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Commit 20e493a8 authored by Jens Axboe's avatar Jens Axboe Committed by Jens Axboe
Browse files

cfq-iosched: get rid of ->dispatch_slice 



We can track it fairly accurately locally, let the slice handling
take care of the rest.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 6084cdda

block/cfq-iosched.c

+1 −5
Original line number Diff line number Diff line
@@ -106,7 +106,6 @@ struct cfq_data { 


	struct cfq_queue *active_queue;

	struct cfq_io_context *active_cic;

	unsigned int dispatch_slice;



	struct timer_list idle_class_timer;
@@ -775,8 +774,6 @@ __cfq_slice_expired(struct cfq_data *cfqd, struct cfq_queue *cfqq, 
		put_io_context(cfqd->active_cic->ioc);

		cfqd->active_cic = NULL;

	}



	cfqd->dispatch_slice = 0;

}



static inline void cfq_slice_expired(struct cfq_data *cfqd, int timed_out)
@@ -1026,7 +1023,6 @@ __cfq_dispatch_requests(struct cfq_data *cfqd, struct cfq_queue *cfqq, 
		 */

		cfq_dispatch_insert(cfqd->queue, rq);



		cfqd->dispatch_slice++;

		dispatched++;



		if (!cfqd->active_cic) {
@@ -1044,7 +1040,7 @@ __cfq_dispatch_requests(struct cfq_data *cfqd, struct cfq_queue *cfqq, 
	 * queue always expire after 1 dispatch round.

	 */

	if (cfqd->busy_queues > 1 && ((!cfq_cfqq_sync(cfqq) &&

	    cfqd->dispatch_slice >= cfq_prio_to_maxrq(cfqd, cfqq)) ||

	    dispatched >= cfq_prio_to_maxrq(cfqd, cfqq)) ||

	    cfq_class_idle(cfqq))) {

		cfqq->slice_end = jiffies + 1;

		cfq_slice_expired(cfqd, 0);