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cfq-iosched: remove the implicit queue kicking in slice expire 

We only really need it for a process going away, so move it to
those locations.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2007-01-19 12:09:53 +11:00 committed by Jens Axboe
parent 3c6bd2f879
commit 28f95cbc3e
1 changed files with 6 additions and 6 deletions
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12
block/cfq-iosched.c
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@ -693,9 +693,6 @@ __cfq_slice_expired(struct cfq_data *cfqd, struct cfq_queue *cfqq,
if (cfq_cfqq_wait_request(cfqq))
del_timer(&cfqd->idle_slice_timer);
if (!preempted && !cfq_cfqq_dispatched(cfqq))
cfq_schedule_dispatch(cfqd);
cfq_clear_cfqq_must_dispatch(cfqq);
cfq_clear_cfqq_wait_request(cfqq);
cfq_clear_cfqq_queue_new(cfqq);
@ -1102,8 +1099,10 @@ static void cfq_put_queue(struct cfq_queue *cfqq)
BUG_ON(cfqq->allocated[READ] + cfqq->allocated[WRITE]);
BUG_ON(cfq_cfqq_on_rr(cfqq));
if (unlikely(cfqd->active_queue == cfqq))
if (unlikely(cfqd->active_queue == cfqq)) {
__cfq_slice_expired(cfqd, cfqq, 0, 0);
cfq_schedule_dispatch(cfqd);
}
/*
* it's on the empty list and still hashed
@ -1158,8 +1157,10 @@ static void cfq_free_io_context(struct io_context *ioc)
static void cfq_exit_cfqq(struct cfq_data *cfqd, struct cfq_queue *cfqq)
{
if (unlikely(cfqq == cfqd->active_queue))
if (unlikely(cfqq == cfqd->active_queue)) {
__cfq_slice_expired(cfqd, cfqq, 0, 0);
cfq_schedule_dispatch(cfqd);
}
cfq_put_queue(cfqq);
}
@ -1565,7 +1566,6 @@ cfq_update_idle_window(struct cfq_data *cfqd, struct cfq_queue *cfqq,
cfq_clear_cfqq_idle_window(cfqq);
}
/*
* Check if new_cfqq should preempt the currently active queue. Return 0 for
* no or if we aren't sure, a 1 will cause a preempt.