diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 91fa428..16a902f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1297,15 +1297,18 @@
 	return 0;
 }
 
-static inline void blk_start_plug(struct list_head *list)
+struct blk_plug {
+};
+
+static inline void blk_start_plug(struct blk_plug *plug)
 {
 }
 
-static inline void blk_finish_plug(struct list_head *list)
+static inline void blk_finish_plug(struct blk_plug *plug)
 {
 }
 
-static inline void blk_flush_plug(struct task_struct *tsk)
+static inline void blk_flush_plug(struct task_struct *task)
 {
 }