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authorJan Kara <jack@suse.cz>2007-07-16 10:41:09 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 20:05:48 +0400
commit32c3773011a9b3522bd4abadc7fad8c27417119f (patch)
treec3a07aecbef3cdb66a4126e2822c69166aee1c97 /include
parent030703e49d4966bd348660e0fdc2699507efb82b (diff)
downloadlinux-32c3773011a9b3522bd4abadc7fad8c27417119f.tar.xz
ext4: fix deadlock in ext4_remount() and orphan list handling
ext4_orphan_add() and ext4_orphan_del() functions lock sb->s_lock with a transaction started with ext4_mark_recovery_complete() waits for a transaction holding sb->s_lock, thus leading to a possible deadlock. At the moment we call ext4_mark_recovery_complete() from ext4_remount() we have done all the work needed for remounting and thus we are safe to drop sb->s_lock before we wait for transactions to commit. Note that at this moment we are still guarded by s_umount lock against other remounts/umounts. Signed-off-by: Jan Kara <jack@suse.cz> Cc: Eric Sandeen <sandeen@sandeen.net> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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