ldiskfs/kernel_patches/patches/sles12sp3/ext4-dont-check-before-replay.patch

   1 Index: linux-stage/fs/ext4/super.c
   2 When ldiskfs run in failover mode whith read-only disk.
   3 Part of allocation updates are lost and ldiskfs may fail
   4 while mounting this is due to inconsistent state of
   5 group-descriptor. Group-descriptor check is added after
   6 journal replay.
   7 ===================================================================
   8 --- linux-stage/fs/ext4/super.c 2016-11-06 15:15:30.892386878 +0530
   9 +++ linux-stage.orig.1/fs/ext4/super.c  2016-11-08 10:56:45.579892189 +0530
  10 @@ -3884,12 +3884,6 @@ static int ext4_fill_super(struct super_
  11                 }
  12         }
  13         sbi->s_gdb_count = db_count;
  14 -       if (!ext4_check_descriptors(sb, logical_sb_block, &first_not_zeroed)) {
  15 -               ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
  16 -               ret = -EFSCORRUPTED;
  17 -               goto failed_mount2;
  18 -       }
  19 -
  20         get_random_bytes(&sbi->s_next_generation, sizeof(u32));
  21         spin_lock_init(&sbi->s_next_gen_lock);
  22
  23 @@ -4020,6 +4014,13 @@ static int ext4_fill_super(struct super_
  24         sbi->s_journal->j_commit_callback = ext4_journal_commit_callback;
  25
  26  no_journal:
  27 +
  28 +       if (!ext4_check_descriptors(sb, logical_sb_block, &first_not_zeroed)) {
  29 +               ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
  30 +               ret = -EFSCORRUPTED;
  31 +               goto failed_mount_wq;
  32 +       }
  33 +
  34         sbi->s_mb_cache = ext4_xattr_create_cache();
  35         if (!sbi->s_mb_cache) {
  36                 ext4_msg(sb, KERN_ERR, "Failed to create an mb_cache");