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ext4: add a hint for block bitmap corrupt state in mb_groups 

If one group is marked as block bitmap corrupted, its free blocks cannot
be used and its free count is also deducted from the global
sbi->s_freeclusters_counter. User might be confused about the absent
free space because we can't query the information about corrupted block
groups except unreliable error messages in syslog. So add a hint to show
block bitmap corrupted groups in mb_groups.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240119061154.1525781-1-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi 2024-01-19 14:11:54 +08:00 committed by Theodore Ts'o
parent 547e64bda9
commit 68ee261fb1
1 changed files with 4 additions and 1 deletions
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5
fs/ext4/mballoc.c
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@ -3059,7 +3059,10 @@ static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v)
for (i = 0; i <= 13; i++)
seq_printf(seq, " %-5u", i <= blocksize_bits + 1 ?
sg.info.bb_counters[i] : 0);
seq_puts(seq, " ]\n");
seq_puts(seq, " ]");
if (EXT4_MB_GRP_BBITMAP_CORRUPT(&sg.info))
seq_puts(seq, " Block bitmap corrupted!");
seq_puts(seq, "\n");
return 0;
}