From cc19747977824ece6aa1c56a29e974fef5ec2b32 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 20 Apr 2007 20:45:39 +0200 Subject: [PATCH] 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 --- block/cfq-iosched.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index a8237be97a..e859b4966e 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; } -- 2.39.5