From: Christoph Hellwig <[email protected]>
To: Jens Axboe <[email protected]>
Cc: Christoph Hellwig <[email protected]>,
[email protected], [email protected],
Hannes Reinecke <[email protected]>
Subject: Re: [PATCH 4/4] nvme: add support for mq_ops->queue_rqs()
Date: Thu, 16 Dec 2021 08:15:58 -0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On Thu, Dec 16, 2021 at 08:45:46AM -0700, Jens Axboe wrote:
> On 12/16/21 2:08 AM, Christoph Hellwig wrote:
> > On Wed, Dec 15, 2021 at 09:24:21AM -0700, Jens Axboe wrote:
> >> + spin_lock(&nvmeq->sq_lock);
> >> + while (!rq_list_empty(*rqlist)) {
> >> + struct request *req = rq_list_pop(rqlist);
> >> + struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
> >> +
> >> + memcpy(nvmeq->sq_cmds + (nvmeq->sq_tail << nvmeq->sqes),
> >> + absolute_pointer(&iod->cmd), sizeof(iod->cmd));
> >> + if (++nvmeq->sq_tail == nvmeq->q_depth)
> >> + nvmeq->sq_tail = 0;
> >
> > So this doesn't even use the new helper added in patch 2? I think this
> > should call nvme_sq_copy_cmd().
>
> But you NAK'ed that one? It definitely should use that helper, so I take it
> you are fine with it then if we do it here too? That would make 3 call sites,
> and I still do think the helper makes sense...
I explained two times that the new helpers is fine as long as you open
code nvme_submit_cmd in its two callers as it now is a trivial wrapper.
next prev parent reply other threads:[~2021-12-16 16:16 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-15 16:24 [PATCHSET v3 0/4] Add support for list issue Jens Axboe
2021-12-15 16:24 ` [PATCH 1/4] block: add mq_ops->queue_rqs hook Jens Axboe
2021-12-16 9:01 ` Christoph Hellwig
2021-12-20 20:36 ` Keith Busch
2021-12-20 20:47 ` Jens Axboe
2021-12-15 16:24 ` [PATCH 2/4] nvme: split command copy into a helper Jens Axboe
2021-12-16 9:01 ` Christoph Hellwig
2021-12-16 12:17 ` Max Gurtovoy
2021-12-15 16:24 ` [PATCH 3/4] nvme: separate command prep and issue Jens Axboe
2021-12-16 9:02 ` Christoph Hellwig
2021-12-15 16:24 ` [PATCH 4/4] nvme: add support for mq_ops->queue_rqs() Jens Axboe
2021-12-15 17:29 ` Keith Busch
2021-12-15 20:27 ` Jens Axboe
2021-12-16 9:08 ` Christoph Hellwig
2021-12-16 13:06 ` Max Gurtovoy
2021-12-16 15:48 ` Jens Axboe
2021-12-16 16:00 ` Max Gurtovoy
2021-12-16 16:05 ` Jens Axboe
2021-12-16 16:19 ` Max Gurtovoy
2021-12-16 16:25 ` Jens Axboe
2021-12-16 16:34 ` Max Gurtovoy
2021-12-16 16:36 ` Jens Axboe
2021-12-16 16:57 ` Max Gurtovoy
2021-12-16 17:16 ` Jens Axboe
2021-12-19 12:14 ` Max Gurtovoy
2021-12-19 14:48 ` Jens Axboe
2021-12-20 10:11 ` Max Gurtovoy
2021-12-20 14:19 ` Jens Axboe
2021-12-20 14:25 ` Jens Axboe
2021-12-20 15:29 ` Max Gurtovoy
2021-12-20 16:34 ` Jens Axboe
2021-12-20 18:48 ` Max Gurtovoy
2021-12-20 18:58 ` Jens Axboe
2021-12-21 10:20 ` Max Gurtovoy
2021-12-21 15:23 ` Jens Axboe
2021-12-21 15:29 ` Max Gurtovoy
2021-12-21 15:33 ` Jens Axboe
2021-12-21 16:08 ` Max Gurtovoy
2021-12-16 15:45 ` Jens Axboe
2021-12-16 16:15 ` Christoph Hellwig [this message]
2021-12-16 16:27 ` Jens Axboe
2021-12-16 16:30 ` Christoph Hellwig
2021-12-16 16:36 ` Jens Axboe
2021-12-16 13:02 ` Max Gurtovoy
2021-12-16 15:59 ` Jens Axboe
2021-12-16 16:06 ` Max Gurtovoy
2021-12-16 16:09 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2021-12-16 16:05 [PATCHSET v4 0/4] Add support for list issue Jens Axboe
2021-12-16 16:05 ` [PATCH 4/4] nvme: add support for mq_ops->queue_rqs() Jens Axboe
2021-12-16 16:38 [PATCHSET v5 0/4] Add support for list issue Jens Axboe
2021-12-16 16:39 ` [PATCH 4/4] nvme: add support for mq_ops->queue_rqs() Jens Axboe
2021-12-16 17:53 ` Christoph Hellwig
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