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authorJens Axboe <jens.axboe@oracle.com>2007-01-14 22:26:09 +1100
committerJens Axboe <axboe@carl.home.kernel.dk>2007-02-11 23:14:44 +0100
commitcad9751642b62cbb5f62feedc546b4f7890497d4 (patch)
treef73352cb6ed7fbd66614fb59b1e8694f39ebc838 /block
parent958b7f37ee0fb2846c8d44310a68ae9605614ff9 (diff)
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elevator: abstract out the activate and deactivate functions
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/elevator.c29
1 files changed, 20 insertions, 9 deletions
diff --git a/block/elevator.c b/block/elevator.c
index f6dafa8c7c4..d0376239914 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -269,6 +269,22 @@ void elevator_exit(elevator_t *e)
EXPORT_SYMBOL(elevator_exit);
+static void elv_activate_rq(request_queue_t *q, struct request *rq)
+{
+ elevator_t *e = q->elevator;
+
+ if (e->ops->elevator_activate_req_fn)
+ e->ops->elevator_activate_req_fn(q, rq);
+}
+
+static void elv_deactivate_rq(request_queue_t *q, struct request *rq)
+{
+ elevator_t *e = q->elevator;
+
+ if (e->ops->elevator_deactivate_req_fn)
+ e->ops->elevator_deactivate_req_fn(q, rq);
+}
+
static inline void __elv_rqhash_del(struct request *rq)
{
hlist_del_init(&rq->hash);
@@ -498,16 +514,14 @@ void elv_merge_requests(request_queue_t *q, struct request *rq,
void elv_requeue_request(request_queue_t *q, struct request *rq)
{
- elevator_t *e = q->elevator;
-
/*
* it already went through dequeue, we need to decrement the
* in_flight count again
*/
if (blk_account_rq(rq)) {
q->in_flight--;
- if (blk_sorted_rq(rq) && e->ops->elevator_deactivate_req_fn)
- e->ops->elevator_deactivate_req_fn(q, rq);
+ if (blk_sorted_rq(rq))
+ elv_deactivate_rq(q, rq);
}
rq->cmd_flags &= ~REQ_STARTED;
@@ -700,16 +714,13 @@ struct request *elv_next_request(request_queue_t *q)
while ((rq = __elv_next_request(q)) != NULL) {
if (!(rq->cmd_flags & REQ_STARTED)) {
- elevator_t *e = q->elevator;
-
/*
* This is the first time the device driver
* sees this request (possibly after
* requeueing). Notify IO scheduler.
*/
- if (blk_sorted_rq(rq) &&
- e->ops->elevator_activate_req_fn)
- e->ops->elevator_activate_req_fn(q, rq);
+ if (blk_sorted_rq(rq))
+ elv_activate_rq(q, rq);
/*
* just mark as started even if we don't start