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| author | Christoph Hellwig <hch@lst.de> | 2024-10-08 10:59:21 +0200 |
|---|---|---|
| committer | Carlos Maiolino <cem@kernel.org> | 2024-10-15 11:37:42 +0200 |
| commit | f6f91d290c8b9da6e671bd15f306ad2d0e635a04 (patch) | |
| tree | 9e70de234d7f2a6c8cac0a593ee8ea2871e6ec9a | |
| parent | xfs: set IOMAP_F_SHARED for all COW fork allocations (diff) | |
| download | linux-f6f91d290c8b9da6e671bd15f306ad2d0e635a04.tar.xz linux-f6f91d290c8b9da6e671bd15f306ad2d0e635a04.zip | |
xfs: punch delalloc extents from the COW fork for COW writes
When ->iomap_end is called on a short write to the COW fork it needs to
punch stale delalloc data from the COW fork and not the data fork.
Ensure that IOMAP_F_NEW is set for new COW fork allocations in
xfs_buffered_write_iomap_begin, and then use the IOMAP_F_SHARED flag
in xfs_buffered_write_delalloc_punch to decide which fork to punch.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
| -rw-r--r-- | fs/xfs/xfs_iomap.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 0317bbfeeb38..916531d9f83c 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -1196,7 +1196,7 @@ found_cow: imap.br_startoff - offset_fsb); } - iomap_flags = IOMAP_F_SHARED; + iomap_flags |= IOMAP_F_SHARED; seq = xfs_iomap_inode_sequence(ip, iomap_flags); xfs_iunlock(ip, lockmode); return xfs_bmbt_to_iomap(ip, iomap, &cmap, flags, iomap_flags, seq); @@ -1213,8 +1213,10 @@ xfs_buffered_write_delalloc_punch( loff_t length, struct iomap *iomap) { - xfs_bmap_punch_delalloc_range(XFS_I(inode), XFS_DATA_FORK, offset, - offset + length); + xfs_bmap_punch_delalloc_range(XFS_I(inode), + (iomap->flags & IOMAP_F_SHARED) ? + XFS_COW_FORK : XFS_DATA_FORK, + offset, offset + length); } static int |