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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-04-20 20:45:39 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@nelson.home.kernel.dk> | 2007-04-30 09:01:23 +0200 |
| commit | cc19747977824ece6aa1c56a29e974fef5ec2b32 (patch) | |
| tree | bbb07231a1323ddd007a11eb2683188492d2e26e /block | |
| parent | 3ed9a2965c47636bc0ebafab31a39f1c105492ca (diff) | |
| download | linux-cc19747977824ece6aa1c56a29e974fef5ec2b32.tar.bz2 | |
cfq-iosched: tighten queue request overlap condition
For tagged devices, allow overlap of requests if the idle window
isn't enabled on the current active queue.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/cfq-iosched.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index a8237be97a28..e859b4966e4c 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -989,7 +989,8 @@ static struct cfq_queue *cfq_select_queue(struct cfq_data *cfqd) * flight or is idling for a new request, allow either of these * conditions to happen (or time out) before selecting a new queue. */ - if (cfqq->dispatched || timer_pending(&cfqd->idle_slice_timer)) { + if (timer_pending(&cfqd->idle_slice_timer) || + (cfqq->dispatched && cfq_cfqq_idle_window(cfqq))) { cfqq = NULL; goto keep_queue; } |