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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-01-14 22:26:09 +1100 |
|---|---|---|
| committer | Jens Axboe <axboe@carl.home.kernel.dk> | 2007-02-11 23:14:44 +0100 |
| commit | cad9751642b62cbb5f62feedc546b4f7890497d4 (patch) | |
| tree | f73352cb6ed7fbd66614fb59b1e8694f39ebc838 /block | |
| parent | 958b7f37ee0fb2846c8d44310a68ae9605614ff9 (diff) | |
| download | linux-cad9751642b62cbb5f62feedc546b4f7890497d4.tar.bz2 | |
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.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/block/elevator.c b/block/elevator.c index f6dafa8c7c4d..d03762399147 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 |