ext4: hold s_fc_lock while during fast commit

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Leaving s_fc_lock in between during commit in ext4_fc_perform_commit()
function leaves room for subtle concurrency bugs where ext4_fc_del() may
delete an inode from the fast commit list, leaving list in an inconsistent
state.

Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20250508175908.1004880-10-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Harshad Shirwadkar 2025-05-08 17:59:08 +00:00 • committed by Theodore Ts'o

parent 12e64e7f85

commit 6593714d67

1 changed files with 13 additions and 31 deletions

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44

fs/ext4/fast_commit.c

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