[PATCH] Update cfq io scheduler to time sliced design

[linux-2.6-omap-h63xx.git] / drivers / block / elevator.c

diff --git a/drivers/block/elevator.c b/drivers/block/elevator.c
index 8c51d1ccebbd6c14c20b160e126363f4f06476ab..98f0126a2deb3228e0866abcb44bf8b2c1af5859 100644 (file)
--- a/drivers/block/elevator.c
+++ b/drivers/block/elevator.c
@@ -220,11 +220,6 @@ void elevator_exit(elevator_t *e)
        kfree(e);
 }
 
-static int elevator_global_init(void)
-{
-       return 0;
-}
-
 int elv_merge(request_queue_t *q, struct request **req, struct bio *bio)
 {
        elevator_t *e = q->elevator;
@@ -329,7 +324,7 @@ void __elv_add_request(request_queue_t *q, struct request *rq, int where,
                        int nrq = q->rq.count[READ] + q->rq.count[WRITE]
                                  - q->in_flight;
 
-                       if (nrq == q->unplug_thresh)
+                       if (nrq >= q->unplug_thresh)
                                __generic_unplug_device(q);
                }
        } else
@@ -491,12 +486,13 @@ struct request *elv_former_request(request_queue_t *q, struct request *rq)
        return NULL;
 }
 
-int elv_set_request(request_queue_t *q, struct request *rq, int gfp_mask)
+int elv_set_request(request_queue_t *q, struct request *rq, struct bio *bio,
+                   int gfp_mask)
 {
        elevator_t *e = q->elevator;
 
        if (e->ops->elevator_set_req_fn)
-               return e->ops->elevator_set_req_fn(q, rq, gfp_mask);
+               return e->ops->elevator_set_req_fn(q, rq, bio, gfp_mask);
 
        rq->elevator_private = NULL;
        return 0;
@@ -510,12 +506,12 @@ void elv_put_request(request_queue_t *q, struct request *rq)
                e->ops->elevator_put_req_fn(q, rq);
 }
 
-int elv_may_queue(request_queue_t *q, int rw)
+int elv_may_queue(request_queue_t *q, int rw, struct bio *bio)
 {
        elevator_t *e = q->elevator;
 
        if (e->ops->elevator_may_queue_fn)
-               return e->ops->elevator_may_queue_fn(q, rw);
+               return e->ops->elevator_may_queue_fn(q, rw, bio);
 
        return ELV_MQUEUE_MAY;
 }
@@ -705,8 +701,6 @@ ssize_t elv_iosched_show(request_queue_t *q, char *name)
        return len;
 }
 
-module_init(elevator_global_init);
-
 EXPORT_SYMBOL(elv_add_request);
 EXPORT_SYMBOL(__elv_add_request);
 EXPORT_SYMBOL(elv_requeue_request);