diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index b01c377..68720ab 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -370,6 +370,7 @@
 
 	struct list_head	icq_list;
 #ifdef CONFIG_BLK_CGROUP
+	DECLARE_BITMAP		(blkcg_pols, BLKCG_MAX_POLS);
 	struct blkio_group	*root_blkg;
 	struct list_head	blkg_list;
 #endif