[PATCH AUTOSEL 5.15 2/7] f2fs: set SBI_NEED_FSCK flag when inconsistent node block found

Sasha Levin
2021-11-26T02:32:12Z

From: Weichao Guo <guoweichao@oppo.com>

[ Upstream commit 6663b138ded1a59e630c9e605e42aa7fde490cdc ]

Inconsistent node block will cause a file fail to open or read,
which could make the user process crashes or stucks. Let's mark
SBI_NEED_FSCK flag to trigger a fix at next fsck time. After
unlinking the corrupted file, the user process could regenerate
a new one and work correctly.

Signed-off-by: Weichao Guo <guoweichao@oppo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/f2fs/node.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index e863136081b47..556fcd8457f3f 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1443,6 +1443,7 @@ static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
nid, nid_of_node(page), ino_of_node(page),
ofs_of_node(page), cpver_of_node(page),
next_blkaddr_of_node(page));
+ set_sbi_flag(sbi, SBI_NEED_FSCK);
err = -EINVAL;
out_err:
ClearPageUptodate(page);
--
2.33.0