linux-kernel - [PATCH v2] ext4: Fix ext4_error_err save negative errno into superblock

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Message-ID: <20210401074017.3382721-1-yebin10@huawei.com>
Date:   Thu, 1 Apr 2021 15:40:17 +0800
From:   Ye Bin <yebin10@...wei.com>
To:     <tytso@....edu>, <adilger.kernel@...ger.ca>,
        <linux-ext4@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Ye Bin <yebin10@...wei.com>,
        Liu Zhi Qiang <liuzhiqiang26@...wei.com>
Subject: [PATCH v2] ext4: Fix ext4_error_err save negative errno into superblock

As read_mmp_block return 1 when failed. read_mmp_block return -EIO when buffer
isn't uptodate.

Fixes: 54d3adbc29f0 ("ext4: save all error info in save_error_info() and
drop ext4_set_errno()")
Reported-by: Liu Zhi Qiang <liuzhiqiang26@...wei.com>
Signed-off-by: Ye Bin <yebin10@...wei.com>
---
 fs/ext4/mmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 795c3ff2907c..68fbeedd627b 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -56,7 +56,7 @@ static int write_mmp_block(struct super_block *sb, struct buffer_head *bh)
 	wait_on_buffer(bh);
 	sb_end_write(sb);
 	if (unlikely(!buffer_uptodate(bh)))
-		return 1;
+		return -EIO;
 
 	return 0;
 }
-- 
2.25.4