diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_bmap.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_bmap.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 8e2010d53b07..9390b7c8b5ef 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -3800,8 +3800,13 @@ xfs_bmap_btalloc( args.wasdel = ap->wasdel; args.isfl = 0; args.userdata = ap->userdata; - if ((error = xfs_alloc_vextent(&args))) + if (ap->userdata & XFS_ALLOC_USERDATA_ZERO) + args.ip = ap->ip; + + error = xfs_alloc_vextent(&args); + if (error) return error; + if (tryagain && args.fsbno == NULLFSBLOCK) { /* * Exact allocation failed. Now try with alignment @@ -4300,11 +4305,14 @@ xfs_bmapi_allocate( /* * Indicate if this is the first user data in the file, or just any - * user data. + * user data. And if it is userdata, indicate whether it needs to + * be initialised to zero during allocation. */ if (!(bma->flags & XFS_BMAPI_METADATA)) { bma->userdata = (bma->offset == 0) ? XFS_ALLOC_INITIAL_USER_DATA : XFS_ALLOC_USERDATA; + if (bma->flags & XFS_BMAPI_ZERO) + bma->userdata |= XFS_ALLOC_USERDATA_ZERO; } bma->minlen = (bma->flags & XFS_BMAPI_CONTIG) ? bma->length : 1; @@ -4419,6 +4427,17 @@ xfs_bmapi_convert_unwritten( mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN) ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN; + /* + * Before insertion into the bmbt, zero the range being converted + * if required. + */ + if (flags & XFS_BMAPI_ZERO) { + error = xfs_zero_extent(bma->ip, mval->br_startblock, + mval->br_blockcount); + if (error) + return error; + } + error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, &bma->idx, &bma->cur, mval, bma->firstblock, bma->flist, &tmp_logflags); @@ -4512,6 +4531,18 @@ xfs_bmapi_write( ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + /* zeroing is for currently only for data extents, not metadata */ + ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) != + (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)); + /* + * we can allocate unwritten extents or pre-zero allocated blocks, + * but it makes no sense to do both at once. This would result in + * zeroing the unwritten extent twice, but it still being an + * unwritten extent.... + */ + ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) != + (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)); + if (unlikely(XFS_TEST_ERROR( (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), |