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blk-mq: update nr_requests when switching to 'none' scheduler 

Now we setup q->nr_requests when switching to one new scheduler,
but not do it for 'none', then q->nr_requests may not be correct
for 'none'.

This patch fixes this issue by always updating 'nr_requests' when
switching to 'none'.

Cc: Marco Patalano <mpatalan@redhat.com>
Cc: "Ewan D. Milne" <emilne@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2018-06-02 15:18:09 +08:00 committed by Jens Axboe
parent cd4a4ae468
commit 32a50fabb3
1 changed files with 1 additions and 0 deletions
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1
block/blk-mq-sched.c
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@ -585,6 +585,7 @@ int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e)
if (!e) {
q->elevator = NULL;
q->nr_requests = q->tag_set->queue_depth;
return 0;
}