From 3f53a6d1c390f1f0f2d41fb7a399217898a08fbd Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Mon, 9 Jan 2023 11:44:50 +0800 Subject: [PATCH] f2fs: clear atomic_write_task in f2fs_abort_atomic_write() BugLink: https://bugs.launchpad.net/bugs/2011430 [ Upstream commit 0e8d040bfa4c476d7d2a23119527c744c7de13cd ] Otherwise, last .atomic_write_task will be remained in structure f2fs_inode_info, resulting in aborting atomic_write accidentally in race case. Meanwhile, clear original_i_size as well. Fixes: 7a10f0177e11 ("f2fs: don't give partially written atomic data from process crash") Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/segment.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index af3059236f54..cf430f34d196 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -201,9 +201,12 @@ void f2fs_abort_atomic_write(struct inode *inode, bool clean) clear_inode_flag(inode, FI_ATOMIC_FILE); stat_dec_atomic_inode(inode); + F2FS_I(inode)->atomic_write_task = NULL; + if (clean) { truncate_inode_pages_final(inode->i_mapping); f2fs_i_size_write(inode, fi->original_i_size); + fi->original_i_size = 0; } } -- 2.39.5