Files
linux/fs/xfs
Darrick J. Wong b1a15c0551 xfs: revert "xfs: fix rmap key and record comparison functions"
[ Upstream commit eb8409071a ]

This reverts commit 6ff646b2ce.

Your maintainer committed a major braino in the rmap code by adding the
attr fork, bmbt, and unwritten extent usage bits into rmap record key
comparisons.  While XFS uses the usage bits *in the rmap records* for
cross-referencing metadata in xfs_scrub and xfs_repair, it only needs
the owner and offset information to distinguish between reverse mappings
of the same physical extent into the data fork of a file at multiple
offsets.  The other bits are not important for key comparisons for index
lookups, and never have been.

Eric Sandeen reports that this causes regressions in generic/299, so
undo this patch before it does more damage.

Reported-by: Eric Sandeen <sandeen@sandeen.net>
Fixes: 6ff646b2ce ("xfs: fix rmap key and record comparison functions")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-16 09:49:20 +09:00
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