From 2c334e12f957cd8c6bb66b4aa3f79848b7c33cab Mon Sep 17 00:00:00 2001 From: Darrick J. Wong Date: Mon, 26 Oct 2020 15:19:38 -0700 Subject: xfs: set xefi_discard when creating a deferred agfl free log intent item Make sure that we actually initialize xefi_discard when we're scheduling a deferred free of an AGFL block. This was (eventually) found by the UBSAN while I was banging on realtime rmap problems, but it exists in the upstream codebase. While we're at it, rearrange the structure to reduce the struct size from 64 to 56 bytes. Fixes: fcb762f5de2e ("xfs: add bmapi nodiscard flag") Signed-off-by: Darrick J. Wong Reviewed-by: Brian Foster --- fs/xfs/libxfs/xfs_alloc.c | 1 + fs/xfs/libxfs/xfs_bmap.h | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/xfs/libxfs') diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c index 852b536551b5..15640015be9d 100644 --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -2467,6 +2467,7 @@ xfs_defer_agfl_block( new->xefi_startblock = XFS_AGB_TO_FSB(mp, agno, agbno); new->xefi_blockcount = 1; new->xefi_oinfo = *oinfo; + new->xefi_skip_discard = false; trace_xfs_agfl_free_defer(mp, agno, 0, agbno, 1); diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h index e1bd484e5548..6747e97a7949 100644 --- a/fs/xfs/libxfs/xfs_bmap.h +++ b/fs/xfs/libxfs/xfs_bmap.h @@ -52,9 +52,9 @@ struct xfs_extent_free_item { xfs_fsblock_t xefi_startblock;/* starting fs block number */ xfs_extlen_t xefi_blockcount;/* number of blocks in extent */ + bool xefi_skip_discard; struct list_head xefi_list; struct xfs_owner_info xefi_oinfo; /* extent owner */ - bool xefi_skip_discard; }; #define XFS_BMAP_MAX_NMAP 4 -- cgit v1.2.3