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ext4: commit super block if fs record error when journal record without error 

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 just recover 'es->s_state' error flag after journal
replay like error info.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230307061703.245965-2-yebin@huaweicloud.com
This commit is contained in:
Ye Bin 2023-03-07 14:17:02 +08:00 committed by Theodore Ts'o
parent 62913ae96d
commit eee00237fa
1 changed files with 9 additions and 0 deletions
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9
fs/ext4/super.c
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@ -5959,6 +5959,7 @@ static int ext4_load_journal(struct super_block *sb,
err = jbd2_journal_wipe(journal, !really_read_only);
if (!err) {
char *save = kmalloc(EXT4_S_ERR_LEN, GFP_KERNEL);
if (save)
memcpy(save, ((char *) es) +
EXT4_S_ERR_START, EXT4_S_ERR_LEN);
@ -5967,6 +5968,14 @@ static int ext4_load_journal(struct super_block *sb,
memcpy(((char *) es) + EXT4_S_ERR_START,
save, EXT4_S_ERR_LEN);
kfree(save);
es->s_state |= cpu_to_le16(EXT4_SB(sb)->s_mount_state &
EXT4_ERROR_FS);
/* Write out restored error information to the superblock */
if (!bdev_read_only(sb->s_bdev)) {
int err2;
err2 = ext4_commit_super(sb);
err = err ? : err2;
}
}
if (err) {