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yaml
---
r: 3825
b: refs/heads/master
c: 99f95e5
h: refs/heads/master
i:
  3823: 3f55205
v: v3
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Andrew Morton authored and Linus Torvalds committed Jun 28, 2005
1 parent b9a3475 commit d641521
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Showing 2 changed files with 25 additions and 26 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 6e5a32754c67f0d156c2f196d604b2e9129a1fd5
refs/heads/master: 99f95e5286df2f69edab8a04c7080d986ee4233b
49 changes: 24 additions & 25 deletions trunk/drivers/block/cfq-iosched.c
Original file line number Diff line number Diff line change
Expand Up @@ -300,7 +300,6 @@ CFQ_CRQ_FNS(requeued);
static struct cfq_queue *cfq_find_cfq_hash(struct cfq_data *, unsigned int, unsigned short);
static void cfq_dispatch_sort(request_queue_t *, struct cfq_rq *);
static void cfq_put_cfqd(struct cfq_data *cfqd);
static inline int cfq_pending_requests(struct cfq_data *cfqd);

#define process_sync(tsk) ((tsk)->flags & PF_SYNCWRITE)

Expand Down Expand Up @@ -348,6 +347,28 @@ static struct request *cfq_find_rq_hash(struct cfq_data *cfqd, sector_t offset)
return NULL;
}

static inline int cfq_pending_requests(struct cfq_data *cfqd)
{
return !list_empty(&cfqd->queue->queue_head) || cfqd->busy_queues;
}

/*
* scheduler run of queue, if there are requests pending and no one in the
* driver that will restart queueing
*/
static inline void cfq_schedule_dispatch(struct cfq_data *cfqd)
{
if (!cfqd->rq_in_driver && cfq_pending_requests(cfqd))
kblockd_schedule_work(&cfqd->unplug_work);
}

static int cfq_queue_empty(request_queue_t *q)
{
struct cfq_data *cfqd = q->elevator->elevator_data;

return !cfq_pending_requests(cfqd);
}

/*
* Lifted from AS - choose which of crq1 and crq2 that is best served now.
* We choose the request that is closest to the head right now. Distance
Expand Down Expand Up @@ -1071,16 +1092,6 @@ cfq_prio_to_maxrq(struct cfq_data *cfqd, struct cfq_queue *cfqq)
return 2 * (base_rq + base_rq * (CFQ_PRIO_LISTS - 1 - cfqq->ioprio));
}

/*
* scheduler run of queue, if there are requests pending and no one in the
* driver that will restart queueing
*/
static inline void cfq_schedule_dispatch(struct cfq_data *cfqd)
{
if (!cfqd->rq_in_driver && cfq_pending_requests(cfqd))
kblockd_schedule_work(&cfqd->unplug_work);
}

/*
* get next queue for service
*/
Expand Down Expand Up @@ -1846,18 +1857,6 @@ cfq_insert_request(request_queue_t *q, struct request *rq, int where)
}
}

static inline int cfq_pending_requests(struct cfq_data *cfqd)
{
return !list_empty(&cfqd->queue->queue_head) || cfqd->busy_queues;
}

static int cfq_queue_empty(request_queue_t *q)
{
struct cfq_data *cfqd = q->elevator->elevator_data;

return !cfq_pending_requests(cfqd);
}

static void cfq_completed_request(request_queue_t *q, struct request *rq)
{
struct cfq_rq *crq = RQ_DATA(rq);
Expand Down Expand Up @@ -1952,7 +1951,7 @@ __cfq_may_queue(struct cfq_data *cfqd, struct cfq_queue *cfqq,
{
#if 1
if ((cfq_cfqq_wait_request(cfqq) || cfq_cfqq_must_alloc(cfqq)) &&
!cfq_cfqq_must_alloc_slice) {
!cfq_cfqq_must_alloc_slice(cfqq)) {
cfq_mark_cfqq_must_alloc_slice(cfqq);
return ELV_MQUEUE_MUST;
}
Expand All @@ -1969,7 +1968,7 @@ __cfq_may_queue(struct cfq_data *cfqd, struct cfq_queue *cfqq,
* only allow 1 ELV_MQUEUE_MUST per slice, otherwise we
* can quickly flood the queue with writes from a single task
*/
if (rw == READ || !cfq_cfqq_must_alloc_slice) {
if (rw == READ || !cfq_cfqq_must_alloc_slice(cfqq)) {
cfq_mark_cfqq_must_alloc_slice(cfqq);
return ELV_MQUEUE_MUST;
}
Expand Down

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