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xfs: fix iget usage in directory scrub [v24.5]

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In this series, we fix some problems with how the directory scrubber
 grabs child inodes.  First, we want to reduce EDEADLOCK returns by
 replacing fixed-iteration loops with interruptible trylock loops.
 Second, we add UNTRUSTED to the child iget call so that we can detect a
 dirent that points to an unallocated inode.  Third, we fix a bug where
 we weren't checking the inode pointed to by dotdot entries at all.
 
 Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Merge tag 'scrub-dir-iget-fixes-6.4_2023-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into guilt/xfs-for-next

xfs: fix iget usage in directory scrub [v24.5]

In this series, we fix some problems with how the directory scrubber
grabs child inodes.  First, we want to reduce EDEADLOCK returns by
replacing fixed-iteration loops with interruptible trylock loops.
Second, we add UNTRUSTED to the child iget call so that we can detect a
dirent that points to an unallocated inode.  Third, we fix a bug where
we weren't checking the inode pointed to by dotdot entries at all.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Dave Chinner 2023-04-14 07:10:21 +10:00 • committed by Dave Chinner
commit f697c2cc15
5 changed files with 497 additions and 217 deletions
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