ext4: don't save the error information if the block device is read-only

Google-Bug-Id: 20939131 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
mariux64 · May 14, 2015 · 1b46617 · 1b46617
1 parent 8f4d855
commit 1b46617
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
@@ -294,6 +294,8 @@ static void __save_error_info(struct super_block *sb, const char *func,
 	struct ext4_super_block *es = EXT4_SB(sb)->s_es;
 
 	EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
+	if (bdev_read_only(sb->s_bdev))
+		return;
 	es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
 	es->s_last_error_time = cpu_to_le32(get_seconds());
 	strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));