Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.fixes / dm-unbind-drop-ref

diff --git a/src/patches/suse-2.6.27.31/patches.fixes/dm-unbind-drop-ref b/src/patches/suse-2.6.27.31/patches.fixes/dm-unbind-drop-ref
new file mode 100644 (file)
index 0000000..470314b
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.fixes/dm-unbind-drop-ref
@@ -0,0 +1,36 @@
+From: Mikulas Patocka <mpatocka@redhat.com>
+Subject: dm table: drop reference at unbind
+References: bnc#457205
+Patch-mainline: 2.6.28-rc4
+Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
+
+[PATCH 2/3] for bnc 457205
+
+mainline commit a1b51e98676932d031f5eec1325b2df4bbdc8f26
+
+    
+    Move one dm_table_put() so that the last reference in the thread
+    gets dropped in __unbind().
+    
+    This is required for a following patch,
+    dm-table-rework-reference-counting.patch, which will change the logic in
+    such a way that table destructor is called only at specific points in
+    the code.
+    
+    Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
+    Signed-off-by: Alasdair G Kergon <agk@redhat.com>
+
+Index: linux-2.6.27/drivers/md/dm.c
+===================================================================
+--- linux-2.6.27.orig/drivers/md/dm.c
++++ linux-2.6.27/drivers/md/dm.c
+@@ -2055,8 +2055,8 @@ void dm_put(struct mapped_device *md)
+                       dm_table_presuspend_targets(map);
+                       dm_table_postsuspend_targets(map);
+               }
+-              __unbind(md);
+               dm_table_put(map);
++              __unbind(md);
+               free_dev(md);
+       }
+ }