-extern void elv_dispatch_sort(request_queue_t *, struct request *);
-extern void elv_dispatch_add_tail(request_queue_t *, struct request *);
-extern void elv_add_request(request_queue_t *, struct request *, int, int);
-extern void __elv_add_request(request_queue_t *, struct request *, int, int);
-extern void elv_insert(request_queue_t *, struct request *, int);
-extern int elv_merge(request_queue_t *, struct request **, struct bio *);
-extern void elv_merge_requests(request_queue_t *, struct request *,
+extern void elv_dispatch_sort(struct request_queue *, struct request *);
+extern void elv_dispatch_add_tail(struct request_queue *, struct request *);
+extern void elv_add_request(struct request_queue *, struct request *, int, int);
+extern void __elv_add_request(struct request_queue *, struct request *, int, int);
+extern void elv_insert(struct request_queue *, struct request *, int);
+extern int elv_merge(struct request_queue *, struct request **, struct bio *);
+extern void elv_merge_requests(struct request_queue *, struct request *,