Re: [PATCH v4 2/2] ext4: make sure fs error flag setted before clear journal error

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On 2023/3/1 19:59, Ye Bin wrote:
From: Ye Bin <yebin10@xxxxxxxxxx>

Now, jounral error number maybe cleared even though ext4_commit_super()
failed. This may lead to error flag miss, then fsck will miss to check
file system deeply.

Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>


Looks good to me.

Reviewed-by: Baokun Li <libaokun1@xxxxxxxxxx>


---
  fs/ext4/super.c | 6 ++++--
  1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 9df8fada2dce..7736c96d5a78 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -6152,11 +6152,13 @@ static int ext4_clear_journal_err(struct super_block *sb,
  		errstr = ext4_decode_error(sb, j_errno, nbuf);
  		ext4_warning(sb, "Filesystem error recorded "
  			     "from previous mount: %s", errstr);
-		ext4_warning(sb, "Marking fs in need of filesystem check.");
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
  		es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
-		ext4_commit_super(sb);
+		j_errno = ext4_commit_super(sb);
+		if (j_errno)
+			return j_errno;
+		ext4_warning(sb, "Marked fs in need of filesystem check.");
jbd2_journal_clear_err(journal);
  		jbd2_journal_update_sb_errno(journal);
--
With Best Regards,
Baokun Li
.



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