[PATCH] keep sync and async cfq_queue separate

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 860e7a4..e19cb63 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -58,7 +58,7 @@
 	 * circular list of cfq_io_contexts belonging to a process io context
 	 */
 	struct list_head list;
-	struct cfq_queue *cfqq;
+	struct cfq_queue *cfqq[2];
 	void *key;
 
 	struct io_context *ioc;