Commit b31e2816 authored by Zhang Yi's avatar Zhang Yi Committed by sanglipeng1
Browse files

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

stable inclusion
from stable-v5.10.215
commit 6545e1307a1ecc144c2d1a3152b221b83128c45d
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IAJJ2D

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6545e1307a1ecc144c2d1a3152b221b83128c45d



--------------------------------

[ Upstream commit 68ee261fb15457ecb17e3683cb4e6a4792ca5b71 ]

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: default avatarZhang Yi <yi.zhang@huawei.com>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240119061154.1525781-1-yi.zhang@huaweicloud.com


Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
Signed-off-by: default avatarsanglipeng1 <sanglipeng1@jd.com>
parent e29acfe8

fs/ext4/mballoc.c

+4 −1
Original line number Diff line number Diff line
@@ -2594,7 +2594,10 @@ 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;

}