f2fs: synchronize atomic write aborts

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To fix a race condition between atomic write aborts, I use the inode
lock and make COW inode to be re-usable thoroughout the whole
atomic file inode lifetime.

Reported-by: syzbot+823000d23b3400619f7c@syzkaller.appspotmail.com
Fixes: 3db1de0e58 ("f2fs: change the current atomic write way")
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Daeho Jeong 2023-02-09 10:18:19 -08:00 • committed by Jaegeuk Kim

parent 7e986855fe

commit a46bebd502

4 changed files with 38 additions and 22 deletions

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44

fs/f2fs/file.c

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11

fs/f2fs/inode.c

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3

fs/f2fs/segment.c

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2

fs/f2fs/super.c

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