On Mon, Sep 19, 2016 at 12:00:28PM -0700, Omar Sandoval wrote:
> On Sun, Sep 18, 2016 at 09:37:17AM +0200, Alexander Gordeev wrote:
> > CC: linux-block@vger.kernel.org
> > Signed-off-by: Alexander Gordeev <agord...@redhat.com>
>
> So set->nr_hw_queues is always >= q->nr_hw_queues, right?
That is what I conclude form blk_mq_realloc_hw_ctxs() code:
for (i = 0; i < set->nr_hw_queues; i++) {
...
}
...
q->nr_hw_queues = i;
> Reviewed-by: Omar Sandoval <osan...@fb.com>
>
> > ---
> > block/blk-mq.c | 9 +++------
> > 1 file changed, 3 insertions(+), 6 deletions(-)
> >
> > diff --git a/block/blk-mq.c b/block/blk-mq.c
> > index 9fbfe31..b2ef8f5 100644
> > --- a/block/blk-mq.c
> > +++ b/block/blk-mq.c
> > @@ -1681,16 +1681,13 @@ static void blk_mq_exit_hctx(struct request_queue
> > *q,
> > }
> >
> > static void blk_mq_exit_hw_queues(struct request_queue *q,
> > - struct blk_mq_tag_set *set, int nr_queue)
> > + struct blk_mq_tag_set *set)
> > {
> > struct blk_mq_hw_ctx *hctx;
> > unsigned int i;
> >
> > - queue_for_each_hw_ctx(q, hctx, i) {
> > - if (i == nr_queue)
> > - break;
> > + queue_for_each_hw_ctx(q, hctx, i)
> > blk_mq_exit_hctx(q, set, hctx, i);
> > - }
> > }
> >
> > static void blk_mq_free_hw_queues(struct request_queue *q,
> > @@ -2124,7 +2121,7 @@ void blk_mq_free_queue(struct request_queue *q)
> >
> > blk_mq_del_queue_tag_set(q);
> >
> > - blk_mq_exit_hw_queues(q, set, set->nr_hw_queues);
> > + blk_mq_exit_hw_queues(q, set);
> > blk_mq_free_hw_queues(q, set);
> > }
> >
> > --
> > 1.8.3.1
> >
> > --
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>
> --
> Omar
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