Re: [PATCH 6/8] blk-mq-sched: add framework for MQ capable IO schedulers

[Jens Axboe]

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