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Subject[PATCH 12/15] cfq-iosched: get rid of ->dispatch_slice
Date
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>
---
block/cfq-iosched.c | 6 +-----
1 files changed, 1 insertions(+), 5 deletions(-)
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index b680002..8f76aed 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -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;

@@ -769,8 +768,6 @@ __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)
@@ -1020,7 +1017,6 @@ __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) {
@@ -1038,7 +1034,7 @@ __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);
--
1.5.1.1.190.g74474
-
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