_mount_t *mp, + xfs_dqid_t id, /* gid or uid, depending on type */ + uint type, /* UDQUOT or GDQUOT */ + uint flags, /* DQALLOC, DQREPAIR */ + xfs_dquot_t **O_dqpp)/* OUT : incore dquot, not locked */ +{ + xfs_dquot_t *dqp; + int error; + xfs_trans_t *tp; + int cancelflags=0; + + dqp = xfs_qm_dqinit(mp, id, type); + tp = NULL; + if (flags & XFS_QMOPT_DQALLOC) { + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); + error = xfs_trans_reserve(tp, XFS_QM_DQALLOC_SPACE_RES(mp), + XFS_WRITE_LOG_RES(mp) + + BBTOB(mp->m_quotainfo->qi_dqchunklen) - 1 + + 128, + 0, + XFS_TRANS_PERM_LOG_RES, + XFS_WRITE_LOG_COUNT); + if (error) { + cancelflags = 0; + goto error0; + } + cancelflags = XFS_TRANS_RELEASE_LOG_RES; + } + + /* + * Read it from disk; xfs_dqread() takes care of + * all the necessary initialization of dquot's fields (locks, etc) + */ + if ((error = xfs_qm_dqread(&tp, id, dqp, flags))) { + /* + * This can happen if quotas got turned off (ESRCH), + * or if the dquot didn't exist on disk and we ask to + * allocate (ENOENT). + */ + trace_xfs_dqread_fail(dqp); + cancelflags |= XFS_TRANS_ABORT; + goto error0; + } + if (tp) { + if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) + goto error1; + } + + *O_dqpp = dqp; + return (0); + + error0: + ASSERT(error); + if (tp) + xfs_trans_cancel(tp, cancelflags); + error1: + xfs_qm_dqdestroy(dqp); + *O_dqpp = NULL; + return (error); +} + +/* + * Lookup a dquot in the incore dquot hashtable. We keep two separate + * hashtables for user and group dquots; and, these are global tables + * inside the XQM, not per-filesystem tables. + * The hash chain must be locked by caller, and it is left locked + * on return. Returning dquot is locked. + */ +STATIC int +xfs_qm_dqlookup( + xfs_mount_t *mp, + xfs_dqid_t id, + xfs_dqhash_t *qh, + xfs_dquot_t **O_dqpp) +{ + xfs_dquot_t *dqp; + uint flist_locked; + + ASSERT(mutex_is_locked(&qh->qh_lock)); + + flist_locked = B_FALSE; + + /* + * Traverse the hashchain looking for a match + */ + list_for_each_entry(dqp, &qh->qh_list, q_hashlist) { + /* + * We already have the hashlock. We don't need the + * dqlock to look at the id field of the dquot, since the + * id can't be modified without the hashlock anyway. + */ + if (be32_to_cpu(dqp->q_core.d_id) == id && dqp->q_mount == mp) { + trace_xfs_dqlookup_found(dqp); + + /* + * All in core dquots must be on the dqlist of mp + */ + ASSERT(!list_empty(&dqp->q_mplist)); + + xfs_dqlock(dqp); + if (dqp->q_nrefs == 0) { + ASSERT(!list_empty(&dqp->q_freelist)); + if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { + trace_xfs_dqlookup_want(dqp); + + /* + * We may have raced with dqreclaim_one() + * (and lost). So, flag that we don't + * want the dquot to be reclaimed. + */ + dqp->dq_flags |= XFS_DQ_WANT; + xfs_dqunlock(dqp); + mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); + xfs_dqlock(dqp); + dqp->dq_flags &= ~(XFS_DQ_WANT); + } + flist_locked = B_TRUE; + } + + /* + * id couldn't have changed; we had the hashlock all + * along + */ + ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); + + if (flist_locked) { + if (dqp->q_nrefs != 0) { + mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); + flist_locked = B_FALSE; + } else { + /* take it off the freelist */ + trace_xfs_dqlookup_freelist(dqp); + list_del_init(&dqp->q_freelist); + xfs_Gqm->qm_dqfrlist_cnt--; + } + } + + XFS_DQHOLD(dqp); + + if (flist_locked) + mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); + /* + * move the dquot to the front of the hashchain + */ + ASSERT(mutex_is_locked(&qh->qh_lock)); + list_move(&dqp->q_hashlist, &qh->qh_list); + trace_xfs_dqlookup_done(dqp); + *O_dqpp = dqp; + return 0; + } + } + + *O_dqpp = NULL; + ASSERT(mutex_is_locked(&qh->qh_lock)); + return (1); +} + +/* + * Given the file system, inode OR id, and type (UDQUOT/GDQUOT), return a + * a locked dquot, doing an allocation (if requested) as needed. + * When both an inode and an id are given, the inode's id takes precedence. + * That is, if the id changes while we don't hold the ilock inside this + * function, the new dquot is returned, not necessarily the one requested + * in the id argument. + */ +int +xfs_qm_dqget( + xfs_mount_t *mp, + xfs_inode_t *ip, /* locked inode (optional) */ + xfs_dqid_t id, /* uid/projid/gid depending on type */ + uint type, /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */ + uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ + xfs_dquot_t **O_dqpp) /* OUT : locked incore dquot */ +{ + xfs_dquot_t *dqp; + xfs_dqhash_t *h; + uint version; + int error; + + ASSERT(XFS_IS_QUOTA_RUNNING(mp)); + if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) || + (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) || + (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) { + return (ESRCH); + } + h = XFS_DQ_HASH(mp, id, type); + +#ifdef DEBUG + if (xfs_do_dqerror) { + if ((xfs_dqerror_target == mp->m_ddev_targp) && + (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) { + xfs_debug(mp, "Returning error in dqget"); + return (EIO); + } + } +#endif + + again: + +#ifdef DEBUG + ASSERT(type == XFS_DQ_USER || + type == XFS_DQ_PROJ || + type == XFS_DQ_GROUP); + if (ip) { + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + if (type == XFS_DQ_USER) + ASSERT(ip->i_udquot == NULL); + else + ASSERT(ip->i_gdquot == NULL); + } +#endif + mutex_lock(&h->qh_lock); + + /* + * Look in the cache (hashtable). + * The chain is kept locked during lookup. + */ + if (xfs_qm_dqlookup(mp, id, h, O_dqpp) == 0) { + XQM_STATS_INC(xqmstats.xs_qm_dqcachehits); + /* + * The dquot was found, moved to the front of the chain, + * taken off the freelist if it was on it, and locked + * at this point. Just unlock the hashchain and return. + */ + ASSERT(*O_dqpp); + ASSERT(XFS_DQ_IS_LOCKED(*O_dqpp)); + mutex_unlock(&h->qh_lock); + trace_xfs_dqget_hit(*O_dqpp); + return (0); /* success */ + } + XQM_STATS_INC(xqmstats.xs_qm_dqcachemisses); + + /* + * Dquot cache miss. We don't want to keep the inode lock across + * a (potential) disk read. Also we don't want to deal with the lock + * ordering between quotainode and this inode. OTOH, dropping the inode + * lock here means dealing with a chown that can happen before + * we re-acquire the lock. + */ + if (ip) + xfs_iunlock(ip, XFS_ILOCK_EXCL); + /* + * Save the hashchain version stamp, and unlock the chain, so that + * we don't keep the lock across a disk read + */ + version = h->qh_version; + mutex_unlock(&h->qh_lock); + + /* + * Allocate the dquot on the kernel heap, and read the ondisk + * portion off the disk. Also, do all the necessary initialization + * This can return ENOENT if dquot didn't exist on disk and we didn't + * ask it to allocate; ESRCH if quotas got turned off suddenly. + */ + if ((error = xfs_qm_idtodq(mp, id, type, + flags & (XFS_QMOPT_DQALLOC|XFS_QMOPT_DQREPAIR| + XFS_QMOPT_DOWARN), + &dqp))) { + if (ip) + xfs_ilock(ip, XFS_ILOCK_EXCL); + return (error); + } + + /* + * See if this is mount code calling to look at the overall quota limits + * which are stored in the id == 0 user or group's dquot. + * Since we may not have done a quotacheck by this point, just return + * the dquot without attaching it to any hashtables, lists, etc, or even + * taking a reference. + * The caller must dqdestroy this once done. + */ + if (flags & XFS_QMOPT_DQSUSER) { + ASSERT(id == 0); + ASSERT(! ip); + goto dqret; + } + + /* + * Dquot lock comes after hashlock in the lock ordering + */ + if (ip) { + xfs_ilock(ip, XFS_ILOCK_EXCL); + + /* + * A dquot could be attached to this inode by now, since + * we had dropped the ilock. + */ + if (type == XFS_DQ_USER) { + if (!XFS_IS_UQUOTA_ON(mp)) { + /* inode stays locked on return */ + xfs_qm_dqdestroy(dqp); + return XFS_ERROR(ESRCH); + } + if (ip->i_udquot) { + xfs_qm_dqdestroy(dqp); + dqp = ip->i_udquot; + xfs_dqlock(dqp); + goto dqret; + } + } else { + if (!XFS_IS_OQUOTA_ON(mp)) { + /* inode stays locked on return */ + xfs_qm_dqdestroy(dqp); + return XFS_ERROR(ESRCH); + } + if (ip->i_gdquot) { + xfs_qm_dqdestroy(dqp); + dqp = ip->i_gdquot; + xfs_dqlock(dqp); + goto dqret; + } + } + } + + /* + * Hashlock comes after ilock in lock order + */ + mutex_lock(&h->qh_lock); + if (version != h->qh_version) { + xfs_dquot_t *tmpdqp; + /* + * Now, see if somebody else put the dquot in the + * hashtable before us. This can happen because we didn't + * keep the hashchain lock. We don't have to worry about + * lock order between the two dquots here since dqp isn't + * on any findable lists yet. + */ + if (xfs_qm_dqlookup(mp, id, h, &tmpdqp) == 0) { + /* + * Duplicate found. Just throw away the new dquot + * and start over. + */ + xfs_qm_dqput(tmpdqp); + mutex_unlock(&h->qh_lock); + xfs_qm_dqdestroy(dqp); + XQM_STATS_INC(xqmstats.xs_qm_dquot_dups); + goto again; + } + } + + /* + * Put the dquot at the beginning of the hash-chain and mp's list + * LOCK ORDER: hashlock, freelistlock, mplistlock, udqlock, gdqlock .. + */ + ASSERT(mutex_is_locked(&h->qh_lock)); + dqp->q_hash = h; + list_add(&dqp->q_hashlist, &h->qh_list); + h->qh_version++; + + /* + * Attach this dquot to this filesystem's list of all dquots, + * kept inside the mount structure in m_quotainfo field + */ + mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); + + /* + * We return a locked dquot to the caller, with a reference taken + */ + xfs_dqlock(dqp); + dqp->q_nrefs = 1; + + list_add(&dqp->q_mplist, &mp->m_quotainfo->qi_dqlist); + mp->m_quotainfo->qi_dquots++; + mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); + mutex_unlock(&h->qh_lock); + dqret: + ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL)); + trace_xfs_dqget_miss(dqp); + *O_dqpp = dqp; + return (0); +} + + +/* + * Release a reference to the dquot (decrement ref-count) + * and unlock it. If there is a group quota attached to this + * dquot, carefully release that too without tripping over + * deadlocks'n'stuff. + */ +void +xfs_qm_dqput( + xfs_dquot_t *dqp) +{ + xfs_dquot_t *gdqp; + + ASSERT(dqp->q_nrefs > 0); + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + + trace_xfs_dqput(dqp); + + if (dqp->q_nrefs != 1) { + dqp->q_nrefs--; + xfs_dqunlock(dqp); + return; + } + + /* + * drop the dqlock and acquire the freelist and dqlock + * in the right order; but try to get it out-of-order first + */ + if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { + trace_xfs_dqput_wait(dqp); + xfs_dqunlock(dqp); + mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); + xfs_dqlock(dqp); + } + + while (1) { + gdqp = NULL; + + /* We can't depend on nrefs being == 1 here */ + if (--dqp->q_nrefs == 0) { + trace_xfs_dqput_free(dqp); + + list_add_tail(&dqp->q_freelist, &xfs_Gqm->qm_dqfrlist); + xfs_Gqm->qm_dqfrlist_cnt++; + + /* + * If we just added a udquot to the freelist, then + * we want to release the gdquot reference that + * it (probably) has. Otherwise it'll keep the + * gdquot from getting reclaimed. + */ + if ((gdqp = dqp->q_gdquot)) { + /* + * Avoid a recursive dqput call + */ + xfs_dqlock(gdqp); + dqp->q_gdquot = NULL; + } + } + xfs_dqunlock(dqp); + + /* + * If we had a group quota inside the user quota as a hint, + * release it now. + */ + if (! gdqp) + break; + dqp = gdqp; + } + mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); +} + +/* + * Release a dquot. Flush it if dirty, then dqput() it. + * dquot must not be locked. + */ +void +xfs_qm_dqrele( + xfs_dquot_t *dqp) +{ + if (!dqp) + return; + + trace_xfs_dqrele(dqp); + + xfs_dqlock(dqp); + /* + * We don't care to flush it if the dquot is dirty here. + * That will create stutters that we want to avoid. + * Instead we do a delayed write when we try to reclaim + * a dirty dquot. Also xfs_sync will take part of the burden... + */ + xfs_qm_dqput(dqp); +} + +/* + * This is the dquot flushing I/O completion routine. It is called + * from interrupt level when the buffer containing the dquot is + * flushed to disk. It is responsible for removing the dquot logitem + * from the AIL if it has not been re-logged, and unlocking the dquot's + * flush lock. This behavior is very similar to that of inodes.. + */ +STATIC void +xfs_qm_dqflush_done( + struct xfs_buf *bp, + struct xfs_log_item *lip) +{ + xfs_dq_logitem_t *qip = (struct xfs_dq_logitem *)lip; + xfs_dquot_t *dqp = qip->qli_dquot; + struct xfs_ail *ailp = lip->li_ailp; + + /* + * We only want to pull the item from the AIL if its + * location in the log has not changed since we started the flush. + * Thus, we only bother if the dquot's lsn has + * not changed. First we check the lsn outside the lock + * since it's cheaper, and then we recheck while + * holding the lock before removing the dquot from the AIL. + */ + if ((lip->li_flags & XFS_LI_IN_AIL) && + lip->li_lsn == qip->qli_flush_lsn) { + + /* xfs_trans_ail_delete() drops the AIL lock. */ + spin_lock(&ailp->xa_lock); + if (lip->li_lsn == qip->qli_flush_lsn) + xfs_trans_ail_delete(ailp, lip); + else + spin_unlock(&ailp->xa_lock); + } + + /* + * Release the dq's flush lock since we're done with it. + */ + xfs_dqfunlock(dqp); +} + +/* + * Write a modified dquot to disk. + * The dquot must be locked and the flush lock too taken by caller. + * The flush lock will not be unlocked until the dquot reaches the disk, + * but the dquot is free to be unlocked and modified by the caller + * in the interim. Dquot is still locked on return. This behavior is + * identical to that of inodes. + */ +int +xfs_qm_dqflush( + xfs_dquot_t *dqp, + uint flags) +{ + struct xfs_mount *mp = dqp->q_mount; + struct xfs_buf *bp; + struct xfs_disk_dquot *ddqp; + int error; + + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + ASSERT(!completion_done(&dqp->q_flush)); + + trace_xfs_dqflush(dqp); + + /* + * If not dirty, or it's pinned and we are not supposed to block, nada. + */ + if (!XFS_DQ_IS_DIRTY(dqp) || + (!(flags & SYNC_WAIT) && atomic_read(&dqp->q_pincount) > 0)) { + xfs_dqfunlock(dqp); + return 0; + } + xfs_qm_dqunpin_wait(dqp); + + /* + * This may have been unpinned because the filesystem is shutting + * down forcibly. If that's the case we must not write this dquot + * to disk, because the log record didn't make it to disk! + */ + if (XFS_FORCED_SHUTDOWN(mp)) { + dqp->dq_flags &= ~XFS_DQ_DIRTY; + xfs_dqfunlock(dqp); + return XFS_ERROR(EIO); + } + + /* + * Get the buffer containing the on-disk dquot + */ + error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, + mp->m_quotainfo->qi_dqchunklen, 0, &bp); + if (error) { + ASSERT(error != ENOENT); + xfs_dqfunlock(dqp); + return error; + } + + /* + * Calculate the location of the dquot inside the buffer. + */ + ddqp = bp->b_addr + dqp->q_bufoffset; + + /* + * A simple sanity check in case we got a corrupted dquot.. + */ + error = xfs_qm_dqcheck(mp, &dqp->q_core, be32_to_cpu(ddqp->d_id), 0, + XFS_QMOPT_DOWARN, "dqflush (incore copy)"); + if (error) { + xfs_buf_relse(bp); + xfs_dqfunlock(dqp); + xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); + return XFS_ERROR(EIO); + } + + /* This is the only portion of data that needs to persist */ + memcpy(ddqp, &dqp->q_core, sizeof(xfs_disk_dquot_t)); + + /* + * Clear the dirty field and remember the flush lsn for later use. + */ + dqp->dq_flags &= ~XFS_DQ_DIRTY; + + xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn, + &dqp->q_logitem.qli_item.li_lsn); + + /* + * Attach an iodone routine so that we can remove this dquot from the + * AIL and release the flush lock once the dquot is synced to disk. + */ + xfs_buf_attach_iodone(bp, xfs_qm_dqflush_done, + &dqp->q_logitem.qli_item); + + /* + * If the buffer is pinned then push on the log so we won't + * get stuck waiting in the write for too long. + */ + if (xfs_buf_ispinned(bp)) { + trace_xfs_dqflush_force(dqp); + xfs_log_force(mp, 0); + } + + if (flags & SYNC_WAIT) + error = xfs_bwrite(mp, bp); + else + xfs_bdwrite(mp, bp); + + trace_xfs_dqflush_done(dqp); + + /* + * dqp is still locked, but caller is free to unlock it now. + */ + return error; + +} + +int +xfs_qm_dqlock_nowait( + xfs_dquot_t *dqp) +{ + return mutex_trylock(&dqp->q_qlock); +} + +void +xfs_dqlock( + xfs_dquot_t *dqp) +{ + mutex_lock(&dqp->q_qlock); +} + +void +xfs_dqunlock( + xfs_dquot_t *dqp) +{ + mutex_unlock(&(dqp->q_qlock)); + if (dqp->q_logitem.qli_dquot == dqp) { + /* Once was dqp->q_mount, but might just have been cleared */ + xfs_trans_unlocked_item(dqp->q_logitem.qli_item.li_ailp, + (xfs_log_item_t*)&(dqp->q_logitem)); + } +} + + +void +xfs_dqunlock_nonotify( + xfs_dquot_t *dqp) +{ + mutex_unlock(&(dqp->q_qlock)); +} + +/* + * Lock two xfs_dquot structures. + * + * To avoid deadlocks we always lock the quota structure with + * the lowerd id first. + */ +void +xfs_dqlock2( + xfs_dquot_t *d1, + xfs_dquot_t *d2) +{ + if (d1 && d2) { + ASSERT(d1 != d2); + if (be32_to_cpu(d1->q_core.d_id) > + be32_to_cpu(d2->q_core.d_id)) { + mutex_lock(&d2->q_qlock); + mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED); + } else { + mutex_lock(&d1->q_qlock); + mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED); + } + } else if (d1) { + mutex_lock(&d1->q_qlock); + } else if (d2) { + mutex_lock(&d2->q_qlock); + } +} + + +/* + * Take a dquot out of the mount's dqlist as well as the hashlist. + * This is called via unmount as well as quotaoff, and the purge + * will always succeed unless there are soft (temp) references + * outstanding. + * + * This returns 0 if it was purged, 1 if it wasn't. It's not an error code + * that we're returning! XXXsup - not cool. + */ +/* ARGSUSED */ +int +xfs_qm_dqpurge( + xfs_dquot_t *dqp) +{ + xfs_dqhash_t *qh = dqp->q_hash; + xfs_mount_t *mp = dqp->q_mount; + + ASSERT(mutex_is_locked(&mp->m_quotainfo->qi_dqlist_lock)); + ASSERT(mutex_is_locked(&dqp->q_hash->qh_lock)); + + xfs_dqlock(dqp); + /* + * We really can't afford to purge a dquot that is + * referenced, because these are hard refs. + * It shouldn't happen in general because we went thru _all_ inodes in + * dqrele_all_inodes before calling this and didn't let the mountlock go. + * However it is possible that we have dquots with temporary + * references that are not attached to an inode. e.g. see xfs_setattr(). + */ + if (dqp->q_nrefs != 0) { + xfs_dqunlock(dqp); + mutex_unlock(&dqp->q_hash->qh_lock); + return (1); + } + + ASSERT(!list_empty(&dqp->q_freelist)); + + /* + * If we're turning off quotas, we have to make sure that, for + * example, we don't delete quota disk blocks while dquots are + * in the process of getting written to those disk blocks. + * This dquot might well be on AIL, and we can't leave it there + * if we're turning off quotas. Basically, we need this flush + * lock, and are willing to block on it. + */ + if (!xfs_dqflock_nowait(dqp)) { + /* + * Block on the flush lock after nudging dquot buffer, + * if it is incore. + */ + xfs_qm_dqflock_pushbuf_wait(dqp); + } + + /* + * XXXIf we're turning this type of quotas off, we don't care + * about the dirty metadata sitting in this dquot. OTOH, if + * we're unmounting, we do care, so we flush it and wait. + */ + if (XFS_DQ_IS_DIRTY(dqp)) { + int error; + + /* dqflush unlocks dqflock */ + /* + * Given that dqpurge is a very rare occurrence, it is OK + * that we're holding the hashlist and mplist locks + * across the disk write. But, ... XXXsup + * + * We don't care about getting disk errors here. We need + * to purge this dquot anyway, so we go ahead regardless. + */ + error = xfs_qm_dqflush(dqp, SYNC_WAIT); + if (error) + xfs_warn(mp, "%s: dquot %p flush failed", + __func__, dqp); + xfs_dqflock(dqp); + } + ASSERT(atomic_read(&dqp->q_pincount) == 0); + ASSERT(XFS_FORCED_SHUTDOWN(mp) || + !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); + + list_del_init(&dqp->q_hashlist); + qh->qh_version++; + list_del_init(&dqp->q_mplist); + mp->m_quotainfo->qi_dqreclaims++; + mp->m_quotainfo->qi_dquots--; + /* + * XXX Move this to the front of the freelist, if we can get the + * freelist lock. + */ + ASSERT(!list_empty(&dqp->q_freelist)); + + dqp->q_mount = NULL; + dqp->q_hash = NULL; + dqp->dq_flags = XFS_DQ_INACTIVE; + memset(&dqp->q_core, 0, sizeof(dqp->q_core)); + xfs_dqfunlock(dqp); + xfs_dqunlock(dqp); + mutex_unlock(&qh->qh_lock); + return (0); +} + + +/* + * Give the buffer a little push if it is incore and + * wait on the flush lock. + */ +void +xfs_qm_dqflock_pushbuf_wait( + xfs_dquot_t *dqp) +{ + xfs_mount_t *mp = dqp->q_mount; + xfs_buf_t *bp; + + /* + * Check to see if the dquot has been flushed delayed + * write. If so, grab its buffer and send it + * out immediately. We'll be able to acquire + * the flush lock when the I/O completes. + */ + bp = xfs_incore(mp->m_ddev_targp, dqp->q_blkno, + mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); + if (!bp) + goto out_lock; + + if (XFS_BUF_ISDELAYWRITE(bp)) { + if (xfs_buf_ispinned(bp)) + xfs_log_force(mp, 0); + xfs_buf_delwri_promote(bp); + wake_up_process(bp->b_target->bt_task); + } + xfs_buf_relse(bp); +out_lock: + xfs_dqflock(dqp); +} diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h new file mode 100644 index 000000000000..34b7e945dbfa --- /dev/null +++ b/fs/xfs/xfs_dquot.h @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_DQUOT_H__ +#define __XFS_DQUOT_H__ + +/* + * Dquots are structures that hold quota information about a user or a group, + * much like inodes are for files. In fact, dquots share many characteristics + * with inodes. However, dquots can also be a centralized resource, relative + * to a collection of inodes. In this respect, dquots share some characteristics + * of the superblock. + * XFS dquots exploit both those in its algorithms. They make every attempt + * to not be a bottleneck when quotas are on and have minimal impact, if any, + * when quotas are off. + */ + +/* + * The hash chain headers (hash buckets) + */ +typedef struct xfs_dqhash { + struct list_head qh_list; + struct mutex qh_lock; + uint qh_version; /* ever increasing version */ + uint qh_nelems; /* number of dquots on the list */ +} xfs_dqhash_t; + +struct xfs_mount; +struct xfs_trans; + +/* + * The incore dquot structure + */ +typedef struct xfs_dquot { + uint dq_flags; /* various flags (XFS_DQ_*) */ + struct list_head q_freelist; /* global free list of dquots */ + struct list_head q_mplist; /* mount's list of dquots */ + struct list_head q_hashlist; /* gloabl hash list of dquots */ + xfs_dqhash_t *q_hash; /* the hashchain header */ + struct xfs_mount*q_mount; /* filesystem this relates to */ + struct xfs_trans*q_transp; /* trans this belongs to currently */ + uint q_nrefs; /* # active refs from inodes */ + xfs_daddr_t q_blkno; /* blkno of dquot buffer */ + int q_bufoffset; /* off of dq in buffer (# dquots) */ + xfs_fileoff_t q_fileoffset; /* offset in quotas file */ + + struct xfs_dquot*q_gdquot; /* group dquot, hint only */ + xfs_disk_dquot_t q_core; /* actual usage & quotas */ + xfs_dq_logitem_t q_logitem; /* dquot log item */ + xfs_qcnt_t q_res_bcount; /* total regular nblks used+reserved */ + xfs_qcnt_t q_res_icount; /* total inos allocd+reserved */ + xfs_qcnt_t q_res_rtbcount;/* total realtime blks used+reserved */ + struct mutex q_qlock; /* quota lock */ + struct completion q_flush; /* flush completion queue */ + atomic_t q_pincount; /* dquot pin count */ + wait_queue_head_t q_pinwait; /* dquot pinning wait queue */ +} xfs_dquot_t; + +/* + * Lock hierarchy for q_qlock: + * XFS_QLOCK_NORMAL is the implicit default, + * XFS_QLOCK_NESTED is the dquot with the higher id in xfs_dqlock2 + */ +enum { + XFS_QLOCK_NORMAL = 0, + XFS_QLOCK_NESTED, +}; + +#define XFS_DQHOLD(dqp) ((dqp)->q_nrefs++) + +/* + * Manage the q_flush completion queue embedded in the dquot. This completion + * queue synchronizes processes attempting to flush the in-core dquot back to + * disk. + */ +static inline void xfs_dqflock(xfs_dquot_t *dqp) +{ + wait_for_completion(&dqp->q_flush); +} + +static inline int xfs_dqflock_nowait(xfs_dquot_t *dqp) +{ + return try_wait_for_completion(&dqp->q_flush); +} + +static inline void xfs_dqfunlock(xfs_dquot_t *dqp) +{ + complete(&dqp->q_flush); +} + +#define XFS_DQ_IS_LOCKED(dqp) (mutex_is_locked(&((dqp)->q_qlock))) +#define XFS_DQ_IS_DIRTY(dqp) ((dqp)->dq_flags & XFS_DQ_DIRTY) +#define XFS_QM_ISUDQ(dqp) ((dqp)->dq_flags & XFS_DQ_USER) +#define XFS_QM_ISPDQ(dqp) ((dqp)->dq_flags & XFS_DQ_PROJ) +#define XFS_QM_ISGDQ(dqp) ((dqp)->dq_flags & XFS_DQ_GROUP) +#define XFS_DQ_TO_QINF(dqp) ((dqp)->q_mount->m_quotainfo) +#define XFS_DQ_TO_QIP(dqp) (XFS_QM_ISUDQ(dqp) ? \ + XFS_DQ_TO_QINF(dqp)->qi_uquotaip : \ + XFS_DQ_TO_QINF(dqp)->qi_gquotaip) + +#define XFS_IS_THIS_QUOTA_OFF(d) (! (XFS_QM_ISUDQ(d) ? \ + (XFS_IS_UQUOTA_ON((d)->q_mount)) : \ + (XFS_IS_OQUOTA_ON((d)->q_mount)))) + +extern void xfs_qm_dqdestroy(xfs_dquot_t *); +extern int xfs_qm_dqflush(xfs_dquot_t *, uint); +extern int xfs_qm_dqpurge(xfs_dquot_t *); +extern void xfs_qm_dqunpin_wait(xfs_dquot_t *); +extern int xfs_qm_dqlock_nowait(xfs_dquot_t *); +extern void xfs_qm_dqflock_pushbuf_wait(xfs_dquot_t *dqp); +extern void xfs_qm_adjust_dqtimers(xfs_mount_t *, + xfs_disk_dquot_t *); +extern void xfs_qm_adjust_dqlimits(xfs_mount_t *, + xfs_disk_dquot_t *); +extern int xfs_qm_dqget(xfs_mount_t *, xfs_inode_t *, + xfs_dqid_t, uint, uint, xfs_dquot_t **); +extern void xfs_qm_dqput(xfs_dquot_t *); +extern void xfs_dqlock(xfs_dquot_t *); +extern void xfs_dqlock2(xfs_dquot_t *, xfs_dquot_t *); +extern void xfs_dqunlock(xfs_dquot_t *); +extern void xfs_dqunlock_nonotify(xfs_dquot_t *); + +#endif /* __XFS_DQUOT_H__ */ diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c new file mode 100644 index 000000000000..9e0e2fa3f2c8 --- /dev/null +++ b/fs/xfs/xfs_dquot_item.c @@ -0,0 +1,529 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_itable.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_trans_priv.h" +#include "xfs_qm.h" + +static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip) +{ + return container_of(lip, struct xfs_dq_logitem, qli_item); +} + +/* + * returns the number of iovecs needed to log the given dquot item. + */ +STATIC uint +xfs_qm_dquot_logitem_size( + struct xfs_log_item *lip) +{ + /* + * we need only two iovecs, one for the format, one for the real thing + */ + return 2; +} + +/* + * fills in the vector of log iovecs for the given dquot log item. + */ +STATIC void +xfs_qm_dquot_logitem_format( + struct xfs_log_item *lip, + struct xfs_log_iovec *logvec) +{ + struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); + + logvec->i_addr = &qlip->qli_format; + logvec->i_len = sizeof(xfs_dq_logformat_t); + logvec->i_type = XLOG_REG_TYPE_QFORMAT; + logvec++; + logvec->i_addr = &qlip->qli_dquot->q_core; + logvec->i_len = sizeof(xfs_disk_dquot_t); + logvec->i_type = XLOG_REG_TYPE_DQUOT; + + ASSERT(2 == lip->li_desc->lid_size); + qlip->qli_format.qlf_size = 2; + +} + +/* + * Increment the pin count of the given dquot. + */ +STATIC void +xfs_qm_dquot_logitem_pin( + struct xfs_log_item *lip) +{ + struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; + + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + atomic_inc(&dqp->q_pincount); +} + +/* + * Decrement the pin count of the given dquot, and wake up + * anyone in xfs_dqwait_unpin() if the count goes to 0. The + * dquot must have been previously pinned with a call to + * xfs_qm_dquot_logitem_pin(). + */ +STATIC void +xfs_qm_dquot_logitem_unpin( + struct xfs_log_item *lip, + int remove) +{ + struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; + + ASSERT(atomic_read(&dqp->q_pincount) > 0); + if (atomic_dec_and_test(&dqp->q_pincount)) + wake_up(&dqp->q_pinwait); +} + +/* + * Given the logitem, this writes the corresponding dquot entry to disk + * asynchronously. This is called with the dquot entry securely locked; + * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot + * at the end. + */ +STATIC void +xfs_qm_dquot_logitem_push( + struct xfs_log_item *lip) +{ + struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; + int error; + + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + ASSERT(!completion_done(&dqp->q_flush)); + + /* + * Since we were able to lock the dquot's flush lock and + * we found it on the AIL, the dquot must be dirty. This + * is because the dquot is removed from the AIL while still + * holding the flush lock in xfs_dqflush_done(). Thus, if + * we found it in the AIL and were able to obtain the flush + * lock without sleeping, then there must not have been + * anyone in the process of flushing the dquot. + */ + error = xfs_qm_dqflush(dqp, 0); + if (error) + xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", + __func__, error, dqp); + xfs_dqunlock(dqp); +} + +STATIC xfs_lsn_t +xfs_qm_dquot_logitem_committed( + struct xfs_log_item *lip, + xfs_lsn_t lsn) +{ + /* + * We always re-log the entire dquot when it becomes dirty, + * so, the latest copy _is_ the only one that matters. + */ + return lsn; +} + +/* + * This is called to wait for the given dquot to be unpinned. + * Most of these pin/unpin routines are plagiarized from inode code. + */ +void +xfs_qm_dqunpin_wait( + struct xfs_dquot *dqp) +{ + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + if (atomic_read(&dqp->q_pincount) == 0) + return; + + /* + * Give the log a push so we don't wait here too long. + */ + xfs_log_force(dqp->q_mount, 0); + wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); +} + +/* + * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that + * the dquot is locked by us, but the flush lock isn't. So, here we are + * going to see if the relevant dquot buffer is incore, waiting on DELWRI. + * If so, we want to push it out to help us take this item off the AIL as soon + * as possible. + * + * We must not be holding the AIL lock at this point. Calling incore() to + * search the buffer cache can be a time consuming thing, and AIL lock is a + * spinlock. + */ +STATIC void +xfs_qm_dquot_logitem_pushbuf( + struct xfs_log_item *lip) +{ + struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); + struct xfs_dquot *dqp = qlip->qli_dquot; + struct xfs_buf *bp; + + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + + /* + * If flushlock isn't locked anymore, chances are that the + * inode flush completed and the inode was taken off the AIL. + * So, just get out. + */ + if (completion_done(&dqp->q_flush) || + !(lip->li_flags & XFS_LI_IN_AIL)) { + xfs_dqunlock(dqp); + return; + } + + bp = xfs_incore(dqp->q_mount->m_ddev_targp, qlip->qli_format.qlf_blkno, + dqp->q_mount->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); + xfs_dqunlock(dqp); + if (!bp) + return; + if (XFS_BUF_ISDELAYWRITE(bp)) + xfs_buf_delwri_promote(bp); + xfs_buf_relse(bp); +} + +/* + * This is called to attempt to lock the dquot associated with this + * dquot log item. Don't sleep on the dquot lock or the flush lock. + * If the flush lock is already held, indicating that the dquot has + * been or is in the process of being flushed, then see if we can + * find the dquot's buffer in the buffer cache without sleeping. If + * we can and it is marked delayed write, then we want to send it out. + * We delay doing so until the push routine, though, to avoid sleeping + * in any device strategy routines. + */ +STATIC uint +xfs_qm_dquot_logitem_trylock( + struct xfs_log_item *lip) +{ + struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; + + if (atomic_read(&dqp->q_pincount) > 0) + return XFS_ITEM_PINNED; + + if (!xfs_qm_dqlock_nowait(dqp)) + return XFS_ITEM_LOCKED; + + if (!xfs_dqflock_nowait(dqp)) { + /* + * dquot has already been flushed to the backing buffer, + * leave it locked, pushbuf routine will unlock it. + */ + return XFS_ITEM_PUSHBUF; + } + + ASSERT(lip->li_flags & XFS_LI_IN_AIL); + return XFS_ITEM_SUCCESS; +} + +/* + * Unlock the dquot associated with the log item. + * Clear the fields of the dquot and dquot log item that + * are specific to the current transaction. If the + * hold flags is set, do not unlock the dquot. + */ +STATIC void +xfs_qm_dquot_logitem_unlock( + struct xfs_log_item *lip) +{ + struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; + + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + + /* + * Clear the transaction pointer in the dquot + */ + dqp->q_transp = NULL; + + /* + * dquots are never 'held' from getting unlocked at the end of + * a transaction. Their locking and unlocking is hidden inside the + * transaction layer, within trans_commit. Hence, no LI_HOLD flag + * for the logitem. + */ + xfs_dqunlock(dqp); +} + +/* + * this needs to stamp an lsn into the dquot, I think. + * rpc's that look at user dquot's would then have to + * push on the dependency recorded in the dquot + */ +STATIC void +xfs_qm_dquot_logitem_committing( + struct xfs_log_item *lip, + xfs_lsn_t lsn) +{ +} + +/* + * This is the ops vector for dquots + */ +static struct xfs_item_ops xfs_dquot_item_ops = { + .iop_size = xfs_qm_dquot_logitem_size, + .iop_format = xfs_qm_dquot_logitem_format, + .iop_pin = xfs_qm_dquot_logitem_pin, + .iop_unpin = xfs_qm_dquot_logitem_unpin, + .iop_trylock = xfs_qm_dquot_logitem_trylock, + .iop_unlock = xfs_qm_dquot_logitem_unlock, + .iop_committed = xfs_qm_dquot_logitem_committed, + .iop_push = xfs_qm_dquot_logitem_push, + .iop_pushbuf = xfs_qm_dquot_logitem_pushbuf, + .iop_committing = xfs_qm_dquot_logitem_committing +}; + +/* + * Initialize the dquot log item for a newly allocated dquot. + * The dquot isn't locked at this point, but it isn't on any of the lists + * either, so we don't care. + */ +void +xfs_qm_dquot_logitem_init( + struct xfs_dquot *dqp) +{ + struct xfs_dq_logitem *lp = &dqp->q_logitem; + + xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, + &xfs_dquot_item_ops); + lp->qli_dquot = dqp; + lp->qli_format.qlf_type = XFS_LI_DQUOT; + lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); + lp->qli_format.qlf_blkno = dqp->q_blkno; + lp->qli_format.qlf_len = 1; + /* + * This is just the offset of this dquot within its buffer + * (which is currently 1 FSB and probably won't change). + * Hence 32 bits for this offset should be just fine. + * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) + * here, and recompute it at recovery time. + */ + lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; +} + +/*------------------ QUOTAOFF LOG ITEMS -------------------*/ + +static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) +{ + return container_of(lip, struct xfs_qoff_logitem, qql_item); +} + + +/* + * This returns the number of iovecs needed to log the given quotaoff item. + * We only need 1 iovec for an quotaoff item. It just logs the + * quotaoff_log_format structure. + */ +STATIC uint +xfs_qm_qoff_logitem_size( + struct xfs_log_item *lip) +{ + return 1; +} + +/* + * This is called to fill in the vector of log iovecs for the + * given quotaoff log item. We use only 1 iovec, and we point that + * at the quotaoff_log_format structure embedded in the quotaoff item. + * It is at this point that we assert that all of the extent + * slots in the quotaoff item have been filled. + */ +STATIC void +xfs_qm_qoff_logitem_format( + struct xfs_log_item *lip, + struct xfs_log_iovec *log_vector) +{ + struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); + + ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); + + log_vector->i_addr = &qflip->qql_format; + log_vector->i_len = sizeof(xfs_qoff_logitem_t); + log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; + qflip->qql_format.qf_size = 1; +} + +/* + * Pinning has no meaning for an quotaoff item, so just return. + */ +STATIC void +xfs_qm_qoff_logitem_pin( + struct xfs_log_item *lip) +{ +} + +/* + * Since pinning has no meaning for an quotaoff item, unpinning does + * not either. + */ +STATIC void +xfs_qm_qoff_logitem_unpin( + struct xfs_log_item *lip, + int remove) +{ +} + +/* + * Quotaoff items have no locking, so just return success. + */ +STATIC uint +xfs_qm_qoff_logitem_trylock( + struct xfs_log_item *lip) +{ + return XFS_ITEM_LOCKED; +} + +/* + * Quotaoff items have no locking or pushing, so return failure + * so that the caller doesn't bother with us. + */ +STATIC void +xfs_qm_qoff_logitem_unlock( + struct xfs_log_item *lip) +{ +} + +/* + * The quotaoff-start-item is logged only once and cannot be moved in the log, + * so simply return the lsn at which it's been logged. + */ +STATIC xfs_lsn_t +xfs_qm_qoff_logitem_committed( + struct xfs_log_item *lip, + xfs_lsn_t lsn) +{ + return lsn; +} + +/* + * There isn't much you can do to push on an quotaoff item. It is simply + * stuck waiting for the log to be flushed to disk. + */ +STATIC void +xfs_qm_qoff_logitem_push( + struct xfs_log_item *lip) +{ +} + + +STATIC xfs_lsn_t +xfs_qm_qoffend_logitem_committed( + struct xfs_log_item *lip, + xfs_lsn_t lsn) +{ + struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip); + struct xfs_qoff_logitem *qfs = qfe->qql_start_lip; + struct xfs_ail *ailp = qfs->qql_item.li_ailp; + + /* + * Delete the qoff-start logitem from the AIL. + * xfs_trans_ail_delete() drops the AIL lock. + */ + spin_lock(&ailp->xa_lock); + xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); + + kmem_free(qfs); + kmem_free(qfe); + return (xfs_lsn_t)-1; +} + +/* + * XXX rcc - don't know quite what to do with this. I think we can + * just ignore it. The only time that isn't the case is if we allow + * the client to somehow see that quotas have been turned off in which + * we can't allow that to get back until the quotaoff hits the disk. + * So how would that happen? Also, do we need different routines for + * quotaoff start and quotaoff end? I suspect the answer is yes but + * to be sure, I need to look at the recovery code and see how quota off + * recovery is handled (do we roll forward or back or do something else). + * If we roll forwards or backwards, then we need two separate routines, + * one that does nothing and one that stamps in the lsn that matters + * (truly makes the quotaoff irrevocable). If we do something else, + * then maybe we don't need two. + */ +STATIC void +xfs_qm_qoff_logitem_committing( + struct xfs_log_item *lip, + xfs_lsn_t commit_lsn) +{ +} + +static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { + .iop_size = xfs_qm_qoff_logitem_size, + .iop_format = xfs_qm_qoff_logitem_format, + .iop_pin = xfs_qm_qoff_logitem_pin, + .iop_unpin = xfs_qm_qoff_logitem_unpin, + .iop_trylock = xfs_qm_qoff_logitem_trylock, + .iop_unlock = xfs_qm_qoff_logitem_unlock, + .iop_committed = xfs_qm_qoffend_logitem_committed, + .iop_push = xfs_qm_qoff_logitem_push, + .iop_committing = xfs_qm_qoff_logitem_committing +}; + +/* + * This is the ops vector shared by all quotaoff-start log items. + */ +static struct xfs_item_ops xfs_qm_qoff_logitem_ops = { + .iop_size = xfs_qm_qoff_logitem_size, + .iop_format = xfs_qm_qoff_logitem_format, + .iop_pin = xfs_qm_qoff_logitem_pin, + .iop_unpin = xfs_qm_qoff_logitem_unpin, + .iop_trylock = xfs_qm_qoff_logitem_trylock, + .iop_unlock = xfs_qm_qoff_logitem_unlock, + .iop_committed = xfs_qm_qoff_logitem_committed, + .iop_push = xfs_qm_qoff_logitem_push, + .iop_committing = xfs_qm_qoff_logitem_committing +}; + +/* + * Allocate and initialize an quotaoff item of the correct quota type(s). + */ +struct xfs_qoff_logitem * +xfs_qm_qoff_logitem_init( + struct xfs_mount *mp, + struct xfs_qoff_logitem *start, + uint flags) +{ + struct xfs_qoff_logitem *qf; + + qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), KM_SLEEP); + + xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? + &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); + qf->qql_item.li_mountp = mp; + qf->qql_format.qf_type = XFS_LI_QUOTAOFF; + qf->qql_format.qf_flags = flags; + qf->qql_start_lip = start; + return qf; +} diff --git a/fs/xfs/xfs_dquot_item.h b/fs/xfs/xfs_dquot_item.h new file mode 100644 index 000000000000..5acae2ada70b --- /dev/null +++ b/fs/xfs/xfs_dquot_item.h @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_DQUOT_ITEM_H__ +#define __XFS_DQUOT_ITEM_H__ + +struct xfs_dquot; +struct xfs_trans; +struct xfs_mount; +struct xfs_qoff_logitem; + +typedef struct xfs_dq_logitem { + xfs_log_item_t qli_item; /* common portion */ + struct xfs_dquot *qli_dquot; /* dquot ptr */ + xfs_lsn_t qli_flush_lsn; /* lsn at last flush */ + xfs_dq_logformat_t qli_format; /* logged structure */ +} xfs_dq_logitem_t; + +typedef struct xfs_qoff_logitem { + xfs_log_item_t qql_item; /* common portion */ + struct xfs_qoff_logitem *qql_start_lip; /* qoff-start logitem, if any */ + xfs_qoff_logformat_t qql_format; /* logged structure */ +} xfs_qoff_logitem_t; + + +extern void xfs_qm_dquot_logitem_init(struct xfs_dquot *); +extern xfs_qoff_logitem_t *xfs_qm_qoff_logitem_init(struct xfs_mount *, + struct xfs_qoff_logitem *, uint); +extern xfs_qoff_logitem_t *xfs_trans_get_qoff_item(struct xfs_trans *, + struct xfs_qoff_logitem *, uint); +extern void xfs_trans_log_quotaoff_item(struct xfs_trans *, + struct xfs_qoff_logitem *); + +#endif /* __XFS_DQUOT_ITEM_H__ */ diff --git a/fs/xfs/xfs_export.c b/fs/xfs/xfs_export.c new file mode 100644 index 000000000000..75e5d322e48f --- /dev/null +++ b/fs/xfs/xfs_export.c @@ -0,0 +1,250 @@ +/* + * Copyright (c) 2004-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_types.h" +#include "xfs_inum.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_dir2.h" +#include "xfs_mount.h" +#include "xfs_export.h" +#include "xfs_vnodeops.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_inode_item.h" +#include "xfs_trace.h" + +/* + * Note that we only accept fileids which are long enough rather than allow + * the parent generation number to default to zero. XFS considers zero a + * valid generation number not an invalid/wildcard value. + */ +static int xfs_fileid_length(int fileid_type) +{ + switch (fileid_type) { + case FILEID_INO32_GEN: + return 2; + case FILEID_INO32_GEN_PARENT: + return 4; + case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG: + return 3; + case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: + return 6; + } + return 255; /* invalid */ +} + +STATIC int +xfs_fs_encode_fh( + struct dentry *dentry, + __u32 *fh, + int *max_len, + int connectable) +{ + struct fid *fid = (struct fid *)fh; + struct xfs_fid64 *fid64 = (struct xfs_fid64 *)fh; + struct inode *inode = dentry->d_inode; + int fileid_type; + int len; + + /* Directories don't need their parent encoded, they have ".." */ + if (S_ISDIR(inode->i_mode) || !connectable) + fileid_type = FILEID_INO32_GEN; + else + fileid_type = FILEID_INO32_GEN_PARENT; + + /* + * If the the filesystem may contain 64bit inode numbers, we need + * to use larger file handles that can represent them. + * + * While we only allocate inodes that do not fit into 32 bits any + * large enough filesystem may contain them, thus the slightly + * confusing looking conditional below. + */ + if (!(XFS_M(inode->i_sb)->m_flags & XFS_MOUNT_SMALL_INUMS) || + (XFS_M(inode->i_sb)->m_flags & XFS_MOUNT_32BITINODES)) + fileid_type |= XFS_FILEID_TYPE_64FLAG; + + /* + * Only encode if there is enough space given. In practice + * this means we can't export a filesystem with 64bit inodes + * over NFSv2 with the subtree_check export option; the other + * seven combinations work. The real answer is "don't use v2". + */ + len = xfs_fileid_length(fileid_type); + if (*max_len < len) { + *max_len = len; + return 255; + } + *max_len = len; + + switch (fileid_type) { + case FILEID_INO32_GEN_PARENT: + spin_lock(&dentry->d_lock); + fid->i32.parent_ino = dentry->d_parent->d_inode->i_ino; + fid->i32.parent_gen = dentry->d_parent->d_inode->i_generation; + spin_unlock(&dentry->d_lock); + /*FALLTHRU*/ + case FILEID_INO32_GEN: + fid->i32.ino = inode->i_ino; + fid->i32.gen = inode->i_generation; + break; + case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: + spin_lock(&dentry->d_lock); + fid64->parent_ino = dentry->d_parent->d_inode->i_ino; + fid64->parent_gen = dentry->d_parent->d_inode->i_generation; + spin_unlock(&dentry->d_lock); + /*FALLTHRU*/ + case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG: + fid64->ino = inode->i_ino; + fid64->gen = inode->i_generation; + break; + } + + return fileid_type; +} + +STATIC struct inode * +xfs_nfs_get_inode( + struct super_block *sb, + u64 ino, + u32 generation) + { + xfs_mount_t *mp = XFS_M(sb); + xfs_inode_t *ip; + int error; + + /* + * NFS can sometimes send requests for ino 0. Fail them gracefully. + */ + if (ino == 0) + return ERR_PTR(-ESTALE); + + /* + * The XFS_IGET_UNTRUSTED means that an invalid inode number is just + * fine and not an indication of a corrupted filesystem as clients can + * send invalid file handles and we have to handle it gracefully.. + */ + error = xfs_iget(mp, NULL, ino, XFS_IGET_UNTRUSTED, 0, &ip); + if (error) { + /* + * EINVAL means the inode cluster doesn't exist anymore. + * This implies the filehandle is stale, so we should + * translate it here. + * We don't use ESTALE directly down the chain to not + * confuse applications using bulkstat that expect EINVAL. + */ + if (error == EINVAL || error == ENOENT) + error = ESTALE; + return ERR_PTR(-error); + } + + if (ip->i_d.di_gen != generation) { + IRELE(ip); + return ERR_PTR(-ESTALE); + } + + return VFS_I(ip); +} + +STATIC struct dentry * +xfs_fs_fh_to_dentry(struct super_block *sb, struct fid *fid, + int fh_len, int fileid_type) +{ + struct xfs_fid64 *fid64 = (struct xfs_fid64 *)fid; + struct inode *inode = NULL; + + if (fh_len < xfs_fileid_length(fileid_type)) + return NULL; + + switch (fileid_type) { + case FILEID_INO32_GEN_PARENT: + case FILEID_INO32_GEN: + inode = xfs_nfs_get_inode(sb, fid->i32.ino, fid->i32.gen); + break; + case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: + case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG: + inode = xfs_nfs_get_inode(sb, fid64->ino, fid64->gen); + break; + } + + return d_obtain_alias(inode); +} + +STATIC struct dentry * +xfs_fs_fh_to_parent(struct super_block *sb, struct fid *fid, + int fh_len, int fileid_type) +{ + struct xfs_fid64 *fid64 = (struct xfs_fid64 *)fid; + struct inode *inode = NULL; + + switch (fileid_type) { + case FILEID_INO32_GEN_PARENT: + inode = xfs_nfs_get_inode(sb, fid->i32.parent_ino, + fid->i32.parent_gen); + break; + case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG: + inode = xfs_nfs_get_inode(sb, fid64->parent_ino, + fid64->parent_gen); + break; + } + + return d_obtain_alias(inode); +} + +STATIC struct dentry * +xfs_fs_get_parent( + struct dentry *child) +{ + int error; + struct xfs_inode *cip; + + error = xfs_lookup(XFS_I(child->d_inode), &xfs_name_dotdot, &cip, NULL); + if (unlikely(error)) + return ERR_PTR(-error); + + return d_obtain_alias(VFS_I(cip)); +} + +STATIC int +xfs_fs_nfs_commit_metadata( + struct inode *inode) +{ + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + int error = 0; + + xfs_ilock(ip, XFS_ILOCK_SHARED); + if (xfs_ipincount(ip)) { + error = _xfs_log_force_lsn(mp, ip->i_itemp->ili_last_lsn, + XFS_LOG_SYNC, NULL); + } + xfs_iunlock(ip, XFS_ILOCK_SHARED); + + return error; +} + +const struct export_operations xfs_export_operations = { + .encode_fh = xfs_fs_encode_fh, + .fh_to_dentry = xfs_fs_fh_to_dentry, + .fh_to_parent = xfs_fs_fh_to_parent, + .get_parent = xfs_fs_get_parent, + .commit_metadata = xfs_fs_nfs_commit_metadata, +}; diff --git a/fs/xfs/xfs_export.h b/fs/xfs/xfs_export.h new file mode 100644 index 000000000000..3272b6ae7a35 --- /dev/null +++ b/fs/xfs/xfs_export.h @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_EXPORT_H__ +#define __XFS_EXPORT_H__ + +/* + * Common defines for code related to exporting XFS filesystems over NFS. + * + * The NFS fileid goes out on the wire as an array of + * 32bit unsigned ints in host order. There are 5 possible + * formats. + * + * (1) fileid_type=0x00 + * (no fileid data; handled by the generic code) + * + * (2) fileid_type=0x01 + * inode-num + * generation + * + * (3) fileid_type=0x02 + * inode-num + * generation + * parent-inode-num + * parent-generation + * + * (4) fileid_type=0x81 + * inode-num-lo32 + * inode-num-hi32 + * generation + * + * (5) fileid_type=0x82 + * inode-num-lo32 + * inode-num-hi32 + * generation + * parent-inode-num-lo32 + * parent-inode-num-hi32 + * parent-generation + * + * Note, the NFS filehandle also includes an fsid portion which + * may have an inode number in it. That number is hardcoded to + * 32bits and there is no way for XFS to intercept it. In + * practice this means when exporting an XFS filesystem with 64bit + * inodes you should either export the mountpoint (rather than + * a subdirectory) or use the "fsid" export option. + */ + +struct xfs_fid64 { + u64 ino; + u32 gen; + u64 parent_ino; + u32 parent_gen; +} __attribute__((packed)); + +/* This flag goes on the wire. Don't play with it. */ +#define XFS_FILEID_TYPE_64FLAG 0x80 /* NFS fileid has 64bit inodes */ + +#endif /* __XFS_EXPORT_H__ */ diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c new file mode 100644 index 000000000000..7f7b42469ea7 --- /dev/null +++ b/fs/xfs/xfs_file.c @@ -0,0 +1,1096 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_trans.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_inode_item.h" +#include "xfs_bmap.h" +#include "xfs_error.h" +#include "xfs_vnodeops.h" +#include "xfs_da_btree.h" +#include "xfs_ioctl.h" +#include "xfs_trace.h" + +#include +#include + +static const struct vm_operations_struct xfs_file_vm_ops; + +/* + * Locking primitives for read and write IO paths to ensure we consistently use + * and order the inode->i_mutex, ip->i_lock and ip->i_iolock. + */ +static inline void +xfs_rw_ilock( + struct xfs_inode *ip, + int type) +{ + if (type & XFS_IOLOCK_EXCL) + mutex_lock(&VFS_I(ip)->i_mutex); + xfs_ilock(ip, type); +} + +static inline void +xfs_rw_iunlock( + struct xfs_inode *ip, + int type) +{ + xfs_iunlock(ip, type); + if (type & XFS_IOLOCK_EXCL) + mutex_unlock(&VFS_I(ip)->i_mutex); +} + +static inline void +xfs_rw_ilock_demote( + struct xfs_inode *ip, + int type) +{ + xfs_ilock_demote(ip, type); + if (type & XFS_IOLOCK_EXCL) + mutex_unlock(&VFS_I(ip)->i_mutex); +} + +/* + * xfs_iozero + * + * xfs_iozero clears the specified range of buffer supplied, + * and marks all the affected blocks as valid and modified. If + * an affected block is not allocated, it will be allocated. If + * an affected block is not completely overwritten, and is not + * valid before the operation, it will be read from disk before + * being partially zeroed. + */ +STATIC int +xfs_iozero( + struct xfs_inode *ip, /* inode */ + loff_t pos, /* offset in file */ + size_t count) /* size of data to zero */ +{ + struct page *page; + struct address_space *mapping; + int status; + + mapping = VFS_I(ip)->i_mapping; + do { + unsigned offset, bytes; + void *fsdata; + + offset = (pos & (PAGE_CACHE_SIZE -1)); /* Within page */ + bytes = PAGE_CACHE_SIZE - offset; + if (bytes > count) + bytes = count; + + status = pagecache_write_begin(NULL, mapping, pos, bytes, + AOP_FLAG_UNINTERRUPTIBLE, + &page, &fsdata); + if (status) + break; + + zero_user(page, offset, bytes); + + status = pagecache_write_end(NULL, mapping, pos, bytes, bytes, + page, fsdata); + WARN_ON(status <= 0); /* can't return less than zero! */ + pos += bytes; + count -= bytes; + status = 0; + } while (count); + + return (-status); +} + +STATIC int +xfs_file_fsync( + struct file *file, + loff_t start, + loff_t end, + int datasync) +{ + struct inode *inode = file->f_mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + int error = 0; + int log_flushed = 0; + + trace_xfs_file_fsync(ip); + + error = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (error) + return error; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -XFS_ERROR(EIO); + + xfs_iflags_clear(ip, XFS_ITRUNCATED); + + xfs_ilock(ip, XFS_IOLOCK_SHARED); + xfs_ioend_wait(ip); + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + + if (mp->m_flags & XFS_MOUNT_BARRIER) { + /* + * If we have an RT and/or log subvolume we need to make sure + * to flush the write cache the device used for file data + * first. This is to ensure newly written file data make + * it to disk before logging the new inode size in case of + * an extending write. + */ + if (XFS_IS_REALTIME_INODE(ip)) + xfs_blkdev_issue_flush(mp->m_rtdev_targp); + else if (mp->m_logdev_targp != mp->m_ddev_targp) + xfs_blkdev_issue_flush(mp->m_ddev_targp); + } + + /* + * We always need to make sure that the required inode state is safe on + * disk. The inode might be clean but we still might need to force the + * log because of committed transactions that haven't hit the disk yet. + * Likewise, there could be unflushed non-transactional changes to the + * inode core that have to go to disk and this requires us to issue + * a synchronous transaction to capture these changes correctly. + * + * This code relies on the assumption that if the i_update_core field + * of the inode is clear and the inode is unpinned then it is clean + * and no action is required. + */ + xfs_ilock(ip, XFS_ILOCK_SHARED); + + /* + * First check if the VFS inode is marked dirty. All the dirtying + * of non-transactional updates no goes through mark_inode_dirty*, + * which allows us to distinguish beteeen pure timestamp updates + * and i_size updates which need to be caught for fdatasync. + * After that also theck for the dirty state in the XFS inode, which + * might gets cleared when the inode gets written out via the AIL + * or xfs_iflush_cluster. + */ + if (((inode->i_state & I_DIRTY_DATASYNC) || + ((inode->i_state & I_DIRTY_SYNC) && !datasync)) && + ip->i_update_core) { + /* + * Kick off a transaction to log the inode core to get the + * updates. The sync transaction will also force the log. + */ + xfs_iunlock(ip, XFS_ILOCK_SHARED); + tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); + error = xfs_trans_reserve(tp, 0, + XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return -error; + } + xfs_ilock(ip, XFS_ILOCK_EXCL); + + /* + * Note - it's possible that we might have pushed ourselves out + * of the way during trans_reserve which would flush the inode. + * But there's no guarantee that the inode buffer has actually + * gone out yet (it's delwri). Plus the buffer could be pinned + * anyway if it's part of an inode in another recent + * transaction. So we play it safe and fire off the + * transaction anyway. + */ + xfs_trans_ijoin(tp, ip); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + xfs_trans_set_sync(tp); + error = _xfs_trans_commit(tp, 0, &log_flushed); + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } else { + /* + * Timestamps/size haven't changed since last inode flush or + * inode transaction commit. That means either nothing got + * written or a transaction committed which caught the updates. + * If the latter happened and the transaction hasn't hit the + * disk yet, the inode will be still be pinned. If it is, + * force the log. + */ + if (xfs_ipincount(ip)) { + error = _xfs_log_force_lsn(mp, + ip->i_itemp->ili_last_lsn, + XFS_LOG_SYNC, &log_flushed); + } + xfs_iunlock(ip, XFS_ILOCK_SHARED); + } + + /* + * If we only have a single device, and the log force about was + * a no-op we might have to flush the data device cache here. + * This can only happen for fdatasync/O_DSYNC if we were overwriting + * an already allocated file and thus do not have any metadata to + * commit. + */ + if ((mp->m_flags & XFS_MOUNT_BARRIER) && + mp->m_logdev_targp == mp->m_ddev_targp && + !XFS_IS_REALTIME_INODE(ip) && + !log_flushed) + xfs_blkdev_issue_flush(mp->m_ddev_targp); + + return -error; +} + +STATIC ssize_t +xfs_file_aio_read( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos) +{ + struct file *file = iocb->ki_filp; + struct inode *inode = file->f_mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + size_t size = 0; + ssize_t ret = 0; + int ioflags = 0; + xfs_fsize_t n; + unsigned long seg; + + XFS_STATS_INC(xs_read_calls); + + BUG_ON(iocb->ki_pos != pos); + + if (unlikely(file->f_flags & O_DIRECT)) + ioflags |= IO_ISDIRECT; + if (file->f_mode & FMODE_NOCMTIME) + ioflags |= IO_INVIS; + + /* START copy & waste from filemap.c */ + for (seg = 0; seg < nr_segs; seg++) { + const struct iovec *iv = &iovp[seg]; + + /* + * If any segment has a negative length, or the cumulative + * length ever wraps negative then return -EINVAL. + */ + size += iv->iov_len; + if (unlikely((ssize_t)(size|iv->iov_len) < 0)) + return XFS_ERROR(-EINVAL); + } + /* END copy & waste from filemap.c */ + + if (unlikely(ioflags & IO_ISDIRECT)) { + xfs_buftarg_t *target = + XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp; + if ((iocb->ki_pos & target->bt_smask) || + (size & target->bt_smask)) { + if (iocb->ki_pos == ip->i_size) + return 0; + return -XFS_ERROR(EINVAL); + } + } + + n = XFS_MAXIOFFSET(mp) - iocb->ki_pos; + if (n <= 0 || size == 0) + return 0; + + if (n < size) + size = n; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -EIO; + + if (unlikely(ioflags & IO_ISDIRECT)) { + xfs_rw_ilock(ip, XFS_IOLOCK_EXCL); + + if (inode->i_mapping->nrpages) { + ret = -xfs_flushinval_pages(ip, + (iocb->ki_pos & PAGE_CACHE_MASK), + -1, FI_REMAPF_LOCKED); + if (ret) { + xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL); + return ret; + } + } + xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); + } else + xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); + + trace_xfs_file_read(ip, size, iocb->ki_pos, ioflags); + + ret = generic_file_aio_read(iocb, iovp, nr_segs, iocb->ki_pos); + if (ret > 0) + XFS_STATS_ADD(xs_read_bytes, ret); + + xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); + return ret; +} + +STATIC ssize_t +xfs_file_splice_read( + struct file *infilp, + loff_t *ppos, + struct pipe_inode_info *pipe, + size_t count, + unsigned int flags) +{ + struct xfs_inode *ip = XFS_I(infilp->f_mapping->host); + int ioflags = 0; + ssize_t ret; + + XFS_STATS_INC(xs_read_calls); + + if (infilp->f_mode & FMODE_NOCMTIME) + ioflags |= IO_INVIS; + + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return -EIO; + + xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); + + trace_xfs_file_splice_read(ip, count, *ppos, ioflags); + + ret = generic_file_splice_read(infilp, ppos, pipe, count, flags); + if (ret > 0) + XFS_STATS_ADD(xs_read_bytes, ret); + + xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); + return ret; +} + +STATIC void +xfs_aio_write_isize_update( + struct inode *inode, + loff_t *ppos, + ssize_t bytes_written) +{ + struct xfs_inode *ip = XFS_I(inode); + xfs_fsize_t isize = i_size_read(inode); + + if (bytes_written > 0) + XFS_STATS_ADD(xs_write_bytes, bytes_written); + + if (unlikely(bytes_written < 0 && bytes_written != -EFAULT && + *ppos > isize)) + *ppos = isize; + + if (*ppos > ip->i_size) { + xfs_rw_ilock(ip, XFS_ILOCK_EXCL); + if (*ppos > ip->i_size) + ip->i_size = *ppos; + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); + } +} + +/* + * If this was a direct or synchronous I/O that failed (such as ENOSPC) then + * part of the I/O may have been written to disk before the error occurred. In + * this case the on-disk file size may have been adjusted beyond the in-memory + * file size and now needs to be truncated back. + */ +STATIC void +xfs_aio_write_newsize_update( + struct xfs_inode *ip) +{ + if (ip->i_new_size) { + xfs_rw_ilock(ip, XFS_ILOCK_EXCL); + ip->i_new_size = 0; + if (ip->i_d.di_size > ip->i_size) + ip->i_d.di_size = ip->i_size; + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); + } +} + +/* + * xfs_file_splice_write() does not use xfs_rw_ilock() because + * generic_file_splice_write() takes the i_mutex itself. This, in theory, + * couuld cause lock inversions between the aio_write path and the splice path + * if someone is doing concurrent splice(2) based writes and write(2) based + * writes to the same inode. The only real way to fix this is to re-implement + * the generic code here with correct locking orders. + */ +STATIC ssize_t +xfs_file_splice_write( + struct pipe_inode_info *pipe, + struct file *outfilp, + loff_t *ppos, + size_t count, + unsigned int flags) +{ + struct inode *inode = outfilp->f_mapping->host; + struct xfs_inode *ip = XFS_I(inode); + xfs_fsize_t new_size; + int ioflags = 0; + ssize_t ret; + + XFS_STATS_INC(xs_write_calls); + + if (outfilp->f_mode & FMODE_NOCMTIME) + ioflags |= IO_INVIS; + + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return -EIO; + + xfs_ilock(ip, XFS_IOLOCK_EXCL); + + new_size = *ppos + count; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + if (new_size > ip->i_size) + ip->i_new_size = new_size; + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + trace_xfs_file_splice_write(ip, count, *ppos, ioflags); + + ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags); + + xfs_aio_write_isize_update(inode, ppos, ret); + xfs_aio_write_newsize_update(ip); + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return ret; +} + +/* + * This routine is called to handle zeroing any space in the last + * block of the file that is beyond the EOF. We do this since the + * size is being increased without writing anything to that block + * and we don't want anyone to read the garbage on the disk. + */ +STATIC int /* error (positive) */ +xfs_zero_last_block( + xfs_inode_t *ip, + xfs_fsize_t offset, + xfs_fsize_t isize) +{ + xfs_fileoff_t last_fsb; + xfs_mount_t *mp = ip->i_mount; + int nimaps; + int zero_offset; + int zero_len; + int error = 0; + xfs_bmbt_irec_t imap; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + zero_offset = XFS_B_FSB_OFFSET(mp, isize); + if (zero_offset == 0) { + /* + * There are no extra bytes in the last block on disk to + * zero, so return. + */ + return 0; + } + + last_fsb = XFS_B_TO_FSBT(mp, isize); + nimaps = 1; + error = xfs_bmapi(NULL, ip, last_fsb, 1, 0, NULL, 0, &imap, + &nimaps, NULL); + if (error) { + return error; + } + ASSERT(nimaps > 0); + /* + * If the block underlying isize is just a hole, then there + * is nothing to zero. + */ + if (imap.br_startblock == HOLESTARTBLOCK) { + return 0; + } + /* + * Zero the part of the last block beyond the EOF, and write it + * out sync. We need to drop the ilock while we do this so we + * don't deadlock when the buffer cache calls back to us. + */ + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + zero_len = mp->m_sb.sb_blocksize - zero_offset; + if (isize + zero_len > offset) + zero_len = offset - isize; + error = xfs_iozero(ip, isize, zero_len); + + xfs_ilock(ip, XFS_ILOCK_EXCL); + ASSERT(error >= 0); + return error; +} + +/* + * Zero any on disk space between the current EOF and the new, + * larger EOF. This handles the normal case of zeroing the remainder + * of the last block in the file and the unusual case of zeroing blocks + * out beyond the size of the file. This second case only happens + * with fixed size extents and when the system crashes before the inode + * size was updated but after blocks were allocated. If fill is set, + * then any holes in the range are filled and zeroed. If not, the holes + * are left alone as holes. + */ + +int /* error (positive) */ +xfs_zero_eof( + xfs_inode_t *ip, + xfs_off_t offset, /* starting I/O offset */ + xfs_fsize_t isize) /* current inode size */ +{ + xfs_mount_t *mp = ip->i_mount; + xfs_fileoff_t start_zero_fsb; + xfs_fileoff_t end_zero_fsb; + xfs_fileoff_t zero_count_fsb; + xfs_fileoff_t last_fsb; + xfs_fileoff_t zero_off; + xfs_fsize_t zero_len; + int nimaps; + int error = 0; + xfs_bmbt_irec_t imap; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); + ASSERT(offset > isize); + + /* + * First handle zeroing the block on which isize resides. + * We only zero a part of that block so it is handled specially. + */ + error = xfs_zero_last_block(ip, offset, isize); + if (error) { + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); + return error; + } + + /* + * Calculate the range between the new size and the old + * where blocks needing to be zeroed may exist. To get the + * block where the last byte in the file currently resides, + * we need to subtract one from the size and truncate back + * to a block boundary. We subtract 1 in case the size is + * exactly on a block boundary. + */ + last_fsb = isize ? XFS_B_TO_FSBT(mp, isize - 1) : (xfs_fileoff_t)-1; + start_zero_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize); + end_zero_fsb = XFS_B_TO_FSBT(mp, offset - 1); + ASSERT((xfs_sfiloff_t)last_fsb < (xfs_sfiloff_t)start_zero_fsb); + if (last_fsb == end_zero_fsb) { + /* + * The size was only incremented on its last block. + * We took care of that above, so just return. + */ + return 0; + } + + ASSERT(start_zero_fsb <= end_zero_fsb); + while (start_zero_fsb <= end_zero_fsb) { + nimaps = 1; + zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; + error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb, + 0, NULL, 0, &imap, &nimaps, NULL); + if (error) { + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); + return error; + } + ASSERT(nimaps > 0); + + if (imap.br_state == XFS_EXT_UNWRITTEN || + imap.br_startblock == HOLESTARTBLOCK) { + /* + * This loop handles initializing pages that were + * partially initialized by the code below this + * loop. It basically zeroes the part of the page + * that sits on a hole and sets the page as P_HOLE + * and calls remapf if it is a mapped file. + */ + start_zero_fsb = imap.br_startoff + imap.br_blockcount; + ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); + continue; + } + + /* + * There are blocks we need to zero. + * Drop the inode lock while we're doing the I/O. + * We'll still have the iolock to protect us. + */ + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + zero_off = XFS_FSB_TO_B(mp, start_zero_fsb); + zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount); + + if ((zero_off + zero_len) > offset) + zero_len = offset - zero_off; + + error = xfs_iozero(ip, zero_off, zero_len); + if (error) { + goto out_lock; + } + + start_zero_fsb = imap.br_startoff + imap.br_blockcount; + ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); + + xfs_ilock(ip, XFS_ILOCK_EXCL); + } + + return 0; + +out_lock: + xfs_ilock(ip, XFS_ILOCK_EXCL); + ASSERT(error >= 0); + return error; +} + +/* + * Common pre-write limit and setup checks. + * + * Returns with iolock held according to @iolock. + */ +STATIC ssize_t +xfs_file_aio_write_checks( + struct file *file, + loff_t *pos, + size_t *count, + int *iolock) +{ + struct inode *inode = file->f_mapping->host; + struct xfs_inode *ip = XFS_I(inode); + xfs_fsize_t new_size; + int error = 0; + + error = generic_write_checks(file, pos, count, S_ISBLK(inode->i_mode)); + if (error) { + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL | *iolock); + *iolock = 0; + return error; + } + + new_size = *pos + *count; + if (new_size > ip->i_size) + ip->i_new_size = new_size; + + if (likely(!(file->f_mode & FMODE_NOCMTIME))) + file_update_time(file); + + /* + * If the offset is beyond the size of the file, we need to zero any + * blocks that fall between the existing EOF and the start of this + * write. + */ + if (*pos > ip->i_size) + error = -xfs_zero_eof(ip, *pos, ip->i_size); + + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); + if (error) + return error; + + /* + * If we're writing the file then make sure to clear the setuid and + * setgid bits if the process is not being run by root. This keeps + * people from modifying setuid and setgid binaries. + */ + return file_remove_suid(file); + +} + +/* + * xfs_file_dio_aio_write - handle direct IO writes + * + * Lock the inode appropriately to prepare for and issue a direct IO write. + * By separating it from the buffered write path we remove all the tricky to + * follow locking changes and looping. + * + * If there are cached pages or we're extending the file, we need IOLOCK_EXCL + * until we're sure the bytes at the new EOF have been zeroed and/or the cached + * pages are flushed out. + * + * In most cases the direct IO writes will be done holding IOLOCK_SHARED + * allowing them to be done in parallel with reads and other direct IO writes. + * However, if the IO is not aligned to filesystem blocks, the direct IO layer + * needs to do sub-block zeroing and that requires serialisation against other + * direct IOs to the same block. In this case we need to serialise the + * submission of the unaligned IOs so that we don't get racing block zeroing in + * the dio layer. To avoid the problem with aio, we also need to wait for + * outstanding IOs to complete so that unwritten extent conversion is completed + * before we try to map the overlapping block. This is currently implemented by + * hitting it with a big hammer (i.e. xfs_ioend_wait()). + * + * Returns with locks held indicated by @iolock and errors indicated by + * negative return values. + */ +STATIC ssize_t +xfs_file_dio_aio_write( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos, + size_t ocount, + int *iolock) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + ssize_t ret = 0; + size_t count = ocount; + int unaligned_io = 0; + struct xfs_buftarg *target = XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp; + + *iolock = 0; + if ((pos & target->bt_smask) || (count & target->bt_smask)) + return -XFS_ERROR(EINVAL); + + if ((pos & mp->m_blockmask) || ((pos + count) & mp->m_blockmask)) + unaligned_io = 1; + + if (unaligned_io || mapping->nrpages || pos > ip->i_size) + *iolock = XFS_IOLOCK_EXCL; + else + *iolock = XFS_IOLOCK_SHARED; + xfs_rw_ilock(ip, XFS_ILOCK_EXCL | *iolock); + + ret = xfs_file_aio_write_checks(file, &pos, &count, iolock); + if (ret) + return ret; + + if (mapping->nrpages) { + WARN_ON(*iolock != XFS_IOLOCK_EXCL); + ret = -xfs_flushinval_pages(ip, (pos & PAGE_CACHE_MASK), -1, + FI_REMAPF_LOCKED); + if (ret) + return ret; + } + + /* + * If we are doing unaligned IO, wait for all other IO to drain, + * otherwise demote the lock if we had to flush cached pages + */ + if (unaligned_io) + xfs_ioend_wait(ip); + else if (*iolock == XFS_IOLOCK_EXCL) { + xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); + *iolock = XFS_IOLOCK_SHARED; + } + + trace_xfs_file_direct_write(ip, count, iocb->ki_pos, 0); + ret = generic_file_direct_write(iocb, iovp, + &nr_segs, pos, &iocb->ki_pos, count, ocount); + + /* No fallback to buffered IO on errors for XFS. */ + ASSERT(ret < 0 || ret == count); + return ret; +} + +STATIC ssize_t +xfs_file_buffered_aio_write( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos, + size_t ocount, + int *iolock) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + ssize_t ret; + int enospc = 0; + size_t count = ocount; + + *iolock = XFS_IOLOCK_EXCL; + xfs_rw_ilock(ip, XFS_ILOCK_EXCL | *iolock); + + ret = xfs_file_aio_write_checks(file, &pos, &count, iolock); + if (ret) + return ret; + + /* We can write back this queue in page reclaim */ + current->backing_dev_info = mapping->backing_dev_info; + +write_retry: + trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, 0); + ret = generic_file_buffered_write(iocb, iovp, nr_segs, + pos, &iocb->ki_pos, count, ret); + /* + * if we just got an ENOSPC, flush the inode now we aren't holding any + * page locks and retry *once* + */ + if (ret == -ENOSPC && !enospc) { + ret = -xfs_flush_pages(ip, 0, -1, 0, FI_NONE); + if (ret) + return ret; + enospc = 1; + goto write_retry; + } + current->backing_dev_info = NULL; + return ret; +} + +STATIC ssize_t +xfs_file_aio_write( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + ssize_t ret; + int iolock; + size_t ocount = 0; + + XFS_STATS_INC(xs_write_calls); + + BUG_ON(iocb->ki_pos != pos); + + ret = generic_segment_checks(iovp, &nr_segs, &ocount, VERIFY_READ); + if (ret) + return ret; + + if (ocount == 0) + return 0; + + xfs_wait_for_freeze(ip->i_mount, SB_FREEZE_WRITE); + + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return -EIO; + + if (unlikely(file->f_flags & O_DIRECT)) + ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos, + ocount, &iolock); + else + ret = xfs_file_buffered_aio_write(iocb, iovp, nr_segs, pos, + ocount, &iolock); + + xfs_aio_write_isize_update(inode, &iocb->ki_pos, ret); + + if (ret <= 0) + goto out_unlock; + + /* Handle various SYNC-type writes */ + if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) { + loff_t end = pos + ret - 1; + int error; + + xfs_rw_iunlock(ip, iolock); + error = xfs_file_fsync(file, pos, end, + (file->f_flags & __O_SYNC) ? 0 : 1); + xfs_rw_ilock(ip, iolock); + if (error) + ret = error; + } + +out_unlock: + xfs_aio_write_newsize_update(ip); + xfs_rw_iunlock(ip, iolock); + return ret; +} + +STATIC long +xfs_file_fallocate( + struct file *file, + int mode, + loff_t offset, + loff_t len) +{ + struct inode *inode = file->f_path.dentry->d_inode; + long error; + loff_t new_size = 0; + xfs_flock64_t bf; + xfs_inode_t *ip = XFS_I(inode); + int cmd = XFS_IOC_RESVSP; + int attr_flags = XFS_ATTR_NOLOCK; + + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + return -EOPNOTSUPP; + + bf.l_whence = 0; + bf.l_start = offset; + bf.l_len = len; + + xfs_ilock(ip, XFS_IOLOCK_EXCL); + + if (mode & FALLOC_FL_PUNCH_HOLE) + cmd = XFS_IOC_UNRESVSP; + + /* check the new inode size is valid before allocating */ + if (!(mode & FALLOC_FL_KEEP_SIZE) && + offset + len > i_size_read(inode)) { + new_size = offset + len; + error = inode_newsize_ok(inode, new_size); + if (error) + goto out_unlock; + } + + if (file->f_flags & O_DSYNC) + attr_flags |= XFS_ATTR_SYNC; + + error = -xfs_change_file_space(ip, cmd, &bf, 0, attr_flags); + if (error) + goto out_unlock; + + /* Change file size if needed */ + if (new_size) { + struct iattr iattr; + + iattr.ia_valid = ATTR_SIZE; + iattr.ia_size = new_size; + error = -xfs_setattr_size(ip, &iattr, XFS_ATTR_NOLOCK); + } + +out_unlock: + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return error; +} + + +STATIC int +xfs_file_open( + struct inode *inode, + struct file *file) +{ + if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) + return -EFBIG; + if (XFS_FORCED_SHUTDOWN(XFS_M(inode->i_sb))) + return -EIO; + return 0; +} + +STATIC int +xfs_dir_open( + struct inode *inode, + struct file *file) +{ + struct xfs_inode *ip = XFS_I(inode); + int mode; + int error; + + error = xfs_file_open(inode, file); + if (error) + return error; + + /* + * If there are any blocks, read-ahead block 0 as we're almost + * certain to have the next operation be a read there. + */ + mode = xfs_ilock_map_shared(ip); + if (ip->i_d.di_nextents > 0) + xfs_da_reada_buf(NULL, ip, 0, XFS_DATA_FORK); + xfs_iunlock(ip, mode); + return 0; +} + +STATIC int +xfs_file_release( + struct inode *inode, + struct file *filp) +{ + return -xfs_release(XFS_I(inode)); +} + +STATIC int +xfs_file_readdir( + struct file *filp, + void *dirent, + filldir_t filldir) +{ + struct inode *inode = filp->f_path.dentry->d_inode; + xfs_inode_t *ip = XFS_I(inode); + int error; + size_t bufsize; + + /* + * The Linux API doesn't pass down the total size of the buffer + * we read into down to the filesystem. With the filldir concept + * it's not needed for correct information, but the XFS dir2 leaf + * code wants an estimate of the buffer size to calculate it's + * readahead window and size the buffers used for mapping to + * physical blocks. + * + * Try to give it an estimate that's good enough, maybe at some + * point we can change the ->readdir prototype to include the + * buffer size. For now we use the current glibc buffer size. + */ + bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size); + + error = xfs_readdir(ip, dirent, bufsize, + (xfs_off_t *)&filp->f_pos, filldir); + if (error) + return -error; + return 0; +} + +STATIC int +xfs_file_mmap( + struct file *filp, + struct vm_area_struct *vma) +{ + vma->vm_ops = &xfs_file_vm_ops; + vma->vm_flags |= VM_CAN_NONLINEAR; + + file_accessed(filp); + return 0; +} + +/* + * mmap()d file has taken write protection fault and is being made + * writable. We can set the page state up correctly for a writable + * page, which means we can do correct delalloc accounting (ENOSPC + * checking!) and unwritten extent mapping. + */ +STATIC int +xfs_vm_page_mkwrite( + struct vm_area_struct *vma, + struct vm_fault *vmf) +{ + return block_page_mkwrite(vma, vmf, xfs_get_blocks); +} + +const struct file_operations xfs_file_operations = { + .llseek = generic_file_llseek, + .read = do_sync_read, + .write = do_sync_write, + .aio_read = xfs_file_aio_read, + .aio_write = xfs_file_aio_write, + .splice_read = xfs_file_splice_read, + .splice_write = xfs_file_splice_write, + .unlocked_ioctl = xfs_file_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = xfs_file_compat_ioctl, +#endif + .mmap = xfs_file_mmap, + .open = xfs_file_open, + .release = xfs_file_release, + .fsync = xfs_file_fsync, + .fallocate = xfs_file_fallocate, +}; + +const struct file_operations xfs_dir_file_operations = { + .open = xfs_dir_open, + .read = generic_read_dir, + .readdir = xfs_file_readdir, + .llseek = generic_file_llseek, + .unlocked_ioctl = xfs_file_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = xfs_file_compat_ioctl, +#endif + .fsync = xfs_file_fsync, +}; + +static const struct vm_operations_struct xfs_file_vm_ops = { + .fault = filemap_fault, + .page_mkwrite = xfs_vm_page_mkwrite, +}; diff --git a/fs/xfs/xfs_fs_subr.c b/fs/xfs/xfs_fs_subr.c new file mode 100644 index 000000000000..ed88ed16811c --- /dev/null +++ b/fs/xfs/xfs_fs_subr.c @@ -0,0 +1,96 @@ +/* + * Copyright (c) 2000-2002,2005-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_vnodeops.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_trace.h" + +/* + * note: all filemap functions return negative error codes. These + * need to be inverted before returning to the xfs core functions. + */ +void +xfs_tosspages( + xfs_inode_t *ip, + xfs_off_t first, + xfs_off_t last, + int fiopt) +{ + /* can't toss partial tail pages, so mask them out */ + last &= ~(PAGE_SIZE - 1); + truncate_inode_pages_range(VFS_I(ip)->i_mapping, first, last - 1); +} + +int +xfs_flushinval_pages( + xfs_inode_t *ip, + xfs_off_t first, + xfs_off_t last, + int fiopt) +{ + struct address_space *mapping = VFS_I(ip)->i_mapping; + int ret = 0; + + trace_xfs_pagecache_inval(ip, first, last); + + xfs_iflags_clear(ip, XFS_ITRUNCATED); + ret = filemap_write_and_wait_range(mapping, first, + last == -1 ? LLONG_MAX : last); + if (!ret) + truncate_inode_pages_range(mapping, first, last); + return -ret; +} + +int +xfs_flush_pages( + xfs_inode_t *ip, + xfs_off_t first, + xfs_off_t last, + uint64_t flags, + int fiopt) +{ + struct address_space *mapping = VFS_I(ip)->i_mapping; + int ret = 0; + int ret2; + + xfs_iflags_clear(ip, XFS_ITRUNCATED); + ret = -filemap_fdatawrite_range(mapping, first, + last == -1 ? LLONG_MAX : last); + if (flags & XBF_ASYNC) + return ret; + ret2 = xfs_wait_on_pages(ip, first, last); + if (!ret) + ret = ret2; + return ret; +} + +int +xfs_wait_on_pages( + xfs_inode_t *ip, + xfs_off_t first, + xfs_off_t last) +{ + struct address_space *mapping = VFS_I(ip)->i_mapping; + + if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) { + return -filemap_fdatawait_range(mapping, first, + last == -1 ? ip->i_size - 1 : last); + } + return 0; +} diff --git a/fs/xfs/xfs_globals.c b/fs/xfs/xfs_globals.c new file mode 100644 index 000000000000..76e81cff70b9 --- /dev/null +++ b/fs/xfs/xfs_globals.c @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_sysctl.h" + +/* + * Tunable XFS parameters. xfs_params is required even when CONFIG_SYSCTL=n, + * other XFS code uses these values. Times are measured in centisecs (i.e. + * 100ths of a second). + */ +xfs_param_t xfs_params = { + /* MIN DFLT MAX */ + .sgid_inherit = { 0, 0, 1 }, + .symlink_mode = { 0, 0, 1 }, + .panic_mask = { 0, 0, 255 }, + .error_level = { 0, 3, 11 }, + .syncd_timer = { 1*100, 30*100, 7200*100}, + .stats_clear = { 0, 0, 1 }, + .inherit_sync = { 0, 1, 1 }, + .inherit_nodump = { 0, 1, 1 }, + .inherit_noatim = { 0, 1, 1 }, + .xfs_buf_timer = { 100/2, 1*100, 30*100 }, + .xfs_buf_age = { 1*100, 15*100, 7200*100}, + .inherit_nosym = { 0, 0, 1 }, + .rotorstep = { 1, 1, 255 }, + .inherit_nodfrg = { 0, 1, 1 }, + .fstrm_timer = { 1, 30*100, 3600*100}, +}; diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c new file mode 100644 index 000000000000..f7ce7debe14c --- /dev/null +++ b/fs/xfs/xfs_ioctl.c @@ -0,0 +1,1556 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_ioctl.h" +#include "xfs_rtalloc.h" +#include "xfs_itable.h" +#include "xfs_error.h" +#include "xfs_attr.h" +#include "xfs_bmap.h" +#include "xfs_buf_item.h" +#include "xfs_utils.h" +#include "xfs_dfrag.h" +#include "xfs_fsops.h" +#include "xfs_vnodeops.h" +#include "xfs_discard.h" +#include "xfs_quota.h" +#include "xfs_inode_item.h" +#include "xfs_export.h" +#include "xfs_trace.h" + +#include +#include +#include +#include +#include +#include +#include + +/* + * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to + * a file or fs handle. + * + * XFS_IOC_PATH_TO_FSHANDLE + * returns fs handle for a mount point or path within that mount point + * XFS_IOC_FD_TO_HANDLE + * returns full handle for a FD opened in user space + * XFS_IOC_PATH_TO_HANDLE + * returns full handle for a path + */ +int +xfs_find_handle( + unsigned int cmd, + xfs_fsop_handlereq_t *hreq) +{ + int hsize; + xfs_handle_t handle; + struct inode *inode; + struct file *file = NULL; + struct path path; + int error; + struct xfs_inode *ip; + + if (cmd == XFS_IOC_FD_TO_HANDLE) { + file = fget(hreq->fd); + if (!file) + return -EBADF; + inode = file->f_path.dentry->d_inode; + } else { + error = user_lpath((const char __user *)hreq->path, &path); + if (error) + return error; + inode = path.dentry->d_inode; + } + ip = XFS_I(inode); + + /* + * We can only generate handles for inodes residing on a XFS filesystem, + * and only for regular files, directories or symbolic links. + */ + error = -EINVAL; + if (inode->i_sb->s_magic != XFS_SB_MAGIC) + goto out_put; + + error = -EBADF; + if (!S_ISREG(inode->i_mode) && + !S_ISDIR(inode->i_mode) && + !S_ISLNK(inode->i_mode)) + goto out_put; + + + memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); + + if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { + /* + * This handle only contains an fsid, zero the rest. + */ + memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); + hsize = sizeof(xfs_fsid_t); + } else { + int lock_mode; + + lock_mode = xfs_ilock_map_shared(ip); + handle.ha_fid.fid_len = sizeof(xfs_fid_t) - + sizeof(handle.ha_fid.fid_len); + handle.ha_fid.fid_pad = 0; + handle.ha_fid.fid_gen = ip->i_d.di_gen; + handle.ha_fid.fid_ino = ip->i_ino; + xfs_iunlock_map_shared(ip, lock_mode); + + hsize = XFS_HSIZE(handle); + } + + error = -EFAULT; + if (copy_to_user(hreq->ohandle, &handle, hsize) || + copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) + goto out_put; + + error = 0; + + out_put: + if (cmd == XFS_IOC_FD_TO_HANDLE) + fput(file); + else + path_put(&path); + return error; +} + +/* + * No need to do permission checks on the various pathname components + * as the handle operations are privileged. + */ +STATIC int +xfs_handle_acceptable( + void *context, + struct dentry *dentry) +{ + return 1; +} + +/* + * Convert userspace handle data into a dentry. + */ +struct dentry * +xfs_handle_to_dentry( + struct file *parfilp, + void __user *uhandle, + u32 hlen) +{ + xfs_handle_t handle; + struct xfs_fid64 fid; + + /* + * Only allow handle opens under a directory. + */ + if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) + return ERR_PTR(-ENOTDIR); + + if (hlen != sizeof(xfs_handle_t)) + return ERR_PTR(-EINVAL); + if (copy_from_user(&handle, uhandle, hlen)) + return ERR_PTR(-EFAULT); + if (handle.ha_fid.fid_len != + sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) + return ERR_PTR(-EINVAL); + + memset(&fid, 0, sizeof(struct fid)); + fid.ino = handle.ha_fid.fid_ino; + fid.gen = handle.ha_fid.fid_gen; + + return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, + FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, + xfs_handle_acceptable, NULL); +} + +STATIC struct dentry * +xfs_handlereq_to_dentry( + struct file *parfilp, + xfs_fsop_handlereq_t *hreq) +{ + return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); +} + +int +xfs_open_by_handle( + struct file *parfilp, + xfs_fsop_handlereq_t *hreq) +{ + const struct cred *cred = current_cred(); + int error; + int fd; + int permflag; + struct file *filp; + struct inode *inode; + struct dentry *dentry; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + + dentry = xfs_handlereq_to_dentry(parfilp, hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + inode = dentry->d_inode; + + /* Restrict xfs_open_by_handle to directories & regular files. */ + if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { + error = -XFS_ERROR(EPERM); + goto out_dput; + } + +#if BITS_PER_LONG != 32 + hreq->oflags |= O_LARGEFILE; +#endif + + /* Put open permission in namei format. */ + permflag = hreq->oflags; + if ((permflag+1) & O_ACCMODE) + permflag++; + if (permflag & O_TRUNC) + permflag |= 2; + + if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && + (permflag & FMODE_WRITE) && IS_APPEND(inode)) { + error = -XFS_ERROR(EPERM); + goto out_dput; + } + + if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { + error = -XFS_ERROR(EACCES); + goto out_dput; + } + + /* Can't write directories. */ + if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { + error = -XFS_ERROR(EISDIR); + goto out_dput; + } + + fd = get_unused_fd(); + if (fd < 0) { + error = fd; + goto out_dput; + } + + filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), + hreq->oflags, cred); + if (IS_ERR(filp)) { + put_unused_fd(fd); + return PTR_ERR(filp); + } + + if (S_ISREG(inode->i_mode)) { + filp->f_flags |= O_NOATIME; + filp->f_mode |= FMODE_NOCMTIME; + } + + fd_install(fd, filp); + return fd; + + out_dput: + dput(dentry); + return error; +} + +/* + * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's + * unused first argument. + */ +STATIC int +do_readlink( + char __user *buffer, + int buflen, + const char *link) +{ + int len; + + len = PTR_ERR(link); + if (IS_ERR(link)) + goto out; + + len = strlen(link); + if (len > (unsigned) buflen) + len = buflen; + if (copy_to_user(buffer, link, len)) + len = -EFAULT; + out: + return len; +} + + +int +xfs_readlink_by_handle( + struct file *parfilp, + xfs_fsop_handlereq_t *hreq) +{ + struct dentry *dentry; + __u32 olen; + void *link; + int error; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + + dentry = xfs_handlereq_to_dentry(parfilp, hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + + /* Restrict this handle operation to symlinks only. */ + if (!S_ISLNK(dentry->d_inode->i_mode)) { + error = -XFS_ERROR(EINVAL); + goto out_dput; + } + + if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { + error = -XFS_ERROR(EFAULT); + goto out_dput; + } + + link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); + if (!link) { + error = -XFS_ERROR(ENOMEM); + goto out_dput; + } + + error = -xfs_readlink(XFS_I(dentry->d_inode), link); + if (error) + goto out_kfree; + error = do_readlink(hreq->ohandle, olen, link); + if (error) + goto out_kfree; + + out_kfree: + kfree(link); + out_dput: + dput(dentry); + return error; +} + +STATIC int +xfs_fssetdm_by_handle( + struct file *parfilp, + void __user *arg) +{ + int error; + struct fsdmidata fsd; + xfs_fsop_setdm_handlereq_t dmhreq; + struct dentry *dentry; + + if (!capable(CAP_MKNOD)) + return -XFS_ERROR(EPERM); + if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) + return -XFS_ERROR(EFAULT); + + dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + + if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { + error = -XFS_ERROR(EPERM); + goto out; + } + + if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { + error = -XFS_ERROR(EFAULT); + goto out; + } + + error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, + fsd.fsd_dmstate); + + out: + dput(dentry); + return error; +} + +STATIC int +xfs_attrlist_by_handle( + struct file *parfilp, + void __user *arg) +{ + int error = -ENOMEM; + attrlist_cursor_kern_t *cursor; + xfs_fsop_attrlist_handlereq_t al_hreq; + struct dentry *dentry; + char *kbuf; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) + return -XFS_ERROR(EFAULT); + if (al_hreq.buflen > XATTR_LIST_MAX) + return -XFS_ERROR(EINVAL); + + /* + * Reject flags, only allow namespaces. + */ + if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) + return -XFS_ERROR(EINVAL); + + dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + + kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL); + if (!kbuf) + goto out_dput; + + cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; + error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, + al_hreq.flags, cursor); + if (error) + goto out_kfree; + + if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) + error = -EFAULT; + + out_kfree: + kfree(kbuf); + out_dput: + dput(dentry); + return error; +} + +int +xfs_attrmulti_attr_get( + struct inode *inode, + unsigned char *name, + unsigned char __user *ubuf, + __uint32_t *len, + __uint32_t flags) +{ + unsigned char *kbuf; + int error = EFAULT; + + if (*len > XATTR_SIZE_MAX) + return EINVAL; + kbuf = kmalloc(*len, GFP_KERNEL); + if (!kbuf) + return ENOMEM; + + error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); + if (error) + goto out_kfree; + + if (copy_to_user(ubuf, kbuf, *len)) + error = EFAULT; + + out_kfree: + kfree(kbuf); + return error; +} + +int +xfs_attrmulti_attr_set( + struct inode *inode, + unsigned char *name, + const unsigned char __user *ubuf, + __uint32_t len, + __uint32_t flags) +{ + unsigned char *kbuf; + int error = EFAULT; + + if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) + return EPERM; + if (len > XATTR_SIZE_MAX) + return EINVAL; + + kbuf = memdup_user(ubuf, len); + if (IS_ERR(kbuf)) + return PTR_ERR(kbuf); + + error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); + + return error; +} + +int +xfs_attrmulti_attr_remove( + struct inode *inode, + unsigned char *name, + __uint32_t flags) +{ + if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) + return EPERM; + return xfs_attr_remove(XFS_I(inode), name, flags); +} + +STATIC int +xfs_attrmulti_by_handle( + struct file *parfilp, + void __user *arg) +{ + int error; + xfs_attr_multiop_t *ops; + xfs_fsop_attrmulti_handlereq_t am_hreq; + struct dentry *dentry; + unsigned int i, size; + unsigned char *attr_name; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) + return -XFS_ERROR(EFAULT); + + /* overflow check */ + if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) + return -E2BIG; + + dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + + error = E2BIG; + size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); + if (!size || size > 16 * PAGE_SIZE) + goto out_dput; + + ops = memdup_user(am_hreq.ops, size); + if (IS_ERR(ops)) { + error = PTR_ERR(ops); + goto out_dput; + } + + attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); + if (!attr_name) + goto out_kfree_ops; + + error = 0; + for (i = 0; i < am_hreq.opcount; i++) { + ops[i].am_error = strncpy_from_user((char *)attr_name, + ops[i].am_attrname, MAXNAMELEN); + if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) + error = -ERANGE; + if (ops[i].am_error < 0) + break; + + switch (ops[i].am_opcode) { + case ATTR_OP_GET: + ops[i].am_error = xfs_attrmulti_attr_get( + dentry->d_inode, attr_name, + ops[i].am_attrvalue, &ops[i].am_length, + ops[i].am_flags); + break; + case ATTR_OP_SET: + ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); + if (ops[i].am_error) + break; + ops[i].am_error = xfs_attrmulti_attr_set( + dentry->d_inode, attr_name, + ops[i].am_attrvalue, ops[i].am_length, + ops[i].am_flags); + mnt_drop_write(parfilp->f_path.mnt); + break; + case ATTR_OP_REMOVE: + ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); + if (ops[i].am_error) + break; + ops[i].am_error = xfs_attrmulti_attr_remove( + dentry->d_inode, attr_name, + ops[i].am_flags); + mnt_drop_write(parfilp->f_path.mnt); + break; + default: + ops[i].am_error = EINVAL; + } + } + + if (copy_to_user(am_hreq.ops, ops, size)) + error = XFS_ERROR(EFAULT); + + kfree(attr_name); + out_kfree_ops: + kfree(ops); + out_dput: + dput(dentry); + return -error; +} + +int +xfs_ioc_space( + struct xfs_inode *ip, + struct inode *inode, + struct file *filp, + int ioflags, + unsigned int cmd, + xfs_flock64_t *bf) +{ + int attr_flags = 0; + int error; + + /* + * Only allow the sys admin to reserve space unless + * unwritten extents are enabled. + */ + if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && + !capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + + if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) + return -XFS_ERROR(EPERM); + + if (!(filp->f_mode & FMODE_WRITE)) + return -XFS_ERROR(EBADF); + + if (!S_ISREG(inode->i_mode)) + return -XFS_ERROR(EINVAL); + + if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) + attr_flags |= XFS_ATTR_NONBLOCK; + + if (filp->f_flags & O_DSYNC) + attr_flags |= XFS_ATTR_SYNC; + + if (ioflags & IO_INVIS) + attr_flags |= XFS_ATTR_DMI; + + error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); + return -error; +} + +STATIC int +xfs_ioc_bulkstat( + xfs_mount_t *mp, + unsigned int cmd, + void __user *arg) +{ + xfs_fsop_bulkreq_t bulkreq; + int count; /* # of records returned */ + xfs_ino_t inlast; /* last inode number */ + int done; + int error; + + /* done = 1 if there are more stats to get and if bulkstat */ + /* should be called again (unused here, but used in dmapi) */ + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -XFS_ERROR(EIO); + + if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) + return -XFS_ERROR(EFAULT); + + if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) + return -XFS_ERROR(EFAULT); + + if ((count = bulkreq.icount) <= 0) + return -XFS_ERROR(EINVAL); + + if (bulkreq.ubuffer == NULL) + return -XFS_ERROR(EINVAL); + + if (cmd == XFS_IOC_FSINUMBERS) + error = xfs_inumbers(mp, &inlast, &count, + bulkreq.ubuffer, xfs_inumbers_fmt); + else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) + error = xfs_bulkstat_single(mp, &inlast, + bulkreq.ubuffer, &done); + else /* XFS_IOC_FSBULKSTAT */ + error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, + sizeof(xfs_bstat_t), bulkreq.ubuffer, + &done); + + if (error) + return -error; + + if (bulkreq.ocount != NULL) { + if (copy_to_user(bulkreq.lastip, &inlast, + sizeof(xfs_ino_t))) + return -XFS_ERROR(EFAULT); + + if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) + return -XFS_ERROR(EFAULT); + } + + return 0; +} + +STATIC int +xfs_ioc_fsgeometry_v1( + xfs_mount_t *mp, + void __user *arg) +{ + xfs_fsop_geom_t fsgeo; + int error; + + error = xfs_fs_geometry(mp, &fsgeo, 3); + if (error) + return -error; + + /* + * Caller should have passed an argument of type + * xfs_fsop_geom_v1_t. This is a proper subset of the + * xfs_fsop_geom_t that xfs_fs_geometry() fills in. + */ + if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) + return -XFS_ERROR(EFAULT); + return 0; +} + +STATIC int +xfs_ioc_fsgeometry( + xfs_mount_t *mp, + void __user *arg) +{ + xfs_fsop_geom_t fsgeo; + int error; + + error = xfs_fs_geometry(mp, &fsgeo, 4); + if (error) + return -error; + + if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) + return -XFS_ERROR(EFAULT); + return 0; +} + +/* + * Linux extended inode flags interface. + */ + +STATIC unsigned int +xfs_merge_ioc_xflags( + unsigned int flags, + unsigned int start) +{ + unsigned int xflags = start; + + if (flags & FS_IMMUTABLE_FL) + xflags |= XFS_XFLAG_IMMUTABLE; + else + xflags &= ~XFS_XFLAG_IMMUTABLE; + if (flags & FS_APPEND_FL) + xflags |= XFS_XFLAG_APPEND; + else + xflags &= ~XFS_XFLAG_APPEND; + if (flags & FS_SYNC_FL) + xflags |= XFS_XFLAG_SYNC; + else + xflags &= ~XFS_XFLAG_SYNC; + if (flags & FS_NOATIME_FL) + xflags |= XFS_XFLAG_NOATIME; + else + xflags &= ~XFS_XFLAG_NOATIME; + if (flags & FS_NODUMP_FL) + xflags |= XFS_XFLAG_NODUMP; + else + xflags &= ~XFS_XFLAG_NODUMP; + + return xflags; +} + +STATIC unsigned int +xfs_di2lxflags( + __uint16_t di_flags) +{ + unsigned int flags = 0; + + if (di_flags & XFS_DIFLAG_IMMUTABLE) + flags |= FS_IMMUTABLE_FL; + if (di_flags & XFS_DIFLAG_APPEND) + flags |= FS_APPEND_FL; + if (di_flags & XFS_DIFLAG_SYNC) + flags |= FS_SYNC_FL; + if (di_flags & XFS_DIFLAG_NOATIME) + flags |= FS_NOATIME_FL; + if (di_flags & XFS_DIFLAG_NODUMP) + flags |= FS_NODUMP_FL; + return flags; +} + +STATIC int +xfs_ioc_fsgetxattr( + xfs_inode_t *ip, + int attr, + void __user *arg) +{ + struct fsxattr fa; + + memset(&fa, 0, sizeof(struct fsxattr)); + + xfs_ilock(ip, XFS_ILOCK_SHARED); + fa.fsx_xflags = xfs_ip2xflags(ip); + fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; + fa.fsx_projid = xfs_get_projid(ip); + + if (attr) { + if (ip->i_afp) { + if (ip->i_afp->if_flags & XFS_IFEXTENTS) + fa.fsx_nextents = ip->i_afp->if_bytes / + sizeof(xfs_bmbt_rec_t); + else + fa.fsx_nextents = ip->i_d.di_anextents; + } else + fa.fsx_nextents = 0; + } else { + if (ip->i_df.if_flags & XFS_IFEXTENTS) + fa.fsx_nextents = ip->i_df.if_bytes / + sizeof(xfs_bmbt_rec_t); + else + fa.fsx_nextents = ip->i_d.di_nextents; + } + xfs_iunlock(ip, XFS_ILOCK_SHARED); + + if (copy_to_user(arg, &fa, sizeof(fa))) + return -EFAULT; + return 0; +} + +STATIC void +xfs_set_diflags( + struct xfs_inode *ip, + unsigned int xflags) +{ + unsigned int di_flags; + + /* can't set PREALLOC this way, just preserve it */ + di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); + if (xflags & XFS_XFLAG_IMMUTABLE) + di_flags |= XFS_DIFLAG_IMMUTABLE; + if (xflags & XFS_XFLAG_APPEND) + di_flags |= XFS_DIFLAG_APPEND; + if (xflags & XFS_XFLAG_SYNC) + di_flags |= XFS_DIFLAG_SYNC; + if (xflags & XFS_XFLAG_NOATIME) + di_flags |= XFS_DIFLAG_NOATIME; + if (xflags & XFS_XFLAG_NODUMP) + di_flags |= XFS_DIFLAG_NODUMP; + if (xflags & XFS_XFLAG_PROJINHERIT) + di_flags |= XFS_DIFLAG_PROJINHERIT; + if (xflags & XFS_XFLAG_NODEFRAG) + di_flags |= XFS_DIFLAG_NODEFRAG; + if (xflags & XFS_XFLAG_FILESTREAM) + di_flags |= XFS_DIFLAG_FILESTREAM; + if (S_ISDIR(ip->i_d.di_mode)) { + if (xflags & XFS_XFLAG_RTINHERIT) + di_flags |= XFS_DIFLAG_RTINHERIT; + if (xflags & XFS_XFLAG_NOSYMLINKS) + di_flags |= XFS_DIFLAG_NOSYMLINKS; + if (xflags & XFS_XFLAG_EXTSZINHERIT) + di_flags |= XFS_DIFLAG_EXTSZINHERIT; + } else if (S_ISREG(ip->i_d.di_mode)) { + if (xflags & XFS_XFLAG_REALTIME) + di_flags |= XFS_DIFLAG_REALTIME; + if (xflags & XFS_XFLAG_EXTSIZE) + di_flags |= XFS_DIFLAG_EXTSIZE; + } + + ip->i_d.di_flags = di_flags; +} + +STATIC void +xfs_diflags_to_linux( + struct xfs_inode *ip) +{ + struct inode *inode = VFS_I(ip); + unsigned int xflags = xfs_ip2xflags(ip); + + if (xflags & XFS_XFLAG_IMMUTABLE) + inode->i_flags |= S_IMMUTABLE; + else + inode->i_flags &= ~S_IMMUTABLE; + if (xflags & XFS_XFLAG_APPEND) + inode->i_flags |= S_APPEND; + else + inode->i_flags &= ~S_APPEND; + if (xflags & XFS_XFLAG_SYNC) + inode->i_flags |= S_SYNC; + else + inode->i_flags &= ~S_SYNC; + if (xflags & XFS_XFLAG_NOATIME) + inode->i_flags |= S_NOATIME; + else + inode->i_flags &= ~S_NOATIME; +} + +#define FSX_PROJID 1 +#define FSX_EXTSIZE 2 +#define FSX_XFLAGS 4 +#define FSX_NONBLOCK 8 + +STATIC int +xfs_ioctl_setattr( + xfs_inode_t *ip, + struct fsxattr *fa, + int mask) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + unsigned int lock_flags = 0; + struct xfs_dquot *udqp = NULL; + struct xfs_dquot *gdqp = NULL; + struct xfs_dquot *olddquot = NULL; + int code; + + trace_xfs_ioctl_setattr(ip); + + if (mp->m_flags & XFS_MOUNT_RDONLY) + return XFS_ERROR(EROFS); + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + /* + * Disallow 32bit project ids when projid32bit feature is not enabled. + */ + if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && + !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) + return XFS_ERROR(EINVAL); + + /* + * If disk quotas is on, we make sure that the dquots do exist on disk, + * before we start any other transactions. Trying to do this later + * is messy. We don't care to take a readlock to look at the ids + * in inode here, because we can't hold it across the trans_reserve. + * If the IDs do change before we take the ilock, we're covered + * because the i_*dquot fields will get updated anyway. + */ + if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { + code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, + ip->i_d.di_gid, fa->fsx_projid, + XFS_QMOPT_PQUOTA, &udqp, &gdqp); + if (code) + return code; + } + + /* + * For the other attributes, we acquire the inode lock and + * first do an error checking pass. + */ + tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); + code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); + if (code) + goto error_return; + + lock_flags = XFS_ILOCK_EXCL; + xfs_ilock(ip, lock_flags); + + /* + * CAP_FOWNER overrides the following restrictions: + * + * The user ID of the calling process must be equal + * to the file owner ID, except in cases where the + * CAP_FSETID capability is applicable. + */ + if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { + code = XFS_ERROR(EPERM); + goto error_return; + } + + /* + * Do a quota reservation only if projid is actually going to change. + */ + if (mask & FSX_PROJID) { + if (XFS_IS_QUOTA_RUNNING(mp) && + XFS_IS_PQUOTA_ON(mp) && + xfs_get_projid(ip) != fa->fsx_projid) { + ASSERT(tp); + code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, + capable(CAP_FOWNER) ? + XFS_QMOPT_FORCE_RES : 0); + if (code) /* out of quota */ + goto error_return; + } + } + + if (mask & FSX_EXTSIZE) { + /* + * Can't change extent size if any extents are allocated. + */ + if (ip->i_d.di_nextents && + ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != + fa->fsx_extsize)) { + code = XFS_ERROR(EINVAL); /* EFBIG? */ + goto error_return; + } + + /* + * Extent size must be a multiple of the appropriate block + * size, if set at all. It must also be smaller than the + * maximum extent size supported by the filesystem. + * + * Also, for non-realtime files, limit the extent size hint to + * half the size of the AGs in the filesystem so alignment + * doesn't result in extents larger than an AG. + */ + if (fa->fsx_extsize != 0) { + xfs_extlen_t size; + xfs_fsblock_t extsize_fsb; + + extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); + if (extsize_fsb > MAXEXTLEN) { + code = XFS_ERROR(EINVAL); + goto error_return; + } + + if (XFS_IS_REALTIME_INODE(ip) || + ((mask & FSX_XFLAGS) && + (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { + size = mp->m_sb.sb_rextsize << + mp->m_sb.sb_blocklog; + } else { + size = mp->m_sb.sb_blocksize; + if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { + code = XFS_ERROR(EINVAL); + goto error_return; + } + } + + if (fa->fsx_extsize % size) { + code = XFS_ERROR(EINVAL); + goto error_return; + } + } + } + + + if (mask & FSX_XFLAGS) { + /* + * Can't change realtime flag if any extents are allocated. + */ + if ((ip->i_d.di_nextents || ip->i_delayed_blks) && + (XFS_IS_REALTIME_INODE(ip)) != + (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { + code = XFS_ERROR(EINVAL); /* EFBIG? */ + goto error_return; + } + + /* + * If realtime flag is set then must have realtime data. + */ + if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { + if ((mp->m_sb.sb_rblocks == 0) || + (mp->m_sb.sb_rextsize == 0) || + (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { + code = XFS_ERROR(EINVAL); + goto error_return; + } + } + + /* + * Can't modify an immutable/append-only file unless + * we have appropriate permission. + */ + if ((ip->i_d.di_flags & + (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || + (fa->fsx_xflags & + (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && + !capable(CAP_LINUX_IMMUTABLE)) { + code = XFS_ERROR(EPERM); + goto error_return; + } + } + + xfs_trans_ijoin(tp, ip); + + /* + * Change file ownership. Must be the owner or privileged. + */ + if (mask & FSX_PROJID) { + /* + * CAP_FSETID overrides the following restrictions: + * + * The set-user-ID and set-group-ID bits of a file will be + * cleared upon successful return from chown() + */ + if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && + !capable(CAP_FSETID)) + ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); + + /* + * Change the ownerships and register quota modifications + * in the transaction. + */ + if (xfs_get_projid(ip) != fa->fsx_projid) { + if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { + olddquot = xfs_qm_vop_chown(tp, ip, + &ip->i_gdquot, gdqp); + } + xfs_set_projid(ip, fa->fsx_projid); + + /* + * We may have to rev the inode as well as + * the superblock version number since projids didn't + * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. + */ + if (ip->i_d.di_version == 1) + xfs_bump_ino_vers2(tp, ip); + } + + } + + if (mask & FSX_EXTSIZE) + ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; + if (mask & FSX_XFLAGS) { + xfs_set_diflags(ip, fa->fsx_xflags); + xfs_diflags_to_linux(ip); + } + + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + + XFS_STATS_INC(xs_ig_attrchg); + + /* + * If this is a synchronous mount, make sure that the + * transaction goes to disk before returning to the user. + * This is slightly sub-optimal in that truncates require + * two sync transactions instead of one for wsync filesystems. + * One for the truncate and one for the timestamps since we + * don't want to change the timestamps unless we're sure the + * truncate worked. Truncates are less than 1% of the laddis + * mix so this probably isn't worth the trouble to optimize. + */ + if (mp->m_flags & XFS_MOUNT_WSYNC) + xfs_trans_set_sync(tp); + code = xfs_trans_commit(tp, 0); + xfs_iunlock(ip, lock_flags); + + /* + * Release any dquot(s) the inode had kept before chown. + */ + xfs_qm_dqrele(olddquot); + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + + return code; + + error_return: + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + xfs_trans_cancel(tp, 0); + if (lock_flags) + xfs_iunlock(ip, lock_flags); + return code; +} + +STATIC int +xfs_ioc_fssetxattr( + xfs_inode_t *ip, + struct file *filp, + void __user *arg) +{ + struct fsxattr fa; + unsigned int mask; + + if (copy_from_user(&fa, arg, sizeof(fa))) + return -EFAULT; + + mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; + if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) + mask |= FSX_NONBLOCK; + + return -xfs_ioctl_setattr(ip, &fa, mask); +} + +STATIC int +xfs_ioc_getxflags( + xfs_inode_t *ip, + void __user *arg) +{ + unsigned int flags; + + flags = xfs_di2lxflags(ip->i_d.di_flags); + if (copy_to_user(arg, &flags, sizeof(flags))) + return -EFAULT; + return 0; +} + +STATIC int +xfs_ioc_setxflags( + xfs_inode_t *ip, + struct file *filp, + void __user *arg) +{ + struct fsxattr fa; + unsigned int flags; + unsigned int mask; + + if (copy_from_user(&flags, arg, sizeof(flags))) + return -EFAULT; + + if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ + FS_NOATIME_FL | FS_NODUMP_FL | \ + FS_SYNC_FL)) + return -EOPNOTSUPP; + + mask = FSX_XFLAGS; + if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) + mask |= FSX_NONBLOCK; + fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); + + return -xfs_ioctl_setattr(ip, &fa, mask); +} + +STATIC int +xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) +{ + struct getbmap __user *base = *ap; + + /* copy only getbmap portion (not getbmapx) */ + if (copy_to_user(base, bmv, sizeof(struct getbmap))) + return XFS_ERROR(EFAULT); + + *ap += sizeof(struct getbmap); + return 0; +} + +STATIC int +xfs_ioc_getbmap( + struct xfs_inode *ip, + int ioflags, + unsigned int cmd, + void __user *arg) +{ + struct getbmapx bmx; + int error; + + if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) + return -XFS_ERROR(EFAULT); + + if (bmx.bmv_count < 2) + return -XFS_ERROR(EINVAL); + + bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); + if (ioflags & IO_INVIS) + bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; + + error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, + (struct getbmap *)arg+1); + if (error) + return -error; + + /* copy back header - only size of getbmap */ + if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) + return -XFS_ERROR(EFAULT); + return 0; +} + +STATIC int +xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) +{ + struct getbmapx __user *base = *ap; + + if (copy_to_user(base, bmv, sizeof(struct getbmapx))) + return XFS_ERROR(EFAULT); + + *ap += sizeof(struct getbmapx); + return 0; +} + +STATIC int +xfs_ioc_getbmapx( + struct xfs_inode *ip, + void __user *arg) +{ + struct getbmapx bmx; + int error; + + if (copy_from_user(&bmx, arg, sizeof(bmx))) + return -XFS_ERROR(EFAULT); + + if (bmx.bmv_count < 2) + return -XFS_ERROR(EINVAL); + + if (bmx.bmv_iflags & (~BMV_IF_VALID)) + return -XFS_ERROR(EINVAL); + + error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, + (struct getbmapx *)arg+1); + if (error) + return -error; + + /* copy back header */ + if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) + return -XFS_ERROR(EFAULT); + + return 0; +} + +/* + * Note: some of the ioctl's return positive numbers as a + * byte count indicating success, such as readlink_by_handle. + * So we don't "sign flip" like most other routines. This means + * true errors need to be returned as a negative value. + */ +long +xfs_file_ioctl( + struct file *filp, + unsigned int cmd, + unsigned long p) +{ + struct inode *inode = filp->f_path.dentry->d_inode; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + void __user *arg = (void __user *)p; + int ioflags = 0; + int error; + + if (filp->f_mode & FMODE_NOCMTIME) + ioflags |= IO_INVIS; + + trace_xfs_file_ioctl(ip); + + switch (cmd) { + case FITRIM: + return xfs_ioc_trim(mp, arg); + case XFS_IOC_ALLOCSP: + case XFS_IOC_FREESP: + case XFS_IOC_RESVSP: + case XFS_IOC_UNRESVSP: + case XFS_IOC_ALLOCSP64: + case XFS_IOC_FREESP64: + case XFS_IOC_RESVSP64: + case XFS_IOC_UNRESVSP64: + case XFS_IOC_ZERO_RANGE: { + xfs_flock64_t bf; + + if (copy_from_user(&bf, arg, sizeof(bf))) + return -XFS_ERROR(EFAULT); + return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); + } + case XFS_IOC_DIOINFO: { + struct dioattr da; + xfs_buftarg_t *target = + XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp; + + da.d_mem = da.d_miniosz = 1 << target->bt_sshift; + da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); + + if (copy_to_user(arg, &da, sizeof(da))) + return -XFS_ERROR(EFAULT); + return 0; + } + + case XFS_IOC_FSBULKSTAT_SINGLE: + case XFS_IOC_FSBULKSTAT: + case XFS_IOC_FSINUMBERS: + return xfs_ioc_bulkstat(mp, cmd, arg); + + case XFS_IOC_FSGEOMETRY_V1: + return xfs_ioc_fsgeometry_v1(mp, arg); + + case XFS_IOC_FSGEOMETRY: + return xfs_ioc_fsgeometry(mp, arg); + + case XFS_IOC_GETVERSION: + return put_user(inode->i_generation, (int __user *)arg); + + case XFS_IOC_FSGETXATTR: + return xfs_ioc_fsgetxattr(ip, 0, arg); + case XFS_IOC_FSGETXATTRA: + return xfs_ioc_fsgetxattr(ip, 1, arg); + case XFS_IOC_FSSETXATTR: + return xfs_ioc_fssetxattr(ip, filp, arg); + case XFS_IOC_GETXFLAGS: + return xfs_ioc_getxflags(ip, arg); + case XFS_IOC_SETXFLAGS: + return xfs_ioc_setxflags(ip, filp, arg); + + case XFS_IOC_FSSETDM: { + struct fsdmidata dmi; + + if (copy_from_user(&dmi, arg, sizeof(dmi))) + return -XFS_ERROR(EFAULT); + + error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, + dmi.fsd_dmstate); + return -error; + } + + case XFS_IOC_GETBMAP: + case XFS_IOC_GETBMAPA: + return xfs_ioc_getbmap(ip, ioflags, cmd, arg); + + case XFS_IOC_GETBMAPX: + return xfs_ioc_getbmapx(ip, arg); + + case XFS_IOC_FD_TO_HANDLE: + case XFS_IOC_PATH_TO_HANDLE: + case XFS_IOC_PATH_TO_FSHANDLE: { + xfs_fsop_handlereq_t hreq; + + if (copy_from_user(&hreq, arg, sizeof(hreq))) + return -XFS_ERROR(EFAULT); + return xfs_find_handle(cmd, &hreq); + } + case XFS_IOC_OPEN_BY_HANDLE: { + xfs_fsop_handlereq_t hreq; + + if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) + return -XFS_ERROR(EFAULT); + return xfs_open_by_handle(filp, &hreq); + } + case XFS_IOC_FSSETDM_BY_HANDLE: + return xfs_fssetdm_by_handle(filp, arg); + + case XFS_IOC_READLINK_BY_HANDLE: { + xfs_fsop_handlereq_t hreq; + + if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) + return -XFS_ERROR(EFAULT); + return xfs_readlink_by_handle(filp, &hreq); + } + case XFS_IOC_ATTRLIST_BY_HANDLE: + return xfs_attrlist_by_handle(filp, arg); + + case XFS_IOC_ATTRMULTI_BY_HANDLE: + return xfs_attrmulti_by_handle(filp, arg); + + case XFS_IOC_SWAPEXT: { + struct xfs_swapext sxp; + + if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) + return -XFS_ERROR(EFAULT); + error = xfs_swapext(&sxp); + return -error; + } + + case XFS_IOC_FSCOUNTS: { + xfs_fsop_counts_t out; + + error = xfs_fs_counts(mp, &out); + if (error) + return -error; + + if (copy_to_user(arg, &out, sizeof(out))) + return -XFS_ERROR(EFAULT); + return 0; + } + + case XFS_IOC_SET_RESBLKS: { + xfs_fsop_resblks_t inout; + __uint64_t in; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (mp->m_flags & XFS_MOUNT_RDONLY) + return -XFS_ERROR(EROFS); + + if (copy_from_user(&inout, arg, sizeof(inout))) + return -XFS_ERROR(EFAULT); + + /* input parameter is passed in resblks field of structure */ + in = inout.resblks; + error = xfs_reserve_blocks(mp, &in, &inout); + if (error) + return -error; + + if (copy_to_user(arg, &inout, sizeof(inout))) + return -XFS_ERROR(EFAULT); + return 0; + } + + case XFS_IOC_GET_RESBLKS: { + xfs_fsop_resblks_t out; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + error = xfs_reserve_blocks(mp, NULL, &out); + if (error) + return -error; + + if (copy_to_user(arg, &out, sizeof(out))) + return -XFS_ERROR(EFAULT); + + return 0; + } + + case XFS_IOC_FSGROWFSDATA: { + xfs_growfs_data_t in; + + if (copy_from_user(&in, arg, sizeof(in))) + return -XFS_ERROR(EFAULT); + + error = xfs_growfs_data(mp, &in); + return -error; + } + + case XFS_IOC_FSGROWFSLOG: { + xfs_growfs_log_t in; + + if (copy_from_user(&in, arg, sizeof(in))) + return -XFS_ERROR(EFAULT); + + error = xfs_growfs_log(mp, &in); + return -error; + } + + case XFS_IOC_FSGROWFSRT: { + xfs_growfs_rt_t in; + + if (copy_from_user(&in, arg, sizeof(in))) + return -XFS_ERROR(EFAULT); + + error = xfs_growfs_rt(mp, &in); + return -error; + } + + case XFS_IOC_GOINGDOWN: { + __uint32_t in; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (get_user(in, (__uint32_t __user *)arg)) + return -XFS_ERROR(EFAULT); + + error = xfs_fs_goingdown(mp, in); + return -error; + } + + case XFS_IOC_ERROR_INJECTION: { + xfs_error_injection_t in; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (copy_from_user(&in, arg, sizeof(in))) + return -XFS_ERROR(EFAULT); + + error = xfs_errortag_add(in.errtag, mp); + return -error; + } + + case XFS_IOC_ERROR_CLEARALL: + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + error = xfs_errortag_clearall(mp, 1); + return -error; + + default: + return -ENOTTY; + } +} diff --git a/fs/xfs/xfs_ioctl.h b/fs/xfs/xfs_ioctl.h new file mode 100644 index 000000000000..d56173b34a2a --- /dev/null +++ b/fs/xfs/xfs_ioctl.h @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2008 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_IOCTL_H__ +#define __XFS_IOCTL_H__ + +extern int +xfs_ioc_space( + struct xfs_inode *ip, + struct inode *inode, + struct file *filp, + int ioflags, + unsigned int cmd, + xfs_flock64_t *bf); + +extern int +xfs_find_handle( + unsigned int cmd, + xfs_fsop_handlereq_t *hreq); + +extern int +xfs_open_by_handle( + struct file *parfilp, + xfs_fsop_handlereq_t *hreq); + +extern int +xfs_readlink_by_handle( + struct file *parfilp, + xfs_fsop_handlereq_t *hreq); + +extern int +xfs_attrmulti_attr_get( + struct inode *inode, + unsigned char *name, + unsigned char __user *ubuf, + __uint32_t *len, + __uint32_t flags); + +extern int +xfs_attrmulti_attr_set( + struct inode *inode, + unsigned char *name, + const unsigned char __user *ubuf, + __uint32_t len, + __uint32_t flags); + +extern int +xfs_attrmulti_attr_remove( + struct inode *inode, + unsigned char *name, + __uint32_t flags); + +extern struct dentry * +xfs_handle_to_dentry( + struct file *parfilp, + void __user *uhandle, + u32 hlen); + +extern long +xfs_file_ioctl( + struct file *filp, + unsigned int cmd, + unsigned long p); + +extern long +xfs_file_compat_ioctl( + struct file *file, + unsigned int cmd, + unsigned long arg); + +#endif diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c new file mode 100644 index 000000000000..54e623bfbb85 --- /dev/null +++ b/fs/xfs/xfs_ioctl32.c @@ -0,0 +1,672 @@ +/* + * Copyright (c) 2004-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include +#include +#include +#include +#include +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_vnode.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_itable.h" +#include "xfs_error.h" +#include "xfs_dfrag.h" +#include "xfs_vnodeops.h" +#include "xfs_fsops.h" +#include "xfs_alloc.h" +#include "xfs_rtalloc.h" +#include "xfs_attr.h" +#include "xfs_ioctl.h" +#include "xfs_ioctl32.h" +#include "xfs_trace.h" + +#define _NATIVE_IOC(cmd, type) \ + _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) + +#ifdef BROKEN_X86_ALIGNMENT +STATIC int +xfs_compat_flock64_copyin( + xfs_flock64_t *bf, + compat_xfs_flock64_t __user *arg32) +{ + if (get_user(bf->l_type, &arg32->l_type) || + get_user(bf->l_whence, &arg32->l_whence) || + get_user(bf->l_start, &arg32->l_start) || + get_user(bf->l_len, &arg32->l_len) || + get_user(bf->l_sysid, &arg32->l_sysid) || + get_user(bf->l_pid, &arg32->l_pid) || + copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32))) + return -XFS_ERROR(EFAULT); + return 0; +} + +STATIC int +xfs_compat_ioc_fsgeometry_v1( + struct xfs_mount *mp, + compat_xfs_fsop_geom_v1_t __user *arg32) +{ + xfs_fsop_geom_t fsgeo; + int error; + + error = xfs_fs_geometry(mp, &fsgeo, 3); + if (error) + return -error; + /* The 32-bit variant simply has some padding at the end */ + if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1))) + return -XFS_ERROR(EFAULT); + return 0; +} + +STATIC int +xfs_compat_growfs_data_copyin( + struct xfs_growfs_data *in, + compat_xfs_growfs_data_t __user *arg32) +{ + if (get_user(in->newblocks, &arg32->newblocks) || + get_user(in->imaxpct, &arg32->imaxpct)) + return -XFS_ERROR(EFAULT); + return 0; +} + +STATIC int +xfs_compat_growfs_rt_copyin( + struct xfs_growfs_rt *in, + compat_xfs_growfs_rt_t __user *arg32) +{ + if (get_user(in->newblocks, &arg32->newblocks) || + get_user(in->extsize, &arg32->extsize)) + return -XFS_ERROR(EFAULT); + return 0; +} + +STATIC int +xfs_inumbers_fmt_compat( + void __user *ubuffer, + const xfs_inogrp_t *buffer, + long count, + long *written) +{ + compat_xfs_inogrp_t __user *p32 = ubuffer; + long i; + + for (i = 0; i < count; i++) { + if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) || + put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) || + put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask)) + return -XFS_ERROR(EFAULT); + } + *written = count * sizeof(*p32); + return 0; +} + +#else +#define xfs_inumbers_fmt_compat xfs_inumbers_fmt +#endif /* BROKEN_X86_ALIGNMENT */ + +STATIC int +xfs_ioctl32_bstime_copyin( + xfs_bstime_t *bstime, + compat_xfs_bstime_t __user *bstime32) +{ + compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */ + + if (get_user(sec32, &bstime32->tv_sec) || + get_user(bstime->tv_nsec, &bstime32->tv_nsec)) + return -XFS_ERROR(EFAULT); + bstime->tv_sec = sec32; + return 0; +} + +/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */ +STATIC int +xfs_ioctl32_bstat_copyin( + xfs_bstat_t *bstat, + compat_xfs_bstat_t __user *bstat32) +{ + if (get_user(bstat->bs_ino, &bstat32->bs_ino) || + get_user(bstat->bs_mode, &bstat32->bs_mode) || + get_user(bstat->bs_nlink, &bstat32->bs_nlink) || + get_user(bstat->bs_uid, &bstat32->bs_uid) || + get_user(bstat->bs_gid, &bstat32->bs_gid) || + get_user(bstat->bs_rdev, &bstat32->bs_rdev) || + get_user(bstat->bs_blksize, &bstat32->bs_blksize) || + get_user(bstat->bs_size, &bstat32->bs_size) || + xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) || + xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) || + xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) || + get_user(bstat->bs_blocks, &bstat32->bs_size) || + get_user(bstat->bs_xflags, &bstat32->bs_size) || + get_user(bstat->bs_extsize, &bstat32->bs_extsize) || + get_user(bstat->bs_extents, &bstat32->bs_extents) || + get_user(bstat->bs_gen, &bstat32->bs_gen) || + get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) || + get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || + get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || + get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || + get_user(bstat->bs_aextents, &bstat32->bs_aextents)) + return -XFS_ERROR(EFAULT); + return 0; +} + +/* XFS_IOC_FSBULKSTAT and friends */ + +STATIC int +xfs_bstime_store_compat( + compat_xfs_bstime_t __user *p32, + const xfs_bstime_t *p) +{ + __s32 sec32; + + sec32 = p->tv_sec; + if (put_user(sec32, &p32->tv_sec) || + put_user(p->tv_nsec, &p32->tv_nsec)) + return -XFS_ERROR(EFAULT); + return 0; +} + +/* Return 0 on success or positive error (to xfs_bulkstat()) */ +STATIC int +xfs_bulkstat_one_fmt_compat( + void __user *ubuffer, + int ubsize, + int *ubused, + const xfs_bstat_t *buffer) +{ + compat_xfs_bstat_t __user *p32 = ubuffer; + + if (ubsize < sizeof(*p32)) + return XFS_ERROR(ENOMEM); + + if (put_user(buffer->bs_ino, &p32->bs_ino) || + put_user(buffer->bs_mode, &p32->bs_mode) || + put_user(buffer->bs_nlink, &p32->bs_nlink) || + put_user(buffer->bs_uid, &p32->bs_uid) || + put_user(buffer->bs_gid, &p32->bs_gid) || + put_user(buffer->bs_rdev, &p32->bs_rdev) || + put_user(buffer->bs_blksize, &p32->bs_blksize) || + put_user(buffer->bs_size, &p32->bs_size) || + xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) || + xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) || + xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) || + put_user(buffer->bs_blocks, &p32->bs_blocks) || + put_user(buffer->bs_xflags, &p32->bs_xflags) || + put_user(buffer->bs_extsize, &p32->bs_extsize) || + put_user(buffer->bs_extents, &p32->bs_extents) || + put_user(buffer->bs_gen, &p32->bs_gen) || + put_user(buffer->bs_projid, &p32->bs_projid) || + put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) || + put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) || + put_user(buffer->bs_dmstate, &p32->bs_dmstate) || + put_user(buffer->bs_aextents, &p32->bs_aextents)) + return XFS_ERROR(EFAULT); + if (ubused) + *ubused = sizeof(*p32); + return 0; +} + +STATIC int +xfs_bulkstat_one_compat( + xfs_mount_t *mp, /* mount point for filesystem */ + xfs_ino_t ino, /* inode number to get data for */ + void __user *buffer, /* buffer to place output in */ + int ubsize, /* size of buffer */ + int *ubused, /* bytes used by me */ + int *stat) /* BULKSTAT_RV_... */ +{ + return xfs_bulkstat_one_int(mp, ino, buffer, ubsize, + xfs_bulkstat_one_fmt_compat, + ubused, stat); +} + +/* copied from xfs_ioctl.c */ +STATIC int +xfs_compat_ioc_bulkstat( + xfs_mount_t *mp, + unsigned int cmd, + compat_xfs_fsop_bulkreq_t __user *p32) +{ + u32 addr; + xfs_fsop_bulkreq_t bulkreq; + int count; /* # of records returned */ + xfs_ino_t inlast; /* last inode number */ + int done; + int error; + + /* done = 1 if there are more stats to get and if bulkstat */ + /* should be called again (unused here, but used in dmapi) */ + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + + if (XFS_FORCED_SHUTDOWN(mp)) + return -XFS_ERROR(EIO); + + if (get_user(addr, &p32->lastip)) + return -XFS_ERROR(EFAULT); + bulkreq.lastip = compat_ptr(addr); + if (get_user(bulkreq.icount, &p32->icount) || + get_user(addr, &p32->ubuffer)) + return -XFS_ERROR(EFAULT); + bulkreq.ubuffer = compat_ptr(addr); + if (get_user(addr, &p32->ocount)) + return -XFS_ERROR(EFAULT); + bulkreq.ocount = compat_ptr(addr); + + if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) + return -XFS_ERROR(EFAULT); + + if ((count = bulkreq.icount) <= 0) + return -XFS_ERROR(EINVAL); + + if (bulkreq.ubuffer == NULL) + return -XFS_ERROR(EINVAL); + + if (cmd == XFS_IOC_FSINUMBERS_32) { + error = xfs_inumbers(mp, &inlast, &count, + bulkreq.ubuffer, xfs_inumbers_fmt_compat); + } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) { + int res; + + error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer, + sizeof(compat_xfs_bstat_t), 0, &res); + } else if (cmd == XFS_IOC_FSBULKSTAT_32) { + error = xfs_bulkstat(mp, &inlast, &count, + xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t), + bulkreq.ubuffer, &done); + } else + error = XFS_ERROR(EINVAL); + if (error) + return -error; + + if (bulkreq.ocount != NULL) { + if (copy_to_user(bulkreq.lastip, &inlast, + sizeof(xfs_ino_t))) + return -XFS_ERROR(EFAULT); + + if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) + return -XFS_ERROR(EFAULT); + } + + return 0; +} + +STATIC int +xfs_compat_handlereq_copyin( + xfs_fsop_handlereq_t *hreq, + compat_xfs_fsop_handlereq_t __user *arg32) +{ + compat_xfs_fsop_handlereq_t hreq32; + + if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t))) + return -XFS_ERROR(EFAULT); + + hreq->fd = hreq32.fd; + hreq->path = compat_ptr(hreq32.path); + hreq->oflags = hreq32.oflags; + hreq->ihandle = compat_ptr(hreq32.ihandle); + hreq->ihandlen = hreq32.ihandlen; + hreq->ohandle = compat_ptr(hreq32.ohandle); + hreq->ohandlen = compat_ptr(hreq32.ohandlen); + + return 0; +} + +STATIC struct dentry * +xfs_compat_handlereq_to_dentry( + struct file *parfilp, + compat_xfs_fsop_handlereq_t *hreq) +{ + return xfs_handle_to_dentry(parfilp, + compat_ptr(hreq->ihandle), hreq->ihandlen); +} + +STATIC int +xfs_compat_attrlist_by_handle( + struct file *parfilp, + void __user *arg) +{ + int error; + attrlist_cursor_kern_t *cursor; + compat_xfs_fsop_attrlist_handlereq_t al_hreq; + struct dentry *dentry; + char *kbuf; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + if (copy_from_user(&al_hreq, arg, + sizeof(compat_xfs_fsop_attrlist_handlereq_t))) + return -XFS_ERROR(EFAULT); + if (al_hreq.buflen > XATTR_LIST_MAX) + return -XFS_ERROR(EINVAL); + + /* + * Reject flags, only allow namespaces. + */ + if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) + return -XFS_ERROR(EINVAL); + + dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + + error = -ENOMEM; + kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); + if (!kbuf) + goto out_dput; + + cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; + error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, + al_hreq.flags, cursor); + if (error) + goto out_kfree; + + if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen)) + error = -EFAULT; + + out_kfree: + kfree(kbuf); + out_dput: + dput(dentry); + return error; +} + +STATIC int +xfs_compat_attrmulti_by_handle( + struct file *parfilp, + void __user *arg) +{ + int error; + compat_xfs_attr_multiop_t *ops; + compat_xfs_fsop_attrmulti_handlereq_t am_hreq; + struct dentry *dentry; + unsigned int i, size; + unsigned char *attr_name; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + if (copy_from_user(&am_hreq, arg, + sizeof(compat_xfs_fsop_attrmulti_handlereq_t))) + return -XFS_ERROR(EFAULT); + + /* overflow check */ + if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t)) + return -E2BIG; + + dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + + error = E2BIG; + size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t); + if (!size || size > 16 * PAGE_SIZE) + goto out_dput; + + ops = memdup_user(compat_ptr(am_hreq.ops), size); + if (IS_ERR(ops)) { + error = PTR_ERR(ops); + goto out_dput; + } + + attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); + if (!attr_name) + goto out_kfree_ops; + + error = 0; + for (i = 0; i < am_hreq.opcount; i++) { + ops[i].am_error = strncpy_from_user((char *)attr_name, + compat_ptr(ops[i].am_attrname), + MAXNAMELEN); + if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) + error = -ERANGE; + if (ops[i].am_error < 0) + break; + + switch (ops[i].am_opcode) { + case ATTR_OP_GET: + ops[i].am_error = xfs_attrmulti_attr_get( + dentry->d_inode, attr_name, + compat_ptr(ops[i].am_attrvalue), + &ops[i].am_length, ops[i].am_flags); + break; + case ATTR_OP_SET: + ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); + if (ops[i].am_error) + break; + ops[i].am_error = xfs_attrmulti_attr_set( + dentry->d_inode, attr_name, + compat_ptr(ops[i].am_attrvalue), + ops[i].am_length, ops[i].am_flags); + mnt_drop_write(parfilp->f_path.mnt); + break; + case ATTR_OP_REMOVE: + ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); + if (ops[i].am_error) + break; + ops[i].am_error = xfs_attrmulti_attr_remove( + dentry->d_inode, attr_name, + ops[i].am_flags); + mnt_drop_write(parfilp->f_path.mnt); + break; + default: + ops[i].am_error = EINVAL; + } + } + + if (copy_to_user(compat_ptr(am_hreq.ops), ops, size)) + error = XFS_ERROR(EFAULT); + + kfree(attr_name); + out_kfree_ops: + kfree(ops); + out_dput: + dput(dentry); + return -error; +} + +STATIC int +xfs_compat_fssetdm_by_handle( + struct file *parfilp, + void __user *arg) +{ + int error; + struct fsdmidata fsd; + compat_xfs_fsop_setdm_handlereq_t dmhreq; + struct dentry *dentry; + + if (!capable(CAP_MKNOD)) + return -XFS_ERROR(EPERM); + if (copy_from_user(&dmhreq, arg, + sizeof(compat_xfs_fsop_setdm_handlereq_t))) + return -XFS_ERROR(EFAULT); + + dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + + if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { + error = -XFS_ERROR(EPERM); + goto out; + } + + if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) { + error = -XFS_ERROR(EFAULT); + goto out; + } + + error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, + fsd.fsd_dmstate); + +out: + dput(dentry); + return error; +} + +long +xfs_file_compat_ioctl( + struct file *filp, + unsigned cmd, + unsigned long p) +{ + struct inode *inode = filp->f_path.dentry->d_inode; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + void __user *arg = (void __user *)p; + int ioflags = 0; + int error; + + if (filp->f_mode & FMODE_NOCMTIME) + ioflags |= IO_INVIS; + + trace_xfs_file_compat_ioctl(ip); + + switch (cmd) { + /* No size or alignment issues on any arch */ + case XFS_IOC_DIOINFO: + case XFS_IOC_FSGEOMETRY: + case XFS_IOC_FSGETXATTR: + case XFS_IOC_FSSETXATTR: + case XFS_IOC_FSGETXATTRA: + case XFS_IOC_FSSETDM: + case XFS_IOC_GETBMAP: + case XFS_IOC_GETBMAPA: + case XFS_IOC_GETBMAPX: + case XFS_IOC_FSCOUNTS: + case XFS_IOC_SET_RESBLKS: + case XFS_IOC_GET_RESBLKS: + case XFS_IOC_FSGROWFSLOG: + case XFS_IOC_GOINGDOWN: + case XFS_IOC_ERROR_INJECTION: + case XFS_IOC_ERROR_CLEARALL: + return xfs_file_ioctl(filp, cmd, p); +#ifndef BROKEN_X86_ALIGNMENT + /* These are handled fine if no alignment issues */ + case XFS_IOC_ALLOCSP: + case XFS_IOC_FREESP: + case XFS_IOC_RESVSP: + case XFS_IOC_UNRESVSP: + case XFS_IOC_ALLOCSP64: + case XFS_IOC_FREESP64: + case XFS_IOC_RESVSP64: + case XFS_IOC_UNRESVSP64: + case XFS_IOC_FSGEOMETRY_V1: + case XFS_IOC_FSGROWFSDATA: + case XFS_IOC_FSGROWFSRT: + case XFS_IOC_ZERO_RANGE: + return xfs_file_ioctl(filp, cmd, p); +#else + case XFS_IOC_ALLOCSP_32: + case XFS_IOC_FREESP_32: + case XFS_IOC_ALLOCSP64_32: + case XFS_IOC_FREESP64_32: + case XFS_IOC_RESVSP_32: + case XFS_IOC_UNRESVSP_32: + case XFS_IOC_RESVSP64_32: + case XFS_IOC_UNRESVSP64_32: + case XFS_IOC_ZERO_RANGE_32: { + struct xfs_flock64 bf; + + if (xfs_compat_flock64_copyin(&bf, arg)) + return -XFS_ERROR(EFAULT); + cmd = _NATIVE_IOC(cmd, struct xfs_flock64); + return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); + } + case XFS_IOC_FSGEOMETRY_V1_32: + return xfs_compat_ioc_fsgeometry_v1(mp, arg); + case XFS_IOC_FSGROWFSDATA_32: { + struct xfs_growfs_data in; + + if (xfs_compat_growfs_data_copyin(&in, arg)) + return -XFS_ERROR(EFAULT); + error = xfs_growfs_data(mp, &in); + return -error; + } + case XFS_IOC_FSGROWFSRT_32: { + struct xfs_growfs_rt in; + + if (xfs_compat_growfs_rt_copyin(&in, arg)) + return -XFS_ERROR(EFAULT); + error = xfs_growfs_rt(mp, &in); + return -error; + } +#endif + /* long changes size, but xfs only copiese out 32 bits */ + case XFS_IOC_GETXFLAGS_32: + case XFS_IOC_SETXFLAGS_32: + case XFS_IOC_GETVERSION_32: + cmd = _NATIVE_IOC(cmd, long); + return xfs_file_ioctl(filp, cmd, p); + case XFS_IOC_SWAPEXT_32: { + struct xfs_swapext sxp; + struct compat_xfs_swapext __user *sxu = arg; + + /* Bulk copy in up to the sx_stat field, then copy bstat */ + if (copy_from_user(&sxp, sxu, + offsetof(struct xfs_swapext, sx_stat)) || + xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) + return -XFS_ERROR(EFAULT); + error = xfs_swapext(&sxp); + return -error; + } + case XFS_IOC_FSBULKSTAT_32: + case XFS_IOC_FSBULKSTAT_SINGLE_32: + case XFS_IOC_FSINUMBERS_32: + return xfs_compat_ioc_bulkstat(mp, cmd, arg); + case XFS_IOC_FD_TO_HANDLE_32: + case XFS_IOC_PATH_TO_HANDLE_32: + case XFS_IOC_PATH_TO_FSHANDLE_32: { + struct xfs_fsop_handlereq hreq; + + if (xfs_compat_handlereq_copyin(&hreq, arg)) + return -XFS_ERROR(EFAULT); + cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); + return xfs_find_handle(cmd, &hreq); + } + case XFS_IOC_OPEN_BY_HANDLE_32: { + struct xfs_fsop_handlereq hreq; + + if (xfs_compat_handlereq_copyin(&hreq, arg)) + return -XFS_ERROR(EFAULT); + return xfs_open_by_handle(filp, &hreq); + } + case XFS_IOC_READLINK_BY_HANDLE_32: { + struct xfs_fsop_handlereq hreq; + + if (xfs_compat_handlereq_copyin(&hreq, arg)) + return -XFS_ERROR(EFAULT); + return xfs_readlink_by_handle(filp, &hreq); + } + case XFS_IOC_ATTRLIST_BY_HANDLE_32: + return xfs_compat_attrlist_by_handle(filp, arg); + case XFS_IOC_ATTRMULTI_BY_HANDLE_32: + return xfs_compat_attrmulti_by_handle(filp, arg); + case XFS_IOC_FSSETDM_BY_HANDLE_32: + return xfs_compat_fssetdm_by_handle(filp, arg); + default: + return -XFS_ERROR(ENOIOCTLCMD); + } +} diff --git a/fs/xfs/xfs_ioctl32.h b/fs/xfs/xfs_ioctl32.h new file mode 100644 index 000000000000..80f4060e8970 --- /dev/null +++ b/fs/xfs/xfs_ioctl32.h @@ -0,0 +1,237 @@ +/* + * Copyright (c) 2004-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_IOCTL32_H__ +#define __XFS_IOCTL32_H__ + +#include + +/* + * on 32-bit arches, ioctl argument structures may have different sizes + * and/or alignment. We define compat structures which match the + * 32-bit sizes/alignments here, and their associated ioctl numbers. + * + * xfs_ioctl32.c contains routines to copy these structures in and out. + */ + +/* stock kernel-level ioctls we support */ +#define XFS_IOC_GETXFLAGS_32 FS_IOC32_GETFLAGS +#define XFS_IOC_SETXFLAGS_32 FS_IOC32_SETFLAGS +#define XFS_IOC_GETVERSION_32 FS_IOC32_GETVERSION + +/* + * On intel, even if sizes match, alignment and/or padding may differ. + */ +#if defined(CONFIG_IA64) || defined(CONFIG_X86_64) +#define BROKEN_X86_ALIGNMENT +#define __compat_packed __attribute__((packed)) +#else +#define __compat_packed +#endif + +typedef struct compat_xfs_bstime { + compat_time_t tv_sec; /* seconds */ + __s32 tv_nsec; /* and nanoseconds */ +} compat_xfs_bstime_t; + +typedef struct compat_xfs_bstat { + __u64 bs_ino; /* inode number */ + __u16 bs_mode; /* type and mode */ + __u16 bs_nlink; /* number of links */ + __u32 bs_uid; /* user id */ + __u32 bs_gid; /* group id */ + __u32 bs_rdev; /* device value */ + __s32 bs_blksize; /* block size */ + __s64 bs_size; /* file size */ + compat_xfs_bstime_t bs_atime; /* access time */ + compat_xfs_bstime_t bs_mtime; /* modify time */ + compat_xfs_bstime_t bs_ctime; /* inode change time */ + int64_t bs_blocks; /* number of blocks */ + __u32 bs_xflags; /* extended flags */ + __s32 bs_extsize; /* extent size */ + __s32 bs_extents; /* number of extents */ + __u32 bs_gen; /* generation count */ + __u16 bs_projid_lo; /* lower part of project id */ +#define bs_projid bs_projid_lo /* (previously just bs_projid) */ + __u16 bs_projid_hi; /* high part of project id */ + unsigned char bs_pad[12]; /* pad space, unused */ + __u32 bs_dmevmask; /* DMIG event mask */ + __u16 bs_dmstate; /* DMIG state info */ + __u16 bs_aextents; /* attribute number of extents */ +} __compat_packed compat_xfs_bstat_t; + +typedef struct compat_xfs_fsop_bulkreq { + compat_uptr_t lastip; /* last inode # pointer */ + __s32 icount; /* count of entries in buffer */ + compat_uptr_t ubuffer; /* user buffer for inode desc. */ + compat_uptr_t ocount; /* output count pointer */ +} compat_xfs_fsop_bulkreq_t; + +#define XFS_IOC_FSBULKSTAT_32 \ + _IOWR('X', 101, struct compat_xfs_fsop_bulkreq) +#define XFS_IOC_FSBULKSTAT_SINGLE_32 \ + _IOWR('X', 102, struct compat_xfs_fsop_bulkreq) +#define XFS_IOC_FSINUMBERS_32 \ + _IOWR('X', 103, struct compat_xfs_fsop_bulkreq) + +typedef struct compat_xfs_fsop_handlereq { + __u32 fd; /* fd for FD_TO_HANDLE */ + compat_uptr_t path; /* user pathname */ + __u32 oflags; /* open flags */ + compat_uptr_t ihandle; /* user supplied handle */ + __u32 ihandlen; /* user supplied length */ + compat_uptr_t ohandle; /* user buffer for handle */ + compat_uptr_t ohandlen; /* user buffer length */ +} compat_xfs_fsop_handlereq_t; + +#define XFS_IOC_PATH_TO_FSHANDLE_32 \ + _IOWR('X', 104, struct compat_xfs_fsop_handlereq) +#define XFS_IOC_PATH_TO_HANDLE_32 \ + _IOWR('X', 105, struct compat_xfs_fsop_handlereq) +#define XFS_IOC_FD_TO_HANDLE_32 \ + _IOWR('X', 106, struct compat_xfs_fsop_handlereq) +#define XFS_IOC_OPEN_BY_HANDLE_32 \ + _IOWR('X', 107, struct compat_xfs_fsop_handlereq) +#define XFS_IOC_READLINK_BY_HANDLE_32 \ + _IOWR('X', 108, struct compat_xfs_fsop_handlereq) + +/* The bstat field in the swapext struct needs translation */ +typedef struct compat_xfs_swapext { + __int64_t sx_version; /* version */ + __int64_t sx_fdtarget; /* fd of target file */ + __int64_t sx_fdtmp; /* fd of tmp file */ + xfs_off_t sx_offset; /* offset into file */ + xfs_off_t sx_length; /* leng from offset */ + char sx_pad[16]; /* pad space, unused */ + compat_xfs_bstat_t sx_stat; /* stat of target b4 copy */ +} __compat_packed compat_xfs_swapext_t; + +#define XFS_IOC_SWAPEXT_32 _IOWR('X', 109, struct compat_xfs_swapext) + +typedef struct compat_xfs_fsop_attrlist_handlereq { + struct compat_xfs_fsop_handlereq hreq; /* handle interface structure */ + struct xfs_attrlist_cursor pos; /* opaque cookie, list offset */ + __u32 flags; /* which namespace to use */ + __u32 buflen; /* length of buffer supplied */ + compat_uptr_t buffer; /* returned names */ +} __compat_packed compat_xfs_fsop_attrlist_handlereq_t; + +/* Note: actually this is read/write */ +#define XFS_IOC_ATTRLIST_BY_HANDLE_32 \ + _IOW('X', 122, struct compat_xfs_fsop_attrlist_handlereq) + +/* am_opcodes defined in xfs_fs.h */ +typedef struct compat_xfs_attr_multiop { + __u32 am_opcode; + __s32 am_error; + compat_uptr_t am_attrname; + compat_uptr_t am_attrvalue; + __u32 am_length; + __u32 am_flags; +} compat_xfs_attr_multiop_t; + +typedef struct compat_xfs_fsop_attrmulti_handlereq { + struct compat_xfs_fsop_handlereq hreq; /* handle interface structure */ + __u32 opcount;/* count of following multiop */ + /* ptr to compat_xfs_attr_multiop */ + compat_uptr_t ops; /* attr_multi data */ +} compat_xfs_fsop_attrmulti_handlereq_t; + +#define XFS_IOC_ATTRMULTI_BY_HANDLE_32 \ + _IOW('X', 123, struct compat_xfs_fsop_attrmulti_handlereq) + +typedef struct compat_xfs_fsop_setdm_handlereq { + struct compat_xfs_fsop_handlereq hreq; /* handle information */ + /* ptr to struct fsdmidata */ + compat_uptr_t data; /* DMAPI data */ +} compat_xfs_fsop_setdm_handlereq_t; + +#define XFS_IOC_FSSETDM_BY_HANDLE_32 \ + _IOW('X', 121, struct compat_xfs_fsop_setdm_handlereq) + +#ifdef BROKEN_X86_ALIGNMENT +/* on ia32 l_start is on a 32-bit boundary */ +typedef struct compat_xfs_flock64 { + __s16 l_type; + __s16 l_whence; + __s64 l_start __attribute__((packed)); + /* len == 0 means until end of file */ + __s64 l_len __attribute__((packed)); + __s32 l_sysid; + __u32 l_pid; + __s32 l_pad[4]; /* reserve area */ +} compat_xfs_flock64_t; + +#define XFS_IOC_ALLOCSP_32 _IOW('X', 10, struct compat_xfs_flock64) +#define XFS_IOC_FREESP_32 _IOW('X', 11, struct compat_xfs_flock64) +#define XFS_IOC_ALLOCSP64_32 _IOW('X', 36, struct compat_xfs_flock64) +#define XFS_IOC_FREESP64_32 _IOW('X', 37, struct compat_xfs_flock64) +#define XFS_IOC_RESVSP_32 _IOW('X', 40, struct compat_xfs_flock64) +#define XFS_IOC_UNRESVSP_32 _IOW('X', 41, struct compat_xfs_flock64) +#define XFS_IOC_RESVSP64_32 _IOW('X', 42, struct compat_xfs_flock64) +#define XFS_IOC_UNRESVSP64_32 _IOW('X', 43, struct compat_xfs_flock64) +#define XFS_IOC_ZERO_RANGE_32 _IOW('X', 57, struct compat_xfs_flock64) + +typedef struct compat_xfs_fsop_geom_v1 { + __u32 blocksize; /* filesystem (data) block size */ + __u32 rtextsize; /* realtime extent size */ + __u32 agblocks; /* fsblocks in an AG */ + __u32 agcount; /* number of allocation groups */ + __u32 logblocks; /* fsblocks in the log */ + __u32 sectsize; /* (data) sector size, bytes */ + __u32 inodesize; /* inode size in bytes */ + __u32 imaxpct; /* max allowed inode space(%) */ + __u64 datablocks; /* fsblocks in data subvolume */ + __u64 rtblocks; /* fsblocks in realtime subvol */ + __u64 rtextents; /* rt extents in realtime subvol*/ + __u64 logstart; /* starting fsblock of the log */ + unsigned char uuid[16]; /* unique id of the filesystem */ + __u32 sunit; /* stripe unit, fsblocks */ + __u32 swidth; /* stripe width, fsblocks */ + __s32 version; /* structure version */ + __u32 flags; /* superblock version flags */ + __u32 logsectsize; /* log sector size, bytes */ + __u32 rtsectsize; /* realtime sector size, bytes */ + __u32 dirblocksize; /* directory block size, bytes */ +} __attribute__((packed)) compat_xfs_fsop_geom_v1_t; + +#define XFS_IOC_FSGEOMETRY_V1_32 \ + _IOR('X', 100, struct compat_xfs_fsop_geom_v1) + +typedef struct compat_xfs_inogrp { + __u64 xi_startino; /* starting inode number */ + __s32 xi_alloccount; /* # bits set in allocmask */ + __u64 xi_allocmask; /* mask of allocated inodes */ +} __attribute__((packed)) compat_xfs_inogrp_t; + +/* These growfs input structures have padding on the end, so must translate */ +typedef struct compat_xfs_growfs_data { + __u64 newblocks; /* new data subvol size, fsblocks */ + __u32 imaxpct; /* new inode space percentage limit */ +} __attribute__((packed)) compat_xfs_growfs_data_t; + +typedef struct compat_xfs_growfs_rt { + __u64 newblocks; /* new realtime size, fsblocks */ + __u32 extsize; /* new realtime extent size, fsblocks */ +} __attribute__((packed)) compat_xfs_growfs_rt_t; + +#define XFS_IOC_FSGROWFSDATA_32 _IOW('X', 110, struct compat_xfs_growfs_data) +#define XFS_IOC_FSGROWFSRT_32 _IOW('X', 112, struct compat_xfs_growfs_rt) + +#endif /* BROKEN_X86_ALIGNMENT */ + +#endif /* __XFS_IOCTL32_H__ */ diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c new file mode 100644 index 000000000000..b9c172b3fbbe --- /dev/null +++ b/fs/xfs/xfs_iops.c @@ -0,0 +1,1210 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_acl.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_itable.h" +#include "xfs_rw.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_utils.h" +#include "xfs_vnodeops.h" +#include "xfs_inode_item.h" +#include "xfs_trace.h" + +#include +#include +#include +#include +#include +#include +#include + +/* + * Bring the timestamps in the XFS inode uptodate. + * + * Used before writing the inode to disk. + */ +void +xfs_synchronize_times( + xfs_inode_t *ip) +{ + struct inode *inode = VFS_I(ip); + + ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; + ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; + ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec; + ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec; + ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec; + ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; +} + +/* + * If the linux inode is valid, mark it dirty. + * Used when committing a dirty inode into a transaction so that + * the inode will get written back by the linux code + */ +void +xfs_mark_inode_dirty_sync( + xfs_inode_t *ip) +{ + struct inode *inode = VFS_I(ip); + + if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) + mark_inode_dirty_sync(inode); +} + +void +xfs_mark_inode_dirty( + xfs_inode_t *ip) +{ + struct inode *inode = VFS_I(ip); + + if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) + mark_inode_dirty(inode); +} + +/* + * Hook in SELinux. This is not quite correct yet, what we really need + * here (as we do for default ACLs) is a mechanism by which creation of + * these attrs can be journalled at inode creation time (along with the + * inode, of course, such that log replay can't cause these to be lost). + */ +STATIC int +xfs_init_security( + struct inode *inode, + struct inode *dir, + const struct qstr *qstr) +{ + struct xfs_inode *ip = XFS_I(inode); + size_t length; + void *value; + unsigned char *name; + int error; + + error = security_inode_init_security(inode, dir, qstr, (char **)&name, + &value, &length); + if (error) { + if (error == -EOPNOTSUPP) + return 0; + return -error; + } + + error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); + + kfree(name); + kfree(value); + return error; +} + +static void +xfs_dentry_to_name( + struct xfs_name *namep, + struct dentry *dentry) +{ + namep->name = dentry->d_name.name; + namep->len = dentry->d_name.len; +} + +STATIC void +xfs_cleanup_inode( + struct inode *dir, + struct inode *inode, + struct dentry *dentry) +{ + struct xfs_name teardown; + + /* Oh, the horror. + * If we can't add the ACL or we fail in + * xfs_init_security we must back out. + * ENOSPC can hit here, among other things. + */ + xfs_dentry_to_name(&teardown, dentry); + + xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); + iput(inode); +} + +STATIC int +xfs_vn_mknod( + struct inode *dir, + struct dentry *dentry, + int mode, + dev_t rdev) +{ + struct inode *inode; + struct xfs_inode *ip = NULL; + struct posix_acl *default_acl = NULL; + struct xfs_name name; + int error; + + /* + * Irix uses Missed'em'V split, but doesn't want to see + * the upper 5 bits of (14bit) major. + */ + if (S_ISCHR(mode) || S_ISBLK(mode)) { + if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) + return -EINVAL; + rdev = sysv_encode_dev(rdev); + } else { + rdev = 0; + } + + if (IS_POSIXACL(dir)) { + default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); + if (IS_ERR(default_acl)) + return PTR_ERR(default_acl); + + if (!default_acl) + mode &= ~current_umask(); + } + + xfs_dentry_to_name(&name, dentry); + error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); + if (unlikely(error)) + goto out_free_acl; + + inode = VFS_I(ip); + + error = xfs_init_security(inode, dir, &dentry->d_name); + if (unlikely(error)) + goto out_cleanup_inode; + + if (default_acl) { + error = -xfs_inherit_acl(inode, default_acl); + default_acl = NULL; + if (unlikely(error)) + goto out_cleanup_inode; + } + + + d_instantiate(dentry, inode); + return -error; + + out_cleanup_inode: + xfs_cleanup_inode(dir, inode, dentry); + out_free_acl: + posix_acl_release(default_acl); + return -error; +} + +STATIC int +xfs_vn_create( + struct inode *dir, + struct dentry *dentry, + int mode, + struct nameidata *nd) +{ + return xfs_vn_mknod(dir, dentry, mode, 0); +} + +STATIC int +xfs_vn_mkdir( + struct inode *dir, + struct dentry *dentry, + int mode) +{ + return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); +} + +STATIC struct dentry * +xfs_vn_lookup( + struct inode *dir, + struct dentry *dentry, + struct nameidata *nd) +{ + struct xfs_inode *cip; + struct xfs_name name; + int error; + + if (dentry->d_name.len >= MAXNAMELEN) + return ERR_PTR(-ENAMETOOLONG); + + xfs_dentry_to_name(&name, dentry); + error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); + if (unlikely(error)) { + if (unlikely(error != ENOENT)) + return ERR_PTR(-error); + d_add(dentry, NULL); + return NULL; + } + + return d_splice_alias(VFS_I(cip), dentry); +} + +STATIC struct dentry * +xfs_vn_ci_lookup( + struct inode *dir, + struct dentry *dentry, + struct nameidata *nd) +{ + struct xfs_inode *ip; + struct xfs_name xname; + struct xfs_name ci_name; + struct qstr dname; + int error; + + if (dentry->d_name.len >= MAXNAMELEN) + return ERR_PTR(-ENAMETOOLONG); + + xfs_dentry_to_name(&xname, dentry); + error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); + if (unlikely(error)) { + if (unlikely(error != ENOENT)) + return ERR_PTR(-error); + /* + * call d_add(dentry, NULL) here when d_drop_negative_children + * is called in xfs_vn_mknod (ie. allow negative dentries + * with CI filesystems). + */ + return NULL; + } + + /* if exact match, just splice and exit */ + if (!ci_name.name) + return d_splice_alias(VFS_I(ip), dentry); + + /* else case-insensitive match... */ + dname.name = ci_name.name; + dname.len = ci_name.len; + dentry = d_add_ci(dentry, VFS_I(ip), &dname); + kmem_free(ci_name.name); + return dentry; +} + +STATIC int +xfs_vn_link( + struct dentry *old_dentry, + struct inode *dir, + struct dentry *dentry) +{ + struct inode *inode = old_dentry->d_inode; + struct xfs_name name; + int error; + + xfs_dentry_to_name(&name, dentry); + + error = xfs_link(XFS_I(dir), XFS_I(inode), &name); + if (unlikely(error)) + return -error; + + ihold(inode); + d_instantiate(dentry, inode); + return 0; +} + +STATIC int +xfs_vn_unlink( + struct inode *dir, + struct dentry *dentry) +{ + struct xfs_name name; + int error; + + xfs_dentry_to_name(&name, dentry); + + error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); + if (error) + return error; + + /* + * With unlink, the VFS makes the dentry "negative": no inode, + * but still hashed. This is incompatible with case-insensitive + * mode, so invalidate (unhash) the dentry in CI-mode. + */ + if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) + d_invalidate(dentry); + return 0; +} + +STATIC int +xfs_vn_symlink( + struct inode *dir, + struct dentry *dentry, + const char *symname) +{ + struct inode *inode; + struct xfs_inode *cip = NULL; + struct xfs_name name; + int error; + mode_t mode; + + mode = S_IFLNK | + (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); + xfs_dentry_to_name(&name, dentry); + + error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); + if (unlikely(error)) + goto out; + + inode = VFS_I(cip); + + error = xfs_init_security(inode, dir, &dentry->d_name); + if (unlikely(error)) + goto out_cleanup_inode; + + d_instantiate(dentry, inode); + return 0; + + out_cleanup_inode: + xfs_cleanup_inode(dir, inode, dentry); + out: + return -error; +} + +STATIC int +xfs_vn_rename( + struct inode *odir, + struct dentry *odentry, + struct inode *ndir, + struct dentry *ndentry) +{ + struct inode *new_inode = ndentry->d_inode; + struct xfs_name oname; + struct xfs_name nname; + + xfs_dentry_to_name(&oname, odentry); + xfs_dentry_to_name(&nname, ndentry); + + return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), + XFS_I(ndir), &nname, new_inode ? + XFS_I(new_inode) : NULL); +} + +/* + * careful here - this function can get called recursively, so + * we need to be very careful about how much stack we use. + * uio is kmalloced for this reason... + */ +STATIC void * +xfs_vn_follow_link( + struct dentry *dentry, + struct nameidata *nd) +{ + char *link; + int error = -ENOMEM; + + link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); + if (!link) + goto out_err; + + error = -xfs_readlink(XFS_I(dentry->d_inode), link); + if (unlikely(error)) + goto out_kfree; + + nd_set_link(nd, link); + return NULL; + + out_kfree: + kfree(link); + out_err: + nd_set_link(nd, ERR_PTR(error)); + return NULL; +} + +STATIC void +xfs_vn_put_link( + struct dentry *dentry, + struct nameidata *nd, + void *p) +{ + char *s = nd_get_link(nd); + + if (!IS_ERR(s)) + kfree(s); +} + +STATIC int +xfs_vn_getattr( + struct vfsmount *mnt, + struct dentry *dentry, + struct kstat *stat) +{ + struct inode *inode = dentry->d_inode; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + + trace_xfs_getattr(ip); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + stat->size = XFS_ISIZE(ip); + stat->dev = inode->i_sb->s_dev; + stat->mode = ip->i_d.di_mode; + stat->nlink = ip->i_d.di_nlink; + stat->uid = ip->i_d.di_uid; + stat->gid = ip->i_d.di_gid; + stat->ino = ip->i_ino; + stat->atime = inode->i_atime; + stat->mtime = inode->i_mtime; + stat->ctime = inode->i_ctime; + stat->blocks = + XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); + + + switch (inode->i_mode & S_IFMT) { + case S_IFBLK: + case S_IFCHR: + stat->blksize = BLKDEV_IOSIZE; + stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, + sysv_minor(ip->i_df.if_u2.if_rdev)); + break; + default: + if (XFS_IS_REALTIME_INODE(ip)) { + /* + * If the file blocks are being allocated from a + * realtime volume, then return the inode's realtime + * extent size or the realtime volume's extent size. + */ + stat->blksize = + xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; + } else + stat->blksize = xfs_preferred_iosize(mp); + stat->rdev = 0; + break; + } + + return 0; +} + +int +xfs_setattr_nonsize( + struct xfs_inode *ip, + struct iattr *iattr, + int flags) +{ + xfs_mount_t *mp = ip->i_mount; + struct inode *inode = VFS_I(ip); + int mask = iattr->ia_valid; + xfs_trans_t *tp; + int error; + uid_t uid = 0, iuid = 0; + gid_t gid = 0, igid = 0; + struct xfs_dquot *udqp = NULL, *gdqp = NULL; + struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; + + trace_xfs_setattr(ip); + + if (mp->m_flags & XFS_MOUNT_RDONLY) + return XFS_ERROR(EROFS); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + error = -inode_change_ok(inode, iattr); + if (error) + return XFS_ERROR(error); + + ASSERT((mask & ATTR_SIZE) == 0); + + /* + * If disk quotas is on, we make sure that the dquots do exist on disk, + * before we start any other transactions. Trying to do this later + * is messy. We don't care to take a readlock to look at the ids + * in inode here, because we can't hold it across the trans_reserve. + * If the IDs do change before we take the ilock, we're covered + * because the i_*dquot fields will get updated anyway. + */ + if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { + uint qflags = 0; + + if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { + uid = iattr->ia_uid; + qflags |= XFS_QMOPT_UQUOTA; + } else { + uid = ip->i_d.di_uid; + } + if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { + gid = iattr->ia_gid; + qflags |= XFS_QMOPT_GQUOTA; + } else { + gid = ip->i_d.di_gid; + } + + /* + * We take a reference when we initialize udqp and gdqp, + * so it is important that we never blindly double trip on + * the same variable. See xfs_create() for an example. + */ + ASSERT(udqp == NULL); + ASSERT(gdqp == NULL); + error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip), + qflags, &udqp, &gdqp); + if (error) + return error; + } + + tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); + error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); + if (error) + goto out_dqrele; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + + /* + * Change file ownership. Must be the owner or privileged. + */ + if (mask & (ATTR_UID|ATTR_GID)) { + /* + * These IDs could have changed since we last looked at them. + * But, we're assured that if the ownership did change + * while we didn't have the inode locked, inode's dquot(s) + * would have changed also. + */ + iuid = ip->i_d.di_uid; + igid = ip->i_d.di_gid; + gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; + uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; + + /* + * Do a quota reservation only if uid/gid is actually + * going to change. + */ + if (XFS_IS_QUOTA_RUNNING(mp) && + ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) || + (XFS_IS_GQUOTA_ON(mp) && igid != gid))) { + ASSERT(tp); + error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, + capable(CAP_FOWNER) ? + XFS_QMOPT_FORCE_RES : 0); + if (error) /* out of quota */ + goto out_trans_cancel; + } + } + + xfs_trans_ijoin(tp, ip); + + /* + * Change file ownership. Must be the owner or privileged. + */ + if (mask & (ATTR_UID|ATTR_GID)) { + /* + * CAP_FSETID overrides the following restrictions: + * + * The set-user-ID and set-group-ID bits of a file will be + * cleared upon successful return from chown() + */ + if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && + !capable(CAP_FSETID)) + ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); + + /* + * Change the ownerships and register quota modifications + * in the transaction. + */ + if (iuid != uid) { + if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { + ASSERT(mask & ATTR_UID); + ASSERT(udqp); + olddquot1 = xfs_qm_vop_chown(tp, ip, + &ip->i_udquot, udqp); + } + ip->i_d.di_uid = uid; + inode->i_uid = uid; + } + if (igid != gid) { + if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { + ASSERT(!XFS_IS_PQUOTA_ON(mp)); + ASSERT(mask & ATTR_GID); + ASSERT(gdqp); + olddquot2 = xfs_qm_vop_chown(tp, ip, + &ip->i_gdquot, gdqp); + } + ip->i_d.di_gid = gid; + inode->i_gid = gid; + } + } + + /* + * Change file access modes. + */ + if (mask & ATTR_MODE) { + umode_t mode = iattr->ia_mode; + + if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) + mode &= ~S_ISGID; + + ip->i_d.di_mode &= S_IFMT; + ip->i_d.di_mode |= mode & ~S_IFMT; + + inode->i_mode &= S_IFMT; + inode->i_mode |= mode & ~S_IFMT; + } + + /* + * Change file access or modified times. + */ + if (mask & ATTR_ATIME) { + inode->i_atime = iattr->ia_atime; + ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; + ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; + ip->i_update_core = 1; + } + if (mask & ATTR_CTIME) { + inode->i_ctime = iattr->ia_ctime; + ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; + ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; + ip->i_update_core = 1; + } + if (mask & ATTR_MTIME) { + inode->i_mtime = iattr->ia_mtime; + ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; + ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; + ip->i_update_core = 1; + } + + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + + XFS_STATS_INC(xs_ig_attrchg); + + if (mp->m_flags & XFS_MOUNT_WSYNC) + xfs_trans_set_sync(tp); + error = xfs_trans_commit(tp, 0); + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + /* + * Release any dquot(s) the inode had kept before chown. + */ + xfs_qm_dqrele(olddquot1); + xfs_qm_dqrele(olddquot2); + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + + if (error) + return XFS_ERROR(error); + + /* + * XXX(hch): Updating the ACL entries is not atomic vs the i_mode + * update. We could avoid this with linked transactions + * and passing down the transaction pointer all the way + * to attr_set. No previous user of the generic + * Posix ACL code seems to care about this issue either. + */ + if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { + error = -xfs_acl_chmod(inode); + if (error) + return XFS_ERROR(error); + } + + return 0; + +out_trans_cancel: + xfs_trans_cancel(tp, 0); + xfs_iunlock(ip, XFS_ILOCK_EXCL); +out_dqrele: + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + return error; +} + +/* + * Truncate file. Must have write permission and not be a directory. + */ +int +xfs_setattr_size( + struct xfs_inode *ip, + struct iattr *iattr, + int flags) +{ + struct xfs_mount *mp = ip->i_mount; + struct inode *inode = VFS_I(ip); + int mask = iattr->ia_valid; + struct xfs_trans *tp; + int error; + uint lock_flags; + uint commit_flags = 0; + + trace_xfs_setattr(ip); + + if (mp->m_flags & XFS_MOUNT_RDONLY) + return XFS_ERROR(EROFS); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + error = -inode_change_ok(inode, iattr); + if (error) + return XFS_ERROR(error); + + ASSERT(S_ISREG(ip->i_d.di_mode)); + ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| + ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| + ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); + + lock_flags = XFS_ILOCK_EXCL; + if (!(flags & XFS_ATTR_NOLOCK)) + lock_flags |= XFS_IOLOCK_EXCL; + xfs_ilock(ip, lock_flags); + + /* + * Short circuit the truncate case for zero length files. + */ + if (iattr->ia_size == 0 && + ip->i_size == 0 && ip->i_d.di_nextents == 0) { + if (!(mask & (ATTR_CTIME|ATTR_MTIME))) + goto out_unlock; + + /* + * Use the regular setattr path to update the timestamps. + */ + xfs_iunlock(ip, lock_flags); + iattr->ia_valid &= ~ATTR_SIZE; + return xfs_setattr_nonsize(ip, iattr, 0); + } + + /* + * Make sure that the dquots are attached to the inode. + */ + error = xfs_qm_dqattach_locked(ip, 0); + if (error) + goto out_unlock; + + /* + * Now we can make the changes. Before we join the inode to the + * transaction, take care of the part of the truncation that must be + * done without the inode lock. This needs to be done before joining + * the inode to the transaction, because the inode cannot be unlocked + * once it is a part of the transaction. + */ + if (iattr->ia_size > ip->i_size) { + /* + * Do the first part of growing a file: zero any data in the + * last block that is beyond the old EOF. We need to do this + * before the inode is joined to the transaction to modify + * i_size. + */ + error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size); + if (error) + goto out_unlock; + } + xfs_iunlock(ip, XFS_ILOCK_EXCL); + lock_flags &= ~XFS_ILOCK_EXCL; + + /* + * We are going to log the inode size change in this transaction so + * any previous writes that are beyond the on disk EOF and the new + * EOF that have not been written out need to be written here. If we + * do not write the data out, we expose ourselves to the null files + * problem. + * + * Only flush from the on disk size to the smaller of the in memory + * file size or the new size as that's the range we really care about + * here and prevents waiting for other data not within the range we + * care about here. + */ + if (ip->i_size != ip->i_d.di_size && iattr->ia_size > ip->i_d.di_size) { + error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size, + XBF_ASYNC, FI_NONE); + if (error) + goto out_unlock; + } + + /* + * Wait for all I/O to complete. + */ + xfs_ioend_wait(ip); + + error = -block_truncate_page(inode->i_mapping, iattr->ia_size, + xfs_get_blocks); + if (error) + goto out_unlock; + + tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); + error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, + XFS_TRANS_PERM_LOG_RES, + XFS_ITRUNCATE_LOG_COUNT); + if (error) + goto out_trans_cancel; + + truncate_setsize(inode, iattr->ia_size); + + commit_flags = XFS_TRANS_RELEASE_LOG_RES; + lock_flags |= XFS_ILOCK_EXCL; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + + xfs_trans_ijoin(tp, ip); + + /* + * Only change the c/mtime if we are changing the size or we are + * explicitly asked to change it. This handles the semantic difference + * between truncate() and ftruncate() as implemented in the VFS. + * + * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a + * special case where we need to update the times despite not having + * these flags set. For all other operations the VFS set these flags + * explicitly if it wants a timestamp update. + */ + if (iattr->ia_size != ip->i_size && + (!(mask & (ATTR_CTIME | ATTR_MTIME)))) { + iattr->ia_ctime = iattr->ia_mtime = + current_fs_time(inode->i_sb); + mask |= ATTR_CTIME | ATTR_MTIME; + } + + if (iattr->ia_size > ip->i_size) { + ip->i_d.di_size = iattr->ia_size; + ip->i_size = iattr->ia_size; + } else if (iattr->ia_size <= ip->i_size || + (iattr->ia_size == 0 && ip->i_d.di_nextents)) { + error = xfs_itruncate_data(&tp, ip, iattr->ia_size); + if (error) + goto out_trans_abort; + + /* + * Truncated "down", so we're removing references to old data + * here - if we delay flushing for a long time, we expose + * ourselves unduly to the notorious NULL files problem. So, + * we mark this inode and flush it when the file is closed, + * and do not wait the usual (long) time for writeout. + */ + xfs_iflags_set(ip, XFS_ITRUNCATED); + } + + if (mask & ATTR_CTIME) { + inode->i_ctime = iattr->ia_ctime; + ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; + ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; + ip->i_update_core = 1; + } + if (mask & ATTR_MTIME) { + inode->i_mtime = iattr->ia_mtime; + ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; + ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; + ip->i_update_core = 1; + } + + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + + XFS_STATS_INC(xs_ig_attrchg); + + if (mp->m_flags & XFS_MOUNT_WSYNC) + xfs_trans_set_sync(tp); + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); +out_unlock: + if (lock_flags) + xfs_iunlock(ip, lock_flags); + return error; + +out_trans_abort: + commit_flags |= XFS_TRANS_ABORT; +out_trans_cancel: + xfs_trans_cancel(tp, commit_flags); + goto out_unlock; +} + +STATIC int +xfs_vn_setattr( + struct dentry *dentry, + struct iattr *iattr) +{ + if (iattr->ia_valid & ATTR_SIZE) + return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0); + return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0); +} + +#define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) + +/* + * Call fiemap helper to fill in user data. + * Returns positive errors to xfs_getbmap. + */ +STATIC int +xfs_fiemap_format( + void **arg, + struct getbmapx *bmv, + int *full) +{ + int error; + struct fiemap_extent_info *fieinfo = *arg; + u32 fiemap_flags = 0; + u64 logical, physical, length; + + /* Do nothing for a hole */ + if (bmv->bmv_block == -1LL) + return 0; + + logical = BBTOB(bmv->bmv_offset); + physical = BBTOB(bmv->bmv_block); + length = BBTOB(bmv->bmv_length); + + if (bmv->bmv_oflags & BMV_OF_PREALLOC) + fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; + else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { + fiemap_flags |= FIEMAP_EXTENT_DELALLOC; + physical = 0; /* no block yet */ + } + if (bmv->bmv_oflags & BMV_OF_LAST) + fiemap_flags |= FIEMAP_EXTENT_LAST; + + error = fiemap_fill_next_extent(fieinfo, logical, physical, + length, fiemap_flags); + if (error > 0) { + error = 0; + *full = 1; /* user array now full */ + } + + return -error; +} + +STATIC int +xfs_vn_fiemap( + struct inode *inode, + struct fiemap_extent_info *fieinfo, + u64 start, + u64 length) +{ + xfs_inode_t *ip = XFS_I(inode); + struct getbmapx bm; + int error; + + error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); + if (error) + return error; + + /* Set up bmap header for xfs internal routine */ + bm.bmv_offset = BTOBB(start); + /* Special case for whole file */ + if (length == FIEMAP_MAX_OFFSET) + bm.bmv_length = -1LL; + else + bm.bmv_length = BTOBB(length); + + /* We add one because in getbmap world count includes the header */ + bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : + fieinfo->fi_extents_max + 1; + bm.bmv_count = min_t(__s32, bm.bmv_count, + (PAGE_SIZE * 16 / sizeof(struct getbmapx))); + bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; + if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) + bm.bmv_iflags |= BMV_IF_ATTRFORK; + if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) + bm.bmv_iflags |= BMV_IF_DELALLOC; + + error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); + if (error) + return -error; + + return 0; +} + +static const struct inode_operations xfs_inode_operations = { + .get_acl = xfs_get_acl, + .getattr = xfs_vn_getattr, + .setattr = xfs_vn_setattr, + .setxattr = generic_setxattr, + .getxattr = generic_getxattr, + .removexattr = generic_removexattr, + .listxattr = xfs_vn_listxattr, + .fiemap = xfs_vn_fiemap, +}; + +static const struct inode_operations xfs_dir_inode_operations = { + .create = xfs_vn_create, + .lookup = xfs_vn_lookup, + .link = xfs_vn_link, + .unlink = xfs_vn_unlink, + .symlink = xfs_vn_symlink, + .mkdir = xfs_vn_mkdir, + /* + * Yes, XFS uses the same method for rmdir and unlink. + * + * There are some subtile differences deeper in the code, + * but we use S_ISDIR to check for those. + */ + .rmdir = xfs_vn_unlink, + .mknod = xfs_vn_mknod, + .rename = xfs_vn_rename, + .get_acl = xfs_get_acl, + .getattr = xfs_vn_getattr, + .setattr = xfs_vn_setattr, + .setxattr = generic_setxattr, + .getxattr = generic_getxattr, + .removexattr = generic_removexattr, + .listxattr = xfs_vn_listxattr, +}; + +static const struct inode_operations xfs_dir_ci_inode_operations = { + .create = xfs_vn_create, + .lookup = xfs_vn_ci_lookup, + .link = xfs_vn_link, + .unlink = xfs_vn_unlink, + .symlink = xfs_vn_symlink, + .mkdir = xfs_vn_mkdir, + /* + * Yes, XFS uses the same method for rmdir and unlink. + * + * There are some subtile differences deeper in the code, + * but we use S_ISDIR to check for those. + */ + .rmdir = xfs_vn_unlink, + .mknod = xfs_vn_mknod, + .rename = xfs_vn_rename, + .get_acl = xfs_get_acl, + .getattr = xfs_vn_getattr, + .setattr = xfs_vn_setattr, + .setxattr = generic_setxattr, + .getxattr = generic_getxattr, + .removexattr = generic_removexattr, + .listxattr = xfs_vn_listxattr, +}; + +static const struct inode_operations xfs_symlink_inode_operations = { + .readlink = generic_readlink, + .follow_link = xfs_vn_follow_link, + .put_link = xfs_vn_put_link, + .get_acl = xfs_get_acl, + .getattr = xfs_vn_getattr, + .setattr = xfs_vn_setattr, + .setxattr = generic_setxattr, + .getxattr = generic_getxattr, + .removexattr = generic_removexattr, + .listxattr = xfs_vn_listxattr, +}; + +STATIC void +xfs_diflags_to_iflags( + struct inode *inode, + struct xfs_inode *ip) +{ + if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) + inode->i_flags |= S_IMMUTABLE; + else + inode->i_flags &= ~S_IMMUTABLE; + if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) + inode->i_flags |= S_APPEND; + else + inode->i_flags &= ~S_APPEND; + if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) + inode->i_flags |= S_SYNC; + else + inode->i_flags &= ~S_SYNC; + if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) + inode->i_flags |= S_NOATIME; + else + inode->i_flags &= ~S_NOATIME; +} + +/* + * Initialize the Linux inode, set up the operation vectors and + * unlock the inode. + * + * When reading existing inodes from disk this is called directly + * from xfs_iget, when creating a new inode it is called from + * xfs_ialloc after setting up the inode. + * + * We are always called with an uninitialised linux inode here. + * We need to initialise the necessary fields and take a reference + * on it. + */ +void +xfs_setup_inode( + struct xfs_inode *ip) +{ + struct inode *inode = &ip->i_vnode; + + inode->i_ino = ip->i_ino; + inode->i_state = I_NEW; + + inode_sb_list_add(inode); + /* make the inode look hashed for the writeback code */ + hlist_add_fake(&inode->i_hash); + + inode->i_mode = ip->i_d.di_mode; + inode->i_nlink = ip->i_d.di_nlink; + inode->i_uid = ip->i_d.di_uid; + inode->i_gid = ip->i_d.di_gid; + + switch (inode->i_mode & S_IFMT) { + case S_IFBLK: + case S_IFCHR: + inode->i_rdev = + MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, + sysv_minor(ip->i_df.if_u2.if_rdev)); + break; + default: + inode->i_rdev = 0; + break; + } + + inode->i_generation = ip->i_d.di_gen; + i_size_write(inode, ip->i_d.di_size); + inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; + inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; + inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; + inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; + inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; + inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; + xfs_diflags_to_iflags(inode, ip); + + switch (inode->i_mode & S_IFMT) { + case S_IFREG: + inode->i_op = &xfs_inode_operations; + inode->i_fop = &xfs_file_operations; + inode->i_mapping->a_ops = &xfs_address_space_operations; + break; + case S_IFDIR: + if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) + inode->i_op = &xfs_dir_ci_inode_operations; + else + inode->i_op = &xfs_dir_inode_operations; + inode->i_fop = &xfs_dir_file_operations; + break; + case S_IFLNK: + inode->i_op = &xfs_symlink_inode_operations; + if (!(ip->i_df.if_flags & XFS_IFINLINE)) + inode->i_mapping->a_ops = &xfs_address_space_operations; + break; + default: + inode->i_op = &xfs_inode_operations; + init_special_inode(inode, inode->i_mode, inode->i_rdev); + break; + } + + /* + * If there is no attribute fork no ACL can exist on this inode, + * and it can't have any file capabilities attached to it either. + */ + if (!XFS_IFORK_Q(ip)) { + inode_has_no_xattr(inode); + cache_no_acl(inode); + } + + xfs_iflags_clear(ip, XFS_INEW); + barrier(); + + unlock_new_inode(inode); +} diff --git a/fs/xfs/xfs_iops.h b/fs/xfs/xfs_iops.h new file mode 100644 index 000000000000..ef41c92ce66e --- /dev/null +++ b/fs/xfs/xfs_iops.h @@ -0,0 +1,30 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_IOPS_H__ +#define __XFS_IOPS_H__ + +struct xfs_inode; + +extern const struct file_operations xfs_file_operations; +extern const struct file_operations xfs_dir_file_operations; + +extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size); + +extern void xfs_setup_inode(struct xfs_inode *); + +#endif /* __XFS_IOPS_H__ */ diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h new file mode 100644 index 000000000000..1e8a45e74c3e --- /dev/null +++ b/fs/xfs/xfs_linux.h @@ -0,0 +1,309 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_LINUX__ +#define __XFS_LINUX__ + +#include + +/* + * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits. + * XFS_BIG_INUMS requires XFS_BIG_BLKNOS to be set. + */ +#if defined(CONFIG_LBDAF) || (BITS_PER_LONG == 64) +# define XFS_BIG_BLKNOS 1 +# define XFS_BIG_INUMS 1 +#else +# define XFS_BIG_BLKNOS 0 +# define XFS_BIG_INUMS 0 +#endif + +#include "xfs_types.h" + +#include "kmem.h" +#include "mrlock.h" +#include "time.h" +#include "uuid.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "xfs_vnode.h" +#include "xfs_stats.h" +#include "xfs_sysctl.h" +#include "xfs_iops.h" +#include "xfs_aops.h" +#include "xfs_super.h" +#include "xfs_buf.h" +#include "xfs_message.h" + +#ifdef __BIG_ENDIAN +#define XFS_NATIVE_HOST 1 +#else +#undef XFS_NATIVE_HOST +#endif + +/* + * Feature macros (disable/enable) + */ +#ifdef CONFIG_SMP +#define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ +#else +#undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ +#endif + +#define irix_sgid_inherit xfs_params.sgid_inherit.val +#define irix_symlink_mode xfs_params.symlink_mode.val +#define xfs_panic_mask xfs_params.panic_mask.val +#define xfs_error_level xfs_params.error_level.val +#define xfs_syncd_centisecs xfs_params.syncd_timer.val +#define xfs_stats_clear xfs_params.stats_clear.val +#define xfs_inherit_sync xfs_params.inherit_sync.val +#define xfs_inherit_nodump xfs_params.inherit_nodump.val +#define xfs_inherit_noatime xfs_params.inherit_noatim.val +#define xfs_buf_timer_centisecs xfs_params.xfs_buf_timer.val +#define xfs_buf_age_centisecs xfs_params.xfs_buf_age.val +#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val +#define xfs_rotorstep xfs_params.rotorstep.val +#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val +#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val + +#define current_cpu() (raw_smp_processor_id()) +#define current_pid() (current->pid) +#define current_test_flags(f) (current->flags & (f)) +#define current_set_flags_nested(sp, f) \ + (*(sp) = current->flags, current->flags |= (f)) +#define current_clear_flags_nested(sp, f) \ + (*(sp) = current->flags, current->flags &= ~(f)) +#define current_restore_flags_nested(sp, f) \ + (current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) + +#define spinlock_destroy(lock) + +#define NBBY 8 /* number of bits per byte */ + +/* + * Size of block device i/o is parameterized here. + * Currently the system supports page-sized i/o. + */ +#define BLKDEV_IOSHIFT PAGE_CACHE_SHIFT +#define BLKDEV_IOSIZE (1<> 32; + __low = c; + if (__high) { + __upper = __high % (b); + __high = __high / (b); + } + asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); + asm("":"=A" (c):"a" (__low),"d" (__high)); + *(__u64 *)a = c; + return __mod; + } + } + + /* NOTREACHED */ + return 0; +} + +/* Side effect free 64 bit mod operation */ +static inline __u32 xfs_do_mod(void *a, __u32 b, int n) +{ + switch (n) { + case 4: + return *(__u32 *)a % b; + case 8: + { + unsigned long __upper, __low, __high, __mod; + __u64 c = *(__u64 *)a; + __upper = __high = c >> 32; + __low = c; + if (__high) { + __upper = __high % (b); + __high = __high / (b); + } + asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); + asm("":"=A" (c):"a" (__low),"d" (__high)); + return __mod; + } + } + + /* NOTREACHED */ + return 0; +} +#else +static inline __u32 xfs_do_div(void *a, __u32 b, int n) +{ + __u32 mod; + + switch (n) { + case 4: + mod = *(__u32 *)a % b; + *(__u32 *)a = *(__u32 *)a / b; + return mod; + case 8: + mod = do_div(*(__u64 *)a, b); + return mod; + } + + /* NOTREACHED */ + return 0; +} + +/* Side effect free 64 bit mod operation */ +static inline __u32 xfs_do_mod(void *a, __u32 b, int n) +{ + switch (n) { + case 4: + return *(__u32 *)a % b; + case 8: + { + __u64 c = *(__u64 *)a; + return do_div(c, b); + } + } + + /* NOTREACHED */ + return 0; +} +#endif + +#undef do_div +#define do_div(a, b) xfs_do_div(&(a), (b), sizeof(a)) +#define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a)) + +static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y) +{ + x += y - 1; + do_div(x, y); + return(x * y); +} + +static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y) +{ + x += y - 1; + do_div(x, y); + return x; +} + +/* ARM old ABI has some weird alignment/padding */ +#if defined(__arm__) && !defined(__ARM_EABI__) +#define __arch_pack __attribute__((packed)) +#else +#define __arch_pack +#endif + +#define ASSERT_ALWAYS(expr) \ + (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) + +#ifndef DEBUG +#define ASSERT(expr) ((void)0) + +#ifndef STATIC +# define STATIC static noinline +#endif + +#else /* DEBUG */ + +#define ASSERT(expr) \ + (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) + +#ifndef STATIC +# define STATIC noinline +#endif + +#endif /* DEBUG */ + +#endif /* __XFS_LINUX__ */ diff --git a/fs/xfs/xfs_message.c b/fs/xfs/xfs_message.c new file mode 100644 index 000000000000..bd672def95ac --- /dev/null +++ b/fs/xfs/xfs_message.c @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2011 Red Hat, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_types.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" + +/* + * XFS logging functions + */ +static void +__xfs_printk( + const char *level, + const struct xfs_mount *mp, + struct va_format *vaf) +{ + if (mp && mp->m_fsname) { + printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf); + return; + } + printk("%sXFS: %pV\n", level, vaf); +} + +#define define_xfs_printk_level(func, kern_level) \ +void func(const struct xfs_mount *mp, const char *fmt, ...) \ +{ \ + struct va_format vaf; \ + va_list args; \ + \ + va_start(args, fmt); \ + \ + vaf.fmt = fmt; \ + vaf.va = &args; \ + \ + __xfs_printk(kern_level, mp, &vaf); \ + va_end(args); \ +} \ + +define_xfs_printk_level(xfs_emerg, KERN_EMERG); +define_xfs_printk_level(xfs_alert, KERN_ALERT); +define_xfs_printk_level(xfs_crit, KERN_CRIT); +define_xfs_printk_level(xfs_err, KERN_ERR); +define_xfs_printk_level(xfs_warn, KERN_WARNING); +define_xfs_printk_level(xfs_notice, KERN_NOTICE); +define_xfs_printk_level(xfs_info, KERN_INFO); +#ifdef DEBUG +define_xfs_printk_level(xfs_debug, KERN_DEBUG); +#endif + +void +xfs_alert_tag( + const struct xfs_mount *mp, + int panic_tag, + const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + int do_panic = 0; + + if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) { + xfs_alert(mp, "Transforming an alert into a BUG."); + do_panic = 1; + } + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + __xfs_printk(KERN_ALERT, mp, &vaf); + va_end(args); + + BUG_ON(do_panic); +} + +void +assfail(char *expr, char *file, int line) +{ + xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d", + expr, file, line); + BUG(); +} + +void +xfs_hex_dump(void *p, int length) +{ + print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1); +} diff --git a/fs/xfs/xfs_message.h b/fs/xfs/xfs_message.h new file mode 100644 index 000000000000..7fb7ea007672 --- /dev/null +++ b/fs/xfs/xfs_message.h @@ -0,0 +1,39 @@ +#ifndef __XFS_MESSAGE_H +#define __XFS_MESSAGE_H 1 + +struct xfs_mount; + +extern void xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern void xfs_alert(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern void xfs_alert_tag(const struct xfs_mount *mp, int tag, + const char *fmt, ...) + __attribute__ ((format (printf, 3, 4))); +extern void xfs_crit(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern void xfs_err(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern void xfs_warn(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern void xfs_notice(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern void xfs_info(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); + +#ifdef DEBUG +extern void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +#else +static inline void +__attribute__ ((format (printf, 2, 3))) +xfs_debug(const struct xfs_mount *mp, const char *fmt, ...) +{ +} +#endif + +extern void assfail(char *expr, char *f, int l); + +extern void xfs_hex_dump(void *p, int length); + +#endif /* __XFS_MESSAGE_H */ diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c new file mode 100644 index 000000000000..9a0aa76facdf --- /dev/null +++ b/fs/xfs/xfs_qm.c @@ -0,0 +1,2416 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_ialloc.h" +#include "xfs_itable.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_bmap.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_trans_space.h" +#include "xfs_utils.h" +#include "xfs_qm.h" +#include "xfs_trace.h" + +/* + * The global quota manager. There is only one of these for the entire + * system, _not_ one per file system. XQM keeps track of the overall + * quota functionality, including maintaining the freelist and hash + * tables of dquots. + */ +struct mutex xfs_Gqm_lock; +struct xfs_qm *xfs_Gqm; +uint ndquot; + +kmem_zone_t *qm_dqzone; +kmem_zone_t *qm_dqtrxzone; + +STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); +STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); + +STATIC int xfs_qm_init_quotainos(xfs_mount_t *); +STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); +STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); + +static struct shrinker xfs_qm_shaker = { + .shrink = xfs_qm_shake, + .seeks = DEFAULT_SEEKS, +}; + +/* + * Initialize the XQM structure. + * Note that there is not one quota manager per file system. + */ +STATIC struct xfs_qm * +xfs_Gqm_init(void) +{ + xfs_dqhash_t *udqhash, *gdqhash; + xfs_qm_t *xqm; + size_t hsize; + uint i; + + /* + * Initialize the dquot hash tables. + */ + udqhash = kmem_zalloc_greedy(&hsize, + XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), + XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); + if (!udqhash) + goto out; + + gdqhash = kmem_zalloc_large(hsize); + if (!gdqhash) + goto out_free_udqhash; + + hsize /= sizeof(xfs_dqhash_t); + ndquot = hsize << 8; + + xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); + xqm->qm_dqhashmask = hsize - 1; + xqm->qm_usr_dqhtable = udqhash; + xqm->qm_grp_dqhtable = gdqhash; + ASSERT(xqm->qm_usr_dqhtable != NULL); + ASSERT(xqm->qm_grp_dqhtable != NULL); + + for (i = 0; i < hsize; i++) { + xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); + xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); + } + + /* + * Freelist of all dquots of all file systems + */ + INIT_LIST_HEAD(&xqm->qm_dqfrlist); + xqm->qm_dqfrlist_cnt = 0; + mutex_init(&xqm->qm_dqfrlist_lock); + + /* + * dquot zone. we register our own low-memory callback. + */ + if (!qm_dqzone) { + xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), + "xfs_dquots"); + qm_dqzone = xqm->qm_dqzone; + } else + xqm->qm_dqzone = qm_dqzone; + + register_shrinker(&xfs_qm_shaker); + + /* + * The t_dqinfo portion of transactions. + */ + if (!qm_dqtrxzone) { + xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), + "xfs_dqtrx"); + qm_dqtrxzone = xqm->qm_dqtrxzone; + } else + xqm->qm_dqtrxzone = qm_dqtrxzone; + + atomic_set(&xqm->qm_totaldquots, 0); + xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; + xqm->qm_nrefs = 0; + return xqm; + + out_free_udqhash: + kmem_free_large(udqhash); + out: + return NULL; +} + +/* + * Destroy the global quota manager when its reference count goes to zero. + */ +STATIC void +xfs_qm_destroy( + struct xfs_qm *xqm) +{ + struct xfs_dquot *dqp, *n; + int hsize, i; + + ASSERT(xqm != NULL); + ASSERT(xqm->qm_nrefs == 0); + unregister_shrinker(&xfs_qm_shaker); + hsize = xqm->qm_dqhashmask + 1; + for (i = 0; i < hsize; i++) { + xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); + xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); + } + kmem_free_large(xqm->qm_usr_dqhtable); + kmem_free_large(xqm->qm_grp_dqhtable); + xqm->qm_usr_dqhtable = NULL; + xqm->qm_grp_dqhtable = NULL; + xqm->qm_dqhashmask = 0; + + /* frlist cleanup */ + mutex_lock(&xqm->qm_dqfrlist_lock); + list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { + xfs_dqlock(dqp); + list_del_init(&dqp->q_freelist); + xfs_Gqm->qm_dqfrlist_cnt--; + xfs_dqunlock(dqp); + xfs_qm_dqdestroy(dqp); + } + mutex_unlock(&xqm->qm_dqfrlist_lock); + mutex_destroy(&xqm->qm_dqfrlist_lock); + kmem_free(xqm); +} + +/* + * Called at mount time to let XQM know that another file system is + * starting quotas. This isn't crucial information as the individual mount + * structures are pretty independent, but it helps the XQM keep a + * global view of what's going on. + */ +/* ARGSUSED */ +STATIC int +xfs_qm_hold_quotafs_ref( + struct xfs_mount *mp) +{ + /* + * Need to lock the xfs_Gqm structure for things like this. For example, + * the structure could disappear between the entry to this routine and + * a HOLD operation if not locked. + */ + mutex_lock(&xfs_Gqm_lock); + + if (!xfs_Gqm) { + xfs_Gqm = xfs_Gqm_init(); + if (!xfs_Gqm) { + mutex_unlock(&xfs_Gqm_lock); + return ENOMEM; + } + } + + /* + * We can keep a list of all filesystems with quotas mounted for + * debugging and statistical purposes, but ... + * Just take a reference and get out. + */ + xfs_Gqm->qm_nrefs++; + mutex_unlock(&xfs_Gqm_lock); + + return 0; +} + + +/* + * Release the reference that a filesystem took at mount time, + * so that we know when we need to destroy the entire quota manager. + */ +/* ARGSUSED */ +STATIC void +xfs_qm_rele_quotafs_ref( + struct xfs_mount *mp) +{ + xfs_dquot_t *dqp, *n; + + ASSERT(xfs_Gqm); + ASSERT(xfs_Gqm->qm_nrefs > 0); + + /* + * Go thru the freelist and destroy all inactive dquots. + */ + mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); + + list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { + xfs_dqlock(dqp); + if (dqp->dq_flags & XFS_DQ_INACTIVE) { + ASSERT(dqp->q_mount == NULL); + ASSERT(! XFS_DQ_IS_DIRTY(dqp)); + ASSERT(list_empty(&dqp->q_hashlist)); + ASSERT(list_empty(&dqp->q_mplist)); + list_del_init(&dqp->q_freelist); + xfs_Gqm->qm_dqfrlist_cnt--; + xfs_dqunlock(dqp); + xfs_qm_dqdestroy(dqp); + } else { + xfs_dqunlock(dqp); + } + } + mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); + + /* + * Destroy the entire XQM. If somebody mounts with quotaon, this'll + * be restarted. + */ + mutex_lock(&xfs_Gqm_lock); + if (--xfs_Gqm->qm_nrefs == 0) { + xfs_qm_destroy(xfs_Gqm); + xfs_Gqm = NULL; + } + mutex_unlock(&xfs_Gqm_lock); +} + +/* + * Just destroy the quotainfo structure. + */ +void +xfs_qm_unmount( + struct xfs_mount *mp) +{ + if (mp->m_quotainfo) { + xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); + xfs_qm_destroy_quotainfo(mp); + } +} + + +/* + * This is called from xfs_mountfs to start quotas and initialize all + * necessary data structures like quotainfo. This is also responsible for + * running a quotacheck as necessary. We are guaranteed that the superblock + * is consistently read in at this point. + * + * If we fail here, the mount will continue with quota turned off. We don't + * need to inidicate success or failure at all. + */ +void +xfs_qm_mount_quotas( + xfs_mount_t *mp) +{ + int error = 0; + uint sbf; + + /* + * If quotas on realtime volumes is not supported, we disable + * quotas immediately. + */ + if (mp->m_sb.sb_rextents) { + xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); + mp->m_qflags = 0; + goto write_changes; + } + + ASSERT(XFS_IS_QUOTA_RUNNING(mp)); + + /* + * Allocate the quotainfo structure inside the mount struct, and + * create quotainode(s), and change/rev superblock if necessary. + */ + error = xfs_qm_init_quotainfo(mp); + if (error) { + /* + * We must turn off quotas. + */ + ASSERT(mp->m_quotainfo == NULL); + mp->m_qflags = 0; + goto write_changes; + } + /* + * If any of the quotas are not consistent, do a quotacheck. + */ + if (XFS_QM_NEED_QUOTACHECK(mp)) { + error = xfs_qm_quotacheck(mp); + if (error) { + /* Quotacheck failed and disabled quotas. */ + return; + } + } + /* + * If one type of quotas is off, then it will lose its + * quotachecked status, since we won't be doing accounting for + * that type anymore. + */ + if (!XFS_IS_UQUOTA_ON(mp)) + mp->m_qflags &= ~XFS_UQUOTA_CHKD; + if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) + mp->m_qflags &= ~XFS_OQUOTA_CHKD; + + write_changes: + /* + * We actually don't have to acquire the m_sb_lock at all. + * This can only be called from mount, and that's single threaded. XXX + */ + spin_lock(&mp->m_sb_lock); + sbf = mp->m_sb.sb_qflags; + mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; + spin_unlock(&mp->m_sb_lock); + + if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { + if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { + /* + * We could only have been turning quotas off. + * We aren't in very good shape actually because + * the incore structures are convinced that quotas are + * off, but the on disk superblock doesn't know that ! + */ + ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); + xfs_alert(mp, "%s: Superblock update failed!", + __func__); + } + } + + if (error) { + xfs_warn(mp, "Failed to initialize disk quotas."); + return; + } +} + +/* + * Called from the vfsops layer. + */ +void +xfs_qm_unmount_quotas( + xfs_mount_t *mp) +{ + /* + * Release the dquots that root inode, et al might be holding, + * before we flush quotas and blow away the quotainfo structure. + */ + ASSERT(mp->m_rootip); + xfs_qm_dqdetach(mp->m_rootip); + if (mp->m_rbmip) + xfs_qm_dqdetach(mp->m_rbmip); + if (mp->m_rsumip) + xfs_qm_dqdetach(mp->m_rsumip); + + /* + * Release the quota inodes. + */ + if (mp->m_quotainfo) { + if (mp->m_quotainfo->qi_uquotaip) { + IRELE(mp->m_quotainfo->qi_uquotaip); + mp->m_quotainfo->qi_uquotaip = NULL; + } + if (mp->m_quotainfo->qi_gquotaip) { + IRELE(mp->m_quotainfo->qi_gquotaip); + mp->m_quotainfo->qi_gquotaip = NULL; + } + } +} + +/* + * Flush all dquots of the given file system to disk. The dquots are + * _not_ purged from memory here, just their data written to disk. + */ +STATIC int +xfs_qm_dqflush_all( + struct xfs_mount *mp, + int sync_mode) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + int recl; + struct xfs_dquot *dqp; + int error; + + if (!q) + return 0; +again: + mutex_lock(&q->qi_dqlist_lock); + list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { + xfs_dqlock(dqp); + if (! XFS_DQ_IS_DIRTY(dqp)) { + xfs_dqunlock(dqp); + continue; + } + + /* XXX a sentinel would be better */ + recl = q->qi_dqreclaims; + if (!xfs_dqflock_nowait(dqp)) { + /* + * If we can't grab the flush lock then check + * to see if the dquot has been flushed delayed + * write. If so, grab its buffer and send it + * out immediately. We'll be able to acquire + * the flush lock when the I/O completes. + */ + xfs_qm_dqflock_pushbuf_wait(dqp); + } + /* + * Let go of the mplist lock. We don't want to hold it + * across a disk write. + */ + mutex_unlock(&q->qi_dqlist_lock); + error = xfs_qm_dqflush(dqp, sync_mode); + xfs_dqunlock(dqp); + if (error) + return error; + + mutex_lock(&q->qi_dqlist_lock); + if (recl != q->qi_dqreclaims) { + mutex_unlock(&q->qi_dqlist_lock); + /* XXX restart limit */ + goto again; + } + } + + mutex_unlock(&q->qi_dqlist_lock); + /* return ! busy */ + return 0; +} +/* + * Release the group dquot pointers the user dquots may be + * carrying around as a hint. mplist is locked on entry and exit. + */ +STATIC void +xfs_qm_detach_gdquots( + struct xfs_mount *mp) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + struct xfs_dquot *dqp, *gdqp; + int nrecl; + + again: + ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); + list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { + xfs_dqlock(dqp); + if ((gdqp = dqp->q_gdquot)) { + xfs_dqlock(gdqp); + dqp->q_gdquot = NULL; + } + xfs_dqunlock(dqp); + + if (gdqp) { + /* + * Can't hold the mplist lock across a dqput. + * XXXmust convert to marker based iterations here. + */ + nrecl = q->qi_dqreclaims; + mutex_unlock(&q->qi_dqlist_lock); + xfs_qm_dqput(gdqp); + + mutex_lock(&q->qi_dqlist_lock); + if (nrecl != q->qi_dqreclaims) + goto again; + } + } +} + +/* + * Go through all the incore dquots of this file system and take them + * off the mplist and hashlist, if the dquot type matches the dqtype + * parameter. This is used when turning off quota accounting for + * users and/or groups, as well as when the filesystem is unmounting. + */ +STATIC int +xfs_qm_dqpurge_int( + struct xfs_mount *mp, + uint flags) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + struct xfs_dquot *dqp, *n; + uint dqtype; + int nrecl; + int nmisses; + + if (!q) + return 0; + + dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; + dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; + dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; + + mutex_lock(&q->qi_dqlist_lock); + + /* + * In the first pass through all incore dquots of this filesystem, + * we release the group dquot pointers the user dquots may be + * carrying around as a hint. We need to do this irrespective of + * what's being turned off. + */ + xfs_qm_detach_gdquots(mp); + + again: + nmisses = 0; + ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); + /* + * Try to get rid of all of the unwanted dquots. The idea is to + * get them off mplist and hashlist, but leave them on freelist. + */ + list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { + /* + * It's OK to look at the type without taking dqlock here. + * We're holding the mplist lock here, and that's needed for + * a dqreclaim. + */ + if ((dqp->dq_flags & dqtype) == 0) + continue; + + if (!mutex_trylock(&dqp->q_hash->qh_lock)) { + nrecl = q->qi_dqreclaims; + mutex_unlock(&q->qi_dqlist_lock); + mutex_lock(&dqp->q_hash->qh_lock); + mutex_lock(&q->qi_dqlist_lock); + + /* + * XXXTheoretically, we can get into a very long + * ping pong game here. + * No one can be adding dquots to the mplist at + * this point, but somebody might be taking things off. + */ + if (nrecl != q->qi_dqreclaims) { + mutex_unlock(&dqp->q_hash->qh_lock); + goto again; + } + } + + /* + * Take the dquot off the mplist and hashlist. It may remain on + * freelist in INACTIVE state. + */ + nmisses += xfs_qm_dqpurge(dqp); + } + mutex_unlock(&q->qi_dqlist_lock); + return nmisses; +} + +int +xfs_qm_dqpurge_all( + xfs_mount_t *mp, + uint flags) +{ + int ndquots; + + /* + * Purge the dquot cache. + * None of the dquots should really be busy at this point. + */ + if (mp->m_quotainfo) { + while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { + delay(ndquots * 10); + } + } + return 0; +} + +STATIC int +xfs_qm_dqattach_one( + xfs_inode_t *ip, + xfs_dqid_t id, + uint type, + uint doalloc, + xfs_dquot_t *udqhint, /* hint */ + xfs_dquot_t **IO_idqpp) +{ + xfs_dquot_t *dqp; + int error; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + error = 0; + + /* + * See if we already have it in the inode itself. IO_idqpp is + * &i_udquot or &i_gdquot. This made the code look weird, but + * made the logic a lot simpler. + */ + dqp = *IO_idqpp; + if (dqp) { + trace_xfs_dqattach_found(dqp); + return 0; + } + + /* + * udqhint is the i_udquot field in inode, and is non-NULL only + * when the type arg is group/project. Its purpose is to save a + * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside + * the user dquot. + */ + if (udqhint) { + ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); + xfs_dqlock(udqhint); + + /* + * No need to take dqlock to look at the id. + * + * The ID can't change until it gets reclaimed, and it won't + * be reclaimed as long as we have a ref from inode and we + * hold the ilock. + */ + dqp = udqhint->q_gdquot; + if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { + xfs_dqlock(dqp); + XFS_DQHOLD(dqp); + ASSERT(*IO_idqpp == NULL); + *IO_idqpp = dqp; + + xfs_dqunlock(dqp); + xfs_dqunlock(udqhint); + return 0; + } + + /* + * We can't hold a dquot lock when we call the dqget code. + * We'll deadlock in no time, because of (not conforming to) + * lock ordering - the inodelock comes before any dquot lock, + * and we may drop and reacquire the ilock in xfs_qm_dqget(). + */ + xfs_dqunlock(udqhint); + } + + /* + * Find the dquot from somewhere. This bumps the + * reference count of dquot and returns it locked. + * This can return ENOENT if dquot didn't exist on + * disk and we didn't ask it to allocate; + * ESRCH if quotas got turned off suddenly. + */ + error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); + if (error) + return error; + + trace_xfs_dqattach_get(dqp); + + /* + * dqget may have dropped and re-acquired the ilock, but it guarantees + * that the dquot returned is the one that should go in the inode. + */ + *IO_idqpp = dqp; + xfs_dqunlock(dqp); + return 0; +} + + +/* + * Given a udquot and gdquot, attach a ptr to the group dquot in the + * udquot as a hint for future lookups. The idea sounds simple, but the + * execution isn't, because the udquot might have a group dquot attached + * already and getting rid of that gets us into lock ordering constraints. + * The process is complicated more by the fact that the dquots may or may not + * be locked on entry. + */ +STATIC void +xfs_qm_dqattach_grouphint( + xfs_dquot_t *udq, + xfs_dquot_t *gdq) +{ + xfs_dquot_t *tmp; + + xfs_dqlock(udq); + + if ((tmp = udq->q_gdquot)) { + if (tmp == gdq) { + xfs_dqunlock(udq); + return; + } + + udq->q_gdquot = NULL; + /* + * We can't keep any dqlocks when calling dqrele, + * because the freelist lock comes before dqlocks. + */ + xfs_dqunlock(udq); + /* + * we took a hard reference once upon a time in dqget, + * so give it back when the udquot no longer points at it + * dqput() does the unlocking of the dquot. + */ + xfs_qm_dqrele(tmp); + + xfs_dqlock(udq); + xfs_dqlock(gdq); + + } else { + ASSERT(XFS_DQ_IS_LOCKED(udq)); + xfs_dqlock(gdq); + } + + ASSERT(XFS_DQ_IS_LOCKED(udq)); + ASSERT(XFS_DQ_IS_LOCKED(gdq)); + /* + * Somebody could have attached a gdquot here, + * when we dropped the uqlock. If so, just do nothing. + */ + if (udq->q_gdquot == NULL) { + XFS_DQHOLD(gdq); + udq->q_gdquot = gdq; + } + + xfs_dqunlock(gdq); + xfs_dqunlock(udq); +} + + +/* + * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON + * into account. + * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. + * Inode may get unlocked and relocked in here, and the caller must deal with + * the consequences. + */ +int +xfs_qm_dqattach_locked( + xfs_inode_t *ip, + uint flags) +{ + xfs_mount_t *mp = ip->i_mount; + uint nquotas = 0; + int error = 0; + + if (!XFS_IS_QUOTA_RUNNING(mp) || + !XFS_IS_QUOTA_ON(mp) || + !XFS_NOT_DQATTACHED(mp, ip) || + ip->i_ino == mp->m_sb.sb_uquotino || + ip->i_ino == mp->m_sb.sb_gquotino) + return 0; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + if (XFS_IS_UQUOTA_ON(mp)) { + error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, + flags & XFS_QMOPT_DQALLOC, + NULL, &ip->i_udquot); + if (error) + goto done; + nquotas++; + } + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + if (XFS_IS_OQUOTA_ON(mp)) { + error = XFS_IS_GQUOTA_ON(mp) ? + xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, + flags & XFS_QMOPT_DQALLOC, + ip->i_udquot, &ip->i_gdquot) : + xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, + flags & XFS_QMOPT_DQALLOC, + ip->i_udquot, &ip->i_gdquot); + /* + * Don't worry about the udquot that we may have + * attached above. It'll get detached, if not already. + */ + if (error) + goto done; + nquotas++; + } + + /* + * Attach this group quota to the user quota as a hint. + * This WON'T, in general, result in a thrash. + */ + if (nquotas == 2) { + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + ASSERT(ip->i_udquot); + ASSERT(ip->i_gdquot); + + /* + * We may or may not have the i_udquot locked at this point, + * but this check is OK since we don't depend on the i_gdquot to + * be accurate 100% all the time. It is just a hint, and this + * will succeed in general. + */ + if (ip->i_udquot->q_gdquot == ip->i_gdquot) + goto done; + /* + * Attach i_gdquot to the gdquot hint inside the i_udquot. + */ + xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); + } + + done: +#ifdef DEBUG + if (!error) { + if (XFS_IS_UQUOTA_ON(mp)) + ASSERT(ip->i_udquot); + if (XFS_IS_OQUOTA_ON(mp)) + ASSERT(ip->i_gdquot); + } + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); +#endif + return error; +} + +int +xfs_qm_dqattach( + struct xfs_inode *ip, + uint flags) +{ + int error; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_qm_dqattach_locked(ip, flags); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + return error; +} + +/* + * Release dquots (and their references) if any. + * The inode should be locked EXCL except when this's called by + * xfs_ireclaim. + */ +void +xfs_qm_dqdetach( + xfs_inode_t *ip) +{ + if (!(ip->i_udquot || ip->i_gdquot)) + return; + + trace_xfs_dquot_dqdetach(ip); + + ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); + ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); + if (ip->i_udquot) { + xfs_qm_dqrele(ip->i_udquot); + ip->i_udquot = NULL; + } + if (ip->i_gdquot) { + xfs_qm_dqrele(ip->i_gdquot); + ip->i_gdquot = NULL; + } +} + +int +xfs_qm_sync( + struct xfs_mount *mp, + int flags) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + int recl, restarts; + struct xfs_dquot *dqp; + int error; + + if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) + return 0; + + restarts = 0; + + again: + mutex_lock(&q->qi_dqlist_lock); + /* + * dqpurge_all() also takes the mplist lock and iterate thru all dquots + * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared + * when we have the mplist lock, we know that dquots will be consistent + * as long as we have it locked. + */ + if (!XFS_IS_QUOTA_ON(mp)) { + mutex_unlock(&q->qi_dqlist_lock); + return 0; + } + ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); + list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { + /* + * If this is vfs_sync calling, then skip the dquots that + * don't 'seem' to be dirty. ie. don't acquire dqlock. + * This is very similar to what xfs_sync does with inodes. + */ + if (flags & SYNC_TRYLOCK) { + if (!XFS_DQ_IS_DIRTY(dqp)) + continue; + if (!xfs_qm_dqlock_nowait(dqp)) + continue; + } else { + xfs_dqlock(dqp); + } + + /* + * Now, find out for sure if this dquot is dirty or not. + */ + if (! XFS_DQ_IS_DIRTY(dqp)) { + xfs_dqunlock(dqp); + continue; + } + + /* XXX a sentinel would be better */ + recl = q->qi_dqreclaims; + if (!xfs_dqflock_nowait(dqp)) { + if (flags & SYNC_TRYLOCK) { + xfs_dqunlock(dqp); + continue; + } + /* + * If we can't grab the flush lock then if the caller + * really wanted us to give this our best shot, so + * see if we can give a push to the buffer before we wait + * on the flush lock. At this point, we know that + * even though the dquot is being flushed, + * it has (new) dirty data. + */ + xfs_qm_dqflock_pushbuf_wait(dqp); + } + /* + * Let go of the mplist lock. We don't want to hold it + * across a disk write + */ + mutex_unlock(&q->qi_dqlist_lock); + error = xfs_qm_dqflush(dqp, flags); + xfs_dqunlock(dqp); + if (error && XFS_FORCED_SHUTDOWN(mp)) + return 0; /* Need to prevent umount failure */ + else if (error) + return error; + + mutex_lock(&q->qi_dqlist_lock); + if (recl != q->qi_dqreclaims) { + if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) + break; + + mutex_unlock(&q->qi_dqlist_lock); + goto again; + } + } + + mutex_unlock(&q->qi_dqlist_lock); + return 0; +} + +/* + * The hash chains and the mplist use the same xfs_dqhash structure as + * their list head, but we can take the mplist qh_lock and one of the + * hash qh_locks at the same time without any problem as they aren't + * related. + */ +static struct lock_class_key xfs_quota_mplist_class; + +/* + * This initializes all the quota information that's kept in the + * mount structure + */ +STATIC int +xfs_qm_init_quotainfo( + xfs_mount_t *mp) +{ + xfs_quotainfo_t *qinf; + int error; + xfs_dquot_t *dqp; + + ASSERT(XFS_IS_QUOTA_RUNNING(mp)); + + /* + * Tell XQM that we exist as soon as possible. + */ + if ((error = xfs_qm_hold_quotafs_ref(mp))) { + return error; + } + + qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); + + /* + * See if quotainodes are setup, and if not, allocate them, + * and change the superblock accordingly. + */ + if ((error = xfs_qm_init_quotainos(mp))) { + kmem_free(qinf); + mp->m_quotainfo = NULL; + return error; + } + + INIT_LIST_HEAD(&qinf->qi_dqlist); + mutex_init(&qinf->qi_dqlist_lock); + lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); + + qinf->qi_dqreclaims = 0; + + /* mutex used to serialize quotaoffs */ + mutex_init(&qinf->qi_quotaofflock); + + /* Precalc some constants */ + qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); + ASSERT(qinf->qi_dqchunklen); + qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); + do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); + + mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); + + /* + * We try to get the limits from the superuser's limits fields. + * This is quite hacky, but it is standard quota practice. + * We look at the USR dquot with id == 0 first, but if user quotas + * are not enabled we goto the GRP dquot with id == 0. + * We don't really care to keep separate default limits for user + * and group quotas, at least not at this point. + */ + error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, + XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : + (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : + XFS_DQ_PROJ), + XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, + &dqp); + if (! error) { + xfs_disk_dquot_t *ddqp = &dqp->q_core; + + /* + * The warnings and timers set the grace period given to + * a user or group before he or she can not perform any + * more writing. If it is zero, a default is used. + */ + qinf->qi_btimelimit = ddqp->d_btimer ? + be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; + qinf->qi_itimelimit = ddqp->d_itimer ? + be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; + qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? + be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; + qinf->qi_bwarnlimit = ddqp->d_bwarns ? + be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; + qinf->qi_iwarnlimit = ddqp->d_iwarns ? + be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; + qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? + be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; + qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); + qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); + qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); + qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); + qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); + qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); + + /* + * We sent the XFS_QMOPT_DQSUSER flag to dqget because + * we don't want this dquot cached. We haven't done a + * quotacheck yet, and quotacheck doesn't like incore dquots. + */ + xfs_qm_dqdestroy(dqp); + } else { + qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; + qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; + qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; + qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; + qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; + qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; + } + + return 0; +} + + +/* + * Gets called when unmounting a filesystem or when all quotas get + * turned off. + * This purges the quota inodes, destroys locks and frees itself. + */ +void +xfs_qm_destroy_quotainfo( + xfs_mount_t *mp) +{ + xfs_quotainfo_t *qi; + + qi = mp->m_quotainfo; + ASSERT(qi != NULL); + ASSERT(xfs_Gqm != NULL); + + /* + * Release the reference that XQM kept, so that we know + * when the XQM structure should be freed. We cannot assume + * that xfs_Gqm is non-null after this point. + */ + xfs_qm_rele_quotafs_ref(mp); + + ASSERT(list_empty(&qi->qi_dqlist)); + mutex_destroy(&qi->qi_dqlist_lock); + + if (qi->qi_uquotaip) { + IRELE(qi->qi_uquotaip); + qi->qi_uquotaip = NULL; /* paranoia */ + } + if (qi->qi_gquotaip) { + IRELE(qi->qi_gquotaip); + qi->qi_gquotaip = NULL; + } + mutex_destroy(&qi->qi_quotaofflock); + kmem_free(qi); + mp->m_quotainfo = NULL; +} + + + +/* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ + +/* ARGSUSED */ +STATIC void +xfs_qm_list_init( + xfs_dqlist_t *list, + char *str, + int n) +{ + mutex_init(&list->qh_lock); + INIT_LIST_HEAD(&list->qh_list); + list->qh_version = 0; + list->qh_nelems = 0; +} + +STATIC void +xfs_qm_list_destroy( + xfs_dqlist_t *list) +{ + mutex_destroy(&(list->qh_lock)); +} + +/* + * Create an inode and return with a reference already taken, but unlocked + * This is how we create quota inodes + */ +STATIC int +xfs_qm_qino_alloc( + xfs_mount_t *mp, + xfs_inode_t **ip, + __int64_t sbfields, + uint flags) +{ + xfs_trans_t *tp; + int error; + int committed; + + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); + if ((error = xfs_trans_reserve(tp, + XFS_QM_QINOCREATE_SPACE_RES(mp), + XFS_CREATE_LOG_RES(mp), 0, + XFS_TRANS_PERM_LOG_RES, + XFS_CREATE_LOG_COUNT))) { + xfs_trans_cancel(tp, 0); + return error; + } + + error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); + if (error) { + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | + XFS_TRANS_ABORT); + return error; + } + + /* + * Make the changes in the superblock, and log those too. + * sbfields arg may contain fields other than *QUOTINO; + * VERSIONNUM for example. + */ + spin_lock(&mp->m_sb_lock); + if (flags & XFS_QMOPT_SBVERSION) { + ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); + ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | + XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == + (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | + XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); + + xfs_sb_version_addquota(&mp->m_sb); + mp->m_sb.sb_uquotino = NULLFSINO; + mp->m_sb.sb_gquotino = NULLFSINO; + + /* qflags will get updated _after_ quotacheck */ + mp->m_sb.sb_qflags = 0; + } + if (flags & XFS_QMOPT_UQUOTA) + mp->m_sb.sb_uquotino = (*ip)->i_ino; + else + mp->m_sb.sb_gquotino = (*ip)->i_ino; + spin_unlock(&mp->m_sb_lock); + xfs_mod_sb(tp, sbfields); + + if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { + xfs_alert(mp, "%s failed (error %d)!", __func__, error); + return error; + } + return 0; +} + + +STATIC void +xfs_qm_reset_dqcounts( + xfs_mount_t *mp, + xfs_buf_t *bp, + xfs_dqid_t id, + uint type) +{ + xfs_disk_dquot_t *ddq; + int j; + + trace_xfs_reset_dqcounts(bp, _RET_IP_); + + /* + * Reset all counters and timers. They'll be + * started afresh by xfs_qm_quotacheck. + */ +#ifdef DEBUG + j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); + do_div(j, sizeof(xfs_dqblk_t)); + ASSERT(mp->m_quotainfo->qi_dqperchunk == j); +#endif + ddq = bp->b_addr; + for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { + /* + * Do a sanity check, and if needed, repair the dqblk. Don't + * output any warnings because it's perfectly possible to + * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. + */ + (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, + "xfs_quotacheck"); + ddq->d_bcount = 0; + ddq->d_icount = 0; + ddq->d_rtbcount = 0; + ddq->d_btimer = 0; + ddq->d_itimer = 0; + ddq->d_rtbtimer = 0; + ddq->d_bwarns = 0; + ddq->d_iwarns = 0; + ddq->d_rtbwarns = 0; + ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); + } +} + +STATIC int +xfs_qm_dqiter_bufs( + xfs_mount_t *mp, + xfs_dqid_t firstid, + xfs_fsblock_t bno, + xfs_filblks_t blkcnt, + uint flags) +{ + xfs_buf_t *bp; + int error; + int type; + + ASSERT(blkcnt > 0); + type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : + (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); + error = 0; + + /* + * Blkcnt arg can be a very big number, and might even be + * larger than the log itself. So, we have to break it up into + * manageable-sized transactions. + * Note that we don't start a permanent transaction here; we might + * not be able to get a log reservation for the whole thing up front, + * and we don't really care to either, because we just discard + * everything if we were to crash in the middle of this loop. + */ + while (blkcnt--) { + error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, + XFS_FSB_TO_DADDR(mp, bno), + mp->m_quotainfo->qi_dqchunklen, 0, &bp); + if (error) + break; + + xfs_qm_reset_dqcounts(mp, bp, firstid, type); + xfs_bdwrite(mp, bp); + /* + * goto the next block. + */ + bno++; + firstid += mp->m_quotainfo->qi_dqperchunk; + } + return error; +} + +/* + * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a + * caller supplied function for every chunk of dquots that we find. + */ +STATIC int +xfs_qm_dqiterate( + xfs_mount_t *mp, + xfs_inode_t *qip, + uint flags) +{ + xfs_bmbt_irec_t *map; + int i, nmaps; /* number of map entries */ + int error; /* return value */ + xfs_fileoff_t lblkno; + xfs_filblks_t maxlblkcnt; + xfs_dqid_t firstid; + xfs_fsblock_t rablkno; + xfs_filblks_t rablkcnt; + + error = 0; + /* + * This looks racy, but we can't keep an inode lock across a + * trans_reserve. But, this gets called during quotacheck, and that + * happens only at mount time which is single threaded. + */ + if (qip->i_d.di_nblocks == 0) + return 0; + + map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); + + lblkno = 0; + maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); + do { + nmaps = XFS_DQITER_MAP_SIZE; + /* + * We aren't changing the inode itself. Just changing + * some of its data. No new blocks are added here, and + * the inode is never added to the transaction. + */ + xfs_ilock(qip, XFS_ILOCK_SHARED); + error = xfs_bmapi(NULL, qip, lblkno, + maxlblkcnt - lblkno, + XFS_BMAPI_METADATA, + NULL, + 0, map, &nmaps, NULL); + xfs_iunlock(qip, XFS_ILOCK_SHARED); + if (error) + break; + + ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); + for (i = 0; i < nmaps; i++) { + ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); + ASSERT(map[i].br_blockcount); + + + lblkno += map[i].br_blockcount; + + if (map[i].br_startblock == HOLESTARTBLOCK) + continue; + + firstid = (xfs_dqid_t) map[i].br_startoff * + mp->m_quotainfo->qi_dqperchunk; + /* + * Do a read-ahead on the next extent. + */ + if ((i+1 < nmaps) && + (map[i+1].br_startblock != HOLESTARTBLOCK)) { + rablkcnt = map[i+1].br_blockcount; + rablkno = map[i+1].br_startblock; + while (rablkcnt--) { + xfs_buf_readahead(mp->m_ddev_targp, + XFS_FSB_TO_DADDR(mp, rablkno), + mp->m_quotainfo->qi_dqchunklen); + rablkno++; + } + } + /* + * Iterate thru all the blks in the extent and + * reset the counters of all the dquots inside them. + */ + if ((error = xfs_qm_dqiter_bufs(mp, + firstid, + map[i].br_startblock, + map[i].br_blockcount, + flags))) { + break; + } + } + + if (error) + break; + } while (nmaps > 0); + + kmem_free(map); + + return error; +} + +/* + * Called by dqusage_adjust in doing a quotacheck. + * + * Given the inode, and a dquot id this updates both the incore dqout as well + * as the buffer copy. This is so that once the quotacheck is done, we can + * just log all the buffers, as opposed to logging numerous updates to + * individual dquots. + */ +STATIC int +xfs_qm_quotacheck_dqadjust( + struct xfs_inode *ip, + xfs_dqid_t id, + uint type, + xfs_qcnt_t nblks, + xfs_qcnt_t rtblks) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_dquot *dqp; + int error; + + error = xfs_qm_dqget(mp, ip, id, type, + XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); + if (error) { + /* + * Shouldn't be able to turn off quotas here. + */ + ASSERT(error != ESRCH); + ASSERT(error != ENOENT); + return error; + } + + trace_xfs_dqadjust(dqp); + + /* + * Adjust the inode count and the block count to reflect this inode's + * resource usage. + */ + be64_add_cpu(&dqp->q_core.d_icount, 1); + dqp->q_res_icount++; + if (nblks) { + be64_add_cpu(&dqp->q_core.d_bcount, nblks); + dqp->q_res_bcount += nblks; + } + if (rtblks) { + be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); + dqp->q_res_rtbcount += rtblks; + } + + /* + * Set default limits, adjust timers (since we changed usages) + * + * There are no timers for the default values set in the root dquot. + */ + if (dqp->q_core.d_id) { + xfs_qm_adjust_dqlimits(mp, &dqp->q_core); + xfs_qm_adjust_dqtimers(mp, &dqp->q_core); + } + + dqp->dq_flags |= XFS_DQ_DIRTY; + xfs_qm_dqput(dqp); + return 0; +} + +STATIC int +xfs_qm_get_rtblks( + xfs_inode_t *ip, + xfs_qcnt_t *O_rtblks) +{ + xfs_filblks_t rtblks; /* total rt blks */ + xfs_extnum_t idx; /* extent record index */ + xfs_ifork_t *ifp; /* inode fork pointer */ + xfs_extnum_t nextents; /* number of extent entries */ + int error; + + ASSERT(XFS_IS_REALTIME_INODE(ip)); + ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); + if (!(ifp->if_flags & XFS_IFEXTENTS)) { + if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) + return error; + } + rtblks = 0; + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + for (idx = 0; idx < nextents; idx++) + rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); + *O_rtblks = (xfs_qcnt_t)rtblks; + return 0; +} + +/* + * callback routine supplied to bulkstat(). Given an inumber, find its + * dquots and update them to account for resources taken by that inode. + */ +/* ARGSUSED */ +STATIC int +xfs_qm_dqusage_adjust( + xfs_mount_t *mp, /* mount point for filesystem */ + xfs_ino_t ino, /* inode number to get data for */ + void __user *buffer, /* not used */ + int ubsize, /* not used */ + int *ubused, /* not used */ + int *res) /* result code value */ +{ + xfs_inode_t *ip; + xfs_qcnt_t nblks, rtblks = 0; + int error; + + ASSERT(XFS_IS_QUOTA_RUNNING(mp)); + + /* + * rootino must have its resources accounted for, not so with the quota + * inodes. + */ + if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { + *res = BULKSTAT_RV_NOTHING; + return XFS_ERROR(EINVAL); + } + + /* + * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget + * interface expects the inode to be exclusively locked because that's + * the case in all other instances. It's OK that we do this because + * quotacheck is done only at mount time. + */ + error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); + if (error) { + *res = BULKSTAT_RV_NOTHING; + return error; + } + + ASSERT(ip->i_delayed_blks == 0); + + if (XFS_IS_REALTIME_INODE(ip)) { + /* + * Walk thru the extent list and count the realtime blocks. + */ + error = xfs_qm_get_rtblks(ip, &rtblks); + if (error) + goto error0; + } + + nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; + + /* + * Add the (disk blocks and inode) resources occupied by this + * inode to its dquots. We do this adjustment in the incore dquot, + * and also copy the changes to its buffer. + * We don't care about putting these changes in a transaction + * envelope because if we crash in the middle of a 'quotacheck' + * we have to start from the beginning anyway. + * Once we're done, we'll log all the dquot bufs. + * + * The *QUOTA_ON checks below may look pretty racy, but quotachecks + * and quotaoffs don't race. (Quotachecks happen at mount time only). + */ + if (XFS_IS_UQUOTA_ON(mp)) { + error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, + XFS_DQ_USER, nblks, rtblks); + if (error) + goto error0; + } + + if (XFS_IS_GQUOTA_ON(mp)) { + error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, + XFS_DQ_GROUP, nblks, rtblks); + if (error) + goto error0; + } + + if (XFS_IS_PQUOTA_ON(mp)) { + error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), + XFS_DQ_PROJ, nblks, rtblks); + if (error) + goto error0; + } + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + IRELE(ip); + *res = BULKSTAT_RV_DIDONE; + return 0; + +error0: + xfs_iunlock(ip, XFS_ILOCK_EXCL); + IRELE(ip); + *res = BULKSTAT_RV_GIVEUP; + return error; +} + +/* + * Walk thru all the filesystem inodes and construct a consistent view + * of the disk quota world. If the quotacheck fails, disable quotas. + */ +int +xfs_qm_quotacheck( + xfs_mount_t *mp) +{ + int done, count, error; + xfs_ino_t lastino; + size_t structsz; + xfs_inode_t *uip, *gip; + uint flags; + + count = INT_MAX; + structsz = 1; + lastino = 0; + flags = 0; + + ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); + ASSERT(XFS_IS_QUOTA_RUNNING(mp)); + + /* + * There should be no cached dquots. The (simplistic) quotacheck + * algorithm doesn't like that. + */ + ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); + + xfs_notice(mp, "Quotacheck needed: Please wait."); + + /* + * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset + * their counters to zero. We need a clean slate. + * We don't log our changes till later. + */ + uip = mp->m_quotainfo->qi_uquotaip; + if (uip) { + error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); + if (error) + goto error_return; + flags |= XFS_UQUOTA_CHKD; + } + + gip = mp->m_quotainfo->qi_gquotaip; + if (gip) { + error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? + XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); + if (error) + goto error_return; + flags |= XFS_OQUOTA_CHKD; + } + + do { + /* + * Iterate thru all the inodes in the file system, + * adjusting the corresponding dquot counters in core. + */ + error = xfs_bulkstat(mp, &lastino, &count, + xfs_qm_dqusage_adjust, + structsz, NULL, &done); + if (error) + break; + + } while (!done); + + /* + * We've made all the changes that we need to make incore. + * Flush them down to disk buffers if everything was updated + * successfully. + */ + if (!error) + error = xfs_qm_dqflush_all(mp, 0); + + /* + * We can get this error if we couldn't do a dquot allocation inside + * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the + * dirty dquots that might be cached, we just want to get rid of them + * and turn quotaoff. The dquots won't be attached to any of the inodes + * at this point (because we intentionally didn't in dqget_noattach). + */ + if (error) { + xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); + goto error_return; + } + + /* + * We didn't log anything, because if we crashed, we'll have to + * start the quotacheck from scratch anyway. However, we must make + * sure that our dquot changes are secure before we put the + * quotacheck'd stamp on the superblock. So, here we do a synchronous + * flush. + */ + XFS_bflush(mp->m_ddev_targp); + + /* + * If one type of quotas is off, then it will lose its + * quotachecked status, since we won't be doing accounting for + * that type anymore. + */ + mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); + mp->m_qflags |= flags; + + error_return: + if (error) { + xfs_warn(mp, + "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", + error); + /* + * We must turn off quotas. + */ + ASSERT(mp->m_quotainfo != NULL); + ASSERT(xfs_Gqm != NULL); + xfs_qm_destroy_quotainfo(mp); + if (xfs_mount_reset_sbqflags(mp)) { + xfs_warn(mp, + "Quotacheck: Failed to reset quota flags."); + } + } else + xfs_notice(mp, "Quotacheck: Done."); + return (error); +} + +/* + * This is called after the superblock has been read in and we're ready to + * iget the quota inodes. + */ +STATIC int +xfs_qm_init_quotainos( + xfs_mount_t *mp) +{ + xfs_inode_t *uip, *gip; + int error; + __int64_t sbflags; + uint flags; + + ASSERT(mp->m_quotainfo); + uip = gip = NULL; + sbflags = 0; + flags = 0; + + /* + * Get the uquota and gquota inodes + */ + if (xfs_sb_version_hasquota(&mp->m_sb)) { + if (XFS_IS_UQUOTA_ON(mp) && + mp->m_sb.sb_uquotino != NULLFSINO) { + ASSERT(mp->m_sb.sb_uquotino > 0); + if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, + 0, 0, &uip))) + return XFS_ERROR(error); + } + if (XFS_IS_OQUOTA_ON(mp) && + mp->m_sb.sb_gquotino != NULLFSINO) { + ASSERT(mp->m_sb.sb_gquotino > 0); + if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, + 0, 0, &gip))) { + if (uip) + IRELE(uip); + return XFS_ERROR(error); + } + } + } else { + flags |= XFS_QMOPT_SBVERSION; + sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | + XFS_SB_GQUOTINO | XFS_SB_QFLAGS); + } + + /* + * Create the two inodes, if they don't exist already. The changes + * made above will get added to a transaction and logged in one of + * the qino_alloc calls below. If the device is readonly, + * temporarily switch to read-write to do this. + */ + if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { + if ((error = xfs_qm_qino_alloc(mp, &uip, + sbflags | XFS_SB_UQUOTINO, + flags | XFS_QMOPT_UQUOTA))) + return XFS_ERROR(error); + + flags &= ~XFS_QMOPT_SBVERSION; + } + if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { + flags |= (XFS_IS_GQUOTA_ON(mp) ? + XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); + error = xfs_qm_qino_alloc(mp, &gip, + sbflags | XFS_SB_GQUOTINO, flags); + if (error) { + if (uip) + IRELE(uip); + + return XFS_ERROR(error); + } + } + + mp->m_quotainfo->qi_uquotaip = uip; + mp->m_quotainfo->qi_gquotaip = gip; + + return 0; +} + + + +/* + * Just pop the least recently used dquot off the freelist and + * recycle it. The returned dquot is locked. + */ +STATIC xfs_dquot_t * +xfs_qm_dqreclaim_one(void) +{ + xfs_dquot_t *dqpout; + xfs_dquot_t *dqp; + int restarts; + int startagain; + + restarts = 0; + dqpout = NULL; + + /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ +again: + startagain = 0; + mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); + + list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { + struct xfs_mount *mp = dqp->q_mount; + xfs_dqlock(dqp); + + /* + * We are racing with dqlookup here. Naturally we don't + * want to reclaim a dquot that lookup wants. We release the + * freelist lock and start over, so that lookup will grab + * both the dquot and the freelistlock. + */ + if (dqp->dq_flags & XFS_DQ_WANT) { + ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); + + trace_xfs_dqreclaim_want(dqp); + XQM_STATS_INC(xqmstats.xs_qm_dqwants); + restarts++; + startagain = 1; + goto dqunlock; + } + + /* + * If the dquot is inactive, we are assured that it is + * not on the mplist or the hashlist, and that makes our + * life easier. + */ + if (dqp->dq_flags & XFS_DQ_INACTIVE) { + ASSERT(mp == NULL); + ASSERT(! XFS_DQ_IS_DIRTY(dqp)); + ASSERT(list_empty(&dqp->q_hashlist)); + ASSERT(list_empty(&dqp->q_mplist)); + list_del_init(&dqp->q_freelist); + xfs_Gqm->qm_dqfrlist_cnt--; + dqpout = dqp; + XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); + goto dqunlock; + } + + ASSERT(dqp->q_hash); + ASSERT(!list_empty(&dqp->q_mplist)); + + /* + * Try to grab the flush lock. If this dquot is in the process + * of getting flushed to disk, we don't want to reclaim it. + */ + if (!xfs_dqflock_nowait(dqp)) + goto dqunlock; + + /* + * We have the flush lock so we know that this is not in the + * process of being flushed. So, if this is dirty, flush it + * DELWRI so that we don't get a freelist infested with + * dirty dquots. + */ + if (XFS_DQ_IS_DIRTY(dqp)) { + int error; + + trace_xfs_dqreclaim_dirty(dqp); + + /* + * We flush it delayed write, so don't bother + * releasing the freelist lock. + */ + error = xfs_qm_dqflush(dqp, 0); + if (error) { + xfs_warn(mp, "%s: dquot %p flush failed", + __func__, dqp); + } + goto dqunlock; + } + + /* + * We're trying to get the hashlock out of order. This races + * with dqlookup; so, we giveup and goto the next dquot if + * we couldn't get the hashlock. This way, we won't starve + * a dqlookup process that holds the hashlock that is + * waiting for the freelist lock. + */ + if (!mutex_trylock(&dqp->q_hash->qh_lock)) { + restarts++; + goto dqfunlock; + } + + /* + * This races with dquot allocation code as well as dqflush_all + * and reclaim code. So, if we failed to grab the mplist lock, + * giveup everything and start over. + */ + if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { + restarts++; + startagain = 1; + goto qhunlock; + } + + ASSERT(dqp->q_nrefs == 0); + list_del_init(&dqp->q_mplist); + mp->m_quotainfo->qi_dquots--; + mp->m_quotainfo->qi_dqreclaims++; + list_del_init(&dqp->q_hashlist); + dqp->q_hash->qh_version++; + list_del_init(&dqp->q_freelist); + xfs_Gqm->qm_dqfrlist_cnt--; + dqpout = dqp; + mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); +qhunlock: + mutex_unlock(&dqp->q_hash->qh_lock); +dqfunlock: + xfs_dqfunlock(dqp); +dqunlock: + xfs_dqunlock(dqp); + if (dqpout) + break; + if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) + break; + if (startagain) { + mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); + goto again; + } + } + mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); + return dqpout; +} + +/* + * Traverse the freelist of dquots and attempt to reclaim a maximum of + * 'howmany' dquots. This operation races with dqlookup(), and attempts to + * favor the lookup function ... + */ +STATIC int +xfs_qm_shake_freelist( + int howmany) +{ + int nreclaimed = 0; + xfs_dquot_t *dqp; + + if (howmany <= 0) + return 0; + + while (nreclaimed < howmany) { + dqp = xfs_qm_dqreclaim_one(); + if (!dqp) + return nreclaimed; + xfs_qm_dqdestroy(dqp); + nreclaimed++; + } + return nreclaimed; +} + +/* + * The kmem_shake interface is invoked when memory is running low. + */ +/* ARGSUSED */ +STATIC int +xfs_qm_shake( + struct shrinker *shrink, + struct shrink_control *sc) +{ + int ndqused, nfree, n; + gfp_t gfp_mask = sc->gfp_mask; + + if (!kmem_shake_allow(gfp_mask)) + return 0; + if (!xfs_Gqm) + return 0; + + nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ + /* incore dquots in all f/s's */ + ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; + + ASSERT(ndqused >= 0); + + if (nfree <= ndqused && nfree < ndquot) + return 0; + + ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ + n = nfree - ndqused - ndquot; /* # over target */ + + return xfs_qm_shake_freelist(MAX(nfree, n)); +} + + +/*------------------------------------------------------------------*/ + +/* + * Return a new incore dquot. Depending on the number of + * dquots in the system, we either allocate a new one on the kernel heap, + * or reclaim a free one. + * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed + * to reclaim an existing one from the freelist. + */ +boolean_t +xfs_qm_dqalloc_incore( + xfs_dquot_t **O_dqpp) +{ + xfs_dquot_t *dqp; + + /* + * Check against high water mark to see if we want to pop + * a nincompoop dquot off the freelist. + */ + if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { + /* + * Try to recycle a dquot from the freelist. + */ + if ((dqp = xfs_qm_dqreclaim_one())) { + XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); + /* + * Just zero the core here. The rest will get + * reinitialized by caller. XXX we shouldn't even + * do this zero ... + */ + memset(&dqp->q_core, 0, sizeof(dqp->q_core)); + *O_dqpp = dqp; + return B_FALSE; + } + XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); + } + + /* + * Allocate a brand new dquot on the kernel heap and return it + * to the caller to initialize. + */ + ASSERT(xfs_Gqm->qm_dqzone != NULL); + *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); + atomic_inc(&xfs_Gqm->qm_totaldquots); + + return B_TRUE; +} + + +/* + * Start a transaction and write the incore superblock changes to + * disk. flags parameter indicates which fields have changed. + */ +int +xfs_qm_write_sb_changes( + xfs_mount_t *mp, + __int64_t flags) +{ + xfs_trans_t *tp; + int error; + + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); + if ((error = xfs_trans_reserve(tp, 0, + mp->m_sb.sb_sectsize + 128, 0, + 0, + XFS_DEFAULT_LOG_COUNT))) { + xfs_trans_cancel(tp, 0); + return error; + } + + xfs_mod_sb(tp, flags); + error = xfs_trans_commit(tp, 0); + + return error; +} + + +/* --------------- utility functions for vnodeops ---------------- */ + + +/* + * Given an inode, a uid, gid and prid make sure that we have + * allocated relevant dquot(s) on disk, and that we won't exceed inode + * quotas by creating this file. + * This also attaches dquot(s) to the given inode after locking it, + * and returns the dquots corresponding to the uid and/or gid. + * + * in : inode (unlocked) + * out : udquot, gdquot with references taken and unlocked + */ +int +xfs_qm_vop_dqalloc( + struct xfs_inode *ip, + uid_t uid, + gid_t gid, + prid_t prid, + uint flags, + struct xfs_dquot **O_udqpp, + struct xfs_dquot **O_gdqpp) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_dquot *uq, *gq; + int error; + uint lockflags; + + if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) + return 0; + + lockflags = XFS_ILOCK_EXCL; + xfs_ilock(ip, lockflags); + + if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) + gid = ip->i_d.di_gid; + + /* + * Attach the dquot(s) to this inode, doing a dquot allocation + * if necessary. The dquot(s) will not be locked. + */ + if (XFS_NOT_DQATTACHED(mp, ip)) { + error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); + if (error) { + xfs_iunlock(ip, lockflags); + return error; + } + } + + uq = gq = NULL; + if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { + if (ip->i_d.di_uid != uid) { + /* + * What we need is the dquot that has this uid, and + * if we send the inode to dqget, the uid of the inode + * takes priority over what's sent in the uid argument. + * We must unlock inode here before calling dqget if + * we're not sending the inode, because otherwise + * we'll deadlock by doing trans_reserve while + * holding ilock. + */ + xfs_iunlock(ip, lockflags); + if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, + XFS_DQ_USER, + XFS_QMOPT_DQALLOC | + XFS_QMOPT_DOWARN, + &uq))) { + ASSERT(error != ENOENT); + return error; + } + /* + * Get the ilock in the right order. + */ + xfs_dqunlock(uq); + lockflags = XFS_ILOCK_SHARED; + xfs_ilock(ip, lockflags); + } else { + /* + * Take an extra reference, because we'll return + * this to caller + */ + ASSERT(ip->i_udquot); + uq = ip->i_udquot; + xfs_dqlock(uq); + XFS_DQHOLD(uq); + xfs_dqunlock(uq); + } + } + if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { + if (ip->i_d.di_gid != gid) { + xfs_iunlock(ip, lockflags); + if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, + XFS_DQ_GROUP, + XFS_QMOPT_DQALLOC | + XFS_QMOPT_DOWARN, + &gq))) { + if (uq) + xfs_qm_dqrele(uq); + ASSERT(error != ENOENT); + return error; + } + xfs_dqunlock(gq); + lockflags = XFS_ILOCK_SHARED; + xfs_ilock(ip, lockflags); + } else { + ASSERT(ip->i_gdquot); + gq = ip->i_gdquot; + xfs_dqlock(gq); + XFS_DQHOLD(gq); + xfs_dqunlock(gq); + } + } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { + if (xfs_get_projid(ip) != prid) { + xfs_iunlock(ip, lockflags); + if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, + XFS_DQ_PROJ, + XFS_QMOPT_DQALLOC | + XFS_QMOPT_DOWARN, + &gq))) { + if (uq) + xfs_qm_dqrele(uq); + ASSERT(error != ENOENT); + return (error); + } + xfs_dqunlock(gq); + lockflags = XFS_ILOCK_SHARED; + xfs_ilock(ip, lockflags); + } else { + ASSERT(ip->i_gdquot); + gq = ip->i_gdquot; + xfs_dqlock(gq); + XFS_DQHOLD(gq); + xfs_dqunlock(gq); + } + } + if (uq) + trace_xfs_dquot_dqalloc(ip); + + xfs_iunlock(ip, lockflags); + if (O_udqpp) + *O_udqpp = uq; + else if (uq) + xfs_qm_dqrele(uq); + if (O_gdqpp) + *O_gdqpp = gq; + else if (gq) + xfs_qm_dqrele(gq); + return 0; +} + +/* + * Actually transfer ownership, and do dquot modifications. + * These were already reserved. + */ +xfs_dquot_t * +xfs_qm_vop_chown( + xfs_trans_t *tp, + xfs_inode_t *ip, + xfs_dquot_t **IO_olddq, + xfs_dquot_t *newdq) +{ + xfs_dquot_t *prevdq; + uint bfield = XFS_IS_REALTIME_INODE(ip) ? + XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; + + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); + + /* old dquot */ + prevdq = *IO_olddq; + ASSERT(prevdq); + ASSERT(prevdq != newdq); + + xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); + xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); + + /* the sparkling new dquot */ + xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); + xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); + + /* + * Take an extra reference, because the inode + * is going to keep this dquot pointer even + * after the trans_commit. + */ + xfs_dqlock(newdq); + XFS_DQHOLD(newdq); + xfs_dqunlock(newdq); + *IO_olddq = newdq; + + return prevdq; +} + +/* + * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). + */ +int +xfs_qm_vop_chown_reserve( + xfs_trans_t *tp, + xfs_inode_t *ip, + xfs_dquot_t *udqp, + xfs_dquot_t *gdqp, + uint flags) +{ + xfs_mount_t *mp = ip->i_mount; + uint delblks, blkflags, prjflags = 0; + xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; + int error; + + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); + ASSERT(XFS_IS_QUOTA_RUNNING(mp)); + + delblks = ip->i_delayed_blks; + delblksudq = delblksgdq = unresudq = unresgdq = NULL; + blkflags = XFS_IS_REALTIME_INODE(ip) ? + XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; + + if (XFS_IS_UQUOTA_ON(mp) && udqp && + ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { + delblksudq = udqp; + /* + * If there are delayed allocation blocks, then we have to + * unreserve those from the old dquot, and add them to the + * new dquot. + */ + if (delblks) { + ASSERT(ip->i_udquot); + unresudq = ip->i_udquot; + } + } + if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { + if (XFS_IS_PQUOTA_ON(ip->i_mount) && + xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) + prjflags = XFS_QMOPT_ENOSPC; + + if (prjflags || + (XFS_IS_GQUOTA_ON(ip->i_mount) && + ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { + delblksgdq = gdqp; + if (delblks) { + ASSERT(ip->i_gdquot); + unresgdq = ip->i_gdquot; + } + } + } + + if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, + delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, + flags | blkflags | prjflags))) + return (error); + + /* + * Do the delayed blks reservations/unreservations now. Since, these + * are done without the help of a transaction, if a reservation fails + * its previous reservations won't be automatically undone by trans + * code. So, we have to do it manually here. + */ + if (delblks) { + /* + * Do the reservations first. Unreservation can't fail. + */ + ASSERT(delblksudq || delblksgdq); + ASSERT(unresudq || unresgdq); + if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, + delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, + flags | blkflags | prjflags))) + return (error); + xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, + unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, + blkflags); + } + + return (0); +} + +int +xfs_qm_vop_rename_dqattach( + struct xfs_inode **i_tab) +{ + struct xfs_mount *mp = i_tab[0]->i_mount; + int i; + + if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) + return 0; + + for (i = 0; (i < 4 && i_tab[i]); i++) { + struct xfs_inode *ip = i_tab[i]; + int error; + + /* + * Watch out for duplicate entries in the table. + */ + if (i == 0 || ip != i_tab[i-1]) { + if (XFS_NOT_DQATTACHED(mp, ip)) { + error = xfs_qm_dqattach(ip, 0); + if (error) + return error; + } + } + } + return 0; +} + +void +xfs_qm_vop_create_dqattach( + struct xfs_trans *tp, + struct xfs_inode *ip, + struct xfs_dquot *udqp, + struct xfs_dquot *gdqp) +{ + struct xfs_mount *mp = tp->t_mountp; + + if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) + return; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + ASSERT(XFS_IS_QUOTA_RUNNING(mp)); + + if (udqp) { + xfs_dqlock(udqp); + XFS_DQHOLD(udqp); + xfs_dqunlock(udqp); + ASSERT(ip->i_udquot == NULL); + ip->i_udquot = udqp; + ASSERT(XFS_IS_UQUOTA_ON(mp)); + ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); + xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); + } + if (gdqp) { + xfs_dqlock(gdqp); + XFS_DQHOLD(gdqp); + xfs_dqunlock(gdqp); + ASSERT(ip->i_gdquot == NULL); + ip->i_gdquot = gdqp; + ASSERT(XFS_IS_OQUOTA_ON(mp)); + ASSERT((XFS_IS_GQUOTA_ON(mp) ? + ip->i_d.di_gid : xfs_get_projid(ip)) == + be32_to_cpu(gdqp->q_core.d_id)); + xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); + } +} + diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h new file mode 100644 index 000000000000..43b9abe1052c --- /dev/null +++ b/fs/xfs/xfs_qm.h @@ -0,0 +1,166 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_QM_H__ +#define __XFS_QM_H__ + +#include "xfs_dquot_item.h" +#include "xfs_dquot.h" +#include "xfs_quota_priv.h" +#include "xfs_qm_stats.h" + +struct xfs_qm; +struct xfs_inode; + +extern uint ndquot; +extern struct mutex xfs_Gqm_lock; +extern struct xfs_qm *xfs_Gqm; +extern kmem_zone_t *qm_dqzone; +extern kmem_zone_t *qm_dqtrxzone; + +/* + * Used in xfs_qm_sync called by xfs_sync to count the max times that it can + * iterate over the mountpt's dquot list in one call. + */ +#define XFS_QM_SYNC_MAX_RESTARTS 7 + +/* + * Ditto, for xfs_qm_dqreclaim_one. + */ +#define XFS_QM_RECLAIM_MAX_RESTARTS 4 + +/* + * Ideal ratio of free to in use dquots. Quota manager makes an attempt + * to keep this balance. + */ +#define XFS_QM_DQFREE_RATIO 2 + +/* + * Dquot hashtable constants/threshold values. + */ +#define XFS_QM_HASHSIZE_LOW (PAGE_SIZE / sizeof(xfs_dqhash_t)) +#define XFS_QM_HASHSIZE_HIGH ((PAGE_SIZE * 4) / sizeof(xfs_dqhash_t)) + +/* + * This defines the unit of allocation of dquots. + * Currently, it is just one file system block, and a 4K blk contains 30 + * (136 * 30 = 4080) dquots. It's probably not worth trying to make + * this more dynamic. + * XXXsup However, if this number is changed, we have to make sure that we don't + * implicitly assume that we do allocations in chunks of a single filesystem + * block in the dquot/xqm code. + */ +#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 + +typedef xfs_dqhash_t xfs_dqlist_t; + +/* + * Quota Manager (global) structure. Lives only in core. + */ +typedef struct xfs_qm { + xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */ + xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */ + uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */ + struct list_head qm_dqfrlist; /* freelist of dquots */ + struct mutex qm_dqfrlist_lock; + int qm_dqfrlist_cnt; + atomic_t qm_totaldquots; /* total incore dquots */ + uint qm_nrefs; /* file systems with quota on */ + int qm_dqfree_ratio;/* ratio of free to inuse dquots */ + kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */ + kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */ +} xfs_qm_t; + +/* + * Various quota information for individual filesystems. + * The mount structure keeps a pointer to this. + */ +typedef struct xfs_quotainfo { + xfs_inode_t *qi_uquotaip; /* user quota inode */ + xfs_inode_t *qi_gquotaip; /* group quota inode */ + struct list_head qi_dqlist; /* all dquots in filesys */ + struct mutex qi_dqlist_lock; + int qi_dquots; + int qi_dqreclaims; /* a change here indicates + a removal in the dqlist */ + time_t qi_btimelimit; /* limit for blks timer */ + time_t qi_itimelimit; /* limit for inodes timer */ + time_t qi_rtbtimelimit;/* limit for rt blks timer */ + xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ + xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ + xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ + struct mutex qi_quotaofflock;/* to serialize quotaoff */ + xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ + uint qi_dqperchunk; /* # ondisk dqs in above chunk */ + xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ + xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ + xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ + xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ + xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ + xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ +} xfs_quotainfo_t; + + +extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); +extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, + xfs_dquot_t *, xfs_dquot_t *, long, long, uint); +extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); +extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *); + +/* + * We keep the usr and grp dquots separately so that locking will be easier + * to do at commit time. All transactions that we know of at this point + * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. + */ +#define XFS_QM_TRANS_MAXDQS 2 +typedef struct xfs_dquot_acct { + xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS]; + xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS]; +} xfs_dquot_acct_t; + +/* + * Users are allowed to have a usage exceeding their softlimit for + * a period this long. + */ +#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ +#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ +#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ + +#define XFS_QM_BWARNLIMIT 5 +#define XFS_QM_IWARNLIMIT 5 +#define XFS_QM_RTBWARNLIMIT 5 + +extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); +extern int xfs_qm_quotacheck(xfs_mount_t *); +extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); + +/* dquot stuff */ +extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **); +extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint); +extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); + +/* quota ops */ +extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint); +extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint, + fs_disk_quota_t *); +extern int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint, + fs_disk_quota_t *); +extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *); +extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint); +extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint); + +#endif /* __XFS_QM_H__ */ diff --git a/fs/xfs/xfs_qm_bhv.c b/fs/xfs/xfs_qm_bhv.c new file mode 100644 index 000000000000..a0a829addca9 --- /dev/null +++ b/fs/xfs/xfs_qm_bhv.c @@ -0,0 +1,176 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_itable.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_qm.h" + + +STATIC void +xfs_fill_statvfs_from_dquot( + struct kstatfs *statp, + xfs_disk_dquot_t *dp) +{ + __uint64_t limit; + + limit = dp->d_blk_softlimit ? + be64_to_cpu(dp->d_blk_softlimit) : + be64_to_cpu(dp->d_blk_hardlimit); + if (limit && statp->f_blocks > limit) { + statp->f_blocks = limit; + statp->f_bfree = statp->f_bavail = + (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ? + (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0; + } + + limit = dp->d_ino_softlimit ? + be64_to_cpu(dp->d_ino_softlimit) : + be64_to_cpu(dp->d_ino_hardlimit); + if (limit && statp->f_files > limit) { + statp->f_files = limit; + statp->f_ffree = + (statp->f_files > be64_to_cpu(dp->d_icount)) ? + (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0; + } +} + + +/* + * Directory tree accounting is implemented using project quotas, where + * the project identifier is inherited from parent directories. + * A statvfs (df, etc.) of a directory that is using project quota should + * return a statvfs of the project, not the entire filesystem. + * This makes such trees appear as if they are filesystems in themselves. + */ +void +xfs_qm_statvfs( + xfs_inode_t *ip, + struct kstatfs *statp) +{ + xfs_mount_t *mp = ip->i_mount; + xfs_dquot_t *dqp; + + if (!xfs_qm_dqget(mp, NULL, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) { + xfs_fill_statvfs_from_dquot(statp, &dqp->q_core); + xfs_qm_dqput(dqp); + } +} + +int +xfs_qm_newmount( + xfs_mount_t *mp, + uint *needquotamount, + uint *quotaflags) +{ + uint quotaondisk; + uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0; + + quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) && + (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT); + + if (quotaondisk) { + uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT; + pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT; + gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT; + } + + /* + * If the device itself is read-only, we can't allow + * the user to change the state of quota on the mount - + * this would generate a transaction on the ro device, + * which would lead to an I/O error and shutdown + */ + + if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) || + (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) || + (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) || + (!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) || + (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) || + (!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) && + xfs_dev_is_read_only(mp, "changing quota state")) { + xfs_warn(mp, "please mount with%s%s%s%s.", + (!quotaondisk ? "out quota" : ""), + (uquotaondisk ? " usrquota" : ""), + (pquotaondisk ? " prjquota" : ""), + (gquotaondisk ? " grpquota" : "")); + return XFS_ERROR(EPERM); + } + + if (XFS_IS_QUOTA_ON(mp) || quotaondisk) { + /* + * Call mount_quotas at this point only if we won't have to do + * a quotacheck. + */ + if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) { + /* + * If an error occurred, qm_mount_quotas code + * has already disabled quotas. So, just finish + * mounting, and get on with the boring life + * without disk quotas. + */ + xfs_qm_mount_quotas(mp); + } else { + /* + * Clear the quota flags, but remember them. This + * is so that the quota code doesn't get invoked + * before we're ready. This can happen when an + * inode goes inactive and wants to free blocks, + * or via xfs_log_mount_finish. + */ + *needquotamount = B_TRUE; + *quotaflags = mp->m_qflags; + mp->m_qflags = 0; + } + } + + return 0; +} + +void __init +xfs_qm_init(void) +{ + printk(KERN_INFO "SGI XFS Quota Management subsystem\n"); + mutex_init(&xfs_Gqm_lock); + xfs_qm_init_procfs(); +} + +void __exit +xfs_qm_exit(void) +{ + xfs_qm_cleanup_procfs(); + if (qm_dqzone) + kmem_zone_destroy(qm_dqzone); + if (qm_dqtrxzone) + kmem_zone_destroy(qm_dqtrxzone); +} diff --git a/fs/xfs/xfs_qm_stats.c b/fs/xfs/xfs_qm_stats.c new file mode 100644 index 000000000000..8671a0b32644 --- /dev/null +++ b/fs/xfs/xfs_qm_stats.c @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_itable.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_qm.h" + +struct xqmstats xqmstats; + +static int xqm_proc_show(struct seq_file *m, void *v) +{ + /* maximum; incore; ratio free to inuse; freelist */ + seq_printf(m, "%d\t%d\t%d\t%u\n", + ndquot, + xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0, + xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0, + xfs_Gqm? xfs_Gqm->qm_dqfrlist_cnt : 0); + return 0; +} + +static int xqm_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, xqm_proc_show, NULL); +} + +static const struct file_operations xqm_proc_fops = { + .owner = THIS_MODULE, + .open = xqm_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int xqmstat_proc_show(struct seq_file *m, void *v) +{ + /* quota performance statistics */ + seq_printf(m, "qm %u %u %u %u %u %u %u %u\n", + xqmstats.xs_qm_dqreclaims, + xqmstats.xs_qm_dqreclaim_misses, + xqmstats.xs_qm_dquot_dups, + xqmstats.xs_qm_dqcachemisses, + xqmstats.xs_qm_dqcachehits, + xqmstats.xs_qm_dqwants, + xqmstats.xs_qm_dqshake_reclaims, + xqmstats.xs_qm_dqinact_reclaims); + return 0; +} + +static int xqmstat_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, xqmstat_proc_show, NULL); +} + +static const struct file_operations xqmstat_proc_fops = { + .owner = THIS_MODULE, + .open = xqmstat_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +void +xfs_qm_init_procfs(void) +{ + proc_create("fs/xfs/xqmstat", 0, NULL, &xqmstat_proc_fops); + proc_create("fs/xfs/xqm", 0, NULL, &xqm_proc_fops); +} + +void +xfs_qm_cleanup_procfs(void) +{ + remove_proc_entry("fs/xfs/xqm", NULL); + remove_proc_entry("fs/xfs/xqmstat", NULL); +} diff --git a/fs/xfs/xfs_qm_stats.h b/fs/xfs/xfs_qm_stats.h new file mode 100644 index 000000000000..5b964fc0dc09 --- /dev/null +++ b/fs/xfs/xfs_qm_stats.h @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2002 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_QM_STATS_H__ +#define __XFS_QM_STATS_H__ + +#if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF) + +/* + * XQM global statistics + */ +struct xqmstats { + __uint32_t xs_qm_dqreclaims; + __uint32_t xs_qm_dqreclaim_misses; + __uint32_t xs_qm_dquot_dups; + __uint32_t xs_qm_dqcachemisses; + __uint32_t xs_qm_dqcachehits; + __uint32_t xs_qm_dqwants; + __uint32_t xs_qm_dqshake_reclaims; + __uint32_t xs_qm_dqinact_reclaims; +}; + +extern struct xqmstats xqmstats; + +# define XQM_STATS_INC(count) ( (count)++ ) + +extern void xfs_qm_init_procfs(void); +extern void xfs_qm_cleanup_procfs(void); + +#else + +# define XQM_STATS_INC(count) do { } while (0) + +static inline void xfs_qm_init_procfs(void) { }; +static inline void xfs_qm_cleanup_procfs(void) { }; + +#endif + +#endif /* __XFS_QM_STATS_H__ */ diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c new file mode 100644 index 000000000000..609246f42e6c --- /dev/null +++ b/fs/xfs/xfs_qm_syscalls.c @@ -0,0 +1,906 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include + +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_itable.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_utils.h" +#include "xfs_qm.h" +#include "xfs_trace.h" + +STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint); +STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *, + uint); +STATIC uint xfs_qm_export_flags(uint); +STATIC uint xfs_qm_export_qtype_flags(uint); +STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *, + fs_disk_quota_t *); + + +/* + * Turn off quota accounting and/or enforcement for all udquots and/or + * gdquots. Called only at unmount time. + * + * This assumes that there are no dquots of this file system cached + * incore, and modifies the ondisk dquot directly. Therefore, for example, + * it is an error to call this twice, without purging the cache. + */ +int +xfs_qm_scall_quotaoff( + xfs_mount_t *mp, + uint flags) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + uint dqtype; + int error; + uint inactivate_flags; + xfs_qoff_logitem_t *qoffstart; + int nculprits; + + /* + * No file system can have quotas enabled on disk but not in core. + * Note that quota utilities (like quotaoff) _expect_ + * errno == EEXIST here. + */ + if ((mp->m_qflags & flags) == 0) + return XFS_ERROR(EEXIST); + error = 0; + + flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); + + /* + * We don't want to deal with two quotaoffs messing up each other, + * so we're going to serialize it. quotaoff isn't exactly a performance + * critical thing. + * If quotaoff, then we must be dealing with the root filesystem. + */ + ASSERT(q); + mutex_lock(&q->qi_quotaofflock); + + /* + * If we're just turning off quota enforcement, change mp and go. + */ + if ((flags & XFS_ALL_QUOTA_ACCT) == 0) { + mp->m_qflags &= ~(flags); + + spin_lock(&mp->m_sb_lock); + mp->m_sb.sb_qflags = mp->m_qflags; + spin_unlock(&mp->m_sb_lock); + mutex_unlock(&q->qi_quotaofflock); + + /* XXX what to do if error ? Revert back to old vals incore ? */ + error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS); + return (error); + } + + dqtype = 0; + inactivate_flags = 0; + /* + * If accounting is off, we must turn enforcement off, clear the + * quota 'CHKD' certificate to make it known that we have to + * do a quotacheck the next time this quota is turned on. + */ + if (flags & XFS_UQUOTA_ACCT) { + dqtype |= XFS_QMOPT_UQUOTA; + flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD); + inactivate_flags |= XFS_UQUOTA_ACTIVE; + } + if (flags & XFS_GQUOTA_ACCT) { + dqtype |= XFS_QMOPT_GQUOTA; + flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); + inactivate_flags |= XFS_GQUOTA_ACTIVE; + } else if (flags & XFS_PQUOTA_ACCT) { + dqtype |= XFS_QMOPT_PQUOTA; + flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); + inactivate_flags |= XFS_PQUOTA_ACTIVE; + } + + /* + * Nothing to do? Don't complain. This happens when we're just + * turning off quota enforcement. + */ + if ((mp->m_qflags & flags) == 0) + goto out_unlock; + + /* + * Write the LI_QUOTAOFF log record, and do SB changes atomically, + * and synchronously. If we fail to write, we should abort the + * operation as it cannot be recovered safely if we crash. + */ + error = xfs_qm_log_quotaoff(mp, &qoffstart, flags); + if (error) + goto out_unlock; + + /* + * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct + * to take care of the race between dqget and quotaoff. We don't take + * any special locks to reset these bits. All processes need to check + * these bits *after* taking inode lock(s) to see if the particular + * quota type is in the process of being turned off. If *ACTIVE, it is + * guaranteed that all dquot structures and all quotainode ptrs will all + * stay valid as long as that inode is kept locked. + * + * There is no turning back after this. + */ + mp->m_qflags &= ~inactivate_flags; + + /* + * Give back all the dquot reference(s) held by inodes. + * Here we go thru every single incore inode in this file system, and + * do a dqrele on the i_udquot/i_gdquot that it may have. + * Essentially, as long as somebody has an inode locked, this guarantees + * that quotas will not be turned off. This is handy because in a + * transaction once we lock the inode(s) and check for quotaon, we can + * depend on the quota inodes (and other things) being valid as long as + * we keep the lock(s). + */ + xfs_qm_dqrele_all_inodes(mp, flags); + + /* + * Next we make the changes in the quota flag in the mount struct. + * This isn't protected by a particular lock directly, because we + * don't want to take a mrlock every time we depend on quotas being on. + */ + mp->m_qflags &= ~(flags); + + /* + * Go through all the dquots of this file system and purge them, + * according to what was turned off. We may not be able to get rid + * of all dquots, because dquots can have temporary references that + * are not attached to inodes. eg. xfs_setattr, xfs_create. + * So, if we couldn't purge all the dquots from the filesystem, + * we can't get rid of the incore data structures. + */ + while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype))) + delay(10 * nculprits); + + /* + * Transactions that had started before ACTIVE state bit was cleared + * could have logged many dquots, so they'd have higher LSNs than + * the first QUOTAOFF log record does. If we happen to crash when + * the tail of the log has gone past the QUOTAOFF record, but + * before the last dquot modification, those dquots __will__ + * recover, and that's not good. + * + * So, we have QUOTAOFF start and end logitems; the start + * logitem won't get overwritten until the end logitem appears... + */ + error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags); + if (error) { + /* We're screwed now. Shutdown is the only option. */ + xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); + goto out_unlock; + } + + /* + * If quotas is completely disabled, close shop. + */ + if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) || + ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) { + mutex_unlock(&q->qi_quotaofflock); + xfs_qm_destroy_quotainfo(mp); + return (0); + } + + /* + * Release our quotainode references if we don't need them anymore. + */ + if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) { + IRELE(q->qi_uquotaip); + q->qi_uquotaip = NULL; + } + if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && q->qi_gquotaip) { + IRELE(q->qi_gquotaip); + q->qi_gquotaip = NULL; + } + +out_unlock: + mutex_unlock(&q->qi_quotaofflock); + return error; +} + +STATIC int +xfs_qm_scall_trunc_qfile( + struct xfs_mount *mp, + xfs_ino_t ino) +{ + struct xfs_inode *ip; + struct xfs_trans *tp; + int error; + + if (ino == NULLFSINO) + return 0; + + error = xfs_iget(mp, NULL, ino, 0, 0, &ip); + if (error) + return error; + + xfs_ilock(ip, XFS_IOLOCK_EXCL); + + tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE); + error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, + XFS_TRANS_PERM_LOG_RES, + XFS_ITRUNCATE_LOG_COUNT); + if (error) { + xfs_trans_cancel(tp, 0); + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + goto out_put; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip); + + error = xfs_itruncate_data(&tp, ip, 0); + if (error) { + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | + XFS_TRANS_ABORT); + goto out_unlock; + } + + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + +out_unlock: + xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); +out_put: + IRELE(ip); + return error; +} + +int +xfs_qm_scall_trunc_qfiles( + xfs_mount_t *mp, + uint flags) +{ + int error = 0, error2 = 0; + + if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) { + xfs_debug(mp, "%s: flags=%x m_qflags=%x\n", + __func__, flags, mp->m_qflags); + return XFS_ERROR(EINVAL); + } + + if (flags & XFS_DQ_USER) + error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino); + if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) + error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino); + + return error ? error : error2; +} + +/* + * Switch on (a given) quota enforcement for a filesystem. This takes + * effect immediately. + * (Switching on quota accounting must be done at mount time.) + */ +int +xfs_qm_scall_quotaon( + xfs_mount_t *mp, + uint flags) +{ + int error; + uint qf; + __int64_t sbflags; + + flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); + /* + * Switching on quota accounting must be done at mount time. + */ + flags &= ~(XFS_ALL_QUOTA_ACCT); + + sbflags = 0; + + if (flags == 0) { + xfs_debug(mp, "%s: zero flags, m_qflags=%x\n", + __func__, mp->m_qflags); + return XFS_ERROR(EINVAL); + } + + /* No fs can turn on quotas with a delayed effect */ + ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0); + + /* + * Can't enforce without accounting. We check the superblock + * qflags here instead of m_qflags because rootfs can have + * quota acct on ondisk without m_qflags' knowing. + */ + if (((flags & XFS_UQUOTA_ACCT) == 0 && + (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 && + (flags & XFS_UQUOTA_ENFD)) + || + ((flags & XFS_PQUOTA_ACCT) == 0 && + (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 && + (flags & XFS_GQUOTA_ACCT) == 0 && + (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 && + (flags & XFS_OQUOTA_ENFD))) { + xfs_debug(mp, + "%s: Can't enforce without acct, flags=%x sbflags=%x\n", + __func__, flags, mp->m_sb.sb_qflags); + return XFS_ERROR(EINVAL); + } + /* + * If everything's up to-date incore, then don't waste time. + */ + if ((mp->m_qflags & flags) == flags) + return XFS_ERROR(EEXIST); + + /* + * Change sb_qflags on disk but not incore mp->qflags + * if this is the root filesystem. + */ + spin_lock(&mp->m_sb_lock); + qf = mp->m_sb.sb_qflags; + mp->m_sb.sb_qflags = qf | flags; + spin_unlock(&mp->m_sb_lock); + + /* + * There's nothing to change if it's the same. + */ + if ((qf & flags) == flags && sbflags == 0) + return XFS_ERROR(EEXIST); + sbflags |= XFS_SB_QFLAGS; + + if ((error = xfs_qm_write_sb_changes(mp, sbflags))) + return (error); + /* + * If we aren't trying to switch on quota enforcement, we are done. + */ + if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) != + (mp->m_qflags & XFS_UQUOTA_ACCT)) || + ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) != + (mp->m_qflags & XFS_PQUOTA_ACCT)) || + ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) != + (mp->m_qflags & XFS_GQUOTA_ACCT)) || + (flags & XFS_ALL_QUOTA_ENFD) == 0) + return (0); + + if (! XFS_IS_QUOTA_RUNNING(mp)) + return XFS_ERROR(ESRCH); + + /* + * Switch on quota enforcement in core. + */ + mutex_lock(&mp->m_quotainfo->qi_quotaofflock); + mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD); + mutex_unlock(&mp->m_quotainfo->qi_quotaofflock); + + return (0); +} + + +/* + * Return quota status information, such as uquota-off, enforcements, etc. + */ +int +xfs_qm_scall_getqstat( + struct xfs_mount *mp, + struct fs_quota_stat *out) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + struct xfs_inode *uip, *gip; + boolean_t tempuqip, tempgqip; + + uip = gip = NULL; + tempuqip = tempgqip = B_FALSE; + memset(out, 0, sizeof(fs_quota_stat_t)); + + out->qs_version = FS_QSTAT_VERSION; + if (!xfs_sb_version_hasquota(&mp->m_sb)) { + out->qs_uquota.qfs_ino = NULLFSINO; + out->qs_gquota.qfs_ino = NULLFSINO; + return (0); + } + out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & + (XFS_ALL_QUOTA_ACCT| + XFS_ALL_QUOTA_ENFD)); + out->qs_pad = 0; + out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino; + out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; + + if (q) { + uip = q->qi_uquotaip; + gip = q->qi_gquotaip; + } + if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { + if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, + 0, 0, &uip) == 0) + tempuqip = B_TRUE; + } + if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) { + if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, + 0, 0, &gip) == 0) + tempgqip = B_TRUE; + } + if (uip) { + out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks; + out->qs_uquota.qfs_nextents = uip->i_d.di_nextents; + if (tempuqip) + IRELE(uip); + } + if (gip) { + out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks; + out->qs_gquota.qfs_nextents = gip->i_d.di_nextents; + if (tempgqip) + IRELE(gip); + } + if (q) { + out->qs_incoredqs = q->qi_dquots; + out->qs_btimelimit = q->qi_btimelimit; + out->qs_itimelimit = q->qi_itimelimit; + out->qs_rtbtimelimit = q->qi_rtbtimelimit; + out->qs_bwarnlimit = q->qi_bwarnlimit; + out->qs_iwarnlimit = q->qi_iwarnlimit; + } + return 0; +} + +#define XFS_DQ_MASK \ + (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK) + +/* + * Adjust quota limits, and start/stop timers accordingly. + */ +int +xfs_qm_scall_setqlim( + xfs_mount_t *mp, + xfs_dqid_t id, + uint type, + fs_disk_quota_t *newlim) +{ + struct xfs_quotainfo *q = mp->m_quotainfo; + xfs_disk_dquot_t *ddq; + xfs_dquot_t *dqp; + xfs_trans_t *tp; + int error; + xfs_qcnt_t hard, soft; + + if (newlim->d_fieldmask & ~XFS_DQ_MASK) + return EINVAL; + if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0) + return 0; + + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM); + if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128, + 0, 0, XFS_DEFAULT_LOG_COUNT))) { + xfs_trans_cancel(tp, 0); + return (error); + } + + /* + * We don't want to race with a quotaoff so take the quotaoff lock. + * (We don't hold an inode lock, so there's nothing else to stop + * a quotaoff from happening). (XXXThis doesn't currently happen + * because we take the vfslock before calling xfs_qm_sysent). + */ + mutex_lock(&q->qi_quotaofflock); + + /* + * Get the dquot (locked), and join it to the transaction. + * Allocate the dquot if this doesn't exist. + */ + if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) { + xfs_trans_cancel(tp, XFS_TRANS_ABORT); + ASSERT(error != ENOENT); + goto out_unlock; + } + xfs_trans_dqjoin(tp, dqp); + ddq = &dqp->q_core; + + /* + * Make sure that hardlimits are >= soft limits before changing. + */ + hard = (newlim->d_fieldmask & FS_DQ_BHARD) ? + (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) : + be64_to_cpu(ddq->d_blk_hardlimit); + soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ? + (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) : + be64_to_cpu(ddq->d_blk_softlimit); + if (hard == 0 || hard >= soft) { + ddq->d_blk_hardlimit = cpu_to_be64(hard); + ddq->d_blk_softlimit = cpu_to_be64(soft); + if (id == 0) { + q->qi_bhardlimit = hard; + q->qi_bsoftlimit = soft; + } + } else { + xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft); + } + hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ? + (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) : + be64_to_cpu(ddq->d_rtb_hardlimit); + soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ? + (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) : + be64_to_cpu(ddq->d_rtb_softlimit); + if (hard == 0 || hard >= soft) { + ddq->d_rtb_hardlimit = cpu_to_be64(hard); + ddq->d_rtb_softlimit = cpu_to_be64(soft); + if (id == 0) { + q->qi_rtbhardlimit = hard; + q->qi_rtbsoftlimit = soft; + } + } else { + xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft); + } + + hard = (newlim->d_fieldmask & FS_DQ_IHARD) ? + (xfs_qcnt_t) newlim->d_ino_hardlimit : + be64_to_cpu(ddq->d_ino_hardlimit); + soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ? + (xfs_qcnt_t) newlim->d_ino_softlimit : + be64_to_cpu(ddq->d_ino_softlimit); + if (hard == 0 || hard >= soft) { + ddq->d_ino_hardlimit = cpu_to_be64(hard); + ddq->d_ino_softlimit = cpu_to_be64(soft); + if (id == 0) { + q->qi_ihardlimit = hard; + q->qi_isoftlimit = soft; + } + } else { + xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft); + } + + /* + * Update warnings counter(s) if requested + */ + if (newlim->d_fieldmask & FS_DQ_BWARNS) + ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns); + if (newlim->d_fieldmask & FS_DQ_IWARNS) + ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns); + if (newlim->d_fieldmask & FS_DQ_RTBWARNS) + ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns); + + if (id == 0) { + /* + * Timelimits for the super user set the relative time + * the other users can be over quota for this file system. + * If it is zero a default is used. Ditto for the default + * soft and hard limit values (already done, above), and + * for warnings. + */ + if (newlim->d_fieldmask & FS_DQ_BTIMER) { + q->qi_btimelimit = newlim->d_btimer; + ddq->d_btimer = cpu_to_be32(newlim->d_btimer); + } + if (newlim->d_fieldmask & FS_DQ_ITIMER) { + q->qi_itimelimit = newlim->d_itimer; + ddq->d_itimer = cpu_to_be32(newlim->d_itimer); + } + if (newlim->d_fieldmask & FS_DQ_RTBTIMER) { + q->qi_rtbtimelimit = newlim->d_rtbtimer; + ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer); + } + if (newlim->d_fieldmask & FS_DQ_BWARNS) + q->qi_bwarnlimit = newlim->d_bwarns; + if (newlim->d_fieldmask & FS_DQ_IWARNS) + q->qi_iwarnlimit = newlim->d_iwarns; + if (newlim->d_fieldmask & FS_DQ_RTBWARNS) + q->qi_rtbwarnlimit = newlim->d_rtbwarns; + } else { + /* + * If the user is now over quota, start the timelimit. + * The user will not be 'warned'. + * Note that we keep the timers ticking, whether enforcement + * is on or off. We don't really want to bother with iterating + * over all ondisk dquots and turning the timers on/off. + */ + xfs_qm_adjust_dqtimers(mp, ddq); + } + dqp->dq_flags |= XFS_DQ_DIRTY; + xfs_trans_log_dquot(tp, dqp); + + error = xfs_trans_commit(tp, 0); + xfs_qm_dqrele(dqp); + + out_unlock: + mutex_unlock(&q->qi_quotaofflock); + return error; +} + +int +xfs_qm_scall_getquota( + xfs_mount_t *mp, + xfs_dqid_t id, + uint type, + fs_disk_quota_t *out) +{ + xfs_dquot_t *dqp; + int error; + + /* + * Try to get the dquot. We don't want it allocated on disk, so + * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't + * exist, we'll get ENOENT back. + */ + if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) { + return (error); + } + + /* + * If everything's NULL, this dquot doesn't quite exist as far as + * our utility programs are concerned. + */ + if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) { + xfs_qm_dqput(dqp); + return XFS_ERROR(ENOENT); + } + /* + * Convert the disk dquot to the exportable format + */ + xfs_qm_export_dquot(mp, &dqp->q_core, out); + xfs_qm_dqput(dqp); + return (error ? XFS_ERROR(EFAULT) : 0); +} + + +STATIC int +xfs_qm_log_quotaoff_end( + xfs_mount_t *mp, + xfs_qoff_logitem_t *startqoff, + uint flags) +{ + xfs_trans_t *tp; + int error; + xfs_qoff_logitem_t *qoffi; + + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END); + + if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2, + 0, 0, XFS_DEFAULT_LOG_COUNT))) { + xfs_trans_cancel(tp, 0); + return (error); + } + + qoffi = xfs_trans_get_qoff_item(tp, startqoff, + flags & XFS_ALL_QUOTA_ACCT); + xfs_trans_log_quotaoff_item(tp, qoffi); + + /* + * We have to make sure that the transaction is secure on disk before we + * return and actually stop quota accounting. So, make it synchronous. + * We don't care about quotoff's performance. + */ + xfs_trans_set_sync(tp); + error = xfs_trans_commit(tp, 0); + return (error); +} + + +STATIC int +xfs_qm_log_quotaoff( + xfs_mount_t *mp, + xfs_qoff_logitem_t **qoffstartp, + uint flags) +{ + xfs_trans_t *tp; + int error; + xfs_qoff_logitem_t *qoffi=NULL; + uint oldsbqflag=0; + + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF); + if ((error = xfs_trans_reserve(tp, 0, + sizeof(xfs_qoff_logitem_t) * 2 + + mp->m_sb.sb_sectsize + 128, + 0, + 0, + XFS_DEFAULT_LOG_COUNT))) { + goto error0; + } + + qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT); + xfs_trans_log_quotaoff_item(tp, qoffi); + + spin_lock(&mp->m_sb_lock); + oldsbqflag = mp->m_sb.sb_qflags; + mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL; + spin_unlock(&mp->m_sb_lock); + + xfs_mod_sb(tp, XFS_SB_QFLAGS); + + /* + * We have to make sure that the transaction is secure on disk before we + * return and actually stop quota accounting. So, make it synchronous. + * We don't care about quotoff's performance. + */ + xfs_trans_set_sync(tp); + error = xfs_trans_commit(tp, 0); + +error0: + if (error) { + xfs_trans_cancel(tp, 0); + /* + * No one else is modifying sb_qflags, so this is OK. + * We still hold the quotaofflock. + */ + spin_lock(&mp->m_sb_lock); + mp->m_sb.sb_qflags = oldsbqflag; + spin_unlock(&mp->m_sb_lock); + } + *qoffstartp = qoffi; + return (error); +} + + +/* + * Translate an internal style on-disk-dquot to the exportable format. + * The main differences are that the counters/limits are all in Basic + * Blocks (BBs) instead of the internal FSBs, and all on-disk data has + * to be converted to the native endianness. + */ +STATIC void +xfs_qm_export_dquot( + xfs_mount_t *mp, + xfs_disk_dquot_t *src, + struct fs_disk_quota *dst) +{ + memset(dst, 0, sizeof(*dst)); + dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */ + dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags); + dst->d_id = be32_to_cpu(src->d_id); + dst->d_blk_hardlimit = + XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit)); + dst->d_blk_softlimit = + XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit)); + dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit); + dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit); + dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount)); + dst->d_icount = be64_to_cpu(src->d_icount); + dst->d_btimer = be32_to_cpu(src->d_btimer); + dst->d_itimer = be32_to_cpu(src->d_itimer); + dst->d_iwarns = be16_to_cpu(src->d_iwarns); + dst->d_bwarns = be16_to_cpu(src->d_bwarns); + dst->d_rtb_hardlimit = + XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit)); + dst->d_rtb_softlimit = + XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit)); + dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount)); + dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer); + dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns); + + /* + * Internally, we don't reset all the timers when quota enforcement + * gets turned off. No need to confuse the user level code, + * so return zeroes in that case. + */ + if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) || + (!XFS_IS_OQUOTA_ENFORCED(mp) && + (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) { + dst->d_btimer = 0; + dst->d_itimer = 0; + dst->d_rtbtimer = 0; + } + +#ifdef DEBUG + if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) || + (XFS_IS_OQUOTA_ENFORCED(mp) && + (dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) && + dst->d_id != 0) { + if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) && + (dst->d_blk_softlimit > 0)) { + ASSERT(dst->d_btimer != 0); + } + if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) && + (dst->d_ino_softlimit > 0)) { + ASSERT(dst->d_itimer != 0); + } + } +#endif +} + +STATIC uint +xfs_qm_export_qtype_flags( + uint flags) +{ + /* + * Can't be more than one, or none. + */ + ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) != + (FS_PROJ_QUOTA | FS_USER_QUOTA)); + ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) != + (FS_PROJ_QUOTA | FS_GROUP_QUOTA)); + ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) != + (FS_USER_QUOTA | FS_GROUP_QUOTA)); + ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0); + + return (flags & XFS_DQ_USER) ? + FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ? + FS_PROJ_QUOTA : FS_GROUP_QUOTA; +} + +STATIC uint +xfs_qm_export_flags( + uint flags) +{ + uint uflags; + + uflags = 0; + if (flags & XFS_UQUOTA_ACCT) + uflags |= FS_QUOTA_UDQ_ACCT; + if (flags & XFS_PQUOTA_ACCT) + uflags |= FS_QUOTA_PDQ_ACCT; + if (flags & XFS_GQUOTA_ACCT) + uflags |= FS_QUOTA_GDQ_ACCT; + if (flags & XFS_UQUOTA_ENFD) + uflags |= FS_QUOTA_UDQ_ENFD; + if (flags & (XFS_OQUOTA_ENFD)) { + uflags |= (flags & XFS_GQUOTA_ACCT) ? + FS_QUOTA_GDQ_ENFD : FS_QUOTA_PDQ_ENFD; + } + return (uflags); +} + + +STATIC int +xfs_dqrele_inode( + struct xfs_inode *ip, + struct xfs_perag *pag, + int flags) +{ + /* skip quota inodes */ + if (ip == ip->i_mount->m_quotainfo->qi_uquotaip || + ip == ip->i_mount->m_quotainfo->qi_gquotaip) { + ASSERT(ip->i_udquot == NULL); + ASSERT(ip->i_gdquot == NULL); + return 0; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) { + xfs_qm_dqrele(ip->i_udquot); + ip->i_udquot = NULL; + } + if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) { + xfs_qm_dqrele(ip->i_gdquot); + ip->i_gdquot = NULL; + } + xfs_iunlock(ip, XFS_ILOCK_EXCL); + return 0; +} + + +/* + * Go thru all the inodes in the file system, releasing their dquots. + * + * Note that the mount structure gets modified to indicate that quotas are off + * AFTER this, in the case of quotaoff. + */ +void +xfs_qm_dqrele_all_inodes( + struct xfs_mount *mp, + uint flags) +{ + ASSERT(mp->m_quotainfo); + xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags); +} diff --git a/fs/xfs/xfs_quota_priv.h b/fs/xfs/xfs_quota_priv.h new file mode 100644 index 000000000000..94a3d927d716 --- /dev/null +++ b/fs/xfs/xfs_quota_priv.h @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_QUOTA_PRIV_H__ +#define __XFS_QUOTA_PRIV_H__ + +/* + * Number of bmaps that we ask from bmapi when doing a quotacheck. + * We make this restriction to keep the memory usage to a minimum. + */ +#define XFS_DQITER_MAP_SIZE 10 + +/* + * Hash into a bucket in the dquot hash table, based on . + */ +#define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \ + (__psunsigned_t)(id)) & \ + (xfs_Gqm->qm_dqhashmask - 1)) +#define XFS_DQ_HASH(mp, id, type) (type == XFS_DQ_USER ? \ + (xfs_Gqm->qm_usr_dqhtable + \ + XFS_DQ_HASHVAL(mp, id)) : \ + (xfs_Gqm->qm_grp_dqhtable + \ + XFS_DQ_HASHVAL(mp, id))) +#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ + !dqp->q_core.d_blk_hardlimit && \ + !dqp->q_core.d_blk_softlimit && \ + !dqp->q_core.d_rtb_hardlimit && \ + !dqp->q_core.d_rtb_softlimit && \ + !dqp->q_core.d_ino_hardlimit && \ + !dqp->q_core.d_ino_softlimit && \ + !dqp->q_core.d_bcount && \ + !dqp->q_core.d_rtbcount && \ + !dqp->q_core.d_icount) + +#define DQFLAGTO_TYPESTR(d) (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \ + (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \ + (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???"))) + +#endif /* __XFS_QUOTA_PRIV_H__ */ diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c new file mode 100644 index 000000000000..7e76f537abb7 --- /dev/null +++ b/fs/xfs/xfs_quotaops.c @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2008, Christoph Hellwig + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_sb.h" +#include "xfs_inum.h" +#include "xfs_log.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_quota.h" +#include "xfs_trans.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_qm.h" +#include + + +STATIC int +xfs_quota_type(int type) +{ + switch (type) { + case USRQUOTA: + return XFS_DQ_USER; + case GRPQUOTA: + return XFS_DQ_GROUP; + default: + return XFS_DQ_PROJ; + } +} + +STATIC int +xfs_fs_get_xstate( + struct super_block *sb, + struct fs_quota_stat *fqs) +{ + struct xfs_mount *mp = XFS_M(sb); + + if (!XFS_IS_QUOTA_RUNNING(mp)) + return -ENOSYS; + return -xfs_qm_scall_getqstat(mp, fqs); +} + +STATIC int +xfs_fs_set_xstate( + struct super_block *sb, + unsigned int uflags, + int op) +{ + struct xfs_mount *mp = XFS_M(sb); + unsigned int flags = 0; + + if (sb->s_flags & MS_RDONLY) + return -EROFS; + if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp)) + return -ENOSYS; + + if (uflags & FS_QUOTA_UDQ_ACCT) + flags |= XFS_UQUOTA_ACCT; + if (uflags & FS_QUOTA_PDQ_ACCT) + flags |= XFS_PQUOTA_ACCT; + if (uflags & FS_QUOTA_GDQ_ACCT) + flags |= XFS_GQUOTA_ACCT; + if (uflags & FS_QUOTA_UDQ_ENFD) + flags |= XFS_UQUOTA_ENFD; + if (uflags & (FS_QUOTA_PDQ_ENFD|FS_QUOTA_GDQ_ENFD)) + flags |= XFS_OQUOTA_ENFD; + + switch (op) { + case Q_XQUOTAON: + return -xfs_qm_scall_quotaon(mp, flags); + case Q_XQUOTAOFF: + if (!XFS_IS_QUOTA_ON(mp)) + return -EINVAL; + return -xfs_qm_scall_quotaoff(mp, flags); + case Q_XQUOTARM: + if (XFS_IS_QUOTA_ON(mp)) + return -EINVAL; + return -xfs_qm_scall_trunc_qfiles(mp, flags); + } + + return -EINVAL; +} + +STATIC int +xfs_fs_get_dqblk( + struct super_block *sb, + int type, + qid_t id, + struct fs_disk_quota *fdq) +{ + struct xfs_mount *mp = XFS_M(sb); + + if (!XFS_IS_QUOTA_RUNNING(mp)) + return -ENOSYS; + if (!XFS_IS_QUOTA_ON(mp)) + return -ESRCH; + + return -xfs_qm_scall_getquota(mp, id, xfs_quota_type(type), fdq); +} + +STATIC int +xfs_fs_set_dqblk( + struct super_block *sb, + int type, + qid_t id, + struct fs_disk_quota *fdq) +{ + struct xfs_mount *mp = XFS_M(sb); + + if (sb->s_flags & MS_RDONLY) + return -EROFS; + if (!XFS_IS_QUOTA_RUNNING(mp)) + return -ENOSYS; + if (!XFS_IS_QUOTA_ON(mp)) + return -ESRCH; + + return -xfs_qm_scall_setqlim(mp, id, xfs_quota_type(type), fdq); +} + +const struct quotactl_ops xfs_quotactl_operations = { + .get_xstate = xfs_fs_get_xstate, + .set_xstate = xfs_fs_set_xstate, + .get_dqblk = xfs_fs_get_dqblk, + .set_dqblk = xfs_fs_set_dqblk, +}; diff --git a/fs/xfs/xfs_stats.c b/fs/xfs/xfs_stats.c new file mode 100644 index 000000000000..76fdc5861932 --- /dev/null +++ b/fs/xfs/xfs_stats.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include + +DEFINE_PER_CPU(struct xfsstats, xfsstats); + +static int xfs_stat_proc_show(struct seq_file *m, void *v) +{ + int c, i, j, val; + __uint64_t xs_xstrat_bytes = 0; + __uint64_t xs_write_bytes = 0; + __uint64_t xs_read_bytes = 0; + + static const struct xstats_entry { + char *desc; + int endpoint; + } xstats[] = { + { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC }, + { "abt", XFSSTAT_END_ALLOC_BTREE }, + { "blk_map", XFSSTAT_END_BLOCK_MAPPING }, + { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE }, + { "dir", XFSSTAT_END_DIRECTORY_OPS }, + { "trans", XFSSTAT_END_TRANSACTIONS }, + { "ig", XFSSTAT_END_INODE_OPS }, + { "log", XFSSTAT_END_LOG_OPS }, + { "push_ail", XFSSTAT_END_TAIL_PUSHING }, + { "xstrat", XFSSTAT_END_WRITE_CONVERT }, + { "rw", XFSSTAT_END_READ_WRITE_OPS }, + { "attr", XFSSTAT_END_ATTRIBUTE_OPS }, + { "icluster", XFSSTAT_END_INODE_CLUSTER }, + { "vnodes", XFSSTAT_END_VNODE_OPS }, + { "buf", XFSSTAT_END_BUF }, + { "abtb2", XFSSTAT_END_ABTB_V2 }, + { "abtc2", XFSSTAT_END_ABTC_V2 }, + { "bmbt2", XFSSTAT_END_BMBT_V2 }, + { "ibt2", XFSSTAT_END_IBT_V2 }, + }; + + /* Loop over all stats groups */ + for (i=j = 0; i < ARRAY_SIZE(xstats); i++) { + seq_printf(m, "%s", xstats[i].desc); + /* inner loop does each group */ + while (j < xstats[i].endpoint) { + val = 0; + /* sum over all cpus */ + for_each_possible_cpu(c) + val += *(((__u32*)&per_cpu(xfsstats, c) + j)); + seq_printf(m, " %u", val); + j++; + } + seq_putc(m, '\n'); + } + /* extra precision counters */ + for_each_possible_cpu(i) { + xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; + xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; + xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; + } + + seq_printf(m, "xpc %Lu %Lu %Lu\n", + xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); + seq_printf(m, "debug %u\n", +#if defined(DEBUG) + 1); +#else + 0); +#endif + return 0; +} + +static int xfs_stat_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, xfs_stat_proc_show, NULL); +} + +static const struct file_operations xfs_stat_proc_fops = { + .owner = THIS_MODULE, + .open = xfs_stat_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +int +xfs_init_procfs(void) +{ + if (!proc_mkdir("fs/xfs", NULL)) + goto out; + + if (!proc_create("fs/xfs/stat", 0, NULL, + &xfs_stat_proc_fops)) + goto out_remove_entry; + return 0; + + out_remove_entry: + remove_proc_entry("fs/xfs", NULL); + out: + return -ENOMEM; +} + +void +xfs_cleanup_procfs(void) +{ + remove_proc_entry("fs/xfs/stat", NULL); + remove_proc_entry("fs/xfs", NULL); +} diff --git a/fs/xfs/xfs_stats.h b/fs/xfs/xfs_stats.h new file mode 100644 index 000000000000..736854b1ca1a --- /dev/null +++ b/fs/xfs/xfs_stats.h @@ -0,0 +1,223 @@ +/* + * Copyright (c) 2000,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_STATS_H__ +#define __XFS_STATS_H__ + + +#if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF) + +#include + +/* + * XFS global statistics + */ +struct xfsstats { +# define XFSSTAT_END_EXTENT_ALLOC 4 + __uint32_t xs_allocx; + __uint32_t xs_allocb; + __uint32_t xs_freex; + __uint32_t xs_freeb; +# define XFSSTAT_END_ALLOC_BTREE (XFSSTAT_END_EXTENT_ALLOC+4) + __uint32_t xs_abt_lookup; + __uint32_t xs_abt_compare; + __uint32_t xs_abt_insrec; + __uint32_t xs_abt_delrec; +# define XFSSTAT_END_BLOCK_MAPPING (XFSSTAT_END_ALLOC_BTREE+7) + __uint32_t xs_blk_mapr; + __uint32_t xs_blk_mapw; + __uint32_t xs_blk_unmap; + __uint32_t xs_add_exlist; + __uint32_t xs_del_exlist; + __uint32_t xs_look_exlist; + __uint32_t xs_cmp_exlist; +# define XFSSTAT_END_BLOCK_MAP_BTREE (XFSSTAT_END_BLOCK_MAPPING+4) + __uint32_t xs_bmbt_lookup; + __uint32_t xs_bmbt_compare; + __uint32_t xs_bmbt_insrec; + __uint32_t xs_bmbt_delrec; +# define XFSSTAT_END_DIRECTORY_OPS (XFSSTAT_END_BLOCK_MAP_BTREE+4) + __uint32_t xs_dir_lookup; + __uint32_t xs_dir_create; + __uint32_t xs_dir_remove; + __uint32_t xs_dir_getdents; +# define XFSSTAT_END_TRANSACTIONS (XFSSTAT_END_DIRECTORY_OPS+3) + __uint32_t xs_trans_sync; + __uint32_t xs_trans_async; + __uint32_t xs_trans_empty; +# define XFSSTAT_END_INODE_OPS (XFSSTAT_END_TRANSACTIONS+7) + __uint32_t xs_ig_attempts; + __uint32_t xs_ig_found; + __uint32_t xs_ig_frecycle; + __uint32_t xs_ig_missed; + __uint32_t xs_ig_dup; + __uint32_t xs_ig_reclaims; + __uint32_t xs_ig_attrchg; +# define XFSSTAT_END_LOG_OPS (XFSSTAT_END_INODE_OPS+5) + __uint32_t xs_log_writes; + __uint32_t xs_log_blocks; + __uint32_t xs_log_noiclogs; + __uint32_t xs_log_force; + __uint32_t xs_log_force_sleep; +# define XFSSTAT_END_TAIL_PUSHING (XFSSTAT_END_LOG_OPS+10) + __uint32_t xs_try_logspace; + __uint32_t xs_sleep_logspace; + __uint32_t xs_push_ail; + __uint32_t xs_push_ail_success; + __uint32_t xs_push_ail_pushbuf; + __uint32_t xs_push_ail_pinned; + __uint32_t xs_push_ail_locked; + __uint32_t xs_push_ail_flushing; + __uint32_t xs_push_ail_restarts; + __uint32_t xs_push_ail_flush; +# define XFSSTAT_END_WRITE_CONVERT (XFSSTAT_END_TAIL_PUSHING+2) + __uint32_t xs_xstrat_quick; + __uint32_t xs_xstrat_split; +# define XFSSTAT_END_READ_WRITE_OPS (XFSSTAT_END_WRITE_CONVERT+2) + __uint32_t xs_write_calls; + __uint32_t xs_read_calls; +# define XFSSTAT_END_ATTRIBUTE_OPS (XFSSTAT_END_READ_WRITE_OPS+4) + __uint32_t xs_attr_get; + __uint32_t xs_attr_set; + __uint32_t xs_attr_remove; + __uint32_t xs_attr_list; +# define XFSSTAT_END_INODE_CLUSTER (XFSSTAT_END_ATTRIBUTE_OPS+3) + __uint32_t xs_iflush_count; + __uint32_t xs_icluster_flushcnt; + __uint32_t xs_icluster_flushinode; +# define XFSSTAT_END_VNODE_OPS (XFSSTAT_END_INODE_CLUSTER+8) + __uint32_t vn_active; /* # vnodes not on free lists */ + __uint32_t vn_alloc; /* # times vn_alloc called */ + __uint32_t vn_get; /* # times vn_get called */ + __uint32_t vn_hold; /* # times vn_hold called */ + __uint32_t vn_rele; /* # times vn_rele called */ + __uint32_t vn_reclaim; /* # times vn_reclaim called */ + __uint32_t vn_remove; /* # times vn_remove called */ + __uint32_t vn_free; /* # times vn_free called */ +#define XFSSTAT_END_BUF (XFSSTAT_END_VNODE_OPS+9) + __uint32_t xb_get; + __uint32_t xb_create; + __uint32_t xb_get_locked; + __uint32_t xb_get_locked_waited; + __uint32_t xb_busy_locked; + __uint32_t xb_miss_locked; + __uint32_t xb_page_retries; + __uint32_t xb_page_found; + __uint32_t xb_get_read; +/* Version 2 btree counters */ +#define XFSSTAT_END_ABTB_V2 (XFSSTAT_END_BUF+15) + __uint32_t xs_abtb_2_lookup; + __uint32_t xs_abtb_2_compare; + __uint32_t xs_abtb_2_insrec; + __uint32_t xs_abtb_2_delrec; + __uint32_t xs_abtb_2_newroot; + __uint32_t xs_abtb_2_killroot; + __uint32_t xs_abtb_2_increment; + __uint32_t xs_abtb_2_decrement; + __uint32_t xs_abtb_2_lshift; + __uint32_t xs_abtb_2_rshift; + __uint32_t xs_abtb_2_split; + __uint32_t xs_abtb_2_join; + __uint32_t xs_abtb_2_alloc; + __uint32_t xs_abtb_2_free; + __uint32_t xs_abtb_2_moves; +#define XFSSTAT_END_ABTC_V2 (XFSSTAT_END_ABTB_V2+15) + __uint32_t xs_abtc_2_lookup; + __uint32_t xs_abtc_2_compare; + __uint32_t xs_abtc_2_insrec; + __uint32_t xs_abtc_2_delrec; + __uint32_t xs_abtc_2_newroot; + __uint32_t xs_abtc_2_killroot; + __uint32_t xs_abtc_2_increment; + __uint32_t xs_abtc_2_decrement; + __uint32_t xs_abtc_2_lshift; + __uint32_t xs_abtc_2_rshift; + __uint32_t xs_abtc_2_split; + __uint32_t xs_abtc_2_join; + __uint32_t xs_abtc_2_alloc; + __uint32_t xs_abtc_2_free; + __uint32_t xs_abtc_2_moves; +#define XFSSTAT_END_BMBT_V2 (XFSSTAT_END_ABTC_V2+15) + __uint32_t xs_bmbt_2_lookup; + __uint32_t xs_bmbt_2_compare; + __uint32_t xs_bmbt_2_insrec; + __uint32_t xs_bmbt_2_delrec; + __uint32_t xs_bmbt_2_newroot; + __uint32_t xs_bmbt_2_killroot; + __uint32_t xs_bmbt_2_increment; + __uint32_t xs_bmbt_2_decrement; + __uint32_t xs_bmbt_2_lshift; + __uint32_t xs_bmbt_2_rshift; + __uint32_t xs_bmbt_2_split; + __uint32_t xs_bmbt_2_join; + __uint32_t xs_bmbt_2_alloc; + __uint32_t xs_bmbt_2_free; + __uint32_t xs_bmbt_2_moves; +#define XFSSTAT_END_IBT_V2 (XFSSTAT_END_BMBT_V2+15) + __uint32_t xs_ibt_2_lookup; + __uint32_t xs_ibt_2_compare; + __uint32_t xs_ibt_2_insrec; + __uint32_t xs_ibt_2_delrec; + __uint32_t xs_ibt_2_newroot; + __uint32_t xs_ibt_2_killroot; + __uint32_t xs_ibt_2_increment; + __uint32_t xs_ibt_2_decrement; + __uint32_t xs_ibt_2_lshift; + __uint32_t xs_ibt_2_rshift; + __uint32_t xs_ibt_2_split; + __uint32_t xs_ibt_2_join; + __uint32_t xs_ibt_2_alloc; + __uint32_t xs_ibt_2_free; + __uint32_t xs_ibt_2_moves; +/* Extra precision counters */ + __uint64_t xs_xstrat_bytes; + __uint64_t xs_write_bytes; + __uint64_t xs_read_bytes; +}; + +DECLARE_PER_CPU(struct xfsstats, xfsstats); + +/* + * We don't disable preempt, not too worried about poking the + * wrong CPU's stat for now (also aggregated before reporting). + */ +#define XFS_STATS_INC(v) (per_cpu(xfsstats, current_cpu()).v++) +#define XFS_STATS_DEC(v) (per_cpu(xfsstats, current_cpu()).v--) +#define XFS_STATS_ADD(v, inc) (per_cpu(xfsstats, current_cpu()).v += (inc)) + +extern int xfs_init_procfs(void); +extern void xfs_cleanup_procfs(void); + + +#else /* !CONFIG_PROC_FS */ + +# define XFS_STATS_INC(count) +# define XFS_STATS_DEC(count) +# define XFS_STATS_ADD(count, inc) + +static inline int xfs_init_procfs(void) +{ + return 0; +} + +static inline void xfs_cleanup_procfs(void) +{ +} + +#endif /* !CONFIG_PROC_FS */ + +#endif /* __XFS_STATS_H__ */ diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c new file mode 100644 index 000000000000..9a72dda58bd0 --- /dev/null +++ b/fs/xfs/xfs_super.c @@ -0,0 +1,1773 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "xfs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_dir2.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_btree.h" +#include "xfs_ialloc.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_itable.h" +#include "xfs_fsops.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_utils.h" +#include "xfs_vnodeops.h" +#include "xfs_log_priv.h" +#include "xfs_trans_priv.h" +#include "xfs_filestream.h" +#include "xfs_da_btree.h" +#include "xfs_extfree_item.h" +#include "xfs_mru_cache.h" +#include "xfs_inode_item.h" +#include "xfs_sync.h" +#include "xfs_trace.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct super_operations xfs_super_operations; +static kmem_zone_t *xfs_ioend_zone; +mempool_t *xfs_ioend_pool; + +#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ +#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ +#define MNTOPT_LOGDEV "logdev" /* log device */ +#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ +#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ +#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ +#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ +#define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ +#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ +#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ +#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ +#define MNTOPT_MTPT "mtpt" /* filesystem mount point */ +#define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ +#define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ +#define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ +#define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ +#define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ +#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ +#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and + * unwritten extent conversion */ +#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ +#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ +#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ +#define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ +#define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ +#define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes + * in stat(). */ +#define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ +#define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ +#define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ +#define MNTOPT_QUOTA "quota" /* disk quotas (user) */ +#define MNTOPT_NOQUOTA "noquota" /* no quotas */ +#define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ +#define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ +#define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ +#define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ +#define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ +#define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ +#define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ +#define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ +#define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ +#define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ +#define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ +#define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ +#define MNTOPT_DISCARD "discard" /* Discard unused blocks */ +#define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ + +/* + * Table driven mount option parser. + * + * Currently only used for remount, but it will be used for mount + * in the future, too. + */ +enum { + Opt_barrier, Opt_nobarrier, Opt_err +}; + +static const match_table_t tokens = { + {Opt_barrier, "barrier"}, + {Opt_nobarrier, "nobarrier"}, + {Opt_err, NULL} +}; + + +STATIC unsigned long +suffix_strtoul(char *s, char **endp, unsigned int base) +{ + int last, shift_left_factor = 0; + char *value = s; + + last = strlen(value) - 1; + if (value[last] == 'K' || value[last] == 'k') { + shift_left_factor = 10; + value[last] = '\0'; + } + if (value[last] == 'M' || value[last] == 'm') { + shift_left_factor = 20; + value[last] = '\0'; + } + if (value[last] == 'G' || value[last] == 'g') { + shift_left_factor = 30; + value[last] = '\0'; + } + + return simple_strtoul((const char *)s, endp, base) << shift_left_factor; +} + +/* + * This function fills in xfs_mount_t fields based on mount args. + * Note: the superblock has _not_ yet been read in. + * + * Note that this function leaks the various device name allocations on + * failure. The caller takes care of them. + */ +STATIC int +xfs_parseargs( + struct xfs_mount *mp, + char *options) +{ + struct super_block *sb = mp->m_super; + char *this_char, *value, *eov; + int dsunit = 0; + int dswidth = 0; + int iosize = 0; + __uint8_t iosizelog = 0; + + /* + * set up the mount name first so all the errors will refer to the + * correct device. + */ + mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); + if (!mp->m_fsname) + return ENOMEM; + mp->m_fsname_len = strlen(mp->m_fsname) + 1; + + /* + * Copy binary VFS mount flags we are interested in. + */ + if (sb->s_flags & MS_RDONLY) + mp->m_flags |= XFS_MOUNT_RDONLY; + if (sb->s_flags & MS_DIRSYNC) + mp->m_flags |= XFS_MOUNT_DIRSYNC; + if (sb->s_flags & MS_SYNCHRONOUS) + mp->m_flags |= XFS_MOUNT_WSYNC; + + /* + * Set some default flags that could be cleared by the mount option + * parsing. + */ + mp->m_flags |= XFS_MOUNT_BARRIER; + mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; + mp->m_flags |= XFS_MOUNT_SMALL_INUMS; + mp->m_flags |= XFS_MOUNT_DELAYLOG; + + /* + * These can be overridden by the mount option parsing. + */ + mp->m_logbufs = -1; + mp->m_logbsize = -1; + + if (!options) + goto done; + + while ((this_char = strsep(&options, ",")) != NULL) { + if (!*this_char) + continue; + if ((value = strchr(this_char, '=')) != NULL) + *value++ = 0; + + if (!strcmp(this_char, MNTOPT_LOGBUFS)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + mp->m_logbufs = simple_strtoul(value, &eov, 10); + } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + mp->m_logbsize = suffix_strtoul(value, &eov, 10); + } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); + if (!mp->m_logname) + return ENOMEM; + } else if (!strcmp(this_char, MNTOPT_MTPT)) { + xfs_warn(mp, "%s option not allowed on this system", + this_char); + return EINVAL; + } else if (!strcmp(this_char, MNTOPT_RTDEV)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); + if (!mp->m_rtname) + return ENOMEM; + } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + iosize = simple_strtoul(value, &eov, 10); + iosizelog = ffs(iosize) - 1; + } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + iosize = suffix_strtoul(value, &eov, 10); + iosizelog = ffs(iosize) - 1; + } else if (!strcmp(this_char, MNTOPT_GRPID) || + !strcmp(this_char, MNTOPT_BSDGROUPS)) { + mp->m_flags |= XFS_MOUNT_GRPID; + } else if (!strcmp(this_char, MNTOPT_NOGRPID) || + !strcmp(this_char, MNTOPT_SYSVGROUPS)) { + mp->m_flags &= ~XFS_MOUNT_GRPID; + } else if (!strcmp(this_char, MNTOPT_WSYNC)) { + mp->m_flags |= XFS_MOUNT_WSYNC; + } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { + mp->m_flags |= XFS_MOUNT_NORECOVERY; + } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { + mp->m_flags |= XFS_MOUNT_NOALIGN; + } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { + mp->m_flags |= XFS_MOUNT_SWALLOC; + } else if (!strcmp(this_char, MNTOPT_SUNIT)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + dsunit = simple_strtoul(value, &eov, 10); + } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { + if (!value || !*value) { + xfs_warn(mp, "%s option requires an argument", + this_char); + return EINVAL; + } + dswidth = simple_strtoul(value, &eov, 10); + } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { + mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; +#if !XFS_BIG_INUMS + xfs_warn(mp, "%s option not allowed on this system", + this_char); + return EINVAL; +#endif + } else if (!strcmp(this_char, MNTOPT_NOUUID)) { + mp->m_flags |= XFS_MOUNT_NOUUID; + } else if (!strcmp(this_char, MNTOPT_BARRIER)) { + mp->m_flags |= XFS_MOUNT_BARRIER; + } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { + mp->m_flags &= ~XFS_MOUNT_BARRIER; + } else if (!strcmp(this_char, MNTOPT_IKEEP)) { + mp->m_flags |= XFS_MOUNT_IKEEP; + } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { + mp->m_flags &= ~XFS_MOUNT_IKEEP; + } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { + mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; + } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { + mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; + } else if (!strcmp(this_char, MNTOPT_ATTR2)) { + mp->m_flags |= XFS_MOUNT_ATTR2; + } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { + mp->m_flags &= ~XFS_MOUNT_ATTR2; + mp->m_flags |= XFS_MOUNT_NOATTR2; + } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { + mp->m_flags |= XFS_MOUNT_FILESTREAMS; + } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { + mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | + XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | + XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | + XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); + } else if (!strcmp(this_char, MNTOPT_QUOTA) || + !strcmp(this_char, MNTOPT_UQUOTA) || + !strcmp(this_char, MNTOPT_USRQUOTA)) { + mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | + XFS_UQUOTA_ENFD); + } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || + !strcmp(this_char, MNTOPT_UQUOTANOENF)) { + mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); + mp->m_qflags &= ~XFS_UQUOTA_ENFD; + } else if (!strcmp(this_char, MNTOPT_PQUOTA) || + !strcmp(this_char, MNTOPT_PRJQUOTA)) { + mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | + XFS_OQUOTA_ENFD); + } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { + mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); + mp->m_qflags &= ~XFS_OQUOTA_ENFD; + } else if (!strcmp(this_char, MNTOPT_GQUOTA) || + !strcmp(this_char, MNTOPT_GRPQUOTA)) { + mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | + XFS_OQUOTA_ENFD); + } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { + mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); + mp->m_qflags &= ~XFS_OQUOTA_ENFD; + } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { + mp->m_flags |= XFS_MOUNT_DELAYLOG; + } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { + mp->m_flags &= ~XFS_MOUNT_DELAYLOG; + } else if (!strcmp(this_char, MNTOPT_DISCARD)) { + mp->m_flags |= XFS_MOUNT_DISCARD; + } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { + mp->m_flags &= ~XFS_MOUNT_DISCARD; + } else if (!strcmp(this_char, "ihashsize")) { + xfs_warn(mp, + "ihashsize no longer used, option is deprecated."); + } else if (!strcmp(this_char, "osyncisdsync")) { + xfs_warn(mp, + "osyncisdsync has no effect, option is deprecated."); + } else if (!strcmp(this_char, "osyncisosync")) { + xfs_warn(mp, + "osyncisosync has no effect, option is deprecated."); + } else if (!strcmp(this_char, "irixsgid")) { + xfs_warn(mp, + "irixsgid is now a sysctl(2) variable, option is deprecated."); + } else { + xfs_warn(mp, "unknown mount option [%s].", this_char); + return EINVAL; + } + } + + /* + * no recovery flag requires a read-only mount + */ + if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && + !(mp->m_flags & XFS_MOUNT_RDONLY)) { + xfs_warn(mp, "no-recovery mounts must be read-only."); + return EINVAL; + } + + if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { + xfs_warn(mp, + "sunit and swidth options incompatible with the noalign option"); + return EINVAL; + } + + if ((mp->m_flags & XFS_MOUNT_DISCARD) && + !(mp->m_flags & XFS_MOUNT_DELAYLOG)) { + xfs_warn(mp, + "the discard option is incompatible with the nodelaylog option"); + return EINVAL; + } + +#ifndef CONFIG_XFS_QUOTA + if (XFS_IS_QUOTA_RUNNING(mp)) { + xfs_warn(mp, "quota support not available in this kernel."); + return EINVAL; + } +#endif + + if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && + (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { + xfs_warn(mp, "cannot mount with both project and group quota"); + return EINVAL; + } + + if ((dsunit && !dswidth) || (!dsunit && dswidth)) { + xfs_warn(mp, "sunit and swidth must be specified together"); + return EINVAL; + } + + if (dsunit && (dswidth % dsunit != 0)) { + xfs_warn(mp, + "stripe width (%d) must be a multiple of the stripe unit (%d)", + dswidth, dsunit); + return EINVAL; + } + +done: + if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { + /* + * At this point the superblock has not been read + * in, therefore we do not know the block size. + * Before the mount call ends we will convert + * these to FSBs. + */ + if (dsunit) { + mp->m_dalign = dsunit; + mp->m_flags |= XFS_MOUNT_RETERR; + } + + if (dswidth) + mp->m_swidth = dswidth; + } + + if (mp->m_logbufs != -1 && + mp->m_logbufs != 0 && + (mp->m_logbufs < XLOG_MIN_ICLOGS || + mp->m_logbufs > XLOG_MAX_ICLOGS)) { + xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", + mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); + return XFS_ERROR(EINVAL); + } + if (mp->m_logbsize != -1 && + mp->m_logbsize != 0 && + (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || + mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || + !is_power_of_2(mp->m_logbsize))) { + xfs_warn(mp, + "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", + mp->m_logbsize); + return XFS_ERROR(EINVAL); + } + + if (iosizelog) { + if (iosizelog > XFS_MAX_IO_LOG || + iosizelog < XFS_MIN_IO_LOG) { + xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", + iosizelog, XFS_MIN_IO_LOG, + XFS_MAX_IO_LOG); + return XFS_ERROR(EINVAL); + } + + mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; + mp->m_readio_log = iosizelog; + mp->m_writeio_log = iosizelog; + } + + return 0; +} + +struct proc_xfs_info { + int flag; + char *str; +}; + +STATIC int +xfs_showargs( + struct xfs_mount *mp, + struct seq_file *m) +{ + static struct proc_xfs_info xfs_info_set[] = { + /* the few simple ones we can get from the mount struct */ + { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, + { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, + { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, + { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, + { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, + { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, + { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, + { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, + { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, + { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, + { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, + { 0, NULL } + }; + static struct proc_xfs_info xfs_info_unset[] = { + /* the few simple ones we can get from the mount struct */ + { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, + { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, + { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, + { 0, NULL } + }; + struct proc_xfs_info *xfs_infop; + + for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { + if (mp->m_flags & xfs_infop->flag) + seq_puts(m, xfs_infop->str); + } + for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { + if (!(mp->m_flags & xfs_infop->flag)) + seq_puts(m, xfs_infop->str); + } + + if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) + seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", + (int)(1 << mp->m_writeio_log) >> 10); + + if (mp->m_logbufs > 0) + seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); + if (mp->m_logbsize > 0) + seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); + + if (mp->m_logname) + seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); + if (mp->m_rtname) + seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); + + if (mp->m_dalign > 0) + seq_printf(m, "," MNTOPT_SUNIT "=%d", + (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); + if (mp->m_swidth > 0) + seq_printf(m, "," MNTOPT_SWIDTH "=%d", + (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); + + if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) + seq_puts(m, "," MNTOPT_USRQUOTA); + else if (mp->m_qflags & XFS_UQUOTA_ACCT) + seq_puts(m, "," MNTOPT_UQUOTANOENF); + + /* Either project or group quotas can be active, not both */ + + if (mp->m_qflags & XFS_PQUOTA_ACCT) { + if (mp->m_qflags & XFS_OQUOTA_ENFD) + seq_puts(m, "," MNTOPT_PRJQUOTA); + else + seq_puts(m, "," MNTOPT_PQUOTANOENF); + } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { + if (mp->m_qflags & XFS_OQUOTA_ENFD) + seq_puts(m, "," MNTOPT_GRPQUOTA); + else + seq_puts(m, "," MNTOPT_GQUOTANOENF); + } + + if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) + seq_puts(m, "," MNTOPT_NOQUOTA); + + return 0; +} +__uint64_t +xfs_max_file_offset( + unsigned int blockshift) +{ + unsigned int pagefactor = 1; + unsigned int bitshift = BITS_PER_LONG - 1; + + /* Figure out maximum filesize, on Linux this can depend on + * the filesystem blocksize (on 32 bit platforms). + * __block_write_begin does this in an [unsigned] long... + * page->index << (PAGE_CACHE_SHIFT - bbits) + * So, for page sized blocks (4K on 32 bit platforms), + * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is + * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) + * but for smaller blocksizes it is less (bbits = log2 bsize). + * Note1: get_block_t takes a long (implicit cast from above) + * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch + * can optionally convert the [unsigned] long from above into + * an [unsigned] long long. + */ + +#if BITS_PER_LONG == 32 +# if defined(CONFIG_LBDAF) + ASSERT(sizeof(sector_t) == 8); + pagefactor = PAGE_CACHE_SIZE; + bitshift = BITS_PER_LONG; +# else + pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); +# endif +#endif + + return (((__uint64_t)pagefactor) << bitshift) - 1; +} + +STATIC int +xfs_blkdev_get( + xfs_mount_t *mp, + const char *name, + struct block_device **bdevp) +{ + int error = 0; + + *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, + mp); + if (IS_ERR(*bdevp)) { + error = PTR_ERR(*bdevp); + xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); + } + + return -error; +} + +STATIC void +xfs_blkdev_put( + struct block_device *bdev) +{ + if (bdev) + blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); +} + +void +xfs_blkdev_issue_flush( + xfs_buftarg_t *buftarg) +{ + blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL); +} + +STATIC void +xfs_close_devices( + struct xfs_mount *mp) +{ + if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { + struct block_device *logdev = mp->m_logdev_targp->bt_bdev; + xfs_free_buftarg(mp, mp->m_logdev_targp); + xfs_blkdev_put(logdev); + } + if (mp->m_rtdev_targp) { + struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; + xfs_free_buftarg(mp, mp->m_rtdev_targp); + xfs_blkdev_put(rtdev); + } + xfs_free_buftarg(mp, mp->m_ddev_targp); +} + +/* + * The file system configurations are: + * (1) device (partition) with data and internal log + * (2) logical volume with data and log subvolumes. + * (3) logical volume with data, log, and realtime subvolumes. + * + * We only have to handle opening the log and realtime volumes here if + * they are present. The data subvolume has already been opened by + * get_sb_bdev() and is stored in sb->s_bdev. + */ +STATIC int +xfs_open_devices( + struct xfs_mount *mp) +{ + struct block_device *ddev = mp->m_super->s_bdev; + struct block_device *logdev = NULL, *rtdev = NULL; + int error; + + /* + * Open real time and log devices - order is important. + */ + if (mp->m_logname) { + error = xfs_blkdev_get(mp, mp->m_logname, &logdev); + if (error) + goto out; + } + + if (mp->m_rtname) { + error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); + if (error) + goto out_close_logdev; + + if (rtdev == ddev || rtdev == logdev) { + xfs_warn(mp, + "Cannot mount filesystem with identical rtdev and ddev/logdev."); + error = EINVAL; + goto out_close_rtdev; + } + } + + /* + * Setup xfs_mount buffer target pointers + */ + error = ENOMEM; + mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); + if (!mp->m_ddev_targp) + goto out_close_rtdev; + + if (rtdev) { + mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, + mp->m_fsname); + if (!mp->m_rtdev_targp) + goto out_free_ddev_targ; + } + + if (logdev && logdev != ddev) { + mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, + mp->m_fsname); + if (!mp->m_logdev_targp) + goto out_free_rtdev_targ; + } else { + mp->m_logdev_targp = mp->m_ddev_targp; + } + + return 0; + + out_free_rtdev_targ: + if (mp->m_rtdev_targp) + xfs_free_buftarg(mp, mp->m_rtdev_targp); + out_free_ddev_targ: + xfs_free_buftarg(mp, mp->m_ddev_targp); + out_close_rtdev: + if (rtdev) + xfs_blkdev_put(rtdev); + out_close_logdev: + if (logdev && logdev != ddev) + xfs_blkdev_put(logdev); + out: + return error; +} + +/* + * Setup xfs_mount buffer target pointers based on superblock + */ +STATIC int +xfs_setup_devices( + struct xfs_mount *mp) +{ + int error; + + error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, + mp->m_sb.sb_sectsize); + if (error) + return error; + + if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { + unsigned int log_sector_size = BBSIZE; + + if (xfs_sb_version_hassector(&mp->m_sb)) + log_sector_size = mp->m_sb.sb_logsectsize; + error = xfs_setsize_buftarg(mp->m_logdev_targp, + mp->m_sb.sb_blocksize, + log_sector_size); + if (error) + return error; + } + if (mp->m_rtdev_targp) { + error = xfs_setsize_buftarg(mp->m_rtdev_targp, + mp->m_sb.sb_blocksize, + mp->m_sb.sb_sectsize); + if (error) + return error; + } + + return 0; +} + +/* Catch misguided souls that try to use this interface on XFS */ +STATIC struct inode * +xfs_fs_alloc_inode( + struct super_block *sb) +{ + BUG(); + return NULL; +} + +/* + * Now that the generic code is guaranteed not to be accessing + * the linux inode, we can reclaim the inode. + */ +STATIC void +xfs_fs_destroy_inode( + struct inode *inode) +{ + struct xfs_inode *ip = XFS_I(inode); + + trace_xfs_destroy_inode(ip); + + XFS_STATS_INC(vn_reclaim); + + /* bad inode, get out here ASAP */ + if (is_bad_inode(inode)) + goto out_reclaim; + + xfs_ioend_wait(ip); + + ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); + + /* + * We should never get here with one of the reclaim flags already set. + */ + ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); + ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); + + /* + * We always use background reclaim here because even if the + * inode is clean, it still may be under IO and hence we have + * to take the flush lock. The background reclaim path handles + * this more efficiently than we can here, so simply let background + * reclaim tear down all inodes. + */ +out_reclaim: + xfs_inode_set_reclaim_tag(ip); +} + +/* + * Slab object creation initialisation for the XFS inode. + * This covers only the idempotent fields in the XFS inode; + * all other fields need to be initialised on allocation + * from the slab. This avoids the need to repeatedly initialise + * fields in the xfs inode that left in the initialise state + * when freeing the inode. + */ +STATIC void +xfs_fs_inode_init_once( + void *inode) +{ + struct xfs_inode *ip = inode; + + memset(ip, 0, sizeof(struct xfs_inode)); + + /* vfs inode */ + inode_init_once(VFS_I(ip)); + + /* xfs inode */ + atomic_set(&ip->i_iocount, 0); + atomic_set(&ip->i_pincount, 0); + spin_lock_init(&ip->i_flags_lock); + init_waitqueue_head(&ip->i_ipin_wait); + /* + * Because we want to use a counting completion, complete + * the flush completion once to allow a single access to + * the flush completion without blocking. + */ + init_completion(&ip->i_flush); + complete(&ip->i_flush); + + mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, + "xfsino", ip->i_ino); +} + +/* + * Dirty the XFS inode when mark_inode_dirty_sync() is called so that + * we catch unlogged VFS level updates to the inode. + * + * We need the barrier() to maintain correct ordering between unlogged + * updates and the transaction commit code that clears the i_update_core + * field. This requires all updates to be completed before marking the + * inode dirty. + */ +STATIC void +xfs_fs_dirty_inode( + struct inode *inode, + int flags) +{ + barrier(); + XFS_I(inode)->i_update_core = 1; +} + +STATIC int +xfs_log_inode( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + int error; + + xfs_iunlock(ip, XFS_ILOCK_SHARED); + tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); + error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); + + if (error) { + xfs_trans_cancel(tp, 0); + /* we need to return with the lock hold shared */ + xfs_ilock(ip, XFS_ILOCK_SHARED); + return error; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + + /* + * Note - it's possible that we might have pushed ourselves out of the + * way during trans_reserve which would flush the inode. But there's + * no guarantee that the inode buffer has actually gone out yet (it's + * delwri). Plus the buffer could be pinned anyway if it's part of + * an inode in another recent transaction. So we play it safe and + * fire off the transaction anyway. + */ + xfs_trans_ijoin(tp, ip); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + error = xfs_trans_commit(tp, 0); + xfs_ilock_demote(ip, XFS_ILOCK_EXCL); + + return error; +} + +STATIC int +xfs_fs_write_inode( + struct inode *inode, + struct writeback_control *wbc) +{ + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + int error = EAGAIN; + + trace_xfs_write_inode(ip); + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + if (wbc->sync_mode == WB_SYNC_ALL) { + /* + * Make sure the inode has made it it into the log. Instead + * of forcing it all the way to stable storage using a + * synchronous transaction we let the log force inside the + * ->sync_fs call do that for thus, which reduces the number + * of synchronous log foces dramatically. + */ + xfs_ioend_wait(ip); + xfs_ilock(ip, XFS_ILOCK_SHARED); + if (ip->i_update_core) { + error = xfs_log_inode(ip); + if (error) + goto out_unlock; + } + } else { + /* + * We make this non-blocking if the inode is contended, return + * EAGAIN to indicate to the caller that they did not succeed. + * This prevents the flush path from blocking on inodes inside + * another operation right now, they get caught later by + * xfs_sync. + */ + if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) + goto out; + + if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) + goto out_unlock; + + /* + * Now we have the flush lock and the inode is not pinned, we + * can check if the inode is really clean as we know that + * there are no pending transaction completions, it is not + * waiting on the delayed write queue and there is no IO in + * progress. + */ + if (xfs_inode_clean(ip)) { + xfs_ifunlock(ip); + error = 0; + goto out_unlock; + } + error = xfs_iflush(ip, SYNC_TRYLOCK); + } + + out_unlock: + xfs_iunlock(ip, XFS_ILOCK_SHARED); + out: + /* + * if we failed to write out the inode then mark + * it dirty again so we'll try again later. + */ + if (error) + xfs_mark_inode_dirty_sync(ip); + return -error; +} + +STATIC void +xfs_fs_evict_inode( + struct inode *inode) +{ + xfs_inode_t *ip = XFS_I(inode); + + trace_xfs_evict_inode(ip); + + truncate_inode_pages(&inode->i_data, 0); + end_writeback(inode); + XFS_STATS_INC(vn_rele); + XFS_STATS_INC(vn_remove); + XFS_STATS_DEC(vn_active); + + /* + * The iolock is used by the file system to coordinate reads, + * writes, and block truncates. Up to this point the lock + * protected concurrent accesses by users of the inode. But + * from here forward we're doing some final processing of the + * inode because we're done with it, and although we reuse the + * iolock for protection it is really a distinct lock class + * (in the lockdep sense) from before. To keep lockdep happy + * (and basically indicate what we are doing), we explicitly + * re-init the iolock here. + */ + ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); + mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); + lockdep_set_class_and_name(&ip->i_iolock.mr_lock, + &xfs_iolock_reclaimable, "xfs_iolock_reclaimable"); + + xfs_inactive(ip); +} + +STATIC void +xfs_free_fsname( + struct xfs_mount *mp) +{ + kfree(mp->m_fsname); + kfree(mp->m_rtname); + kfree(mp->m_logname); +} + +STATIC void +xfs_fs_put_super( + struct super_block *sb) +{ + struct xfs_mount *mp = XFS_M(sb); + + xfs_syncd_stop(mp); + + /* + * Blow away any referenced inode in the filestreams cache. + * This can and will cause log traffic as inodes go inactive + * here. + */ + xfs_filestream_unmount(mp); + + XFS_bflush(mp->m_ddev_targp); + + xfs_unmountfs(mp); + xfs_freesb(mp); + xfs_icsb_destroy_counters(mp); + xfs_close_devices(mp); + xfs_free_fsname(mp); + kfree(mp); +} + +STATIC int +xfs_fs_sync_fs( + struct super_block *sb, + int wait) +{ + struct xfs_mount *mp = XFS_M(sb); + int error; + + /* + * Not much we can do for the first async pass. Writing out the + * superblock would be counter-productive as we are going to redirty + * when writing out other data and metadata (and writing out a single + * block is quite fast anyway). + * + * Try to asynchronously kick off quota syncing at least. + */ + if (!wait) { + xfs_qm_sync(mp, SYNC_TRYLOCK); + return 0; + } + + error = xfs_quiesce_data(mp); + if (error) + return -error; + + if (laptop_mode) { + /* + * The disk must be active because we're syncing. + * We schedule xfssyncd now (now that the disk is + * active) instead of later (when it might not be). + */ + flush_delayed_work_sync(&mp->m_sync_work); + } + + return 0; +} + +STATIC int +xfs_fs_statfs( + struct dentry *dentry, + struct kstatfs *statp) +{ + struct xfs_mount *mp = XFS_M(dentry->d_sb); + xfs_sb_t *sbp = &mp->m_sb; + struct xfs_inode *ip = XFS_I(dentry->d_inode); + __uint64_t fakeinos, id; + xfs_extlen_t lsize; + __int64_t ffree; + + statp->f_type = XFS_SB_MAGIC; + statp->f_namelen = MAXNAMELEN - 1; + + id = huge_encode_dev(mp->m_ddev_targp->bt_dev); + statp->f_fsid.val[0] = (u32)id; + statp->f_fsid.val[1] = (u32)(id >> 32); + + xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); + + spin_lock(&mp->m_sb_lock); + statp->f_bsize = sbp->sb_blocksize; + lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; + statp->f_blocks = sbp->sb_dblocks - lsize; + statp->f_bfree = statp->f_bavail = + sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); + fakeinos = statp->f_bfree << sbp->sb_inopblog; + statp->f_files = + MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); + if (mp->m_maxicount) + statp->f_files = min_t(typeof(statp->f_files), + statp->f_files, + mp->m_maxicount); + + /* make sure statp->f_ffree does not underflow */ + ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); + statp->f_ffree = max_t(__int64_t, ffree, 0); + + spin_unlock(&mp->m_sb_lock); + + if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || + ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == + (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) + xfs_qm_statvfs(ip, statp); + return 0; +} + +STATIC void +xfs_save_resvblks(struct xfs_mount *mp) +{ + __uint64_t resblks = 0; + + mp->m_resblks_save = mp->m_resblks; + xfs_reserve_blocks(mp, &resblks, NULL); +} + +STATIC void +xfs_restore_resvblks(struct xfs_mount *mp) +{ + __uint64_t resblks; + + if (mp->m_resblks_save) { + resblks = mp->m_resblks_save; + mp->m_resblks_save = 0; + } else + resblks = xfs_default_resblks(mp); + + xfs_reserve_blocks(mp, &resblks, NULL); +} + +STATIC int +xfs_fs_remount( + struct super_block *sb, + int *flags, + char *options) +{ + struct xfs_mount *mp = XFS_M(sb); + substring_t args[MAX_OPT_ARGS]; + char *p; + int error; + + while ((p = strsep(&options, ",")) != NULL) { + int token; + + if (!*p) + continue; + + token = match_token(p, tokens, args); + switch (token) { + case Opt_barrier: + mp->m_flags |= XFS_MOUNT_BARRIER; + break; + case Opt_nobarrier: + mp->m_flags &= ~XFS_MOUNT_BARRIER; + break; + default: + /* + * Logically we would return an error here to prevent + * users from believing they might have changed + * mount options using remount which can't be changed. + * + * But unfortunately mount(8) adds all options from + * mtab and fstab to the mount arguments in some cases + * so we can't blindly reject options, but have to + * check for each specified option if it actually + * differs from the currently set option and only + * reject it if that's the case. + * + * Until that is implemented we return success for + * every remount request, and silently ignore all + * options that we can't actually change. + */ +#if 0 + xfs_info(mp, + "mount option \"%s\" not supported for remount\n", p); + return -EINVAL; +#else + break; +#endif + } + } + + /* ro -> rw */ + if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { + mp->m_flags &= ~XFS_MOUNT_RDONLY; + + /* + * If this is the first remount to writeable state we + * might have some superblock changes to update. + */ + if (mp->m_update_flags) { + error = xfs_mount_log_sb(mp, mp->m_update_flags); + if (error) { + xfs_warn(mp, "failed to write sb changes"); + return error; + } + mp->m_update_flags = 0; + } + + /* + * Fill out the reserve pool if it is empty. Use the stashed + * value if it is non-zero, otherwise go with the default. + */ + xfs_restore_resvblks(mp); + } + + /* rw -> ro */ + if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { + /* + * After we have synced the data but before we sync the + * metadata, we need to free up the reserve block pool so that + * the used block count in the superblock on disk is correct at + * the end of the remount. Stash the current reserve pool size + * so that if we get remounted rw, we can return it to the same + * size. + */ + + xfs_quiesce_data(mp); + xfs_save_resvblks(mp); + xfs_quiesce_attr(mp); + mp->m_flags |= XFS_MOUNT_RDONLY; + } + + return 0; +} + +/* + * Second stage of a freeze. The data is already frozen so we only + * need to take care of the metadata. Once that's done write a dummy + * record to dirty the log in case of a crash while frozen. + */ +STATIC int +xfs_fs_freeze( + struct super_block *sb) +{ + struct xfs_mount *mp = XFS_M(sb); + + xfs_save_resvblks(mp); + xfs_quiesce_attr(mp); + return -xfs_fs_log_dummy(mp); +} + +STATIC int +xfs_fs_unfreeze( + struct super_block *sb) +{ + struct xfs_mount *mp = XFS_M(sb); + + xfs_restore_resvblks(mp); + return 0; +} + +STATIC int +xfs_fs_show_options( + struct seq_file *m, + struct vfsmount *mnt) +{ + return -xfs_showargs(XFS_M(mnt->mnt_sb), m); +} + +/* + * This function fills in xfs_mount_t fields based on mount args. + * Note: the superblock _has_ now been read in. + */ +STATIC int +xfs_finish_flags( + struct xfs_mount *mp) +{ + int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); + + /* Fail a mount where the logbuf is smaller than the log stripe */ + if (xfs_sb_version_haslogv2(&mp->m_sb)) { + if (mp->m_logbsize <= 0 && + mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { + mp->m_logbsize = mp->m_sb.sb_logsunit; + } else if (mp->m_logbsize > 0 && + mp->m_logbsize < mp->m_sb.sb_logsunit) { + xfs_warn(mp, + "logbuf size must be greater than or equal to log stripe size"); + return XFS_ERROR(EINVAL); + } + } else { + /* Fail a mount if the logbuf is larger than 32K */ + if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { + xfs_warn(mp, + "logbuf size for version 1 logs must be 16K or 32K"); + return XFS_ERROR(EINVAL); + } + } + + /* + * mkfs'ed attr2 will turn on attr2 mount unless explicitly + * told by noattr2 to turn it off + */ + if (xfs_sb_version_hasattr2(&mp->m_sb) && + !(mp->m_flags & XFS_MOUNT_NOATTR2)) + mp->m_flags |= XFS_MOUNT_ATTR2; + + /* + * prohibit r/w mounts of read-only filesystems + */ + if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { + xfs_warn(mp, + "cannot mount a read-only filesystem as read-write"); + return XFS_ERROR(EROFS); + } + + return 0; +} + +STATIC int +xfs_fs_fill_super( + struct super_block *sb, + void *data, + int silent) +{ + struct inode *root; + struct xfs_mount *mp = NULL; + int flags = 0, error = ENOMEM; + + mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); + if (!mp) + goto out; + + spin_lock_init(&mp->m_sb_lock); + mutex_init(&mp->m_growlock); + atomic_set(&mp->m_active_trans, 0); + + mp->m_super = sb; + sb->s_fs_info = mp; + + error = xfs_parseargs(mp, (char *)data); + if (error) + goto out_free_fsname; + + sb_min_blocksize(sb, BBSIZE); + sb->s_xattr = xfs_xattr_handlers; + sb->s_export_op = &xfs_export_operations; +#ifdef CONFIG_XFS_QUOTA + sb->s_qcop = &xfs_quotactl_operations; +#endif + sb->s_op = &xfs_super_operations; + + if (silent) + flags |= XFS_MFSI_QUIET; + + error = xfs_open_devices(mp); + if (error) + goto out_free_fsname; + + error = xfs_icsb_init_counters(mp); + if (error) + goto out_close_devices; + + error = xfs_readsb(mp, flags); + if (error) + goto out_destroy_counters; + + error = xfs_finish_flags(mp); + if (error) + goto out_free_sb; + + error = xfs_setup_devices(mp); + if (error) + goto out_free_sb; + + error = xfs_filestream_mount(mp); + if (error) + goto out_free_sb; + + /* + * we must configure the block size in the superblock before we run the + * full mount process as the mount process can lookup and cache inodes. + * For the same reason we must also initialise the syncd and register + * the inode cache shrinker so that inodes can be reclaimed during + * operations like a quotacheck that iterate all inodes in the + * filesystem. + */ + sb->s_magic = XFS_SB_MAGIC; + sb->s_blocksize = mp->m_sb.sb_blocksize; + sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; + sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); + sb->s_time_gran = 1; + set_posix_acl_flag(sb); + + error = xfs_mountfs(mp); + if (error) + goto out_filestream_unmount; + + error = xfs_syncd_init(mp); + if (error) + goto out_unmount; + + root = igrab(VFS_I(mp->m_rootip)); + if (!root) { + error = ENOENT; + goto out_syncd_stop; + } + if (is_bad_inode(root)) { + error = EINVAL; + goto out_syncd_stop; + } + sb->s_root = d_alloc_root(root); + if (!sb->s_root) { + error = ENOMEM; + goto out_iput; + } + + return 0; + + out_filestream_unmount: + xfs_filestream_unmount(mp); + out_free_sb: + xfs_freesb(mp); + out_destroy_counters: + xfs_icsb_destroy_counters(mp); + out_close_devices: + xfs_close_devices(mp); + out_free_fsname: + xfs_free_fsname(mp); + kfree(mp); + out: + return -error; + + out_iput: + iput(root); + out_syncd_stop: + xfs_syncd_stop(mp); + out_unmount: + /* + * Blow away any referenced inode in the filestreams cache. + * This can and will cause log traffic as inodes go inactive + * here. + */ + xfs_filestream_unmount(mp); + + XFS_bflush(mp->m_ddev_targp); + + xfs_unmountfs(mp); + goto out_free_sb; +} + +STATIC struct dentry * +xfs_fs_mount( + struct file_system_type *fs_type, + int flags, + const char *dev_name, + void *data) +{ + return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); +} + +static int +xfs_fs_nr_cached_objects( + struct super_block *sb) +{ + return xfs_reclaim_inodes_count(XFS_M(sb)); +} + +static void +xfs_fs_free_cached_objects( + struct super_block *sb, + int nr_to_scan) +{ + xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); +} + +static const struct super_operations xfs_super_operations = { + .alloc_inode = xfs_fs_alloc_inode, + .destroy_inode = xfs_fs_destroy_inode, + .dirty_inode = xfs_fs_dirty_inode, + .write_inode = xfs_fs_write_inode, + .evict_inode = xfs_fs_evict_inode, + .put_super = xfs_fs_put_super, + .sync_fs = xfs_fs_sync_fs, + .freeze_fs = xfs_fs_freeze, + .unfreeze_fs = xfs_fs_unfreeze, + .statfs = xfs_fs_statfs, + .remount_fs = xfs_fs_remount, + .show_options = xfs_fs_show_options, + .nr_cached_objects = xfs_fs_nr_cached_objects, + .free_cached_objects = xfs_fs_free_cached_objects, +}; + +static struct file_system_type xfs_fs_type = { + .owner = THIS_MODULE, + .name = "xfs", + .mount = xfs_fs_mount, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV, +}; + +STATIC int __init +xfs_init_zones(void) +{ + + xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); + if (!xfs_ioend_zone) + goto out; + + xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, + xfs_ioend_zone); + if (!xfs_ioend_pool) + goto out_destroy_ioend_zone; + + xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), + "xfs_log_ticket"); + if (!xfs_log_ticket_zone) + goto out_destroy_ioend_pool; + + xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), + "xfs_bmap_free_item"); + if (!xfs_bmap_free_item_zone) + goto out_destroy_log_ticket_zone; + + xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), + "xfs_btree_cur"); + if (!xfs_btree_cur_zone) + goto out_destroy_bmap_free_item_zone; + + xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), + "xfs_da_state"); + if (!xfs_da_state_zone) + goto out_destroy_btree_cur_zone; + + xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); + if (!xfs_dabuf_zone) + goto out_destroy_da_state_zone; + + xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); + if (!xfs_ifork_zone) + goto out_destroy_dabuf_zone; + + xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); + if (!xfs_trans_zone) + goto out_destroy_ifork_zone; + + xfs_log_item_desc_zone = + kmem_zone_init(sizeof(struct xfs_log_item_desc), + "xfs_log_item_desc"); + if (!xfs_log_item_desc_zone) + goto out_destroy_trans_zone; + + /* + * The size of the zone allocated buf log item is the maximum + * size possible under XFS. This wastes a little bit of memory, + * but it is much faster. + */ + xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + + (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / + NBWORD) * sizeof(int))), "xfs_buf_item"); + if (!xfs_buf_item_zone) + goto out_destroy_log_item_desc_zone; + + xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + + ((XFS_EFD_MAX_FAST_EXTENTS - 1) * + sizeof(xfs_extent_t))), "xfs_efd_item"); + if (!xfs_efd_zone) + goto out_destroy_buf_item_zone; + + xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + + ((XFS_EFI_MAX_FAST_EXTENTS - 1) * + sizeof(xfs_extent_t))), "xfs_efi_item"); + if (!xfs_efi_zone) + goto out_destroy_efd_zone; + + xfs_inode_zone = + kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", + KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, + xfs_fs_inode_init_once); + if (!xfs_inode_zone) + goto out_destroy_efi_zone; + + xfs_ili_zone = + kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", + KM_ZONE_SPREAD, NULL); + if (!xfs_ili_zone) + goto out_destroy_inode_zone; + + return 0; + + out_destroy_inode_zone: + kmem_zone_destroy(xfs_inode_zone); + out_destroy_efi_zone: + kmem_zone_destroy(xfs_efi_zone); + out_destroy_efd_zone: + kmem_zone_destroy(xfs_efd_zone); + out_destroy_buf_item_zone: + kmem_zone_destroy(xfs_buf_item_zone); + out_destroy_log_item_desc_zone: + kmem_zone_destroy(xfs_log_item_desc_zone); + out_destroy_trans_zone: + kmem_zone_destroy(xfs_trans_zone); + out_destroy_ifork_zone: + kmem_zone_destroy(xfs_ifork_zone); + out_destroy_dabuf_zone: + kmem_zone_destroy(xfs_dabuf_zone); + out_destroy_da_state_zone: + kmem_zone_destroy(xfs_da_state_zone); + out_destroy_btree_cur_zone: + kmem_zone_destroy(xfs_btree_cur_zone); + out_destroy_bmap_free_item_zone: + kmem_zone_destroy(xfs_bmap_free_item_zone); + out_destroy_log_ticket_zone: + kmem_zone_destroy(xfs_log_ticket_zone); + out_destroy_ioend_pool: + mempool_destroy(xfs_ioend_pool); + out_destroy_ioend_zone: + kmem_zone_destroy(xfs_ioend_zone); + out: + return -ENOMEM; +} + +STATIC void +xfs_destroy_zones(void) +{ + kmem_zone_destroy(xfs_ili_zone); + kmem_zone_destroy(xfs_inode_zone); + kmem_zone_destroy(xfs_efi_zone); + kmem_zone_destroy(xfs_efd_zone); + kmem_zone_destroy(xfs_buf_item_zone); + kmem_zone_destroy(xfs_log_item_desc_zone); + kmem_zone_destroy(xfs_trans_zone); + kmem_zone_destroy(xfs_ifork_zone); + kmem_zone_destroy(xfs_dabuf_zone); + kmem_zone_destroy(xfs_da_state_zone); + kmem_zone_destroy(xfs_btree_cur_zone); + kmem_zone_destroy(xfs_bmap_free_item_zone); + kmem_zone_destroy(xfs_log_ticket_zone); + mempool_destroy(xfs_ioend_pool); + kmem_zone_destroy(xfs_ioend_zone); + +} + +STATIC int __init +xfs_init_workqueues(void) +{ + /* + * max_active is set to 8 to give enough concurency to allow + * multiple work operations on each CPU to run. This allows multiple + * filesystems to be running sync work concurrently, and scales with + * the number of CPUs in the system. + */ + xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_CPU_INTENSIVE, 8); + if (!xfs_syncd_wq) + goto out; + + xfs_ail_wq = alloc_workqueue("xfsail", WQ_CPU_INTENSIVE, 8); + if (!xfs_ail_wq) + goto out_destroy_syncd; + + return 0; + +out_destroy_syncd: + destroy_workqueue(xfs_syncd_wq); +out: + return -ENOMEM; +} + +STATIC void +xfs_destroy_workqueues(void) +{ + destroy_workqueue(xfs_ail_wq); + destroy_workqueue(xfs_syncd_wq); +} + +STATIC int __init +init_xfs_fs(void) +{ + int error; + + printk(KERN_INFO XFS_VERSION_STRING " with " + XFS_BUILD_OPTIONS " enabled\n"); + + xfs_ioend_init(); + xfs_dir_startup(); + + error = xfs_init_zones(); + if (error) + goto out; + + error = xfs_init_workqueues(); + if (error) + goto out_destroy_zones; + + error = xfs_mru_cache_init(); + if (error) + goto out_destroy_wq; + + error = xfs_filestream_init(); + if (error) + goto out_mru_cache_uninit; + + error = xfs_buf_init(); + if (error) + goto out_filestream_uninit; + + error = xfs_init_procfs(); + if (error) + goto out_buf_terminate; + + error = xfs_sysctl_register(); + if (error) + goto out_cleanup_procfs; + + vfs_initquota(); + + error = register_filesystem(&xfs_fs_type); + if (error) + goto out_sysctl_unregister; + return 0; + + out_sysctl_unregister: + xfs_sysctl_unregister(); + out_cleanup_procfs: + xfs_cleanup_procfs(); + out_buf_terminate: + xfs_buf_terminate(); + out_filestream_uninit: + xfs_filestream_uninit(); + out_mru_cache_uninit: + xfs_mru_cache_uninit(); + out_destroy_wq: + xfs_destroy_workqueues(); + out_destroy_zones: + xfs_destroy_zones(); + out: + return error; +} + +STATIC void __exit +exit_xfs_fs(void) +{ + vfs_exitquota(); + unregister_filesystem(&xfs_fs_type); + xfs_sysctl_unregister(); + xfs_cleanup_procfs(); + xfs_buf_terminate(); + xfs_filestream_uninit(); + xfs_mru_cache_uninit(); + xfs_destroy_workqueues(); + xfs_destroy_zones(); +} + +module_init(init_xfs_fs); +module_exit(exit_xfs_fs); + +MODULE_AUTHOR("Silicon Graphics, Inc."); +MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); +MODULE_LICENSE("GPL"); diff --git a/fs/xfs/xfs_super.h b/fs/xfs/xfs_super.h new file mode 100644 index 000000000000..50a3266c999e --- /dev/null +++ b/fs/xfs/xfs_super.h @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_SUPER_H__ +#define __XFS_SUPER_H__ + +#include + +#ifdef CONFIG_XFS_QUOTA +extern void xfs_qm_init(void); +extern void xfs_qm_exit(void); +# define vfs_initquota() xfs_qm_init() +# define vfs_exitquota() xfs_qm_exit() +#else +# define vfs_initquota() do { } while (0) +# define vfs_exitquota() do { } while (0) +#endif + +#ifdef CONFIG_XFS_POSIX_ACL +# define XFS_ACL_STRING "ACLs, " +# define set_posix_acl_flag(sb) ((sb)->s_flags |= MS_POSIXACL) +#else +# define XFS_ACL_STRING +# define set_posix_acl_flag(sb) do { } while (0) +#endif + +#define XFS_SECURITY_STRING "security attributes, " + +#ifdef CONFIG_XFS_RT +# define XFS_REALTIME_STRING "realtime, " +#else +# define XFS_REALTIME_STRING +#endif + +#if XFS_BIG_BLKNOS +# if XFS_BIG_INUMS +# define XFS_BIGFS_STRING "large block/inode numbers, " +# else +# define XFS_BIGFS_STRING "large block numbers, " +# endif +#else +# define XFS_BIGFS_STRING +#endif + +#ifdef DEBUG +# define XFS_DBG_STRING "debug" +#else +# define XFS_DBG_STRING "no debug" +#endif + +#define XFS_VERSION_STRING "SGI XFS" +#define XFS_BUILD_OPTIONS XFS_ACL_STRING \ + XFS_SECURITY_STRING \ + XFS_REALTIME_STRING \ + XFS_BIGFS_STRING \ + XFS_DBG_STRING /* DBG must be last */ + +struct xfs_inode; +struct xfs_mount; +struct xfs_buftarg; +struct block_device; + +extern __uint64_t xfs_max_file_offset(unsigned int); + +extern void xfs_blkdev_issue_flush(struct xfs_buftarg *); + +extern const struct export_operations xfs_export_operations; +extern const struct xattr_handler *xfs_xattr_handlers[]; +extern const struct quotactl_ops xfs_quotactl_operations; + +#define XFS_M(sb) ((struct xfs_mount *)((sb)->s_fs_info)) + +#endif /* __XFS_SUPER_H__ */ diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c new file mode 100644 index 000000000000..4604f90f86a3 --- /dev/null +++ b/fs/xfs/xfs_sync.c @@ -0,0 +1,1065 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_types.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_trans_priv.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_dinode.h" +#include "xfs_error.h" +#include "xfs_filestream.h" +#include "xfs_vnodeops.h" +#include "xfs_inode_item.h" +#include "xfs_quota.h" +#include "xfs_trace.h" +#include "xfs_fsops.h" + +#include +#include + +struct workqueue_struct *xfs_syncd_wq; /* sync workqueue */ + +/* + * The inode lookup is done in batches to keep the amount of lock traffic and + * radix tree lookups to a minimum. The batch size is a trade off between + * lookup reduction and stack usage. This is in the reclaim path, so we can't + * be too greedy. + */ +#define XFS_LOOKUP_BATCH 32 + +STATIC int +xfs_inode_ag_walk_grab( + struct xfs_inode *ip) +{ + struct inode *inode = VFS_I(ip); + + ASSERT(rcu_read_lock_held()); + + /* + * check for stale RCU freed inode + * + * If the inode has been reallocated, it doesn't matter if it's not in + * the AG we are walking - we are walking for writeback, so if it + * passes all the "valid inode" checks and is dirty, then we'll write + * it back anyway. If it has been reallocated and still being + * initialised, the XFS_INEW check below will catch it. + */ + spin_lock(&ip->i_flags_lock); + if (!ip->i_ino) + goto out_unlock_noent; + + /* avoid new or reclaimable inodes. Leave for reclaim code to flush */ + if (__xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM)) + goto out_unlock_noent; + spin_unlock(&ip->i_flags_lock); + + /* nothing to sync during shutdown */ + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return EFSCORRUPTED; + + /* If we can't grab the inode, it must on it's way to reclaim. */ + if (!igrab(inode)) + return ENOENT; + + if (is_bad_inode(inode)) { + IRELE(ip); + return ENOENT; + } + + /* inode is valid */ + return 0; + +out_unlock_noent: + spin_unlock(&ip->i_flags_lock); + return ENOENT; +} + +STATIC int +xfs_inode_ag_walk( + struct xfs_mount *mp, + struct xfs_perag *pag, + int (*execute)(struct xfs_inode *ip, + struct xfs_perag *pag, int flags), + int flags) +{ + uint32_t first_index; + int last_error = 0; + int skipped; + int done; + int nr_found; + +restart: + done = 0; + skipped = 0; + first_index = 0; + nr_found = 0; + do { + struct xfs_inode *batch[XFS_LOOKUP_BATCH]; + int error = 0; + int i; + + rcu_read_lock(); + nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, + (void **)batch, first_index, + XFS_LOOKUP_BATCH); + if (!nr_found) { + rcu_read_unlock(); + break; + } + + /* + * Grab the inodes before we drop the lock. if we found + * nothing, nr == 0 and the loop will be skipped. + */ + for (i = 0; i < nr_found; i++) { + struct xfs_inode *ip = batch[i]; + + if (done || xfs_inode_ag_walk_grab(ip)) + batch[i] = NULL; + + /* + * Update the index for the next lookup. Catch + * overflows into the next AG range which can occur if + * we have inodes in the last block of the AG and we + * are currently pointing to the last inode. + * + * Because we may see inodes that are from the wrong AG + * due to RCU freeing and reallocation, only update the + * index if it lies in this AG. It was a race that lead + * us to see this inode, so another lookup from the + * same index will not find it again. + */ + if (XFS_INO_TO_AGNO(mp, ip->i_ino) != pag->pag_agno) + continue; + first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); + if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) + done = 1; + } + + /* unlock now we've grabbed the inodes. */ + rcu_read_unlock(); + + for (i = 0; i < nr_found; i++) { + if (!batch[i]) + continue; + error = execute(batch[i], pag, flags); + IRELE(batch[i]); + if (error == EAGAIN) { + skipped++; + continue; + } + if (error && last_error != EFSCORRUPTED) + last_error = error; + } + + /* bail out if the filesystem is corrupted. */ + if (error == EFSCORRUPTED) + break; + + cond_resched(); + + } while (nr_found && !done); + + if (skipped) { + delay(1); + goto restart; + } + return last_error; +} + +int +xfs_inode_ag_iterator( + struct xfs_mount *mp, + int (*execute)(struct xfs_inode *ip, + struct xfs_perag *pag, int flags), + int flags) +{ + struct xfs_perag *pag; + int error = 0; + int last_error = 0; + xfs_agnumber_t ag; + + ag = 0; + while ((pag = xfs_perag_get(mp, ag))) { + ag = pag->pag_agno + 1; + error = xfs_inode_ag_walk(mp, pag, execute, flags); + xfs_perag_put(pag); + if (error) { + last_error = error; + if (error == EFSCORRUPTED) + break; + } + } + return XFS_ERROR(last_error); +} + +STATIC int +xfs_sync_inode_data( + struct xfs_inode *ip, + struct xfs_perag *pag, + int flags) +{ + struct inode *inode = VFS_I(ip); + struct address_space *mapping = inode->i_mapping; + int error = 0; + + if (!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) + goto out_wait; + + if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED)) { + if (flags & SYNC_TRYLOCK) + goto out_wait; + xfs_ilock(ip, XFS_IOLOCK_SHARED); + } + + error = xfs_flush_pages(ip, 0, -1, (flags & SYNC_WAIT) ? + 0 : XBF_ASYNC, FI_NONE); + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + + out_wait: + if (flags & SYNC_WAIT) + xfs_ioend_wait(ip); + return error; +} + +STATIC int +xfs_sync_inode_attr( + struct xfs_inode *ip, + struct xfs_perag *pag, + int flags) +{ + int error = 0; + + xfs_ilock(ip, XFS_ILOCK_SHARED); + if (xfs_inode_clean(ip)) + goto out_unlock; + if (!xfs_iflock_nowait(ip)) { + if (!(flags & SYNC_WAIT)) + goto out_unlock; + xfs_iflock(ip); + } + + if (xfs_inode_clean(ip)) { + xfs_ifunlock(ip); + goto out_unlock; + } + + error = xfs_iflush(ip, flags); + + /* + * We don't want to try again on non-blocking flushes that can't run + * again immediately. If an inode really must be written, then that's + * what the SYNC_WAIT flag is for. + */ + if (error == EAGAIN) { + ASSERT(!(flags & SYNC_WAIT)); + error = 0; + } + + out_unlock: + xfs_iunlock(ip, XFS_ILOCK_SHARED); + return error; +} + +/* + * Write out pagecache data for the whole filesystem. + */ +STATIC int +xfs_sync_data( + struct xfs_mount *mp, + int flags) +{ + int error; + + ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0); + + error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags); + if (error) + return XFS_ERROR(error); + + xfs_log_force(mp, (flags & SYNC_WAIT) ? XFS_LOG_SYNC : 0); + return 0; +} + +/* + * Write out inode metadata (attributes) for the whole filesystem. + */ +STATIC int +xfs_sync_attr( + struct xfs_mount *mp, + int flags) +{ + ASSERT((flags & ~SYNC_WAIT) == 0); + + return xfs_inode_ag_iterator(mp, xfs_sync_inode_attr, flags); +} + +STATIC int +xfs_sync_fsdata( + struct xfs_mount *mp) +{ + struct xfs_buf *bp; + + /* + * If the buffer is pinned then push on the log so we won't get stuck + * waiting in the write for someone, maybe ourselves, to flush the log. + * + * Even though we just pushed the log above, we did not have the + * superblock buffer locked at that point so it can become pinned in + * between there and here. + */ + bp = xfs_getsb(mp, 0); + if (xfs_buf_ispinned(bp)) + xfs_log_force(mp, 0); + + return xfs_bwrite(mp, bp); +} + +/* + * When remounting a filesystem read-only or freezing the filesystem, we have + * two phases to execute. This first phase is syncing the data before we + * quiesce the filesystem, and the second is flushing all the inodes out after + * we've waited for all the transactions created by the first phase to + * complete. The second phase ensures that the inodes are written to their + * location on disk rather than just existing in transactions in the log. This + * means after a quiesce there is no log replay required to write the inodes to + * disk (this is the main difference between a sync and a quiesce). + */ +/* + * First stage of freeze - no writers will make progress now we are here, + * so we flush delwri and delalloc buffers here, then wait for all I/O to + * complete. Data is frozen at that point. Metadata is not frozen, + * transactions can still occur here so don't bother flushing the buftarg + * because it'll just get dirty again. + */ +int +xfs_quiesce_data( + struct xfs_mount *mp) +{ + int error, error2 = 0; + + xfs_qm_sync(mp, SYNC_TRYLOCK); + xfs_qm_sync(mp, SYNC_WAIT); + + /* force out the newly dirtied log buffers */ + xfs_log_force(mp, XFS_LOG_SYNC); + + /* write superblock and hoover up shutdown errors */ + error = xfs_sync_fsdata(mp); + + /* make sure all delwri buffers are written out */ + xfs_flush_buftarg(mp->m_ddev_targp, 1); + + /* mark the log as covered if needed */ + if (xfs_log_need_covered(mp)) + error2 = xfs_fs_log_dummy(mp); + + /* flush data-only devices */ + if (mp->m_rtdev_targp) + XFS_bflush(mp->m_rtdev_targp); + + return error ? error : error2; +} + +STATIC void +xfs_quiesce_fs( + struct xfs_mount *mp) +{ + int count = 0, pincount; + + xfs_reclaim_inodes(mp, 0); + xfs_flush_buftarg(mp->m_ddev_targp, 0); + + /* + * This loop must run at least twice. The first instance of the loop + * will flush most meta data but that will generate more meta data + * (typically directory updates). Which then must be flushed and + * logged before we can write the unmount record. We also so sync + * reclaim of inodes to catch any that the above delwri flush skipped. + */ + do { + xfs_reclaim_inodes(mp, SYNC_WAIT); + xfs_sync_attr(mp, SYNC_WAIT); + pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1); + if (!pincount) { + delay(50); + count++; + } + } while (count < 2); +} + +/* + * Second stage of a quiesce. The data is already synced, now we have to take + * care of the metadata. New transactions are already blocked, so we need to + * wait for any remaining transactions to drain out before proceeding. + */ +void +xfs_quiesce_attr( + struct xfs_mount *mp) +{ + int error = 0; + + /* wait for all modifications to complete */ + while (atomic_read(&mp->m_active_trans) > 0) + delay(100); + + /* flush inodes and push all remaining buffers out to disk */ + xfs_quiesce_fs(mp); + + /* + * Just warn here till VFS can correctly support + * read-only remount without racing. + */ + WARN_ON(atomic_read(&mp->m_active_trans) != 0); + + /* Push the superblock and write an unmount record */ + error = xfs_log_sbcount(mp); + if (error) + xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " + "Frozen image may not be consistent."); + xfs_log_unmount_write(mp); + xfs_unmountfs_writesb(mp); +} + +static void +xfs_syncd_queue_sync( + struct xfs_mount *mp) +{ + queue_delayed_work(xfs_syncd_wq, &mp->m_sync_work, + msecs_to_jiffies(xfs_syncd_centisecs * 10)); +} + +/* + * Every sync period we need to unpin all items, reclaim inodes and sync + * disk quotas. We might need to cover the log to indicate that the + * filesystem is idle and not frozen. + */ +STATIC void +xfs_sync_worker( + struct work_struct *work) +{ + struct xfs_mount *mp = container_of(to_delayed_work(work), + struct xfs_mount, m_sync_work); + int error; + + if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { + /* dgc: errors ignored here */ + if (mp->m_super->s_frozen == SB_UNFROZEN && + xfs_log_need_covered(mp)) + error = xfs_fs_log_dummy(mp); + else + xfs_log_force(mp, 0); + error = xfs_qm_sync(mp, SYNC_TRYLOCK); + + /* start pushing all the metadata that is currently dirty */ + xfs_ail_push_all(mp->m_ail); + } + + /* queue us up again */ + xfs_syncd_queue_sync(mp); +} + +/* + * Queue a new inode reclaim pass if there are reclaimable inodes and there + * isn't a reclaim pass already in progress. By default it runs every 5s based + * on the xfs syncd work default of 30s. Perhaps this should have it's own + * tunable, but that can be done if this method proves to be ineffective or too + * aggressive. + */ +static void +xfs_syncd_queue_reclaim( + struct xfs_mount *mp) +{ + + /* + * We can have inodes enter reclaim after we've shut down the syncd + * workqueue during unmount, so don't allow reclaim work to be queued + * during unmount. + */ + if (!(mp->m_super->s_flags & MS_ACTIVE)) + return; + + rcu_read_lock(); + if (radix_tree_tagged(&mp->m_perag_tree, XFS_ICI_RECLAIM_TAG)) { + queue_delayed_work(xfs_syncd_wq, &mp->m_reclaim_work, + msecs_to_jiffies(xfs_syncd_centisecs / 6 * 10)); + } + rcu_read_unlock(); +} + +/* + * This is a fast pass over the inode cache to try to get reclaim moving on as + * many inodes as possible in a short period of time. It kicks itself every few + * seconds, as well as being kicked by the inode cache shrinker when memory + * goes low. It scans as quickly as possible avoiding locked inodes or those + * already being flushed, and once done schedules a future pass. + */ +STATIC void +xfs_reclaim_worker( + struct work_struct *work) +{ + struct xfs_mount *mp = container_of(to_delayed_work(work), + struct xfs_mount, m_reclaim_work); + + xfs_reclaim_inodes(mp, SYNC_TRYLOCK); + xfs_syncd_queue_reclaim(mp); +} + +/* + * Flush delayed allocate data, attempting to free up reserved space + * from existing allocations. At this point a new allocation attempt + * has failed with ENOSPC and we are in the process of scratching our + * heads, looking about for more room. + * + * Queue a new data flush if there isn't one already in progress and + * wait for completion of the flush. This means that we only ever have one + * inode flush in progress no matter how many ENOSPC events are occurring and + * so will prevent the system from bogging down due to every concurrent + * ENOSPC event scanning all the active inodes in the system for writeback. + */ +void +xfs_flush_inodes( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + + queue_work(xfs_syncd_wq, &mp->m_flush_work); + flush_work_sync(&mp->m_flush_work); +} + +STATIC void +xfs_flush_worker( + struct work_struct *work) +{ + struct xfs_mount *mp = container_of(work, + struct xfs_mount, m_flush_work); + + xfs_sync_data(mp, SYNC_TRYLOCK); + xfs_sync_data(mp, SYNC_TRYLOCK | SYNC_WAIT); +} + +int +xfs_syncd_init( + struct xfs_mount *mp) +{ + INIT_WORK(&mp->m_flush_work, xfs_flush_worker); + INIT_DELAYED_WORK(&mp->m_sync_work, xfs_sync_worker); + INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); + + xfs_syncd_queue_sync(mp); + xfs_syncd_queue_reclaim(mp); + + return 0; +} + +void +xfs_syncd_stop( + struct xfs_mount *mp) +{ + cancel_delayed_work_sync(&mp->m_sync_work); + cancel_delayed_work_sync(&mp->m_reclaim_work); + cancel_work_sync(&mp->m_flush_work); +} + +void +__xfs_inode_set_reclaim_tag( + struct xfs_perag *pag, + struct xfs_inode *ip) +{ + radix_tree_tag_set(&pag->pag_ici_root, + XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino), + XFS_ICI_RECLAIM_TAG); + + if (!pag->pag_ici_reclaimable) { + /* propagate the reclaim tag up into the perag radix tree */ + spin_lock(&ip->i_mount->m_perag_lock); + radix_tree_tag_set(&ip->i_mount->m_perag_tree, + XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino), + XFS_ICI_RECLAIM_TAG); + spin_unlock(&ip->i_mount->m_perag_lock); + + /* schedule periodic background inode reclaim */ + xfs_syncd_queue_reclaim(ip->i_mount); + + trace_xfs_perag_set_reclaim(ip->i_mount, pag->pag_agno, + -1, _RET_IP_); + } + pag->pag_ici_reclaimable++; +} + +/* + * We set the inode flag atomically with the radix tree tag. + * Once we get tag lookups on the radix tree, this inode flag + * can go away. + */ +void +xfs_inode_set_reclaim_tag( + xfs_inode_t *ip) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_perag *pag; + + pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); + spin_lock(&pag->pag_ici_lock); + spin_lock(&ip->i_flags_lock); + __xfs_inode_set_reclaim_tag(pag, ip); + __xfs_iflags_set(ip, XFS_IRECLAIMABLE); + spin_unlock(&ip->i_flags_lock); + spin_unlock(&pag->pag_ici_lock); + xfs_perag_put(pag); +} + +STATIC void +__xfs_inode_clear_reclaim( + xfs_perag_t *pag, + xfs_inode_t *ip) +{ + pag->pag_ici_reclaimable--; + if (!pag->pag_ici_reclaimable) { + /* clear the reclaim tag from the perag radix tree */ + spin_lock(&ip->i_mount->m_perag_lock); + radix_tree_tag_clear(&ip->i_mount->m_perag_tree, + XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino), + XFS_ICI_RECLAIM_TAG); + spin_unlock(&ip->i_mount->m_perag_lock); + trace_xfs_perag_clear_reclaim(ip->i_mount, pag->pag_agno, + -1, _RET_IP_); + } +} + +void +__xfs_inode_clear_reclaim_tag( + xfs_mount_t *mp, + xfs_perag_t *pag, + xfs_inode_t *ip) +{ + radix_tree_tag_clear(&pag->pag_ici_root, + XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG); + __xfs_inode_clear_reclaim(pag, ip); +} + +/* + * Grab the inode for reclaim exclusively. + * Return 0 if we grabbed it, non-zero otherwise. + */ +STATIC int +xfs_reclaim_inode_grab( + struct xfs_inode *ip, + int flags) +{ + ASSERT(rcu_read_lock_held()); + + /* quick check for stale RCU freed inode */ + if (!ip->i_ino) + return 1; + + /* + * do some unlocked checks first to avoid unnecessary lock traffic. + * The first is a flush lock check, the second is a already in reclaim + * check. Only do these checks if we are not going to block on locks. + */ + if ((flags & SYNC_TRYLOCK) && + (!ip->i_flush.done || __xfs_iflags_test(ip, XFS_IRECLAIM))) { + return 1; + } + + /* + * The radix tree lock here protects a thread in xfs_iget from racing + * with us starting reclaim on the inode. Once we have the + * XFS_IRECLAIM flag set it will not touch us. + * + * Due to RCU lookup, we may find inodes that have been freed and only + * have XFS_IRECLAIM set. Indeed, we may see reallocated inodes that + * aren't candidates for reclaim at all, so we must check the + * XFS_IRECLAIMABLE is set first before proceeding to reclaim. + */ + spin_lock(&ip->i_flags_lock); + if (!__xfs_iflags_test(ip, XFS_IRECLAIMABLE) || + __xfs_iflags_test(ip, XFS_IRECLAIM)) { + /* not a reclaim candidate. */ + spin_unlock(&ip->i_flags_lock); + return 1; + } + __xfs_iflags_set(ip, XFS_IRECLAIM); + spin_unlock(&ip->i_flags_lock); + return 0; +} + +/* + * Inodes in different states need to be treated differently, and the return + * value of xfs_iflush is not sufficient to get this right. The following table + * lists the inode states and the reclaim actions necessary for non-blocking + * reclaim: + * + * + * inode state iflush ret required action + * --------------- ---------- --------------- + * bad - reclaim + * shutdown EIO unpin and reclaim + * clean, unpinned 0 reclaim + * stale, unpinned 0 reclaim + * clean, pinned(*) 0 requeue + * stale, pinned EAGAIN requeue + * dirty, delwri ok 0 requeue + * dirty, delwri blocked EAGAIN requeue + * dirty, sync flush 0 reclaim + * + * (*) dgc: I don't think the clean, pinned state is possible but it gets + * handled anyway given the order of checks implemented. + * + * As can be seen from the table, the return value of xfs_iflush() is not + * sufficient to correctly decide the reclaim action here. The checks in + * xfs_iflush() might look like duplicates, but they are not. + * + * Also, because we get the flush lock first, we know that any inode that has + * been flushed delwri has had the flush completed by the time we check that + * the inode is clean. The clean inode check needs to be done before flushing + * the inode delwri otherwise we would loop forever requeuing clean inodes as + * we cannot tell apart a successful delwri flush and a clean inode from the + * return value of xfs_iflush(). + * + * Note that because the inode is flushed delayed write by background + * writeback, the flush lock may already be held here and waiting on it can + * result in very long latencies. Hence for sync reclaims, where we wait on the + * flush lock, the caller should push out delayed write inodes first before + * trying to reclaim them to minimise the amount of time spent waiting. For + * background relaim, we just requeue the inode for the next pass. + * + * Hence the order of actions after gaining the locks should be: + * bad => reclaim + * shutdown => unpin and reclaim + * pinned, delwri => requeue + * pinned, sync => unpin + * stale => reclaim + * clean => reclaim + * dirty, delwri => flush and requeue + * dirty, sync => flush, wait and reclaim + */ +STATIC int +xfs_reclaim_inode( + struct xfs_inode *ip, + struct xfs_perag *pag, + int sync_mode) +{ + int error; + +restart: + error = 0; + xfs_ilock(ip, XFS_ILOCK_EXCL); + if (!xfs_iflock_nowait(ip)) { + if (!(sync_mode & SYNC_WAIT)) + goto out; + xfs_iflock(ip); + } + + if (is_bad_inode(VFS_I(ip))) + goto reclaim; + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_iunpin_wait(ip); + goto reclaim; + } + if (xfs_ipincount(ip)) { + if (!(sync_mode & SYNC_WAIT)) { + xfs_ifunlock(ip); + goto out; + } + xfs_iunpin_wait(ip); + } + if (xfs_iflags_test(ip, XFS_ISTALE)) + goto reclaim; + if (xfs_inode_clean(ip)) + goto reclaim; + + /* + * Now we have an inode that needs flushing. + * + * We do a nonblocking flush here even if we are doing a SYNC_WAIT + * reclaim as we can deadlock with inode cluster removal. + * xfs_ifree_cluster() can lock the inode buffer before it locks the + * ip->i_lock, and we are doing the exact opposite here. As a result, + * doing a blocking xfs_itobp() to get the cluster buffer will result + * in an ABBA deadlock with xfs_ifree_cluster(). + * + * As xfs_ifree_cluser() must gather all inodes that are active in the + * cache to mark them stale, if we hit this case we don't actually want + * to do IO here - we want the inode marked stale so we can simply + * reclaim it. Hence if we get an EAGAIN error on a SYNC_WAIT flush, + * just unlock the inode, back off and try again. Hopefully the next + * pass through will see the stale flag set on the inode. + */ + error = xfs_iflush(ip, SYNC_TRYLOCK | sync_mode); + if (sync_mode & SYNC_WAIT) { + if (error == EAGAIN) { + xfs_iunlock(ip, XFS_ILOCK_EXCL); + /* backoff longer than in xfs_ifree_cluster */ + delay(2); + goto restart; + } + xfs_iflock(ip); + goto reclaim; + } + + /* + * When we have to flush an inode but don't have SYNC_WAIT set, we + * flush the inode out using a delwri buffer and wait for the next + * call into reclaim to find it in a clean state instead of waiting for + * it now. We also don't return errors here - if the error is transient + * then the next reclaim pass will flush the inode, and if the error + * is permanent then the next sync reclaim will reclaim the inode and + * pass on the error. + */ + if (error && error != EAGAIN && !XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_warn(ip->i_mount, + "inode 0x%llx background reclaim flush failed with %d", + (long long)ip->i_ino, error); + } +out: + xfs_iflags_clear(ip, XFS_IRECLAIM); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + /* + * We could return EAGAIN here to make reclaim rescan the inode tree in + * a short while. However, this just burns CPU time scanning the tree + * waiting for IO to complete and xfssyncd never goes back to the idle + * state. Instead, return 0 to let the next scheduled background reclaim + * attempt to reclaim the inode again. + */ + return 0; + +reclaim: + xfs_ifunlock(ip); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + XFS_STATS_INC(xs_ig_reclaims); + /* + * Remove the inode from the per-AG radix tree. + * + * Because radix_tree_delete won't complain even if the item was never + * added to the tree assert that it's been there before to catch + * problems with the inode life time early on. + */ + spin_lock(&pag->pag_ici_lock); + if (!radix_tree_delete(&pag->pag_ici_root, + XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino))) + ASSERT(0); + __xfs_inode_clear_reclaim(pag, ip); + spin_unlock(&pag->pag_ici_lock); + + /* + * Here we do an (almost) spurious inode lock in order to coordinate + * with inode cache radix tree lookups. This is because the lookup + * can reference the inodes in the cache without taking references. + * + * We make that OK here by ensuring that we wait until the inode is + * unlocked after the lookup before we go ahead and free it. We get + * both the ilock and the iolock because the code may need to drop the + * ilock one but will still hold the iolock. + */ + xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + xfs_qm_dqdetach(ip); + xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); + + xfs_inode_free(ip); + return error; + +} + +/* + * Walk the AGs and reclaim the inodes in them. Even if the filesystem is + * corrupted, we still want to try to reclaim all the inodes. If we don't, + * then a shut down during filesystem unmount reclaim walk leak all the + * unreclaimed inodes. + */ +int +xfs_reclaim_inodes_ag( + struct xfs_mount *mp, + int flags, + int *nr_to_scan) +{ + struct xfs_perag *pag; + int error = 0; + int last_error = 0; + xfs_agnumber_t ag; + int trylock = flags & SYNC_TRYLOCK; + int skipped; + +restart: + ag = 0; + skipped = 0; + while ((pag = xfs_perag_get_tag(mp, ag, XFS_ICI_RECLAIM_TAG))) { + unsigned long first_index = 0; + int done = 0; + int nr_found = 0; + + ag = pag->pag_agno + 1; + + if (trylock) { + if (!mutex_trylock(&pag->pag_ici_reclaim_lock)) { + skipped++; + xfs_perag_put(pag); + continue; + } + first_index = pag->pag_ici_reclaim_cursor; + } else + mutex_lock(&pag->pag_ici_reclaim_lock); + + do { + struct xfs_inode *batch[XFS_LOOKUP_BATCH]; + int i; + + rcu_read_lock(); + nr_found = radix_tree_gang_lookup_tag( + &pag->pag_ici_root, + (void **)batch, first_index, + XFS_LOOKUP_BATCH, + XFS_ICI_RECLAIM_TAG); + if (!nr_found) { + done = 1; + rcu_read_unlock(); + break; + } + + /* + * Grab the inodes before we drop the lock. if we found + * nothing, nr == 0 and the loop will be skipped. + */ + for (i = 0; i < nr_found; i++) { + struct xfs_inode *ip = batch[i]; + + if (done || xfs_reclaim_inode_grab(ip, flags)) + batch[i] = NULL; + + /* + * Update the index for the next lookup. Catch + * overflows into the next AG range which can + * occur if we have inodes in the last block of + * the AG and we are currently pointing to the + * last inode. + * + * Because we may see inodes that are from the + * wrong AG due to RCU freeing and + * reallocation, only update the index if it + * lies in this AG. It was a race that lead us + * to see this inode, so another lookup from + * the same index will not find it again. + */ + if (XFS_INO_TO_AGNO(mp, ip->i_ino) != + pag->pag_agno) + continue; + first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); + if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) + done = 1; + } + + /* unlock now we've grabbed the inodes. */ + rcu_read_unlock(); + + for (i = 0; i < nr_found; i++) { + if (!batch[i]) + continue; + error = xfs_reclaim_inode(batch[i], pag, flags); + if (error && last_error != EFSCORRUPTED) + last_error = error; + } + + *nr_to_scan -= XFS_LOOKUP_BATCH; + + cond_resched(); + + } while (nr_found && !done && *nr_to_scan > 0); + + if (trylock && !done) + pag->pag_ici_reclaim_cursor = first_index; + else + pag->pag_ici_reclaim_cursor = 0; + mutex_unlock(&pag->pag_ici_reclaim_lock); + xfs_perag_put(pag); + } + + /* + * if we skipped any AG, and we still have scan count remaining, do + * another pass this time using blocking reclaim semantics (i.e + * waiting on the reclaim locks and ignoring the reclaim cursors). This + * ensure that when we get more reclaimers than AGs we block rather + * than spin trying to execute reclaim. + */ + if (skipped && (flags & SYNC_WAIT) && *nr_to_scan > 0) { + trylock = 0; + goto restart; + } + return XFS_ERROR(last_error); +} + +int +xfs_reclaim_inodes( + xfs_mount_t *mp, + int mode) +{ + int nr_to_scan = INT_MAX; + + return xfs_reclaim_inodes_ag(mp, mode, &nr_to_scan); +} + +/* + * Scan a certain number of inodes for reclaim. + * + * When called we make sure that there is a background (fast) inode reclaim in + * progress, while we will throttle the speed of reclaim via doing synchronous + * reclaim of inodes. That means if we come across dirty inodes, we wait for + * them to be cleaned, which we hope will not be very long due to the + * background walker having already kicked the IO off on those dirty inodes. + */ +void +xfs_reclaim_inodes_nr( + struct xfs_mount *mp, + int nr_to_scan) +{ + /* kick background reclaimer and push the AIL */ + xfs_syncd_queue_reclaim(mp); + xfs_ail_push_all(mp->m_ail); + + xfs_reclaim_inodes_ag(mp, SYNC_TRYLOCK | SYNC_WAIT, &nr_to_scan); +} + +/* + * Return the number of reclaimable inodes in the filesystem for + * the shrinker to determine how much to reclaim. + */ +int +xfs_reclaim_inodes_count( + struct xfs_mount *mp) +{ + struct xfs_perag *pag; + xfs_agnumber_t ag = 0; + int reclaimable = 0; + + while ((pag = xfs_perag_get_tag(mp, ag, XFS_ICI_RECLAIM_TAG))) { + ag = pag->pag_agno + 1; + reclaimable += pag->pag_ici_reclaimable; + xfs_perag_put(pag); + } + return reclaimable; +} + diff --git a/fs/xfs/xfs_sync.h b/fs/xfs/xfs_sync.h new file mode 100644 index 000000000000..941202e7ac6e --- /dev/null +++ b/fs/xfs/xfs_sync.h @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef XFS_SYNC_H +#define XFS_SYNC_H 1 + +struct xfs_mount; +struct xfs_perag; + +#define SYNC_WAIT 0x0001 /* wait for i/o to complete */ +#define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ + +extern struct workqueue_struct *xfs_syncd_wq; /* sync workqueue */ + +int xfs_syncd_init(struct xfs_mount *mp); +void xfs_syncd_stop(struct xfs_mount *mp); + +int xfs_quiesce_data(struct xfs_mount *mp); +void xfs_quiesce_attr(struct xfs_mount *mp); + +void xfs_flush_inodes(struct xfs_inode *ip); + +int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); +int xfs_reclaim_inodes_count(struct xfs_mount *mp); +void xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); + +void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); +void __xfs_inode_set_reclaim_tag(struct xfs_perag *pag, struct xfs_inode *ip); +void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag, + struct xfs_inode *ip); + +int xfs_sync_inode_grab(struct xfs_inode *ip); +int xfs_inode_ag_iterator(struct xfs_mount *mp, + int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags), + int flags); + +#endif diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c new file mode 100644 index 000000000000..ee2d2adaa438 --- /dev/null +++ b/fs/xfs/xfs_sysctl.c @@ -0,0 +1,252 @@ +/* + * Copyright (c) 2001-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include +#include +#include "xfs_error.h" + +static struct ctl_table_header *xfs_table_header; + +#ifdef CONFIG_PROC_FS +STATIC int +xfs_stats_clear_proc_handler( + ctl_table *ctl, + int write, + void __user *buffer, + size_t *lenp, + loff_t *ppos) +{ + int c, ret, *valp = ctl->data; + __uint32_t vn_active; + + ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); + + if (!ret && write && *valp) { + xfs_notice(NULL, "Clearing xfsstats"); + for_each_possible_cpu(c) { + preempt_disable(); + /* save vn_active, it's a universal truth! */ + vn_active = per_cpu(xfsstats, c).vn_active; + memset(&per_cpu(xfsstats, c), 0, + sizeof(struct xfsstats)); + per_cpu(xfsstats, c).vn_active = vn_active; + preempt_enable(); + } + xfs_stats_clear = 0; + } + + return ret; +} + +STATIC int +xfs_panic_mask_proc_handler( + ctl_table *ctl, + int write, + void __user *buffer, + size_t *lenp, + loff_t *ppos) +{ + int ret, *valp = ctl->data; + + ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); + if (!ret && write) { + xfs_panic_mask = *valp; +#ifdef DEBUG + xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES); +#endif + } + return ret; +} +#endif /* CONFIG_PROC_FS */ + +static ctl_table xfs_table[] = { + { + .procname = "irix_sgid_inherit", + .data = &xfs_params.sgid_inherit.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.sgid_inherit.min, + .extra2 = &xfs_params.sgid_inherit.max + }, + { + .procname = "irix_symlink_mode", + .data = &xfs_params.symlink_mode.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.symlink_mode.min, + .extra2 = &xfs_params.symlink_mode.max + }, + { + .procname = "panic_mask", + .data = &xfs_params.panic_mask.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = xfs_panic_mask_proc_handler, + .extra1 = &xfs_params.panic_mask.min, + .extra2 = &xfs_params.panic_mask.max + }, + + { + .procname = "error_level", + .data = &xfs_params.error_level.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.error_level.min, + .extra2 = &xfs_params.error_level.max + }, + { + .procname = "xfssyncd_centisecs", + .data = &xfs_params.syncd_timer.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.syncd_timer.min, + .extra2 = &xfs_params.syncd_timer.max + }, + { + .procname = "inherit_sync", + .data = &xfs_params.inherit_sync.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.inherit_sync.min, + .extra2 = &xfs_params.inherit_sync.max + }, + { + .procname = "inherit_nodump", + .data = &xfs_params.inherit_nodump.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.inherit_nodump.min, + .extra2 = &xfs_params.inherit_nodump.max + }, + { + .procname = "inherit_noatime", + .data = &xfs_params.inherit_noatim.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.inherit_noatim.min, + .extra2 = &xfs_params.inherit_noatim.max + }, + { + .procname = "xfsbufd_centisecs", + .data = &xfs_params.xfs_buf_timer.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.xfs_buf_timer.min, + .extra2 = &xfs_params.xfs_buf_timer.max + }, + { + .procname = "age_buffer_centisecs", + .data = &xfs_params.xfs_buf_age.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.xfs_buf_age.min, + .extra2 = &xfs_params.xfs_buf_age.max + }, + { + .procname = "inherit_nosymlinks", + .data = &xfs_params.inherit_nosym.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.inherit_nosym.min, + .extra2 = &xfs_params.inherit_nosym.max + }, + { + .procname = "rotorstep", + .data = &xfs_params.rotorstep.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.rotorstep.min, + .extra2 = &xfs_params.rotorstep.max + }, + { + .procname = "inherit_nodefrag", + .data = &xfs_params.inherit_nodfrg.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.inherit_nodfrg.min, + .extra2 = &xfs_params.inherit_nodfrg.max + }, + { + .procname = "filestream_centisecs", + .data = &xfs_params.fstrm_timer.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &xfs_params.fstrm_timer.min, + .extra2 = &xfs_params.fstrm_timer.max, + }, + /* please keep this the last entry */ +#ifdef CONFIG_PROC_FS + { + .procname = "stats_clear", + .data = &xfs_params.stats_clear.val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = xfs_stats_clear_proc_handler, + .extra1 = &xfs_params.stats_clear.min, + .extra2 = &xfs_params.stats_clear.max + }, +#endif /* CONFIG_PROC_FS */ + + {} +}; + +static ctl_table xfs_dir_table[] = { + { + .procname = "xfs", + .mode = 0555, + .child = xfs_table + }, + {} +}; + +static ctl_table xfs_root_table[] = { + { + .procname = "fs", + .mode = 0555, + .child = xfs_dir_table + }, + {} +}; + +int +xfs_sysctl_register(void) +{ + xfs_table_header = register_sysctl_table(xfs_root_table); + if (!xfs_table_header) + return -ENOMEM; + return 0; +} + +void +xfs_sysctl_unregister(void) +{ + unregister_sysctl_table(xfs_table_header); +} diff --git a/fs/xfs/xfs_sysctl.h b/fs/xfs/xfs_sysctl.h new file mode 100644 index 000000000000..b9937d450f8e --- /dev/null +++ b/fs/xfs/xfs_sysctl.h @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2001-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_SYSCTL_H__ +#define __XFS_SYSCTL_H__ + +#include + +/* + * Tunable xfs parameters + */ + +typedef struct xfs_sysctl_val { + int min; + int val; + int max; +} xfs_sysctl_val_t; + +typedef struct xfs_param { + xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is + * not a member of parent dir GID. */ + xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */ + xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */ + xfs_sysctl_val_t error_level; /* Degree of reporting for problems */ + xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */ + xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */ + xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */ + xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */ + xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */ + xfs_sysctl_val_t xfs_buf_timer; /* Interval between xfsbufd wakeups. */ + xfs_sysctl_val_t xfs_buf_age; /* Metadata buffer age before flush. */ + xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */ + xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */ + xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */ + xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */ +} xfs_param_t; + +/* + * xfs_error_level: + * + * How much error reporting will be done when internal problems are + * encountered. These problems normally return an EFSCORRUPTED to their + * caller, with no other information reported. + * + * 0 No error reports + * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown + * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any + * additional errors that are known to not cause shutdowns) + * + * xfs_panic_mask bit 0x8 turns the error reports into panics + */ + +enum { + /* XFS_REFCACHE_SIZE = 1 */ + /* XFS_REFCACHE_PURGE = 2 */ + /* XFS_RESTRICT_CHOWN = 3 */ + XFS_SGID_INHERIT = 4, + XFS_SYMLINK_MODE = 5, + XFS_PANIC_MASK = 6, + XFS_ERRLEVEL = 7, + XFS_SYNCD_TIMER = 8, + /* XFS_PROBE_DMAPI = 9 */ + /* XFS_PROBE_IOOPS = 10 */ + /* XFS_PROBE_QUOTA = 11 */ + XFS_STATS_CLEAR = 12, + XFS_INHERIT_SYNC = 13, + XFS_INHERIT_NODUMP = 14, + XFS_INHERIT_NOATIME = 15, + XFS_BUF_TIMER = 16, + XFS_BUF_AGE = 17, + /* XFS_IO_BYPASS = 18 */ + XFS_INHERIT_NOSYM = 19, + XFS_ROTORSTEP = 20, + XFS_INHERIT_NODFRG = 21, + XFS_FILESTREAM_TIMER = 22, +}; + +extern xfs_param_t xfs_params; + +#ifdef CONFIG_SYSCTL +extern int xfs_sysctl_register(void); +extern void xfs_sysctl_unregister(void); +#else +# define xfs_sysctl_register() (0) +# define xfs_sysctl_unregister() do { } while (0) +#endif /* CONFIG_SYSCTL */ + +#endif /* __XFS_SYSCTL_H__ */ diff --git a/fs/xfs/xfs_trace.c b/fs/xfs/xfs_trace.c new file mode 100644 index 000000000000..9010ce885e6a --- /dev/null +++ b/fs/xfs/xfs_trace.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2009, Christoph Hellwig + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_types.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_da_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_btree.h" +#include "xfs_mount.h" +#include "xfs_ialloc.h" +#include "xfs_itable.h" +#include "xfs_alloc.h" +#include "xfs_bmap.h" +#include "xfs_attr.h" +#include "xfs_attr_leaf.h" +#include "xfs_log_priv.h" +#include "xfs_buf_item.h" +#include "xfs_quota.h" +#include "xfs_iomap.h" +#include "xfs_aops.h" +#include "xfs_dquot_item.h" +#include "xfs_dquot.h" +#include "xfs_log_recover.h" +#include "xfs_inode_item.h" + +/* + * We include this last to have the helpers above available for the trace + * event implementations. + */ +#define CREATE_TRACE_POINTS +#include "xfs_trace.h" diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h new file mode 100644 index 000000000000..690fc7a7bd72 --- /dev/null +++ b/fs/xfs/xfs_trace.h @@ -0,0 +1,1746 @@ +/* + * Copyright (c) 2009, Christoph Hellwig + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM xfs + +#if !defined(_TRACE_XFS_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_XFS_H + +#include + +struct xfs_agf; +struct xfs_alloc_arg; +struct xfs_attr_list_context; +struct xfs_buf_log_item; +struct xfs_da_args; +struct xfs_da_node_entry; +struct xfs_dquot; +struct xlog_ticket; +struct log; +struct xlog_recover; +struct xlog_recover_item; +struct xfs_buf_log_format; +struct xfs_inode_log_format; + +DECLARE_EVENT_CLASS(xfs_attr_list_class, + TP_PROTO(struct xfs_attr_list_context *ctx), + TP_ARGS(ctx), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(u32, hashval) + __field(u32, blkno) + __field(u32, offset) + __field(void *, alist) + __field(int, bufsize) + __field(int, count) + __field(int, firstu) + __field(int, dupcnt) + __field(int, flags) + ), + TP_fast_assign( + __entry->dev = VFS_I(ctx->dp)->i_sb->s_dev; + __entry->ino = ctx->dp->i_ino; + __entry->hashval = ctx->cursor->hashval; + __entry->blkno = ctx->cursor->blkno; + __entry->offset = ctx->cursor->offset; + __entry->alist = ctx->alist; + __entry->bufsize = ctx->bufsize; + __entry->count = ctx->count; + __entry->firstu = ctx->firstu; + __entry->flags = ctx->flags; + ), + TP_printk("dev %d:%d ino 0x%llx cursor h/b/o 0x%x/0x%x/%u dupcnt %u " + "alist 0x%p size %u count %u firstu %u flags %d %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->hashval, + __entry->blkno, + __entry->offset, + __entry->dupcnt, + __entry->alist, + __entry->bufsize, + __entry->count, + __entry->firstu, + __entry->flags, + __print_flags(__entry->flags, "|", XFS_ATTR_FLAGS) + ) +) + +#define DEFINE_ATTR_LIST_EVENT(name) \ +DEFINE_EVENT(xfs_attr_list_class, name, \ + TP_PROTO(struct xfs_attr_list_context *ctx), \ + TP_ARGS(ctx)) +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_sf); +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_sf_all); +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_leaf); +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_leaf_end); +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_full); +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_add); +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_wrong_blk); +DEFINE_ATTR_LIST_EVENT(xfs_attr_list_notfound); + +DECLARE_EVENT_CLASS(xfs_perag_class, + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int refcount, + unsigned long caller_ip), + TP_ARGS(mp, agno, refcount, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(int, refcount) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = agno; + __entry->refcount = refcount; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d agno %u refcount %d caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->refcount, + (char *)__entry->caller_ip) +); + +#define DEFINE_PERAG_REF_EVENT(name) \ +DEFINE_EVENT(xfs_perag_class, name, \ + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int refcount, \ + unsigned long caller_ip), \ + TP_ARGS(mp, agno, refcount, caller_ip)) +DEFINE_PERAG_REF_EVENT(xfs_perag_get); +DEFINE_PERAG_REF_EVENT(xfs_perag_get_tag); +DEFINE_PERAG_REF_EVENT(xfs_perag_put); +DEFINE_PERAG_REF_EVENT(xfs_perag_set_reclaim); +DEFINE_PERAG_REF_EVENT(xfs_perag_clear_reclaim); + +TRACE_EVENT(xfs_attr_list_node_descend, + TP_PROTO(struct xfs_attr_list_context *ctx, + struct xfs_da_node_entry *btree), + TP_ARGS(ctx, btree), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(u32, hashval) + __field(u32, blkno) + __field(u32, offset) + __field(void *, alist) + __field(int, bufsize) + __field(int, count) + __field(int, firstu) + __field(int, dupcnt) + __field(int, flags) + __field(u32, bt_hashval) + __field(u32, bt_before) + ), + TP_fast_assign( + __entry->dev = VFS_I(ctx->dp)->i_sb->s_dev; + __entry->ino = ctx->dp->i_ino; + __entry->hashval = ctx->cursor->hashval; + __entry->blkno = ctx->cursor->blkno; + __entry->offset = ctx->cursor->offset; + __entry->alist = ctx->alist; + __entry->bufsize = ctx->bufsize; + __entry->count = ctx->count; + __entry->firstu = ctx->firstu; + __entry->flags = ctx->flags; + __entry->bt_hashval = be32_to_cpu(btree->hashval); + __entry->bt_before = be32_to_cpu(btree->before); + ), + TP_printk("dev %d:%d ino 0x%llx cursor h/b/o 0x%x/0x%x/%u dupcnt %u " + "alist 0x%p size %u count %u firstu %u flags %d %s " + "node hashval %u, node before %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->hashval, + __entry->blkno, + __entry->offset, + __entry->dupcnt, + __entry->alist, + __entry->bufsize, + __entry->count, + __entry->firstu, + __entry->flags, + __print_flags(__entry->flags, "|", XFS_ATTR_FLAGS), + __entry->bt_hashval, + __entry->bt_before) +); + +TRACE_EVENT(xfs_iext_insert, + TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, + struct xfs_bmbt_irec *r, int state, unsigned long caller_ip), + TP_ARGS(ip, idx, r, state, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(xfs_extnum_t, idx) + __field(xfs_fileoff_t, startoff) + __field(xfs_fsblock_t, startblock) + __field(xfs_filblks_t, blockcount) + __field(xfs_exntst_t, state) + __field(int, bmap_state) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->idx = idx; + __entry->startoff = r->br_startoff; + __entry->startblock = r->br_startblock; + __entry->blockcount = r->br_blockcount; + __entry->state = r->br_state; + __entry->bmap_state = state; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d ino 0x%llx state %s idx %ld " + "offset %lld block %lld count %lld flag %d caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS), + (long)__entry->idx, + __entry->startoff, + (__int64_t)__entry->startblock, + __entry->blockcount, + __entry->state, + (char *)__entry->caller_ip) +); + +DECLARE_EVENT_CLASS(xfs_bmap_class, + TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, int state, + unsigned long caller_ip), + TP_ARGS(ip, idx, state, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(xfs_extnum_t, idx) + __field(xfs_fileoff_t, startoff) + __field(xfs_fsblock_t, startblock) + __field(xfs_filblks_t, blockcount) + __field(xfs_exntst_t, state) + __field(int, bmap_state) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + struct xfs_ifork *ifp = (state & BMAP_ATTRFORK) ? + ip->i_afp : &ip->i_df; + struct xfs_bmbt_irec r; + + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &r); + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->idx = idx; + __entry->startoff = r.br_startoff; + __entry->startblock = r.br_startblock; + __entry->blockcount = r.br_blockcount; + __entry->state = r.br_state; + __entry->bmap_state = state; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d ino 0x%llx state %s idx %ld " + "offset %lld block %lld count %lld flag %d caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS), + (long)__entry->idx, + __entry->startoff, + (__int64_t)__entry->startblock, + __entry->blockcount, + __entry->state, + (char *)__entry->caller_ip) +) + +#define DEFINE_BMAP_EVENT(name) \ +DEFINE_EVENT(xfs_bmap_class, name, \ + TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, int state, \ + unsigned long caller_ip), \ + TP_ARGS(ip, idx, state, caller_ip)) +DEFINE_BMAP_EVENT(xfs_iext_remove); +DEFINE_BMAP_EVENT(xfs_bmap_pre_update); +DEFINE_BMAP_EVENT(xfs_bmap_post_update); +DEFINE_BMAP_EVENT(xfs_extlist); + +DECLARE_EVENT_CLASS(xfs_buf_class, + TP_PROTO(struct xfs_buf *bp, unsigned long caller_ip), + TP_ARGS(bp, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_daddr_t, bno) + __field(size_t, buffer_length) + __field(int, hold) + __field(int, pincount) + __field(unsigned, lockval) + __field(unsigned, flags) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = bp->b_target->bt_dev; + __entry->bno = bp->b_bn; + __entry->buffer_length = bp->b_buffer_length; + __entry->hold = atomic_read(&bp->b_hold); + __entry->pincount = atomic_read(&bp->b_pin_count); + __entry->lockval = bp->b_sema.count; + __entry->flags = bp->b_flags; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " + "lock %d flags %s caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->bno, + __entry->buffer_length, + __entry->hold, + __entry->pincount, + __entry->lockval, + __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), + (void *)__entry->caller_ip) +) + +#define DEFINE_BUF_EVENT(name) \ +DEFINE_EVENT(xfs_buf_class, name, \ + TP_PROTO(struct xfs_buf *bp, unsigned long caller_ip), \ + TP_ARGS(bp, caller_ip)) +DEFINE_BUF_EVENT(xfs_buf_init); +DEFINE_BUF_EVENT(xfs_buf_free); +DEFINE_BUF_EVENT(xfs_buf_hold); +DEFINE_BUF_EVENT(xfs_buf_rele); +DEFINE_BUF_EVENT(xfs_buf_iodone); +DEFINE_BUF_EVENT(xfs_buf_iorequest); +DEFINE_BUF_EVENT(xfs_buf_bawrite); +DEFINE_BUF_EVENT(xfs_buf_bdwrite); +DEFINE_BUF_EVENT(xfs_buf_lock); +DEFINE_BUF_EVENT(xfs_buf_lock_done); +DEFINE_BUF_EVENT(xfs_buf_trylock); +DEFINE_BUF_EVENT(xfs_buf_unlock); +DEFINE_BUF_EVENT(xfs_buf_iowait); +DEFINE_BUF_EVENT(xfs_buf_iowait_done); +DEFINE_BUF_EVENT(xfs_buf_delwri_queue); +DEFINE_BUF_EVENT(xfs_buf_delwri_dequeue); +DEFINE_BUF_EVENT(xfs_buf_delwri_split); +DEFINE_BUF_EVENT(xfs_buf_get_uncached); +DEFINE_BUF_EVENT(xfs_bdstrat_shut); +DEFINE_BUF_EVENT(xfs_buf_item_relse); +DEFINE_BUF_EVENT(xfs_buf_item_iodone); +DEFINE_BUF_EVENT(xfs_buf_item_iodone_async); +DEFINE_BUF_EVENT(xfs_buf_error_relse); +DEFINE_BUF_EVENT(xfs_trans_read_buf_io); +DEFINE_BUF_EVENT(xfs_trans_read_buf_shut); + +/* not really buffer traces, but the buf provides useful information */ +DEFINE_BUF_EVENT(xfs_btree_corrupt); +DEFINE_BUF_EVENT(xfs_da_btree_corrupt); +DEFINE_BUF_EVENT(xfs_reset_dqcounts); +DEFINE_BUF_EVENT(xfs_inode_item_push); + +/* pass flags explicitly */ +DECLARE_EVENT_CLASS(xfs_buf_flags_class, + TP_PROTO(struct xfs_buf *bp, unsigned flags, unsigned long caller_ip), + TP_ARGS(bp, flags, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_daddr_t, bno) + __field(size_t, buffer_length) + __field(int, hold) + __field(int, pincount) + __field(unsigned, lockval) + __field(unsigned, flags) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = bp->b_target->bt_dev; + __entry->bno = bp->b_bn; + __entry->buffer_length = bp->b_buffer_length; + __entry->flags = flags; + __entry->hold = atomic_read(&bp->b_hold); + __entry->pincount = atomic_read(&bp->b_pin_count); + __entry->lockval = bp->b_sema.count; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " + "lock %d flags %s caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->bno, + __entry->buffer_length, + __entry->hold, + __entry->pincount, + __entry->lockval, + __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), + (void *)__entry->caller_ip) +) + +#define DEFINE_BUF_FLAGS_EVENT(name) \ +DEFINE_EVENT(xfs_buf_flags_class, name, \ + TP_PROTO(struct xfs_buf *bp, unsigned flags, unsigned long caller_ip), \ + TP_ARGS(bp, flags, caller_ip)) +DEFINE_BUF_FLAGS_EVENT(xfs_buf_find); +DEFINE_BUF_FLAGS_EVENT(xfs_buf_get); +DEFINE_BUF_FLAGS_EVENT(xfs_buf_read); + +TRACE_EVENT(xfs_buf_ioerror, + TP_PROTO(struct xfs_buf *bp, int error, unsigned long caller_ip), + TP_ARGS(bp, error, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_daddr_t, bno) + __field(size_t, buffer_length) + __field(unsigned, flags) + __field(int, hold) + __field(int, pincount) + __field(unsigned, lockval) + __field(int, error) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = bp->b_target->bt_dev; + __entry->bno = bp->b_bn; + __entry->buffer_length = bp->b_buffer_length; + __entry->hold = atomic_read(&bp->b_hold); + __entry->pincount = atomic_read(&bp->b_pin_count); + __entry->lockval = bp->b_sema.count; + __entry->error = error; + __entry->flags = bp->b_flags; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " + "lock %d error %d flags %s caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->bno, + __entry->buffer_length, + __entry->hold, + __entry->pincount, + __entry->lockval, + __entry->error, + __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), + (void *)__entry->caller_ip) +); + +DECLARE_EVENT_CLASS(xfs_buf_item_class, + TP_PROTO(struct xfs_buf_log_item *bip), + TP_ARGS(bip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_daddr_t, buf_bno) + __field(size_t, buf_len) + __field(int, buf_hold) + __field(int, buf_pincount) + __field(int, buf_lockval) + __field(unsigned, buf_flags) + __field(unsigned, bli_recur) + __field(int, bli_refcount) + __field(unsigned, bli_flags) + __field(void *, li_desc) + __field(unsigned, li_flags) + ), + TP_fast_assign( + __entry->dev = bip->bli_buf->b_target->bt_dev; + __entry->bli_flags = bip->bli_flags; + __entry->bli_recur = bip->bli_recur; + __entry->bli_refcount = atomic_read(&bip->bli_refcount); + __entry->buf_bno = bip->bli_buf->b_bn; + __entry->buf_len = bip->bli_buf->b_buffer_length; + __entry->buf_flags = bip->bli_buf->b_flags; + __entry->buf_hold = atomic_read(&bip->bli_buf->b_hold); + __entry->buf_pincount = atomic_read(&bip->bli_buf->b_pin_count); + __entry->buf_lockval = bip->bli_buf->b_sema.count; + __entry->li_desc = bip->bli_item.li_desc; + __entry->li_flags = bip->bli_item.li_flags; + ), + TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " + "lock %d flags %s recur %d refcount %d bliflags %s " + "lidesc 0x%p liflags %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->buf_bno, + __entry->buf_len, + __entry->buf_hold, + __entry->buf_pincount, + __entry->buf_lockval, + __print_flags(__entry->buf_flags, "|", XFS_BUF_FLAGS), + __entry->bli_recur, + __entry->bli_refcount, + __print_flags(__entry->bli_flags, "|", XFS_BLI_FLAGS), + __entry->li_desc, + __print_flags(__entry->li_flags, "|", XFS_LI_FLAGS)) +) + +#define DEFINE_BUF_ITEM_EVENT(name) \ +DEFINE_EVENT(xfs_buf_item_class, name, \ + TP_PROTO(struct xfs_buf_log_item *bip), \ + TP_ARGS(bip)) +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size_stale); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format_stale); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pin); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unpin); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unpin_stale); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_trylock); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock_stale); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_committed); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_push); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pushbuf); +DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf); +DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf_recur); +DEFINE_BUF_ITEM_EVENT(xfs_trans_getsb); +DEFINE_BUF_ITEM_EVENT(xfs_trans_getsb_recur); +DEFINE_BUF_ITEM_EVENT(xfs_trans_read_buf); +DEFINE_BUF_ITEM_EVENT(xfs_trans_read_buf_recur); +DEFINE_BUF_ITEM_EVENT(xfs_trans_log_buf); +DEFINE_BUF_ITEM_EVENT(xfs_trans_brelse); +DEFINE_BUF_ITEM_EVENT(xfs_trans_bjoin); +DEFINE_BUF_ITEM_EVENT(xfs_trans_bhold); +DEFINE_BUF_ITEM_EVENT(xfs_trans_bhold_release); +DEFINE_BUF_ITEM_EVENT(xfs_trans_binval); + +DECLARE_EVENT_CLASS(xfs_lock_class, + TP_PROTO(struct xfs_inode *ip, unsigned lock_flags, + unsigned long caller_ip), + TP_ARGS(ip, lock_flags, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(int, lock_flags) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->lock_flags = lock_flags; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d ino 0x%llx flags %s caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_flags(__entry->lock_flags, "|", XFS_LOCK_FLAGS), + (void *)__entry->caller_ip) +) + +#define DEFINE_LOCK_EVENT(name) \ +DEFINE_EVENT(xfs_lock_class, name, \ + TP_PROTO(struct xfs_inode *ip, unsigned lock_flags, \ + unsigned long caller_ip), \ + TP_ARGS(ip, lock_flags, caller_ip)) +DEFINE_LOCK_EVENT(xfs_ilock); +DEFINE_LOCK_EVENT(xfs_ilock_nowait); +DEFINE_LOCK_EVENT(xfs_ilock_demote); +DEFINE_LOCK_EVENT(xfs_iunlock); + +DECLARE_EVENT_CLASS(xfs_inode_class, + TP_PROTO(struct xfs_inode *ip), + TP_ARGS(ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + ), + TP_printk("dev %d:%d ino 0x%llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino) +) + +#define DEFINE_INODE_EVENT(name) \ +DEFINE_EVENT(xfs_inode_class, name, \ + TP_PROTO(struct xfs_inode *ip), \ + TP_ARGS(ip)) +DEFINE_INODE_EVENT(xfs_iget_skip); +DEFINE_INODE_EVENT(xfs_iget_reclaim); +DEFINE_INODE_EVENT(xfs_iget_reclaim_fail); +DEFINE_INODE_EVENT(xfs_iget_hit); +DEFINE_INODE_EVENT(xfs_iget_miss); + +DEFINE_INODE_EVENT(xfs_getattr); +DEFINE_INODE_EVENT(xfs_setattr); +DEFINE_INODE_EVENT(xfs_readlink); +DEFINE_INODE_EVENT(xfs_alloc_file_space); +DEFINE_INODE_EVENT(xfs_free_file_space); +DEFINE_INODE_EVENT(xfs_readdir); +#ifdef CONFIG_XFS_POSIX_ACL +DEFINE_INODE_EVENT(xfs_get_acl); +#endif +DEFINE_INODE_EVENT(xfs_vm_bmap); +DEFINE_INODE_EVENT(xfs_file_ioctl); +DEFINE_INODE_EVENT(xfs_file_compat_ioctl); +DEFINE_INODE_EVENT(xfs_ioctl_setattr); +DEFINE_INODE_EVENT(xfs_file_fsync); +DEFINE_INODE_EVENT(xfs_destroy_inode); +DEFINE_INODE_EVENT(xfs_write_inode); +DEFINE_INODE_EVENT(xfs_evict_inode); + +DEFINE_INODE_EVENT(xfs_dquot_dqalloc); +DEFINE_INODE_EVENT(xfs_dquot_dqdetach); + +DECLARE_EVENT_CLASS(xfs_iref_class, + TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), + TP_ARGS(ip, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(int, count) + __field(int, pincount) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->count = atomic_read(&VFS_I(ip)->i_count); + __entry->pincount = atomic_read(&ip->i_pincount); + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d ino 0x%llx count %d pincount %d caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->count, + __entry->pincount, + (char *)__entry->caller_ip) +) + +#define DEFINE_IREF_EVENT(name) \ +DEFINE_EVENT(xfs_iref_class, name, \ + TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), \ + TP_ARGS(ip, caller_ip)) +DEFINE_IREF_EVENT(xfs_ihold); +DEFINE_IREF_EVENT(xfs_irele); +DEFINE_IREF_EVENT(xfs_inode_pin); +DEFINE_IREF_EVENT(xfs_inode_unpin); +DEFINE_IREF_EVENT(xfs_inode_unpin_nowait); + +DECLARE_EVENT_CLASS(xfs_namespace_class, + TP_PROTO(struct xfs_inode *dp, struct xfs_name *name), + TP_ARGS(dp, name), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, dp_ino) + __dynamic_array(char, name, name->len) + ), + TP_fast_assign( + __entry->dev = VFS_I(dp)->i_sb->s_dev; + __entry->dp_ino = dp->i_ino; + memcpy(__get_str(name), name->name, name->len); + ), + TP_printk("dev %d:%d dp ino 0x%llx name %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->dp_ino, + __get_str(name)) +) + +#define DEFINE_NAMESPACE_EVENT(name) \ +DEFINE_EVENT(xfs_namespace_class, name, \ + TP_PROTO(struct xfs_inode *dp, struct xfs_name *name), \ + TP_ARGS(dp, name)) +DEFINE_NAMESPACE_EVENT(xfs_remove); +DEFINE_NAMESPACE_EVENT(xfs_link); +DEFINE_NAMESPACE_EVENT(xfs_lookup); +DEFINE_NAMESPACE_EVENT(xfs_create); +DEFINE_NAMESPACE_EVENT(xfs_symlink); + +TRACE_EVENT(xfs_rename, + TP_PROTO(struct xfs_inode *src_dp, struct xfs_inode *target_dp, + struct xfs_name *src_name, struct xfs_name *target_name), + TP_ARGS(src_dp, target_dp, src_name, target_name), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, src_dp_ino) + __field(xfs_ino_t, target_dp_ino) + __dynamic_array(char, src_name, src_name->len) + __dynamic_array(char, target_name, target_name->len) + ), + TP_fast_assign( + __entry->dev = VFS_I(src_dp)->i_sb->s_dev; + __entry->src_dp_ino = src_dp->i_ino; + __entry->target_dp_ino = target_dp->i_ino; + memcpy(__get_str(src_name), src_name->name, src_name->len); + memcpy(__get_str(target_name), target_name->name, target_name->len); + ), + TP_printk("dev %d:%d src dp ino 0x%llx target dp ino 0x%llx" + " src name %s target name %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->src_dp_ino, + __entry->target_dp_ino, + __get_str(src_name), + __get_str(target_name)) +) + +DECLARE_EVENT_CLASS(xfs_dquot_class, + TP_PROTO(struct xfs_dquot *dqp), + TP_ARGS(dqp), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(u32, id) + __field(unsigned, flags) + __field(unsigned, nrefs) + __field(unsigned long long, res_bcount) + __field(unsigned long long, bcount) + __field(unsigned long long, icount) + __field(unsigned long long, blk_hardlimit) + __field(unsigned long long, blk_softlimit) + __field(unsigned long long, ino_hardlimit) + __field(unsigned long long, ino_softlimit) + ), \ + TP_fast_assign( + __entry->dev = dqp->q_mount->m_super->s_dev; + __entry->id = be32_to_cpu(dqp->q_core.d_id); + __entry->flags = dqp->dq_flags; + __entry->nrefs = dqp->q_nrefs; + __entry->res_bcount = dqp->q_res_bcount; + __entry->bcount = be64_to_cpu(dqp->q_core.d_bcount); + __entry->icount = be64_to_cpu(dqp->q_core.d_icount); + __entry->blk_hardlimit = + be64_to_cpu(dqp->q_core.d_blk_hardlimit); + __entry->blk_softlimit = + be64_to_cpu(dqp->q_core.d_blk_softlimit); + __entry->ino_hardlimit = + be64_to_cpu(dqp->q_core.d_ino_hardlimit); + __entry->ino_softlimit = + be64_to_cpu(dqp->q_core.d_ino_softlimit); + ), + TP_printk("dev %d:%d id 0x%x flags %s nrefs %u res_bc 0x%llx " + "bcnt 0x%llx bhardlimit 0x%llx bsoftlimit 0x%llx " + "icnt 0x%llx ihardlimit 0x%llx isoftlimit 0x%llx]", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->id, + __print_flags(__entry->flags, "|", XFS_DQ_FLAGS), + __entry->nrefs, + __entry->res_bcount, + __entry->bcount, + __entry->blk_hardlimit, + __entry->blk_softlimit, + __entry->icount, + __entry->ino_hardlimit, + __entry->ino_softlimit) +) + +#define DEFINE_DQUOT_EVENT(name) \ +DEFINE_EVENT(xfs_dquot_class, name, \ + TP_PROTO(struct xfs_dquot *dqp), \ + TP_ARGS(dqp)) +DEFINE_DQUOT_EVENT(xfs_dqadjust); +DEFINE_DQUOT_EVENT(xfs_dqreclaim_want); +DEFINE_DQUOT_EVENT(xfs_dqreclaim_dirty); +DEFINE_DQUOT_EVENT(xfs_dqreclaim_unlink); +DEFINE_DQUOT_EVENT(xfs_dqattach_found); +DEFINE_DQUOT_EVENT(xfs_dqattach_get); +DEFINE_DQUOT_EVENT(xfs_dqinit); +DEFINE_DQUOT_EVENT(xfs_dqreuse); +DEFINE_DQUOT_EVENT(xfs_dqalloc); +DEFINE_DQUOT_EVENT(xfs_dqtobp_read); +DEFINE_DQUOT_EVENT(xfs_dqread); +DEFINE_DQUOT_EVENT(xfs_dqread_fail); +DEFINE_DQUOT_EVENT(xfs_dqlookup_found); +DEFINE_DQUOT_EVENT(xfs_dqlookup_want); +DEFINE_DQUOT_EVENT(xfs_dqlookup_freelist); +DEFINE_DQUOT_EVENT(xfs_dqlookup_done); +DEFINE_DQUOT_EVENT(xfs_dqget_hit); +DEFINE_DQUOT_EVENT(xfs_dqget_miss); +DEFINE_DQUOT_EVENT(xfs_dqput); +DEFINE_DQUOT_EVENT(xfs_dqput_wait); +DEFINE_DQUOT_EVENT(xfs_dqput_free); +DEFINE_DQUOT_EVENT(xfs_dqrele); +DEFINE_DQUOT_EVENT(xfs_dqflush); +DEFINE_DQUOT_EVENT(xfs_dqflush_force); +DEFINE_DQUOT_EVENT(xfs_dqflush_done); + +DECLARE_EVENT_CLASS(xfs_loggrant_class, + TP_PROTO(struct log *log, struct xlog_ticket *tic), + TP_ARGS(log, tic), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned, trans_type) + __field(char, ocnt) + __field(char, cnt) + __field(int, curr_res) + __field(int, unit_res) + __field(unsigned int, flags) + __field(int, reserveq) + __field(int, writeq) + __field(int, grant_reserve_cycle) + __field(int, grant_reserve_bytes) + __field(int, grant_write_cycle) + __field(int, grant_write_bytes) + __field(int, curr_cycle) + __field(int, curr_block) + __field(xfs_lsn_t, tail_lsn) + ), + TP_fast_assign( + __entry->dev = log->l_mp->m_super->s_dev; + __entry->trans_type = tic->t_trans_type; + __entry->ocnt = tic->t_ocnt; + __entry->cnt = tic->t_cnt; + __entry->curr_res = tic->t_curr_res; + __entry->unit_res = tic->t_unit_res; + __entry->flags = tic->t_flags; + __entry->reserveq = list_empty(&log->l_reserveq); + __entry->writeq = list_empty(&log->l_writeq); + xlog_crack_grant_head(&log->l_grant_reserve_head, + &__entry->grant_reserve_cycle, + &__entry->grant_reserve_bytes); + xlog_crack_grant_head(&log->l_grant_write_head, + &__entry->grant_write_cycle, + &__entry->grant_write_bytes); + __entry->curr_cycle = log->l_curr_cycle; + __entry->curr_block = log->l_curr_block; + __entry->tail_lsn = atomic64_read(&log->l_tail_lsn); + ), + TP_printk("dev %d:%d type %s t_ocnt %u t_cnt %u t_curr_res %u " + "t_unit_res %u t_flags %s reserveq %s " + "writeq %s grant_reserve_cycle %d " + "grant_reserve_bytes %d grant_write_cycle %d " + "grant_write_bytes %d curr_cycle %d curr_block %d " + "tail_cycle %d tail_block %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __print_symbolic(__entry->trans_type, XFS_TRANS_TYPES), + __entry->ocnt, + __entry->cnt, + __entry->curr_res, + __entry->unit_res, + __print_flags(__entry->flags, "|", XLOG_TIC_FLAGS), + __entry->reserveq ? "empty" : "active", + __entry->writeq ? "empty" : "active", + __entry->grant_reserve_cycle, + __entry->grant_reserve_bytes, + __entry->grant_write_cycle, + __entry->grant_write_bytes, + __entry->curr_cycle, + __entry->curr_block, + CYCLE_LSN(__entry->tail_lsn), + BLOCK_LSN(__entry->tail_lsn) + ) +) + +#define DEFINE_LOGGRANT_EVENT(name) \ +DEFINE_EVENT(xfs_loggrant_class, name, \ + TP_PROTO(struct log *log, struct xlog_ticket *tic), \ + TP_ARGS(log, tic)) +DEFINE_LOGGRANT_EVENT(xfs_log_done_nonperm); +DEFINE_LOGGRANT_EVENT(xfs_log_done_perm); +DEFINE_LOGGRANT_EVENT(xfs_log_reserve); +DEFINE_LOGGRANT_EVENT(xfs_log_umount_write); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_enter); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_exit); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_error); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_sleep1); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake1); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_sleep2); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake2); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake_up); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_enter); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_exit); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_error); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_sleep1); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake1); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_sleep2); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake2); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake_up); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_enter); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_exit); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_sub); +DEFINE_LOGGRANT_EVENT(xfs_log_ungrant_enter); +DEFINE_LOGGRANT_EVENT(xfs_log_ungrant_exit); +DEFINE_LOGGRANT_EVENT(xfs_log_ungrant_sub); + +DECLARE_EVENT_CLASS(xfs_file_class, + TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset, int flags), + TP_ARGS(ip, count, offset, flags), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(xfs_fsize_t, size) + __field(xfs_fsize_t, new_size) + __field(loff_t, offset) + __field(size_t, count) + __field(int, flags) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->size = ip->i_d.di_size; + __entry->new_size = ip->i_new_size; + __entry->offset = offset; + __entry->count = count; + __entry->flags = flags; + ), + TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx " + "offset 0x%llx count 0x%zx ioflags %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->size, + __entry->new_size, + __entry->offset, + __entry->count, + __print_flags(__entry->flags, "|", XFS_IO_FLAGS)) +) + +#define DEFINE_RW_EVENT(name) \ +DEFINE_EVENT(xfs_file_class, name, \ + TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset, int flags), \ + TP_ARGS(ip, count, offset, flags)) +DEFINE_RW_EVENT(xfs_file_read); +DEFINE_RW_EVENT(xfs_file_buffered_write); +DEFINE_RW_EVENT(xfs_file_direct_write); +DEFINE_RW_EVENT(xfs_file_splice_read); +DEFINE_RW_EVENT(xfs_file_splice_write); + +DECLARE_EVENT_CLASS(xfs_page_class, + TP_PROTO(struct inode *inode, struct page *page, unsigned long off), + TP_ARGS(inode, page, off), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(pgoff_t, pgoff) + __field(loff_t, size) + __field(unsigned long, offset) + __field(int, delalloc) + __field(int, unwritten) + ), + TP_fast_assign( + int delalloc = -1, unwritten = -1; + + if (page_has_buffers(page)) + xfs_count_page_state(page, &delalloc, &unwritten); + __entry->dev = inode->i_sb->s_dev; + __entry->ino = XFS_I(inode)->i_ino; + __entry->pgoff = page_offset(page); + __entry->size = i_size_read(inode); + __entry->offset = off; + __entry->delalloc = delalloc; + __entry->unwritten = unwritten; + ), + TP_printk("dev %d:%d ino 0x%llx pgoff 0x%lx size 0x%llx offset %lx " + "delalloc %d unwritten %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->pgoff, + __entry->size, + __entry->offset, + __entry->delalloc, + __entry->unwritten) +) + +#define DEFINE_PAGE_EVENT(name) \ +DEFINE_EVENT(xfs_page_class, name, \ + TP_PROTO(struct inode *inode, struct page *page, unsigned long off), \ + TP_ARGS(inode, page, off)) +DEFINE_PAGE_EVENT(xfs_writepage); +DEFINE_PAGE_EVENT(xfs_releasepage); +DEFINE_PAGE_EVENT(xfs_invalidatepage); + +DECLARE_EVENT_CLASS(xfs_imap_class, + TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count, + int type, struct xfs_bmbt_irec *irec), + TP_ARGS(ip, offset, count, type, irec), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(loff_t, size) + __field(loff_t, new_size) + __field(loff_t, offset) + __field(size_t, count) + __field(int, type) + __field(xfs_fileoff_t, startoff) + __field(xfs_fsblock_t, startblock) + __field(xfs_filblks_t, blockcount) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->size = ip->i_d.di_size; + __entry->new_size = ip->i_new_size; + __entry->offset = offset; + __entry->count = count; + __entry->type = type; + __entry->startoff = irec ? irec->br_startoff : 0; + __entry->startblock = irec ? irec->br_startblock : 0; + __entry->blockcount = irec ? irec->br_blockcount : 0; + ), + TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx " + "offset 0x%llx count %zd type %s " + "startoff 0x%llx startblock %lld blockcount 0x%llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->size, + __entry->new_size, + __entry->offset, + __entry->count, + __print_symbolic(__entry->type, XFS_IO_TYPES), + __entry->startoff, + (__int64_t)__entry->startblock, + __entry->blockcount) +) + +#define DEFINE_IOMAP_EVENT(name) \ +DEFINE_EVENT(xfs_imap_class, name, \ + TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count, \ + int type, struct xfs_bmbt_irec *irec), \ + TP_ARGS(ip, offset, count, type, irec)) +DEFINE_IOMAP_EVENT(xfs_map_blocks_found); +DEFINE_IOMAP_EVENT(xfs_map_blocks_alloc); +DEFINE_IOMAP_EVENT(xfs_get_blocks_found); +DEFINE_IOMAP_EVENT(xfs_get_blocks_alloc); + +DECLARE_EVENT_CLASS(xfs_simple_io_class, + TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count), + TP_ARGS(ip, offset, count), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(loff_t, isize) + __field(loff_t, disize) + __field(loff_t, new_size) + __field(loff_t, offset) + __field(size_t, count) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->isize = ip->i_size; + __entry->disize = ip->i_d.di_size; + __entry->new_size = ip->i_new_size; + __entry->offset = offset; + __entry->count = count; + ), + TP_printk("dev %d:%d ino 0x%llx isize 0x%llx disize 0x%llx new_size 0x%llx " + "offset 0x%llx count %zd", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->isize, + __entry->disize, + __entry->new_size, + __entry->offset, + __entry->count) +); + +#define DEFINE_SIMPLE_IO_EVENT(name) \ +DEFINE_EVENT(xfs_simple_io_class, name, \ + TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count), \ + TP_ARGS(ip, offset, count)) +DEFINE_SIMPLE_IO_EVENT(xfs_delalloc_enospc); +DEFINE_SIMPLE_IO_EVENT(xfs_unwritten_convert); +DEFINE_SIMPLE_IO_EVENT(xfs_get_blocks_notfound); +DEFINE_SIMPLE_IO_EVENT(xfs_setfilesize); + +DECLARE_EVENT_CLASS(xfs_itrunc_class, + TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size), + TP_ARGS(ip, new_size), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(xfs_fsize_t, size) + __field(xfs_fsize_t, new_size) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->size = ip->i_d.di_size; + __entry->new_size = new_size; + ), + TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->size, + __entry->new_size) +) + +#define DEFINE_ITRUNC_EVENT(name) \ +DEFINE_EVENT(xfs_itrunc_class, name, \ + TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size), \ + TP_ARGS(ip, new_size)) +DEFINE_ITRUNC_EVENT(xfs_itruncate_data_start); +DEFINE_ITRUNC_EVENT(xfs_itruncate_data_end); + +TRACE_EVENT(xfs_pagecache_inval, + TP_PROTO(struct xfs_inode *ip, xfs_off_t start, xfs_off_t finish), + TP_ARGS(ip, start, finish), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(xfs_fsize_t, size) + __field(xfs_off_t, start) + __field(xfs_off_t, finish) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->size = ip->i_d.di_size; + __entry->start = start; + __entry->finish = finish; + ), + TP_printk("dev %d:%d ino 0x%llx size 0x%llx start 0x%llx finish 0x%llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->size, + __entry->start, + __entry->finish) +); + +TRACE_EVENT(xfs_bunmap, + TP_PROTO(struct xfs_inode *ip, xfs_fileoff_t bno, xfs_filblks_t len, + int flags, unsigned long caller_ip), + TP_ARGS(ip, bno, len, flags, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(xfs_fsize_t, size) + __field(xfs_fileoff_t, bno) + __field(xfs_filblks_t, len) + __field(unsigned long, caller_ip) + __field(int, flags) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->size = ip->i_d.di_size; + __entry->bno = bno; + __entry->len = len; + __entry->caller_ip = caller_ip; + __entry->flags = flags; + ), + TP_printk("dev %d:%d ino 0x%llx size 0x%llx bno 0x%llx len 0x%llx" + "flags %s caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->size, + __entry->bno, + __entry->len, + __print_flags(__entry->flags, "|", XFS_BMAPI_FLAGS), + (void *)__entry->caller_ip) + +); + +DECLARE_EVENT_CLASS(xfs_busy_class, + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, + xfs_agblock_t agbno, xfs_extlen_t len), + TP_ARGS(mp, agno, agbno, len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, len) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = agno; + __entry->agbno = agbno; + __entry->len = len; + ), + TP_printk("dev %d:%d agno %u agbno %u len %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->agbno, + __entry->len) +); +#define DEFINE_BUSY_EVENT(name) \ +DEFINE_EVENT(xfs_busy_class, name, \ + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \ + xfs_agblock_t agbno, xfs_extlen_t len), \ + TP_ARGS(mp, agno, agbno, len)) +DEFINE_BUSY_EVENT(xfs_alloc_busy); +DEFINE_BUSY_EVENT(xfs_alloc_busy_enomem); +DEFINE_BUSY_EVENT(xfs_alloc_busy_force); +DEFINE_BUSY_EVENT(xfs_alloc_busy_reuse); +DEFINE_BUSY_EVENT(xfs_alloc_busy_clear); + +TRACE_EVENT(xfs_alloc_busy_trim, + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, + xfs_agblock_t agbno, xfs_extlen_t len, + xfs_agblock_t tbno, xfs_extlen_t tlen), + TP_ARGS(mp, agno, agbno, len, tbno, tlen), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, len) + __field(xfs_agblock_t, tbno) + __field(xfs_extlen_t, tlen) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = agno; + __entry->agbno = agbno; + __entry->len = len; + __entry->tbno = tbno; + __entry->tlen = tlen; + ), + TP_printk("dev %d:%d agno %u agbno %u len %u tbno %u tlen %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->agbno, + __entry->len, + __entry->tbno, + __entry->tlen) +); + +TRACE_EVENT(xfs_trans_commit_lsn, + TP_PROTO(struct xfs_trans *trans), + TP_ARGS(trans), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(struct xfs_trans *, tp) + __field(xfs_lsn_t, lsn) + ), + TP_fast_assign( + __entry->dev = trans->t_mountp->m_super->s_dev; + __entry->tp = trans; + __entry->lsn = trans->t_commit_lsn; + ), + TP_printk("dev %d:%d trans 0x%p commit_lsn 0x%llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->tp, + __entry->lsn) +); + +TRACE_EVENT(xfs_agf, + TP_PROTO(struct xfs_mount *mp, struct xfs_agf *agf, int flags, + unsigned long caller_ip), + TP_ARGS(mp, agf, flags, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(int, flags) + __field(__u32, length) + __field(__u32, bno_root) + __field(__u32, cnt_root) + __field(__u32, bno_level) + __field(__u32, cnt_level) + __field(__u32, flfirst) + __field(__u32, fllast) + __field(__u32, flcount) + __field(__u32, freeblks) + __field(__u32, longest) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = be32_to_cpu(agf->agf_seqno), + __entry->flags = flags; + __entry->length = be32_to_cpu(agf->agf_length), + __entry->bno_root = be32_to_cpu(agf->agf_roots[XFS_BTNUM_BNO]), + __entry->cnt_root = be32_to_cpu(agf->agf_roots[XFS_BTNUM_CNT]), + __entry->bno_level = + be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]), + __entry->cnt_level = + be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNT]), + __entry->flfirst = be32_to_cpu(agf->agf_flfirst), + __entry->fllast = be32_to_cpu(agf->agf_fllast), + __entry->flcount = be32_to_cpu(agf->agf_flcount), + __entry->freeblks = be32_to_cpu(agf->agf_freeblks), + __entry->longest = be32_to_cpu(agf->agf_longest); + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d agno %u flags %s length %u roots b %u c %u " + "levels b %u c %u flfirst %u fllast %u flcount %u " + "freeblks %u longest %u caller %pf", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __print_flags(__entry->flags, "|", XFS_AGF_FLAGS), + __entry->length, + __entry->bno_root, + __entry->cnt_root, + __entry->bno_level, + __entry->cnt_level, + __entry->flfirst, + __entry->fllast, + __entry->flcount, + __entry->freeblks, + __entry->longest, + (void *)__entry->caller_ip) +); + +TRACE_EVENT(xfs_free_extent, + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno, + xfs_extlen_t len, bool isfl, int haveleft, int haveright), + TP_ARGS(mp, agno, agbno, len, isfl, haveleft, haveright), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, len) + __field(int, isfl) + __field(int, haveleft) + __field(int, haveright) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = agno; + __entry->agbno = agbno; + __entry->len = len; + __entry->isfl = isfl; + __entry->haveleft = haveleft; + __entry->haveright = haveright; + ), + TP_printk("dev %d:%d agno %u agbno %u len %u isfl %d %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->agbno, + __entry->len, + __entry->isfl, + __entry->haveleft ? + (__entry->haveright ? "both" : "left") : + (__entry->haveright ? "right" : "none")) + +); + +DECLARE_EVENT_CLASS(xfs_alloc_class, + TP_PROTO(struct xfs_alloc_arg *args), + TP_ARGS(args), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, minlen) + __field(xfs_extlen_t, maxlen) + __field(xfs_extlen_t, mod) + __field(xfs_extlen_t, prod) + __field(xfs_extlen_t, minleft) + __field(xfs_extlen_t, total) + __field(xfs_extlen_t, alignment) + __field(xfs_extlen_t, minalignslop) + __field(xfs_extlen_t, len) + __field(short, type) + __field(short, otype) + __field(char, wasdel) + __field(char, wasfromfl) + __field(char, isfl) + __field(char, userdata) + __field(xfs_fsblock_t, firstblock) + ), + TP_fast_assign( + __entry->dev = args->mp->m_super->s_dev; + __entry->agno = args->agno; + __entry->agbno = args->agbno; + __entry->minlen = args->minlen; + __entry->maxlen = args->maxlen; + __entry->mod = args->mod; + __entry->prod = args->prod; + __entry->minleft = args->minleft; + __entry->total = args->total; + __entry->alignment = args->alignment; + __entry->minalignslop = args->minalignslop; + __entry->len = args->len; + __entry->type = args->type; + __entry->otype = args->otype; + __entry->wasdel = args->wasdel; + __entry->wasfromfl = args->wasfromfl; + __entry->isfl = args->isfl; + __entry->userdata = args->userdata; + __entry->firstblock = args->firstblock; + ), + TP_printk("dev %d:%d agno %u agbno %u minlen %u maxlen %u mod %u " + "prod %u minleft %u total %u alignment %u minalignslop %u " + "len %u type %s otype %s wasdel %d wasfromfl %d isfl %d " + "userdata %d firstblock 0x%llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->agbno, + __entry->minlen, + __entry->maxlen, + __entry->mod, + __entry->prod, + __entry->minleft, + __entry->total, + __entry->alignment, + __entry->minalignslop, + __entry->len, + __print_symbolic(__entry->type, XFS_ALLOC_TYPES), + __print_symbolic(__entry->otype, XFS_ALLOC_TYPES), + __entry->wasdel, + __entry->wasfromfl, + __entry->isfl, + __entry->userdata, + (unsigned long long)__entry->firstblock) +) + +#define DEFINE_ALLOC_EVENT(name) \ +DEFINE_EVENT(xfs_alloc_class, name, \ + TP_PROTO(struct xfs_alloc_arg *args), \ + TP_ARGS(args)) +DEFINE_ALLOC_EVENT(xfs_alloc_exact_done); +DEFINE_ALLOC_EVENT(xfs_alloc_exact_notfound); +DEFINE_ALLOC_EVENT(xfs_alloc_exact_error); +DEFINE_ALLOC_EVENT(xfs_alloc_near_nominleft); +DEFINE_ALLOC_EVENT(xfs_alloc_near_first); +DEFINE_ALLOC_EVENT(xfs_alloc_near_greater); +DEFINE_ALLOC_EVENT(xfs_alloc_near_lesser); +DEFINE_ALLOC_EVENT(xfs_alloc_near_error); +DEFINE_ALLOC_EVENT(xfs_alloc_near_noentry); +DEFINE_ALLOC_EVENT(xfs_alloc_near_busy); +DEFINE_ALLOC_EVENT(xfs_alloc_size_neither); +DEFINE_ALLOC_EVENT(xfs_alloc_size_noentry); +DEFINE_ALLOC_EVENT(xfs_alloc_size_nominleft); +DEFINE_ALLOC_EVENT(xfs_alloc_size_done); +DEFINE_ALLOC_EVENT(xfs_alloc_size_error); +DEFINE_ALLOC_EVENT(xfs_alloc_size_busy); +DEFINE_ALLOC_EVENT(xfs_alloc_small_freelist); +DEFINE_ALLOC_EVENT(xfs_alloc_small_notenough); +DEFINE_ALLOC_EVENT(xfs_alloc_small_done); +DEFINE_ALLOC_EVENT(xfs_alloc_small_error); +DEFINE_ALLOC_EVENT(xfs_alloc_vextent_badargs); +DEFINE_ALLOC_EVENT(xfs_alloc_vextent_nofix); +DEFINE_ALLOC_EVENT(xfs_alloc_vextent_noagbp); +DEFINE_ALLOC_EVENT(xfs_alloc_vextent_loopfailed); +DEFINE_ALLOC_EVENT(xfs_alloc_vextent_allfailed); + +DECLARE_EVENT_CLASS(xfs_dir2_class, + TP_PROTO(struct xfs_da_args *args), + TP_ARGS(args), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __dynamic_array(char, name, args->namelen) + __field(int, namelen) + __field(xfs_dahash_t, hashval) + __field(xfs_ino_t, inumber) + __field(int, op_flags) + ), + TP_fast_assign( + __entry->dev = VFS_I(args->dp)->i_sb->s_dev; + __entry->ino = args->dp->i_ino; + if (args->namelen) + memcpy(__get_str(name), args->name, args->namelen); + __entry->namelen = args->namelen; + __entry->hashval = args->hashval; + __entry->inumber = args->inumber; + __entry->op_flags = args->op_flags; + ), + TP_printk("dev %d:%d ino 0x%llx name %.*s namelen %d hashval 0x%x " + "inumber 0x%llx op_flags %s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->namelen, + __entry->namelen ? __get_str(name) : NULL, + __entry->namelen, + __entry->hashval, + __entry->inumber, + __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS)) +) + +#define DEFINE_DIR2_EVENT(name) \ +DEFINE_EVENT(xfs_dir2_class, name, \ + TP_PROTO(struct xfs_da_args *args), \ + TP_ARGS(args)) +DEFINE_DIR2_EVENT(xfs_dir2_sf_addname); +DEFINE_DIR2_EVENT(xfs_dir2_sf_create); +DEFINE_DIR2_EVENT(xfs_dir2_sf_lookup); +DEFINE_DIR2_EVENT(xfs_dir2_sf_replace); +DEFINE_DIR2_EVENT(xfs_dir2_sf_removename); +DEFINE_DIR2_EVENT(xfs_dir2_sf_toino4); +DEFINE_DIR2_EVENT(xfs_dir2_sf_toino8); +DEFINE_DIR2_EVENT(xfs_dir2_sf_to_block); +DEFINE_DIR2_EVENT(xfs_dir2_block_addname); +DEFINE_DIR2_EVENT(xfs_dir2_block_lookup); +DEFINE_DIR2_EVENT(xfs_dir2_block_replace); +DEFINE_DIR2_EVENT(xfs_dir2_block_removename); +DEFINE_DIR2_EVENT(xfs_dir2_block_to_sf); +DEFINE_DIR2_EVENT(xfs_dir2_block_to_leaf); +DEFINE_DIR2_EVENT(xfs_dir2_leaf_addname); +DEFINE_DIR2_EVENT(xfs_dir2_leaf_lookup); +DEFINE_DIR2_EVENT(xfs_dir2_leaf_replace); +DEFINE_DIR2_EVENT(xfs_dir2_leaf_removename); +DEFINE_DIR2_EVENT(xfs_dir2_leaf_to_block); +DEFINE_DIR2_EVENT(xfs_dir2_leaf_to_node); +DEFINE_DIR2_EVENT(xfs_dir2_node_addname); +DEFINE_DIR2_EVENT(xfs_dir2_node_lookup); +DEFINE_DIR2_EVENT(xfs_dir2_node_replace); +DEFINE_DIR2_EVENT(xfs_dir2_node_removename); +DEFINE_DIR2_EVENT(xfs_dir2_node_to_leaf); + +DECLARE_EVENT_CLASS(xfs_dir2_space_class, + TP_PROTO(struct xfs_da_args *args, int idx), + TP_ARGS(args, idx), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(int, op_flags) + __field(int, idx) + ), + TP_fast_assign( + __entry->dev = VFS_I(args->dp)->i_sb->s_dev; + __entry->ino = args->dp->i_ino; + __entry->op_flags = args->op_flags; + __entry->idx = idx; + ), + TP_printk("dev %d:%d ino 0x%llx op_flags %s index %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS), + __entry->idx) +) + +#define DEFINE_DIR2_SPACE_EVENT(name) \ +DEFINE_EVENT(xfs_dir2_space_class, name, \ + TP_PROTO(struct xfs_da_args *args, int idx), \ + TP_ARGS(args, idx)) +DEFINE_DIR2_SPACE_EVENT(xfs_dir2_leafn_add); +DEFINE_DIR2_SPACE_EVENT(xfs_dir2_leafn_remove); +DEFINE_DIR2_SPACE_EVENT(xfs_dir2_grow_inode); +DEFINE_DIR2_SPACE_EVENT(xfs_dir2_shrink_inode); + +TRACE_EVENT(xfs_dir2_leafn_moveents, + TP_PROTO(struct xfs_da_args *args, int src_idx, int dst_idx, int count), + TP_ARGS(args, src_idx, dst_idx, count), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(int, op_flags) + __field(int, src_idx) + __field(int, dst_idx) + __field(int, count) + ), + TP_fast_assign( + __entry->dev = VFS_I(args->dp)->i_sb->s_dev; + __entry->ino = args->dp->i_ino; + __entry->op_flags = args->op_flags; + __entry->src_idx = src_idx; + __entry->dst_idx = dst_idx; + __entry->count = count; + ), + TP_printk("dev %d:%d ino 0x%llx op_flags %s " + "src_idx %d dst_idx %d count %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS), + __entry->src_idx, + __entry->dst_idx, + __entry->count) +); + +#define XFS_SWAPEXT_INODES \ + { 0, "target" }, \ + { 1, "temp" } + +#define XFS_INODE_FORMAT_STR \ + { 0, "invalid" }, \ + { 1, "local" }, \ + { 2, "extent" }, \ + { 3, "btree" } + +DECLARE_EVENT_CLASS(xfs_swap_extent_class, + TP_PROTO(struct xfs_inode *ip, int which), + TP_ARGS(ip, which), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(int, which) + __field(xfs_ino_t, ino) + __field(int, format) + __field(int, nex) + __field(int, max_nex) + __field(int, broot_size) + __field(int, fork_off) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->which = which; + __entry->ino = ip->i_ino; + __entry->format = ip->i_d.di_format; + __entry->nex = ip->i_d.di_nextents; + __entry->max_nex = ip->i_df.if_ext_max; + __entry->broot_size = ip->i_df.if_broot_bytes; + __entry->fork_off = XFS_IFORK_BOFF(ip); + ), + TP_printk("dev %d:%d ino 0x%llx (%s), %s format, num_extents %d, " + "Max in-fork extents %d, broot size %d, fork offset %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_symbolic(__entry->which, XFS_SWAPEXT_INODES), + __print_symbolic(__entry->format, XFS_INODE_FORMAT_STR), + __entry->nex, + __entry->max_nex, + __entry->broot_size, + __entry->fork_off) +) + +#define DEFINE_SWAPEXT_EVENT(name) \ +DEFINE_EVENT(xfs_swap_extent_class, name, \ + TP_PROTO(struct xfs_inode *ip, int which), \ + TP_ARGS(ip, which)) + +DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before); +DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after); + +DECLARE_EVENT_CLASS(xfs_log_recover_item_class, + TP_PROTO(struct log *log, struct xlog_recover *trans, + struct xlog_recover_item *item, int pass), + TP_ARGS(log, trans, item, pass), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned long, item) + __field(xlog_tid_t, tid) + __field(int, type) + __field(int, pass) + __field(int, count) + __field(int, total) + ), + TP_fast_assign( + __entry->dev = log->l_mp->m_super->s_dev; + __entry->item = (unsigned long)item; + __entry->tid = trans->r_log_tid; + __entry->type = ITEM_TYPE(item); + __entry->pass = pass; + __entry->count = item->ri_cnt; + __entry->total = item->ri_total; + ), + TP_printk("dev %d:%d trans 0x%x, pass %d, item 0x%p, item type %s " + "item region count/total %d/%d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->tid, + __entry->pass, + (void *)__entry->item, + __print_symbolic(__entry->type, XFS_LI_TYPE_DESC), + __entry->count, + __entry->total) +) + +#define DEFINE_LOG_RECOVER_ITEM(name) \ +DEFINE_EVENT(xfs_log_recover_item_class, name, \ + TP_PROTO(struct log *log, struct xlog_recover *trans, \ + struct xlog_recover_item *item, int pass), \ + TP_ARGS(log, trans, item, pass)) + +DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_add); +DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_add_cont); +DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_reorder_head); +DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_reorder_tail); +DEFINE_LOG_RECOVER_ITEM(xfs_log_recover_item_recover); + +DECLARE_EVENT_CLASS(xfs_log_recover_buf_item_class, + TP_PROTO(struct log *log, struct xfs_buf_log_format *buf_f), + TP_ARGS(log, buf_f), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(__int64_t, blkno) + __field(unsigned short, len) + __field(unsigned short, flags) + __field(unsigned short, size) + __field(unsigned int, map_size) + ), + TP_fast_assign( + __entry->dev = log->l_mp->m_super->s_dev; + __entry->blkno = buf_f->blf_blkno; + __entry->len = buf_f->blf_len; + __entry->flags = buf_f->blf_flags; + __entry->size = buf_f->blf_size; + __entry->map_size = buf_f->blf_map_size; + ), + TP_printk("dev %d:%d blkno 0x%llx, len %u, flags 0x%x, size %d, " + "map_size %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->blkno, + __entry->len, + __entry->flags, + __entry->size, + __entry->map_size) +) + +#define DEFINE_LOG_RECOVER_BUF_ITEM(name) \ +DEFINE_EVENT(xfs_log_recover_buf_item_class, name, \ + TP_PROTO(struct log *log, struct xfs_buf_log_format *buf_f), \ + TP_ARGS(log, buf_f)) + +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_not_cancel); +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_cancel); +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_cancel_add); +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_cancel_ref_inc); +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_recover); +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_inode_buf); +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_reg_buf); +DEFINE_LOG_RECOVER_BUF_ITEM(xfs_log_recover_buf_dquot_buf); + +DECLARE_EVENT_CLASS(xfs_log_recover_ino_item_class, + TP_PROTO(struct log *log, struct xfs_inode_log_format *in_f), + TP_ARGS(log, in_f), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(unsigned short, size) + __field(int, fields) + __field(unsigned short, asize) + __field(unsigned short, dsize) + __field(__int64_t, blkno) + __field(int, len) + __field(int, boffset) + ), + TP_fast_assign( + __entry->dev = log->l_mp->m_super->s_dev; + __entry->ino = in_f->ilf_ino; + __entry->size = in_f->ilf_size; + __entry->fields = in_f->ilf_fields; + __entry->asize = in_f->ilf_asize; + __entry->dsize = in_f->ilf_dsize; + __entry->blkno = in_f->ilf_blkno; + __entry->len = in_f->ilf_len; + __entry->boffset = in_f->ilf_boffset; + ), + TP_printk("dev %d:%d ino 0x%llx, size %u, fields 0x%x, asize %d, " + "dsize %d, blkno 0x%llx, len %d, boffset %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->size, + __entry->fields, + __entry->asize, + __entry->dsize, + __entry->blkno, + __entry->len, + __entry->boffset) +) +#define DEFINE_LOG_RECOVER_INO_ITEM(name) \ +DEFINE_EVENT(xfs_log_recover_ino_item_class, name, \ + TP_PROTO(struct log *log, struct xfs_inode_log_format *in_f), \ + TP_ARGS(log, in_f)) + +DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_recover); +DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_cancel); +DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_skip); + +DECLARE_EVENT_CLASS(xfs_discard_class, + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, + xfs_agblock_t agbno, xfs_extlen_t len), + TP_ARGS(mp, agno, agbno, len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, len) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = agno; + __entry->agbno = agbno; + __entry->len = len; + ), + TP_printk("dev %d:%d agno %u agbno %u len %u\n", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->agbno, + __entry->len) +) + +#define DEFINE_DISCARD_EVENT(name) \ +DEFINE_EVENT(xfs_discard_class, name, \ + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \ + xfs_agblock_t agbno, xfs_extlen_t len), \ + TP_ARGS(mp, agno, agbno, len)) +DEFINE_DISCARD_EVENT(xfs_discard_extent); +DEFINE_DISCARD_EVENT(xfs_discard_toosmall); +DEFINE_DISCARD_EVENT(xfs_discard_exclude); +DEFINE_DISCARD_EVENT(xfs_discard_busy); + +#endif /* _TRACE_XFS_H */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#define TRACE_INCLUDE_FILE xfs_trace +#include diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c new file mode 100644 index 000000000000..4d00ee67792d --- /dev/null +++ b/fs/xfs/xfs_trans_dquot.c @@ -0,0 +1,890 @@ +/* + * Copyright (c) 2000-2002 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_alloc.h" +#include "xfs_quota.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_itable.h" +#include "xfs_bmap.h" +#include "xfs_rtalloc.h" +#include "xfs_error.h" +#include "xfs_attr.h" +#include "xfs_buf_item.h" +#include "xfs_trans_priv.h" +#include "xfs_qm.h" + +STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); + +/* + * Add the locked dquot to the transaction. + * The dquot must be locked, and it cannot be associated with any + * transaction. + */ +void +xfs_trans_dqjoin( + xfs_trans_t *tp, + xfs_dquot_t *dqp) +{ + ASSERT(dqp->q_transp != tp); + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + ASSERT(dqp->q_logitem.qli_dquot == dqp); + + /* + * Get a log_item_desc to point at the new item. + */ + xfs_trans_add_item(tp, &dqp->q_logitem.qli_item); + + /* + * Initialize d_transp so we can later determine if this dquot is + * associated with this transaction. + */ + dqp->q_transp = tp; +} + + +/* + * This is called to mark the dquot as needing + * to be logged when the transaction is committed. The dquot must + * already be associated with the given transaction. + * Note that it marks the entire transaction as dirty. In the ordinary + * case, this gets called via xfs_trans_commit, after the transaction + * is already dirty. However, there's nothing stop this from getting + * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY + * flag. + */ +void +xfs_trans_log_dquot( + xfs_trans_t *tp, + xfs_dquot_t *dqp) +{ + ASSERT(dqp->q_transp == tp); + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + + tp->t_flags |= XFS_TRANS_DIRTY; + dqp->q_logitem.qli_item.li_desc->lid_flags |= XFS_LID_DIRTY; +} + +/* + * Carry forward whatever is left of the quota blk reservation to + * the spanky new transaction + */ +void +xfs_trans_dup_dqinfo( + xfs_trans_t *otp, + xfs_trans_t *ntp) +{ + xfs_dqtrx_t *oq, *nq; + int i,j; + xfs_dqtrx_t *oqa, *nqa; + + if (!otp->t_dqinfo) + return; + + xfs_trans_alloc_dqinfo(ntp); + oqa = otp->t_dqinfo->dqa_usrdquots; + nqa = ntp->t_dqinfo->dqa_usrdquots; + + /* + * Because the quota blk reservation is carried forward, + * it is also necessary to carry forward the DQ_DIRTY flag. + */ + if(otp->t_flags & XFS_TRANS_DQ_DIRTY) + ntp->t_flags |= XFS_TRANS_DQ_DIRTY; + + for (j = 0; j < 2; j++) { + for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { + if (oqa[i].qt_dquot == NULL) + break; + oq = &oqa[i]; + nq = &nqa[i]; + + nq->qt_dquot = oq->qt_dquot; + nq->qt_bcount_delta = nq->qt_icount_delta = 0; + nq->qt_rtbcount_delta = 0; + + /* + * Transfer whatever is left of the reservations. + */ + nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used; + oq->qt_blk_res = oq->qt_blk_res_used; + + nq->qt_rtblk_res = oq->qt_rtblk_res - + oq->qt_rtblk_res_used; + oq->qt_rtblk_res = oq->qt_rtblk_res_used; + + nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used; + oq->qt_ino_res = oq->qt_ino_res_used; + + } + oqa = otp->t_dqinfo->dqa_grpdquots; + nqa = ntp->t_dqinfo->dqa_grpdquots; + } +} + +/* + * Wrap around mod_dquot to account for both user and group quotas. + */ +void +xfs_trans_mod_dquot_byino( + xfs_trans_t *tp, + xfs_inode_t *ip, + uint field, + long delta) +{ + xfs_mount_t *mp = tp->t_mountp; + + if (!XFS_IS_QUOTA_RUNNING(mp) || + !XFS_IS_QUOTA_ON(mp) || + ip->i_ino == mp->m_sb.sb_uquotino || + ip->i_ino == mp->m_sb.sb_gquotino) + return; + + if (tp->t_dqinfo == NULL) + xfs_trans_alloc_dqinfo(tp); + + if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) + (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); + if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot) + (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); +} + +STATIC xfs_dqtrx_t * +xfs_trans_get_dqtrx( + xfs_trans_t *tp, + xfs_dquot_t *dqp) +{ + int i; + xfs_dqtrx_t *qa; + + qa = XFS_QM_ISUDQ(dqp) ? + tp->t_dqinfo->dqa_usrdquots : tp->t_dqinfo->dqa_grpdquots; + + for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { + if (qa[i].qt_dquot == NULL || + qa[i].qt_dquot == dqp) + return &qa[i]; + } + + return NULL; +} + +/* + * Make the changes in the transaction structure. + * The moral equivalent to xfs_trans_mod_sb(). + * We don't touch any fields in the dquot, so we don't care + * if it's locked or not (most of the time it won't be). + */ +void +xfs_trans_mod_dquot( + xfs_trans_t *tp, + xfs_dquot_t *dqp, + uint field, + long delta) +{ + xfs_dqtrx_t *qtrx; + + ASSERT(tp); + ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp)); + qtrx = NULL; + + if (tp->t_dqinfo == NULL) + xfs_trans_alloc_dqinfo(tp); + /* + * Find either the first free slot or the slot that belongs + * to this dquot. + */ + qtrx = xfs_trans_get_dqtrx(tp, dqp); + ASSERT(qtrx); + if (qtrx->qt_dquot == NULL) + qtrx->qt_dquot = dqp; + + switch (field) { + + /* + * regular disk blk reservation + */ + case XFS_TRANS_DQ_RES_BLKS: + qtrx->qt_blk_res += (ulong)delta; + break; + + /* + * inode reservation + */ + case XFS_TRANS_DQ_RES_INOS: + qtrx->qt_ino_res += (ulong)delta; + break; + + /* + * disk blocks used. + */ + case XFS_TRANS_DQ_BCOUNT: + if (qtrx->qt_blk_res && delta > 0) { + qtrx->qt_blk_res_used += (ulong)delta; + ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used); + } + qtrx->qt_bcount_delta += delta; + break; + + case XFS_TRANS_DQ_DELBCOUNT: + qtrx->qt_delbcnt_delta += delta; + break; + + /* + * Inode Count + */ + case XFS_TRANS_DQ_ICOUNT: + if (qtrx->qt_ino_res && delta > 0) { + qtrx->qt_ino_res_used += (ulong)delta; + ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); + } + qtrx->qt_icount_delta += delta; + break; + + /* + * rtblk reservation + */ + case XFS_TRANS_DQ_RES_RTBLKS: + qtrx->qt_rtblk_res += (ulong)delta; + break; + + /* + * rtblk count + */ + case XFS_TRANS_DQ_RTBCOUNT: + if (qtrx->qt_rtblk_res && delta > 0) { + qtrx->qt_rtblk_res_used += (ulong)delta; + ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used); + } + qtrx->qt_rtbcount_delta += delta; + break; + + case XFS_TRANS_DQ_DELRTBCOUNT: + qtrx->qt_delrtb_delta += delta; + break; + + default: + ASSERT(0); + } + tp->t_flags |= XFS_TRANS_DQ_DIRTY; +} + + +/* + * Given an array of dqtrx structures, lock all the dquots associated + * and join them to the transaction, provided they have been modified. + * We know that the highest number of dquots (of one type - usr OR grp), + * involved in a transaction is 2 and that both usr and grp combined - 3. + * So, we don't attempt to make this very generic. + */ +STATIC void +xfs_trans_dqlockedjoin( + xfs_trans_t *tp, + xfs_dqtrx_t *q) +{ + ASSERT(q[0].qt_dquot != NULL); + if (q[1].qt_dquot == NULL) { + xfs_dqlock(q[0].qt_dquot); + xfs_trans_dqjoin(tp, q[0].qt_dquot); + } else { + ASSERT(XFS_QM_TRANS_MAXDQS == 2); + xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot); + xfs_trans_dqjoin(tp, q[0].qt_dquot); + xfs_trans_dqjoin(tp, q[1].qt_dquot); + } +} + + +/* + * Called by xfs_trans_commit() and similar in spirit to + * xfs_trans_apply_sb_deltas(). + * Go thru all the dquots belonging to this transaction and modify the + * INCORE dquot to reflect the actual usages. + * Unreserve just the reservations done by this transaction. + * dquot is still left locked at exit. + */ +void +xfs_trans_apply_dquot_deltas( + xfs_trans_t *tp) +{ + int i, j; + xfs_dquot_t *dqp; + xfs_dqtrx_t *qtrx, *qa; + xfs_disk_dquot_t *d; + long totalbdelta; + long totalrtbdelta; + + if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY)) + return; + + ASSERT(tp->t_dqinfo); + qa = tp->t_dqinfo->dqa_usrdquots; + for (j = 0; j < 2; j++) { + if (qa[0].qt_dquot == NULL) { + qa = tp->t_dqinfo->dqa_grpdquots; + continue; + } + + /* + * Lock all of the dquots and join them to the transaction. + */ + xfs_trans_dqlockedjoin(tp, qa); + + for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { + qtrx = &qa[i]; + /* + * The array of dquots is filled + * sequentially, not sparsely. + */ + if ((dqp = qtrx->qt_dquot) == NULL) + break; + + ASSERT(XFS_DQ_IS_LOCKED(dqp)); + ASSERT(dqp->q_transp == tp); + + /* + * adjust the actual number of blocks used + */ + d = &dqp->q_core; + + /* + * The issue here is - sometimes we don't make a blkquota + * reservation intentionally to be fair to users + * (when the amount is small). On the other hand, + * delayed allocs do make reservations, but that's + * outside of a transaction, so we have no + * idea how much was really reserved. + * So, here we've accumulated delayed allocation blks and + * non-delay blks. The assumption is that the + * delayed ones are always reserved (outside of a + * transaction), and the others may or may not have + * quota reservations. + */ + totalbdelta = qtrx->qt_bcount_delta + + qtrx->qt_delbcnt_delta; + totalrtbdelta = qtrx->qt_rtbcount_delta + + qtrx->qt_delrtb_delta; +#ifdef DEBUG + if (totalbdelta < 0) + ASSERT(be64_to_cpu(d->d_bcount) >= + -totalbdelta); + + if (totalrtbdelta < 0) + ASSERT(be64_to_cpu(d->d_rtbcount) >= + -totalrtbdelta); + + if (qtrx->qt_icount_delta < 0) + ASSERT(be64_to_cpu(d->d_icount) >= + -qtrx->qt_icount_delta); +#endif + if (totalbdelta) + be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta); + + if (qtrx->qt_icount_delta) + be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta); + + if (totalrtbdelta) + be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta); + + /* + * Get any default limits in use. + * Start/reset the timer(s) if needed. + */ + if (d->d_id) { + xfs_qm_adjust_dqlimits(tp->t_mountp, d); + xfs_qm_adjust_dqtimers(tp->t_mountp, d); + } + + dqp->dq_flags |= XFS_DQ_DIRTY; + /* + * add this to the list of items to get logged + */ + xfs_trans_log_dquot(tp, dqp); + /* + * Take off what's left of the original reservation. + * In case of delayed allocations, there's no + * reservation that a transaction structure knows of. + */ + if (qtrx->qt_blk_res != 0) { + if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) { + if (qtrx->qt_blk_res > + qtrx->qt_blk_res_used) + dqp->q_res_bcount -= (xfs_qcnt_t) + (qtrx->qt_blk_res - + qtrx->qt_blk_res_used); + else + dqp->q_res_bcount -= (xfs_qcnt_t) + (qtrx->qt_blk_res_used - + qtrx->qt_blk_res); + } + } else { + /* + * These blks were never reserved, either inside + * a transaction or outside one (in a delayed + * allocation). Also, this isn't always a + * negative number since we sometimes + * deliberately skip quota reservations. + */ + if (qtrx->qt_bcount_delta) { + dqp->q_res_bcount += + (xfs_qcnt_t)qtrx->qt_bcount_delta; + } + } + /* + * Adjust the RT reservation. + */ + if (qtrx->qt_rtblk_res != 0) { + if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) { + if (qtrx->qt_rtblk_res > + qtrx->qt_rtblk_res_used) + dqp->q_res_rtbcount -= (xfs_qcnt_t) + (qtrx->qt_rtblk_res - + qtrx->qt_rtblk_res_used); + else + dqp->q_res_rtbcount -= (xfs_qcnt_t) + (qtrx->qt_rtblk_res_used - + qtrx->qt_rtblk_res); + } + } else { + if (qtrx->qt_rtbcount_delta) + dqp->q_res_rtbcount += + (xfs_qcnt_t)qtrx->qt_rtbcount_delta; + } + + /* + * Adjust the inode reservation. + */ + if (qtrx->qt_ino_res != 0) { + ASSERT(qtrx->qt_ino_res >= + qtrx->qt_ino_res_used); + if (qtrx->qt_ino_res > qtrx->qt_ino_res_used) + dqp->q_res_icount -= (xfs_qcnt_t) + (qtrx->qt_ino_res - + qtrx->qt_ino_res_used); + } else { + if (qtrx->qt_icount_delta) + dqp->q_res_icount += + (xfs_qcnt_t)qtrx->qt_icount_delta; + } + + ASSERT(dqp->q_res_bcount >= + be64_to_cpu(dqp->q_core.d_bcount)); + ASSERT(dqp->q_res_icount >= + be64_to_cpu(dqp->q_core.d_icount)); + ASSERT(dqp->q_res_rtbcount >= + be64_to_cpu(dqp->q_core.d_rtbcount)); + } + /* + * Do the group quotas next + */ + qa = tp->t_dqinfo->dqa_grpdquots; + } +} + +/* + * Release the reservations, and adjust the dquots accordingly. + * This is called only when the transaction is being aborted. If by + * any chance we have done dquot modifications incore (ie. deltas) already, + * we simply throw those away, since that's the expected behavior + * when a transaction is curtailed without a commit. + */ +void +xfs_trans_unreserve_and_mod_dquots( + xfs_trans_t *tp) +{ + int i, j; + xfs_dquot_t *dqp; + xfs_dqtrx_t *qtrx, *qa; + boolean_t locked; + + if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY)) + return; + + qa = tp->t_dqinfo->dqa_usrdquots; + + for (j = 0; j < 2; j++) { + for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { + qtrx = &qa[i]; + /* + * We assume that the array of dquots is filled + * sequentially, not sparsely. + */ + if ((dqp = qtrx->qt_dquot) == NULL) + break; + /* + * Unreserve the original reservation. We don't care + * about the number of blocks used field, or deltas. + * Also we don't bother to zero the fields. + */ + locked = B_FALSE; + if (qtrx->qt_blk_res) { + xfs_dqlock(dqp); + locked = B_TRUE; + dqp->q_res_bcount -= + (xfs_qcnt_t)qtrx->qt_blk_res; + } + if (qtrx->qt_ino_res) { + if (!locked) { + xfs_dqlock(dqp); + locked = B_TRUE; + } + dqp->q_res_icount -= + (xfs_qcnt_t)qtrx->qt_ino_res; + } + + if (qtrx->qt_rtblk_res) { + if (!locked) { + xfs_dqlock(dqp); + locked = B_TRUE; + } + dqp->q_res_rtbcount -= + (xfs_qcnt_t)qtrx->qt_rtblk_res; + } + if (locked) + xfs_dqunlock(dqp); + + } + qa = tp->t_dqinfo->dqa_grpdquots; + } +} + +STATIC void +xfs_quota_warn( + struct xfs_mount *mp, + struct xfs_dquot *dqp, + int type) +{ + /* no warnings for project quotas - we just return ENOSPC later */ + if (dqp->dq_flags & XFS_DQ_PROJ) + return; + quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA, + be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev, + type); +} + +/* + * This reserves disk blocks and inodes against a dquot. + * Flags indicate if the dquot is to be locked here and also + * if the blk reservation is for RT or regular blocks. + * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. + */ +STATIC int +xfs_trans_dqresv( + xfs_trans_t *tp, + xfs_mount_t *mp, + xfs_dquot_t *dqp, + long nblks, + long ninos, + uint flags) +{ + xfs_qcnt_t hardlimit; + xfs_qcnt_t softlimit; + time_t timer; + xfs_qwarncnt_t warns; + xfs_qwarncnt_t warnlimit; + xfs_qcnt_t count; + xfs_qcnt_t *resbcountp; + xfs_quotainfo_t *q = mp->m_quotainfo; + + + xfs_dqlock(dqp); + + if (flags & XFS_TRANS_DQ_RES_BLKS) { + hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit); + if (!hardlimit) + hardlimit = q->qi_bhardlimit; + softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit); + if (!softlimit) + softlimit = q->qi_bsoftlimit; + timer = be32_to_cpu(dqp->q_core.d_btimer); + warns = be16_to_cpu(dqp->q_core.d_bwarns); + warnlimit = dqp->q_mount->m_quotainfo->qi_bwarnlimit; + resbcountp = &dqp->q_res_bcount; + } else { + ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS); + hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit); + if (!hardlimit) + hardlimit = q->qi_rtbhardlimit; + softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit); + if (!softlimit) + softlimit = q->qi_rtbsoftlimit; + timer = be32_to_cpu(dqp->q_core.d_rtbtimer); + warns = be16_to_cpu(dqp->q_core.d_rtbwarns); + warnlimit = dqp->q_mount->m_quotainfo->qi_rtbwarnlimit; + resbcountp = &dqp->q_res_rtbcount; + } + + if ((flags & XFS_QMOPT_FORCE_RES) == 0 && + dqp->q_core.d_id && + ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) || + (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) && + (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) { + if (nblks > 0) { + /* + * dquot is locked already. See if we'd go over the + * hardlimit or exceed the timelimit if we allocate + * nblks. + */ + if (hardlimit > 0ULL && + hardlimit <= nblks + *resbcountp) { + xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN); + goto error_return; + } + if (softlimit > 0ULL && + softlimit <= nblks + *resbcountp) { + if ((timer != 0 && get_seconds() > timer) || + (warns != 0 && warns >= warnlimit)) { + xfs_quota_warn(mp, dqp, + QUOTA_NL_BSOFTLONGWARN); + goto error_return; + } + + xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN); + } + } + if (ninos > 0) { + count = be64_to_cpu(dqp->q_core.d_icount); + timer = be32_to_cpu(dqp->q_core.d_itimer); + warns = be16_to_cpu(dqp->q_core.d_iwarns); + warnlimit = dqp->q_mount->m_quotainfo->qi_iwarnlimit; + hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit); + if (!hardlimit) + hardlimit = q->qi_ihardlimit; + softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit); + if (!softlimit) + softlimit = q->qi_isoftlimit; + + if (hardlimit > 0ULL && count >= hardlimit) { + xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN); + goto error_return; + } + if (softlimit > 0ULL && count >= softlimit) { + if ((timer != 0 && get_seconds() > timer) || + (warns != 0 && warns >= warnlimit)) { + xfs_quota_warn(mp, dqp, + QUOTA_NL_ISOFTLONGWARN); + goto error_return; + } + xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN); + } + } + } + + /* + * Change the reservation, but not the actual usage. + * Note that q_res_bcount = q_core.d_bcount + resv + */ + (*resbcountp) += (xfs_qcnt_t)nblks; + if (ninos != 0) + dqp->q_res_icount += (xfs_qcnt_t)ninos; + + /* + * note the reservation amt in the trans struct too, + * so that the transaction knows how much was reserved by + * it against this particular dquot. + * We don't do this when we are reserving for a delayed allocation, + * because we don't have the luxury of a transaction envelope then. + */ + if (tp) { + ASSERT(tp->t_dqinfo); + ASSERT(flags & XFS_QMOPT_RESBLK_MASK); + if (nblks != 0) + xfs_trans_mod_dquot(tp, dqp, + flags & XFS_QMOPT_RESBLK_MASK, + nblks); + if (ninos != 0) + xfs_trans_mod_dquot(tp, dqp, + XFS_TRANS_DQ_RES_INOS, + ninos); + } + ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount)); + ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount)); + ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount)); + + xfs_dqunlock(dqp); + return 0; + +error_return: + xfs_dqunlock(dqp); + if (flags & XFS_QMOPT_ENOSPC) + return ENOSPC; + return EDQUOT; +} + + +/* + * Given dquot(s), make disk block and/or inode reservations against them. + * The fact that this does the reservation against both the usr and + * grp/prj quotas is important, because this follows a both-or-nothing + * approach. + * + * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. + * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota. + * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks + * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks + * dquots are unlocked on return, if they were not locked by caller. + */ +int +xfs_trans_reserve_quota_bydquots( + xfs_trans_t *tp, + xfs_mount_t *mp, + xfs_dquot_t *udqp, + xfs_dquot_t *gdqp, + long nblks, + long ninos, + uint flags) +{ + int resvd = 0, error; + + if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) + return 0; + + if (tp && tp->t_dqinfo == NULL) + xfs_trans_alloc_dqinfo(tp); + + ASSERT(flags & XFS_QMOPT_RESBLK_MASK); + + if (udqp) { + error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, + (flags & ~XFS_QMOPT_ENOSPC)); + if (error) + return error; + resvd = 1; + } + + if (gdqp) { + error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags); + if (error) { + /* + * can't do it, so backout previous reservation + */ + if (resvd) { + flags |= XFS_QMOPT_FORCE_RES; + xfs_trans_dqresv(tp, mp, udqp, + -nblks, -ninos, flags); + } + return error; + } + } + + /* + * Didn't change anything critical, so, no need to log + */ + return 0; +} + + +/* + * Lock the dquot and change the reservation if we can. + * This doesn't change the actual usage, just the reservation. + * The inode sent in is locked. + */ +int +xfs_trans_reserve_quota_nblks( + struct xfs_trans *tp, + struct xfs_inode *ip, + long nblks, + long ninos, + uint flags) +{ + struct xfs_mount *mp = ip->i_mount; + + if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) + return 0; + if (XFS_IS_PQUOTA_ON(mp)) + flags |= XFS_QMOPT_ENOSPC; + + ASSERT(ip->i_ino != mp->m_sb.sb_uquotino); + ASSERT(ip->i_ino != mp->m_sb.sb_gquotino); + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == + XFS_TRANS_DQ_RES_RTBLKS || + (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == + XFS_TRANS_DQ_RES_BLKS); + + /* + * Reserve nblks against these dquots, with trans as the mediator. + */ + return xfs_trans_reserve_quota_bydquots(tp, mp, + ip->i_udquot, ip->i_gdquot, + nblks, ninos, flags); +} + +/* + * This routine is called to allocate a quotaoff log item. + */ +xfs_qoff_logitem_t * +xfs_trans_get_qoff_item( + xfs_trans_t *tp, + xfs_qoff_logitem_t *startqoff, + uint flags) +{ + xfs_qoff_logitem_t *q; + + ASSERT(tp != NULL); + + q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags); + ASSERT(q != NULL); + + /* + * Get a log_item_desc to point at the new item. + */ + xfs_trans_add_item(tp, &q->qql_item); + return q; +} + + +/* + * This is called to mark the quotaoff logitem as needing + * to be logged when the transaction is committed. The logitem must + * already be associated with the given transaction. + */ +void +xfs_trans_log_quotaoff_item( + xfs_trans_t *tp, + xfs_qoff_logitem_t *qlp) +{ + tp->t_flags |= XFS_TRANS_DIRTY; + qlp->qql_item.li_desc->lid_flags |= XFS_LID_DIRTY; +} + +STATIC void +xfs_trans_alloc_dqinfo( + xfs_trans_t *tp) +{ + tp->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP); +} + +void +xfs_trans_free_dqinfo( + xfs_trans_t *tp) +{ + if (!tp->t_dqinfo) + return; + kmem_zone_free(xfs_Gqm->qm_dqtrxzone, tp->t_dqinfo); + tp->t_dqinfo = NULL; +} diff --git a/fs/xfs/xfs_vnode.h b/fs/xfs/xfs_vnode.h new file mode 100644 index 000000000000..7c220b4227bc --- /dev/null +++ b/fs/xfs/xfs_vnode.h @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_VNODE_H__ +#define __XFS_VNODE_H__ + +#include "xfs_fs.h" + +struct file; +struct xfs_inode; +struct xfs_iomap; +struct attrlist_cursor_kern; + +/* + * Return values for xfs_inactive. A return value of + * VN_INACTIVE_NOCACHE implies that the file system behavior + * has disassociated its state and bhv_desc_t from the vnode. + */ +#define VN_INACTIVE_CACHE 0 +#define VN_INACTIVE_NOCACHE 1 + +/* + * Flags for read/write calls - same values as IRIX + */ +#define IO_ISDIRECT 0x00004 /* bypass page cache */ +#define IO_INVIS 0x00020 /* don't update inode timestamps */ + +#define XFS_IO_FLAGS \ + { IO_ISDIRECT, "DIRECT" }, \ + { IO_INVIS, "INVIS"} + +/* + * Flush/Invalidate options for vop_toss/flush/flushinval_pages. + */ +#define FI_NONE 0 /* none */ +#define FI_REMAPF 1 /* Do a remapf prior to the operation */ +#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. + Prevent VM access to the pages until + the operation completes. */ + +/* + * Some useful predicates. + */ +#define VN_MAPPED(vp) mapping_mapped(vp->i_mapping) +#define VN_CACHED(vp) (vp->i_mapping->nrpages) +#define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \ + PAGECACHE_TAG_DIRTY) + + +#endif /* __XFS_VNODE_H__ */ diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c new file mode 100644 index 000000000000..87d3e03878c8 --- /dev/null +++ b/fs/xfs/xfs_xattr.c @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2008 Christoph Hellwig. + * Portions Copyright (C) 2000-2008 Silicon Graphics, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "xfs.h" +#include "xfs_da_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_inode.h" +#include "xfs_attr.h" +#include "xfs_attr_leaf.h" +#include "xfs_acl.h" +#include "xfs_vnodeops.h" + +#include +#include + + +static int +xfs_xattr_get(struct dentry *dentry, const char *name, + void *value, size_t size, int xflags) +{ + struct xfs_inode *ip = XFS_I(dentry->d_inode); + int error, asize = size; + + if (strcmp(name, "") == 0) + return -EINVAL; + + /* Convert Linux syscall to XFS internal ATTR flags */ + if (!size) { + xflags |= ATTR_KERNOVAL; + value = NULL; + } + + error = -xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags); + if (error) + return error; + return asize; +} + +static int +xfs_xattr_set(struct dentry *dentry, const char *name, const void *value, + size_t size, int flags, int xflags) +{ + struct xfs_inode *ip = XFS_I(dentry->d_inode); + + if (strcmp(name, "") == 0) + return -EINVAL; + + /* Convert Linux syscall to XFS internal ATTR flags */ + if (flags & XATTR_CREATE) + xflags |= ATTR_CREATE; + if (flags & XATTR_REPLACE) + xflags |= ATTR_REPLACE; + + if (!value) + return -xfs_attr_remove(ip, (unsigned char *)name, xflags); + return -xfs_attr_set(ip, (unsigned char *)name, + (void *)value, size, xflags); +} + +static const struct xattr_handler xfs_xattr_user_handler = { + .prefix = XATTR_USER_PREFIX, + .flags = 0, /* no flags implies user namespace */ + .get = xfs_xattr_get, + .set = xfs_xattr_set, +}; + +static const struct xattr_handler xfs_xattr_trusted_handler = { + .prefix = XATTR_TRUSTED_PREFIX, + .flags = ATTR_ROOT, + .get = xfs_xattr_get, + .set = xfs_xattr_set, +}; + +static const struct xattr_handler xfs_xattr_security_handler = { + .prefix = XATTR_SECURITY_PREFIX, + .flags = ATTR_SECURE, + .get = xfs_xattr_get, + .set = xfs_xattr_set, +}; + +const struct xattr_handler *xfs_xattr_handlers[] = { + &xfs_xattr_user_handler, + &xfs_xattr_trusted_handler, + &xfs_xattr_security_handler, +#ifdef CONFIG_XFS_POSIX_ACL + &xfs_xattr_acl_access_handler, + &xfs_xattr_acl_default_handler, +#endif + NULL +}; + +static unsigned int xfs_xattr_prefix_len(int flags) +{ + if (flags & XFS_ATTR_SECURE) + return sizeof("security"); + else if (flags & XFS_ATTR_ROOT) + return sizeof("trusted"); + else + return sizeof("user"); +} + +static const char *xfs_xattr_prefix(int flags) +{ + if (flags & XFS_ATTR_SECURE) + return xfs_xattr_security_handler.prefix; + else if (flags & XFS_ATTR_ROOT) + return xfs_xattr_trusted_handler.prefix; + else + return xfs_xattr_user_handler.prefix; +} + +static int +xfs_xattr_put_listent( + struct xfs_attr_list_context *context, + int flags, + unsigned char *name, + int namelen, + int valuelen, + unsigned char *value) +{ + unsigned int prefix_len = xfs_xattr_prefix_len(flags); + char *offset; + int arraytop; + + ASSERT(context->count >= 0); + + /* + * Only show root namespace entries if we are actually allowed to + * see them. + */ + if ((flags & XFS_ATTR_ROOT) && !capable(CAP_SYS_ADMIN)) + return 0; + + arraytop = context->count + prefix_len + namelen + 1; + if (arraytop > context->firstu) { + context->count = -1; /* insufficient space */ + return 1; + } + offset = (char *)context->alist + context->count; + strncpy(offset, xfs_xattr_prefix(flags), prefix_len); + offset += prefix_len; + strncpy(offset, (char *)name, namelen); /* real name */ + offset += namelen; + *offset = '\0'; + context->count += prefix_len + namelen + 1; + return 0; +} + +static int +xfs_xattr_put_listent_sizes( + struct xfs_attr_list_context *context, + int flags, + unsigned char *name, + int namelen, + int valuelen, + unsigned char *value) +{ + context->count += xfs_xattr_prefix_len(flags) + namelen + 1; + return 0; +} + +static int +list_one_attr(const char *name, const size_t len, void *data, + size_t size, ssize_t *result) +{ + char *p = data + *result; + + *result += len; + if (!size) + return 0; + if (*result > size) + return -ERANGE; + + strcpy(p, name); + return 0; +} + +ssize_t +xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size) +{ + struct xfs_attr_list_context context; + struct attrlist_cursor_kern cursor = { 0 }; + struct inode *inode = dentry->d_inode; + int error; + + /* + * First read the regular on-disk attributes. + */ + memset(&context, 0, sizeof(context)); + context.dp = XFS_I(inode); + context.cursor = &cursor; + context.resynch = 1; + context.alist = data; + context.bufsize = size; + context.firstu = context.bufsize; + + if (size) + context.put_listent = xfs_xattr_put_listent; + else + context.put_listent = xfs_xattr_put_listent_sizes; + + xfs_attr_list_int(&context); + if (context.count < 0) + return -ERANGE; + + /* + * Then add the two synthetic ACL attributes. + */ + if (posix_acl_access_exists(inode)) { + error = list_one_attr(POSIX_ACL_XATTR_ACCESS, + strlen(POSIX_ACL_XATTR_ACCESS) + 1, + data, size, &context.count); + if (error) + return error; + } + + if (posix_acl_default_exists(inode)) { + error = list_one_attr(POSIX_ACL_XATTR_DEFAULT, + strlen(POSIX_ACL_XATTR_DEFAULT) + 1, + data, size, &context.count); + if (error) + return error; + } + + return context.count; +} diff --git a/kernel/sysctl_binary.c b/kernel/sysctl_binary.c index 3b8e028b9601..e8bffbe2ba4b 100644 --- a/kernel/sysctl_binary.c +++ b/kernel/sysctl_binary.c @@ -1,6 +1,6 @@ #include #include -#include "../fs/xfs/linux-2.6/xfs_sysctl.h" +#include "../fs/xfs/xfs_sysctl.h" #include #include #include diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c index 4e4932a7b360..362da653813d 100644 --- a/kernel/sysctl_check.c +++ b/kernel/sysctl_check.c @@ -1,6 +1,6 @@ #include #include -#include "../fs/xfs/linux-2.6/xfs_sysctl.h" +#include "../fs/xfs/xfs_sysctl.h" #include #include #include -- cgit v1.2.3 From b6bede3b4cdfbd188557ab50fceec2e91d295edf Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 14 Aug 2011 17:13:00 +0000 Subject: xfs: fix tracing builds inside the source tree The code really requires the current source directory to be in the header search path. We already do this if building with an object tree separate from the source, but it needs to be added manually if building inside the source. The cflags addition for it accidentally got removed when collapsing the xfs directory structure. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Alex Elder --- fs/xfs/Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/xfs') diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index ffce328309b8..427a4e82a588 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -16,6 +16,8 @@ # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # +ccflags-y += -I$(src) # needed for trace events + ccflags-$(CONFIG_XFS_DEBUG) += -g obj-$(CONFIG_XFS_FS) += xfs.o -- cgit v1.2.3 From 242d621964dd8641df53f7d51d4c6ead655cc5a6 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 24 Aug 2011 05:57:51 +0000 Subject: xfs: deprecate the nodelaylog mount option Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Alex Elder --- Documentation/feature-removal-schedule.txt | 8 ++++++++ fs/xfs/xfs_super.c | 2 ++ 2 files changed, 10 insertions(+) (limited to 'fs/xfs') diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index c4a6e148732a..4dc465477665 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -592,3 +592,11 @@ Why: In 3.0, we can now autodetect internal 3G device and already have interface that was used by acer-wmi driver. It will replaced by information log when acer-wmi initial. Who: Lee, Chun-Yi + +---------------------------- +What: The XFS nodelaylog mount option +When: 3.3 +Why: The delaylog mode that has been the default since 2.6.39 has proven + stable, and the old code is in the way of additional improvements in + the log code. +Who: Christoph Hellwig diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 9a72dda58bd0..c1b022f20d35 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -356,6 +356,8 @@ xfs_parseargs( mp->m_flags |= XFS_MOUNT_DELAYLOG; } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { mp->m_flags &= ~XFS_MOUNT_DELAYLOG; + xfs_warn(mp, + "nodelaylog is deprecated and will be removed in Linux 3.3"); } else if (!strcmp(this_char, MNTOPT_DISCARD)) { mp->m_flags |= XFS_MOUNT_DISCARD; } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { -- cgit v1.2.3 From 866e4ed77448a0c311e1b055eb72ea05423fd799 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sat, 27 Aug 2011 05:57:44 +0000 Subject: xfs: fix xfs_mark_inode_dirty during umount During umount we do not add a dirty inode to the lru and wait for it to become clean first, but force writeback of data and metadata with I_WILL_FREE set. Currently there is no way for XFS to detect that the inode has been redirtied for metadata operations, as we skip the mark_inode_dirty call during teardown. Fix this by setting i_update_core nanually in that case, so that the inode gets flushed during inode reclaim. Alternatively we could enable calling mark_inode_dirty for inodes in I_WILL_FREE state, and let the VFS dirty tracking handle this. I decided against this as we will get better I/O patterns from reclaim compared to the synchronous writeout in write_inode_now, and always marking the inode dirty in some way from xfs_mark_inode_dirty is a better safetly net in either case. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Alex Elder (cherry picked from commit da6742a5a4cc844a9982fdd936ddb537c0747856) Signed-off-by: Alex Elder --- fs/xfs/xfs_iops.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index b9c172b3fbbe..673704fab748 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -70,9 +70,8 @@ xfs_synchronize_times( } /* - * If the linux inode is valid, mark it dirty. - * Used when committing a dirty inode into a transaction so that - * the inode will get written back by the linux code + * If the linux inode is valid, mark it dirty, else mark the dirty state + * in the XFS inode to make sure we pick it up when reclaiming the inode. */ void xfs_mark_inode_dirty_sync( @@ -82,6 +81,10 @@ xfs_mark_inode_dirty_sync( if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) mark_inode_dirty_sync(inode); + else { + barrier(); + ip->i_update_core = 1; + } } void @@ -92,6 +95,11 @@ xfs_mark_inode_dirty( if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) mark_inode_dirty(inode); + else { + barrier(); + ip->i_update_core = 1; + } + } /* -- cgit v1.2.3 From 58d84c4ee0389ddeb86238d5d8359a982c9f7a5b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sat, 27 Aug 2011 05:57:55 +0000 Subject: xfs: fix ->write_inode return values Currently we always redirty an inode that was attempted to be written out synchronously but has been cleaned by an AIL pushed internall, which is rather bogus. Fix that by doing the i_update_core check early on and return 0 for it. Also include async calls for it, as doing any work for those is just as pointless. While we're at it also fix the sign for the EIO return in case of a filesystem shutdown, and fix the completely non-sensical locking around xfs_log_inode. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Alex Elder (cherry picked from commit 297db93bb74cf687510313eb235a7aec14d67e97) Signed-off-by: Alex Elder --- fs/xfs/xfs_super.c | 34 +++++++++------------------------- 1 file changed, 9 insertions(+), 25 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index c1b022f20d35..2366c54cc4fa 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -879,33 +879,17 @@ xfs_log_inode( struct xfs_trans *tp; int error; - xfs_iunlock(ip, XFS_ILOCK_SHARED); tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); - if (error) { xfs_trans_cancel(tp, 0); - /* we need to return with the lock hold shared */ - xfs_ilock(ip, XFS_ILOCK_SHARED); return error; } xfs_ilock(ip, XFS_ILOCK_EXCL); - - /* - * Note - it's possible that we might have pushed ourselves out of the - * way during trans_reserve which would flush the inode. But there's - * no guarantee that the inode buffer has actually gone out yet (it's - * delwri). Plus the buffer could be pinned anyway if it's part of - * an inode in another recent transaction. So we play it safe and - * fire off the transaction anyway. - */ - xfs_trans_ijoin(tp, ip); + xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - error = xfs_trans_commit(tp, 0); - xfs_ilock_demote(ip, XFS_ILOCK_EXCL); - - return error; + return xfs_trans_commit(tp, 0); } STATIC int @@ -920,7 +904,9 @@ xfs_fs_write_inode( trace_xfs_write_inode(ip); if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); + return -XFS_ERROR(EIO); + if (!ip->i_update_core) + return 0; if (wbc->sync_mode == WB_SYNC_ALL) { /* @@ -931,12 +917,10 @@ xfs_fs_write_inode( * of synchronous log foces dramatically. */ xfs_ioend_wait(ip); - xfs_ilock(ip, XFS_ILOCK_SHARED); - if (ip->i_update_core) { - error = xfs_log_inode(ip); - if (error) - goto out_unlock; - } + error = xfs_log_inode(ip); + if (error) + goto out; + return 0; } else { /* * We make this non-blocking if the inode is contended, return -- cgit v1.2.3 From 2d2422aebc037095f77551119f795449d29befed Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 13 Sep 2011 22:26:00 +0000 Subject: xfs: fix a use after free in xfs_end_io_direct_write There is a window in which the ioend that we call inode_dio_wake on in xfs_end_io_direct_write is already free. Fix this by storing the inode pointer in a local variable. This is a fix for the regression introduced in 3.1-rc by "fs: move inode_dio_done to the end_io handler". Signed-off-by: Christoph Hellwig Signed-off-by: Alex Elder --- fs/xfs/xfs_aops.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 63e971e2b837..8c37dde4c521 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1300,6 +1300,7 @@ xfs_end_io_direct_write( bool is_async) { struct xfs_ioend *ioend = iocb->private; + struct inode *inode = ioend->io_inode; /* * blockdev_direct_IO can return an error even after the I/O @@ -1331,7 +1332,7 @@ xfs_end_io_direct_write( } /* XXX: probably should move into the real I/O completion handler */ - inode_dio_done(ioend->io_inode); + inode_dio_done(inode); } STATIC ssize_t -- cgit v1.2.3