src/patches/suse-2.6.27.31/patches.fixes/dm-unbind-drop-ref

   1 From: Mikulas Patocka <mpatocka@redhat.com>
   2 Subject: dm table: drop reference at unbind
   3 References: bnc#457205
   4 Patch-mainline: 2.6.28-rc4
   5 Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
   6
   7 [PATCH 2/3] for bnc 457205
   8
   9 mainline commit a1b51e98676932d031f5eec1325b2df4bbdc8f26
  10
  11
  12     Move one dm_table_put() so that the last reference in the thread
  13     gets dropped in __unbind().
  14
  15     This is required for a following patch,
  16     dm-table-rework-reference-counting.patch, which will change the logic in
  17     such a way that table destructor is called only at specific points in
  18     the code.
  19
  20     Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
  21     Signed-off-by: Alasdair G Kergon <agk@redhat.com>
  22
  23 Index: linux-2.6.27/drivers/md/dm.c
  24 ===================================================================
  25 --- linux-2.6.27.orig/drivers/md/dm.c
  26 +++ linux-2.6.27/drivers/md/dm.c
  27 @@ -2055,8 +2055,8 @@ void dm_put(struct mapped_device *md)
  28                         dm_table_presuspend_targets(map);
  29                         dm_table_postsuspend_targets(map);
  30                 }
  31 -               __unbind(md);
  32                 dm_table_put(map);
  33 +               __unbind(md);
  34                 free_dev(md);
  35         }
  36  }