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    Subject[PATCH AUTOSEL 6.6 35/75] ext4: add a hint for block bitmap corrupt state in mb_groups
    Date
    From: Zhang Yi <yi.zhang@huawei.com>

    [ 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: 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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    fs/ext4/mballoc.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
    index ea5ac2636632b..360d91845311b 100644
    --- a/fs/ext4/mballoc.c
    +++ b/fs/ext4/mballoc.c
    @@ -3060,7 +3060,10 @@ 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;
    }
    --
    2.43.0

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