From: Ming Lei <ming.lei@redhat.com>
To: Mike Snitzer <snitzer@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
Jeffle Xu <jefflexu@linux.alibaba.com>,
dm-devel@redhat.com
Subject: Re: [RFC PATCH V2 04/13] block: create io poll context for submission and poll task
Date: Tue, 23 Mar 2021 19:23:32 +0800 [thread overview]
Message-ID: <YFnPtHiFnojajCUK@T590> (raw)
In-Reply-To: <20210319170509.GB9938@redhat.com>
On Fri, Mar 19, 2021 at 01:05:09PM -0400, Mike Snitzer wrote:
> On Thu, Mar 18 2021 at 12:48pm -0400,
> Ming Lei <ming.lei@redhat.com> wrote:
>
> > Create per-task io poll context for both IO submission and poll task
> > if the queue is bio based and supports polling.
> >
> > This io polling context includes two queues:
> 1) submission queue(sq) for storing HIPRI bio submission result(cookie)
> and the bio, written by submission task and read by poll task.
BTW, V2 has switched to store bio only, and cookie is actually stored in
side bio.
> 2) polling queue(pq) for holding data moved from sq, only used in poll
> context for running bio polling.
>
> (nit, but it just reads a bit clearer to enumerate the 2 queues)
OK.
--
Ming
next prev parent reply other threads:[~2021-03-23 11:24 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-18 16:48 [RFC PATCH V2 00/13] block: support bio based io polling Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 01/13] block: add helper of blk_queue_poll Ming Lei
2021-03-19 16:52 ` Mike Snitzer
2021-03-23 11:17 ` Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 02/13] block: add one helper to free io_context Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 03/13] block: add helper of blk_create_io_context Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 04/13] block: create io poll context for submission and poll task Ming Lei
2021-03-19 17:05 ` Mike Snitzer
2021-03-23 11:23 ` Ming Lei [this message]
2021-03-18 16:48 ` [RFC PATCH V2 05/13] block: add req flag of REQ_TAG Ming Lei
2021-03-19 7:59 ` JeffleXu
2021-03-19 8:48 ` Ming Lei
2021-03-19 9:47 ` JeffleXu
2021-03-19 17:38 ` Mike Snitzer
2021-03-23 11:26 ` Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 06/13] block: add new field into 'struct bvec_iter' Ming Lei
2021-03-19 17:44 ` Mike Snitzer
2021-03-23 11:29 ` Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 07/13] block/mq: extract one helper function polling hw queue Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 08/13] block: prepare for supporting bio_list via other link Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 09/13] block: use per-task poll context to implement bio based io poll Ming Lei
2021-03-18 17:26 ` Mike Snitzer
2021-03-18 17:38 ` [dm-devel] " Mike Snitzer
2021-03-19 0:30 ` Ming Lei
2021-03-19 9:38 ` JeffleXu
2021-03-19 13:46 ` Ming Lei
2021-03-20 5:56 ` JeffleXu
2021-03-23 11:39 ` Ming Lei
2021-03-19 18:38 ` Mike Snitzer
2021-03-23 11:55 ` Ming Lei
2021-03-23 3:46 ` Sagi Grimberg
2021-03-23 12:01 ` Ming Lei
2021-03-23 16:54 ` Sagi Grimberg
2021-03-24 0:10 ` Ming Lei
2021-03-24 15:43 ` Sagi Grimberg
2021-03-18 16:48 ` [RFC PATCH V2 10/13] block: add queue_to_disk() to get gendisk from request_queue Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 11/13] block: add poll_capable method to support bio-based IO polling Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 12/13] dm: support IO polling for bio-based dm device Ming Lei
2021-03-18 16:48 ` [RFC PATCH V2 13/13] blk-mq: limit hw queues to be polled in each blk_poll() Ming Lei
2021-03-19 5:50 ` [RFC PATCH V2 00/13] block: support bio based io polling JeffleXu
2021-03-19 18:45 ` Mike Snitzer
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