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cfq-iosched: get rid of ->dispatch_slice

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

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2007-04-23 08:26:36 +02:00 committed by Jens Axboe
parent 6084cdda0e
commit 20e493a8d0
1 changed files with 1 additions and 5 deletions
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6
block/cfq-iosched.c
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@ -106,7 +106,6 @@ struct cfq_data {
struct cfq_queue *active_queue; struct cfq_queue *active_queue;
struct cfq_io_context *active_cic; struct cfq_io_context *active_cic;
unsigned int dispatch_slice;
struct timer_list idle_class_timer; 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); put_io_context(cfqd->active_cic->ioc);
cfqd->active_cic = NULL; cfqd->active_cic = NULL;
} }
cfqd->dispatch_slice = 0;
} }
static inline void cfq_slice_expired(struct cfq_data *cfqd, int timed_out) 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); cfq_dispatch_insert(cfqd->queue, rq);
cfqd->dispatch_slice++;
dispatched++; dispatched++;
if (!cfqd->active_cic) { 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. * queue always expire after 1 dispatch round.
*/ */
if (cfqd->busy_queues > 1 && ((!cfq_cfqq_sync(cfqq) && 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))) { cfq_class_idle(cfqq))) {
cfqq->slice_end = jiffies + 1; cfqq->slice_end = jiffies + 1;
cfq_slice_expired(cfqd, 0); cfq_slice_expired(cfqd, 0);