queue-6.6/ext4-add-a-hint-for-block-bitmap-corrupt-state-in-mb.patch

   1 From 1480a141920fa4b932ddbdea51e01f0b47b0c367 Mon Sep 17 00:00:00 2001
   2 From: Sasha Levin <sashal@kernel.org>
   3 Date: Fri, 19 Jan 2024 14:11:54 +0800
   4 Subject: ext4: add a hint for block bitmap corrupt state in mb_groups
   5
   6 From: Zhang Yi <yi.zhang@huawei.com>
   7
   8 [ Upstream commit 68ee261fb15457ecb17e3683cb4e6a4792ca5b71 ]
   9
  10 If one group is marked as block bitmap corrupted, its free blocks cannot
  11 be used and its free count is also deducted from the global
  12 sbi->s_freeclusters_counter. User might be confused about the absent
  13 free space because we can't query the information about corrupted block
  14 groups except unreliable error messages in syslog. So add a hint to show
  15 block bitmap corrupted groups in mb_groups.
  16
  17 Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
  18 Reviewed-by: Jan Kara <jack@suse.cz>
  19 Link: https://lore.kernel.org/r/20240119061154.1525781-1-yi.zhang@huaweicloud.com
  20 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
  21 Signed-off-by: Sasha Levin <sashal@kernel.org>
  22 ---
  23  fs/ext4/mballoc.c | 5 ++++-
  24  1 file changed, 4 insertions(+), 1 deletion(-)
  25
  26 diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
  27 index 257b70c5ded45..a8a3ea2fd690f 100644
  28 --- a/fs/ext4/mballoc.c
  29 +++ b/fs/ext4/mballoc.c
  30 @@ -3060,7 +3060,10 @@ static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v)
  31         for (i = 0; i <= 13; i++)
  32                 seq_printf(seq, " %-5u", i <= blocksize_bits + 1 ?
  33                                 sg.info.bb_counters[i] : 0);
  34 -       seq_puts(seq, " ]\n");
  35 +       seq_puts(seq, " ]");
  36 +       if (EXT4_MB_GRP_BBITMAP_CORRUPT(&sg.info))
  37 +               seq_puts(seq, " Block bitmap corrupted!");
  38 +       seq_puts(seq, "\n");
  39
  40         return 0;
  41  }
  42 --
  43 2.43.0
  44