diff --git a/block/blk.h b/block/blk.h
index 4943770..3c510a4 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -199,6 +199,7 @@
  * Internal io_context interface
  */
 void get_io_context(struct io_context *ioc);
+struct io_cq *ioc_lookup_icq(struct io_context *ioc, struct request_queue *q);
 
 void create_io_context_slowpath(struct task_struct *task, gfp_t gfp_mask,
 				int node);