> +int blk_mq_poll(struct request_queue *q, blk_qc_t cookie, struct io_comp_batch *iob, It would be nice to fix the overly long line while you're at it. > + unsigned int flags) > +{ > + return blk_hctx_poll(q, blk_qc_to_hctx(q, cookie), iob, flags); > +} But looking at the two callers of blk_mq_poll, shouldn't one use rq->mq_hctx to get the hctx anyway instead of doing repeated blk_qc_to_hctx in the polling loop? We could then just open code blk_qc_to_hctx in the remaining one. The rest looks good to me.