Merge branch 'master'

[linux-2.6] / include / linux / elevator.h

diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 76f4f6920744496ded49763acac725c88822a857..23fe746a1d514b8f912c7c6cfab8e53d5ba8e92d 100644 (file)
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -16,7 +16,7 @@ typedef struct request *(elevator_request_list_fn) (request_queue_t *, struct re
 typedef void (elevator_completed_req_fn) (request_queue_t *, struct request *);
 typedef int (elevator_may_queue_fn) (request_queue_t *, int, struct bio *);
 
-typedef int (elevator_set_req_fn) (request_queue_t *, struct request *, struct bio *, int);
+typedef int (elevator_set_req_fn) (request_queue_t *, struct request *, struct bio *, gfp_t);
 typedef void (elevator_put_req_fn) (request_queue_t *, struct request *);
 typedef void (elevator_activate_req_fn) (request_queue_t *, struct request *);
 typedef void (elevator_deactivate_req_fn) (request_queue_t *, struct request *);
@@ -66,7 +66,7 @@ struct elevator_type
 };
 
 /*
- * each queue has an elevator_queue assoicated with it
+ * each queue has an elevator_queue associated with it
  */
 struct elevator_queue
 {
@@ -79,7 +79,7 @@ struct elevator_queue
 /*
  * block elevator interface
  */
-extern void elv_dispatch_insert(request_queue_t *, struct request *, int);
+extern void elv_dispatch_sort(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 int elv_merge(request_queue_t *, struct request **, struct bio *);
@@ -96,7 +96,7 @@ extern int elv_register_queue(request_queue_t *q);
 extern void elv_unregister_queue(request_queue_t *q);
 extern int elv_may_queue(request_queue_t *, int, struct bio *);
 extern void elv_completed_request(request_queue_t *, struct request *);
-extern int elv_set_request(request_queue_t *, struct request *, struct bio *, int);
+extern int elv_set_request(request_queue_t *, struct request *, struct bio *, gfp_t);
 extern void elv_put_request(request_queue_t *, struct request *);
 
 /*
@@ -114,8 +114,6 @@ extern ssize_t elv_iosched_store(request_queue_t *, const char *, size_t);
 extern int elevator_init(request_queue_t *, char *);
 extern void elevator_exit(elevator_t *);
 extern int elv_rq_merge_ok(struct request *, struct bio *);
-extern int elv_try_merge(struct request *, struct bio *);
-extern int elv_try_last_merge(request_queue_t *, struct bio *);
 
 /*
  * Return values from elevator merger
@@ -130,6 +128,7 @@ extern int elv_try_last_merge(request_queue_t *, struct bio *);
 #define ELEVATOR_INSERT_FRONT  1
 #define ELEVATOR_INSERT_BACK   2
 #define ELEVATOR_INSERT_SORT   3
+#define ELEVATOR_INSERT_REQUEUE        4
 
 /*
  * return values from elevator_may_queue_fn
@@ -140,4 +139,6 @@ enum {
        ELV_MQUEUE_MUST,
 };
 
+#define rq_end_sector(rq)      ((rq)->sector + (rq)->nr_sectors)
+
 #endif