linux-ext4 - [PATCH v3 1/2] ext4: commit super block if fs record error when journal record without error

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Date:   Tue, 14 Feb 2023 10:29:04 +0800
From:   Ye Bin <yebin@...weicloud.com>
To:     tytso@....edu, adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, jack@...e.cz,
        Ye Bin <yebin10@...wei.com>
Subject: [PATCH v3 1/2] ext4: commit super block if fs record error when journal record without error

From: Ye Bin <yebin10@...wei.com>

Now, 'es->s_state' maybe covered by recover journal. And journal errno
maybe not recorded in journal sb as IO error. ext4_update_super() only
update error information when 'sbi->s_add_error_count' large than zero.
Then 'EXT4_ERROR_FS' flag maybe lost.
To solve above issue commit error information after recover journal.

Signed-off-by: Ye Bin <yebin10@...wei.com>
---
 fs/ext4/super.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index dc3907dff13a..b94754ba8556 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5932,6 +5932,18 @@ static int ext4_load_journal(struct super_block *sb,
 		goto err_out;
 	}
 
+	if (unlikely(es->s_error_count && !jbd2_journal_errno(journal) &&
+		     !(le16_to_cpu(es->s_state) & EXT4_ERROR_FS))) {
+		EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
+		es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
+		err = ext4_commit_super(sb);
+		if (err) {
+			ext4_msg(sb, KERN_ERR,
+				 "Failed to commit error information, please repair fs force!");
+			goto err_out;
+		}
+	}
+
 	EXT4_SB(sb)->s_journal = journal;
 	err = ext4_clear_journal_err(sb, es);
 	if (err) {
-- 
2.31.1