ldiskfs/kernel_patches/patches/ext3-big-endian-check-2.6.22-vanilla.patch

   1 Index: linux-2.6.22.14/fs/ext3/super.c
   2 ===================================================================
   3 --- linux-2.6.22.14.orig/fs/ext3/super.c
   4 +++ linux-2.6.22.14/fs/ext3/super.c
   5 @@ -71,6 +71,8 @@ static void ext3_unlockfs(struct super_b
   6  static void ext3_write_super (struct super_block * sb);
   7  static void ext3_write_super_lockfs(struct super_block *sb);
   8
   9 +static int bigendian_extents;
  10 +
  11  /*
  12   * Wrappers for journal_start/end.
  13   *
  14 @@ -700,7 +702,7 @@ enum {
  15         Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
  16         Opt_iopen, Opt_noiopen, Opt_iopen_nopriv,
  17         Opt_grpquota,
  18 -       Opt_extents, Opt_noextents, Opt_extdebug,
  19 +       Opt_extents, Opt_noextents, Opt_bigendian_extents, Opt_extdebug,
  20         Opt_mballoc, Opt_nomballoc, Opt_stripe,
  21  };
  22
  23 @@ -756,6 +758,7 @@ static match_table_t tokens = {
  24         {Opt_barrier, "barrier=%u"},
  25         {Opt_extents, "extents"},
  26         {Opt_noextents, "noextents"},
  27 +       {Opt_bigendian_extents, "bigendian_extents"},
  28         {Opt_extdebug, "extdebug"},
  29         {Opt_mballoc, "mballoc"},
  30         {Opt_nomballoc, "nomballoc"},
  31 @@ -1110,6 +1113,9 @@ clear_qf_name:
  32                 case Opt_noextents:
  33                         clear_opt (sbi->s_mount_opt, EXTENTS);
  34                         break;
  35 +               case Opt_bigendian_extents:
  36 +                       bigendian_extents = 1;
  37 +                       break;
  38                 case Opt_extdebug:
  39                         set_opt (sbi->s_mount_opt, EXTDEBUG);
  40                         break;
  41 @@ -2208,6 +2214,15 @@ static int ext3_fill_super (struct super
  42                 goto failed_mount;
  43         }
  44
  45 +#ifdef __BIG_ENDIAN
  46 +       if (bigendian_extents == 0) {
  47 +               printk(KERN_ERR "EXT3-fs: extents feature is not guaranteed to "
  48 +                      "work on big-endian systems. Use \"bigendian_extents\" "
  49 +                      "mount option to override.\n");
  50 +               goto failed_mount;
  51 +       }
  52 +#endif
  53 +
  54         bgl_lock_init(&sbi->s_blockgroup_lock);
  55
  56         sbi->s_last_alloc_group = -1;