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xfs: reload entire unlinked bucket lists

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The previous patch to reload unrecovered unlinked inodes when adding a
newly created inode to the unlinked list is missing a key piece of
functionality.  It doesn't handle the case that someone calls xfs_iget
on an inode that is not the last item in the incore list.  For example,
if at mount time the ondisk iunlink bucket looks like this:

AGI -> 7 -> 22 -> 3 -> NULL

None of these three inodes are cached in memory.  Now let's say that
someone tries to open inode 3 by handle.  We need to walk the list to
make sure that inodes 7 and 22 get loaded cold, and that the
i_prev_unlinked of inode 3 gets set to 22.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Darrick J. Wong 2023-09-11 08:39:07 -07:00
commit 83771c50e4
5 changed files with 144 additions and 0 deletions
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