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SubjectRe: [PATCH 6/8] blk-mq-sched: add framework for MQ capable IO schedulers
On Tue, Dec 20 2016, Paolo Valente wrote:
> > + else
> > + rq = __blk_mq_alloc_request(data, op);
> > +
> > + if (rq) {
> > + rq->elv.icq = NULL;
> > + if (e && e->type->icq_cache)
> > + blk_mq_sched_assign_ioc(q, rq, bio);
>
> bfq needs rq->elv.icq to be consistent in bfq_get_request, but the
> needed initialization seems to occur only after mq.get_request is
> invoked.

Can you do it from get/put_rq_priv? The icq is assigned there. If not,
we can redo this part, not a big deal.

--
Jens Axboe

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