writeback: Add asserts for adding freed inode to lists

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In the past we had several use-after-free issues with inodes getting
added to writeback lists after evict() removed them. These are painful
to debug so add some asserts to catch the problem earlier. The only
non-obvious change in the commit is that we need to tweak
redirty_tail_locked() to avoid triggering assertion in
inode_io_list_move_locked().

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20221212113633.29181-1-jack@suse.cz
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jan Kara 2022-12-12 12:36:33 +01:00 • committed by Jens Axboe

parent eb7081409f

commit a9438b44bc

1 changed files with 14 additions and 1 deletions

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fs/fs-writeback.c

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