ext4_nodelalloc_mount_opt.patch

   1 Add a mount option to turn off delayed allocation.
   2
   3 From: Mingming Cao <cmm@us.ibm.com>
   4
   5 Signed-off-by: Mingming Cao <cmm@us.ibm.com>
   6 ---
   7 ---
   8  fs/ext4/super.c |    6 +++++-
   9  1 file changed, 5 insertions(+), 1 deletion(-)
  10
  11 Index: linux-2.6.23-rc2/fs/ext4/super.c
  12 ===================================================================
  13 --- linux-2.6.23-rc2.orig/fs/ext4/super.c       2007-08-06 22:19:05.000000000 -0700
  14 +++ linux-2.6.23-rc2/fs/ext4/super.c    2007-08-06 22:19:11.000000000 -0700
  15 @@ -746,7 +746,7 @@ enum {
  16         Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
  17         Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
  18         Opt_grpquota, Opt_extents, Opt_noextents,
  19 -       Opt_delayed_alloc,
  20 +       Opt_delayed_alloc, Opt_nodelayed_alloc,
  21  };
  22
  23  static match_table_t tokens = {
  24 @@ -801,6 +801,7 @@ static match_table_t tokens = {
  25         {Opt_extents, "extents"},
  26         {Opt_noextents, "noextents"},
  27         {Opt_delayed_alloc, "delalloc"},
  28 +       {Opt_nodelayed_alloc, "nodelalloc"},
  29         {Opt_err, NULL},
  30         {Opt_resize, "resize"},
  31  };
  32 @@ -1125,6 +1126,9 @@ clear_qf_name:
  33                 case Opt_delayed_alloc:
  34                         set_opt(sbi->s_mount_opt, DELAYED_ALLOC);
  35                         break;
  36 +               case Opt_nodelayed_alloc:
  37 +                       clear_opt(sbi->s_mount_opt, DELAYED_ALLOC);
  38 +                       break;
  39                 case Opt_ignore:
  40                         break;
  41                 case Opt_resize: