From: Chao Yu <chao@kernel.org>
Date: Mon, 9 Jan 2023 11:44:50 +0800
Subject: [PATCH] f2fs: clear atomic_write_task in f2fs_abort_atomic_write()
References: bsc#1012628
Patch-mainline: 6.2.5
Git-commit: 0e8d040bfa4c476d7d2a23119527c744c7de13cd

[ 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 <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/f2fs/segment.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index af305923..cf430f34 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;
 	}
 }
 
-- 
2.35.3