>From a quick look the code seems reasonably sensible here,
but any chance we could have this in common code?
> +static bool nvme_fail_queue_request(struct request *req, void *data, bool reserved)
> +{
> + struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
> + struct nvme_queue *nvmeq = iod->nvmeq;
> +
> + if (!test_bit(NVMEQ_ENABLED, &nvmeq->flags))
> + blk_mq_end_request(req, BLK_STS_IOERR);
> + return true;
> +}
The only thing not purely block layer here is the enabled flag.
So if we had a per-hctx enabled flag we could lift this out of nvme,
and hopefully start reusing it in other drivers.
