ldiskfs/kernel_patches/patches/ext3-force_over_8tb-rhel5.patch

   1 Index: linux-2.6.18-128.1.6/fs/ext3/super.c
   2 ===================================================================
   3 --- linux-2.6.18-128.1.6.orig/fs/ext3/super.c
   4 +++ linux-2.6.18-128.1.6/fs/ext3/super.c
   5 @@ -51,6 +51,8 @@
   6  #define EXT3_DEFAULT_MAX_DIR_SIZE              0
   7  #define EXT3_MAX_DIR_SIZE_NAME         "max_dir_size"
   8
   9 +static int force_over_8tb;
  10 +
  11  static int ext3_load_journal(struct super_block *, struct ext3_super_block *,
  12                              unsigned long journal_devnum);
  13  static int ext3_create_journal(struct super_block *, struct ext3_super_block *,
  14 @@ -715,7 +717,7 @@ enum {
  15         Opt_iopen, Opt_noiopen, Opt_iopen_nopriv,
  16         Opt_grpquota,
  17         Opt_extents, Opt_noextents, Opt_bigendian_extents, Opt_extdebug,
  18 -       Opt_mballoc, Opt_nomballoc, Opt_stripe,
  19 +       Opt_mballoc, Opt_nomballoc, Opt_stripe, Opt_force_over_8tb,
  20  };
  21
  22  static match_table_t tokens = {
  23 @@ -779,6 +781,7 @@ static match_table_t tokens = {
  24         {Opt_mballoc, "mballoc"},
  25         {Opt_nomballoc, "nomballoc"},
  26         {Opt_stripe, "stripe=%u"},
  27 +       {Opt_force_over_8tb, "force_over_8tb"},
  28         {Opt_err, NULL},
  29         {Opt_resize, "resize"},
  30  };
  31 @@ -1157,6 +1160,9 @@ clear_qf_name:
  32                                 return 0;
  33                         sbi->s_stripe = option;
  34                         break;
  35 +               case Opt_force_over_8tb:
  36 +                       force_over_8tb = 1;
  37 +                       break;
  38                 default:
  39                         printk (KERN_ERR
  40                                 "EXT3-fs: Unrecognized mount option \"%s\" "
  41 @@ -2248,6 +2254,17 @@ static int ext3_fill_super (struct super
  42                 goto failed_mount;
  43         }
  44
  45 +       if (le32_to_cpu(es->s_blocks_count) >
  46 +           ((0x80000000000ULL >> sb->s_blocksize_bits) - 1)) {
  47 +               if (force_over_8tb == 0) {
  48 +                       printk(KERN_ERR "EXT3-fs does not support filesystems "
  49 +                              "greater than 8TB and can cause data corruption."
  50 +                              "Use \"force_over_8tb\" mount option to override."
  51 +                              "\n");
  52 +                       goto failed_mount;
  53 +               }
  54 +       }
  55 +
  56         if (EXT3_BLOCKS_PER_GROUP(sb) == 0)
  57                 goto cantfind_ext3;
  58         sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) -