Merge branch 'master' into for-2.6.35

Conflicts:
	block/blk-cgroup.c
	block/cfq-iosched.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 0e8ca0347707..f13e067e1467 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -227,6 +227,9 @@ static struct device_attribute bdi_dev_attrs[] = {
 static __init int bdi_class_init(void)
 {
         bdi_class = class_create(THIS_MODULE, "bdi");
+        if (IS_ERR(bdi_class))
+                return PTR_ERR(bdi_class);
+
         bdi_class->dev_attrs = bdi_dev_attrs;
         bdi_debug_init();
         return 0;