[PATCH] dm: remove bogus yields

Replace a couple of bogus yields() with schedule() and io_schedule()
respectively.

drivers/md/dm-ioctl.c

@@ -730,8 +730,7 @@ static int wait_device_event(struct dm_ioctl *param, struct dm_ioctl *user)
 	dm_table_put(table);
 	dm_put(md);
 
-	yield();
-	set_current_state(TASK_RUNNING);
+	schedule();
 
       out:
 	return results_to_user(user, param, NULL, 0);

drivers/md/dm.c

@@ -783,10 +783,9 @@ int dm_suspend(struct mapped_device *md)
 		if (!atomic_read(&md->pending))
 			break;
 
-		yield();
+		io_schedule();
 	}
-
-	current->state = TASK_RUNNING;
+	set_current_state(TASK_RUNNING);
 
 	down_write(&md->lock);
 	remove_wait_queue(&md->wait, &wait);