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From: Ming Lei <[email protected]>
To: Pavel Begunkov <[email protected]>
Cc: Jens Axboe <[email protected]>,
	[email protected], [email protected],
	Kevin Wolf <[email protected]>
Subject: Re: [PATCH V3 4/9] io_uring: move marking REQ_F_CQE_SKIP out of io_free_req()
Date: Tue, 11 Jun 2024 21:28:17 +0800	[thread overview]
Message-ID: <ZmhQ8X6q2RvKpn38@fedora> (raw)
In-Reply-To: <[email protected]>

On Mon, Jun 10, 2024 at 02:23:50AM +0100, Pavel Begunkov wrote:
> On 5/11/24 01:12, Ming Lei wrote:
> > Prepare for supporting sqe group, which requires to post group leader's
> > CQE after all members' CQEs are posted. For group leader request, we can't
> > do that in io_req_complete_post, and REQ_F_CQE_SKIP can't be set in
> > io_free_req().
> 
> Can you elaborate what exactly we can't do and why?

group leader's CQE is always posted after other members are posted.

> 
> > So move marking REQ_F_CQE_SKIP out of io_free_req().
> 
> That makes io_free_req() a very confusing function, it tells
> that it just frees the request but in reality can post a
> CQE. If you really need it, just add a new function.

io_free_req() never posts CQE.

This patch can help to move setting REQ_F_CQE_SKIP around
real post code, and it can make current code more readable.


Thanks, 
Ming


  reply	other threads:[~2024-06-11 13:28 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-11  0:12 [PATCH V3 0/9] io_uring: support sqe group and provide group kbuf Ming Lei
2024-05-11  0:12 ` [PATCH V3 1/9] io_uring: add io_link_req() helper Ming Lei
2024-05-11  0:12 ` [PATCH V3 2/9] io_uring: add io_submit_fail_link() helper Ming Lei
2024-05-11  0:12 ` [PATCH V3 3/9] io_uring: add helper of io_req_commit_cqe() Ming Lei
2024-06-10  1:18   ` Pavel Begunkov
2024-06-11 13:21     ` Ming Lei
2024-05-11  0:12 ` [PATCH V3 4/9] io_uring: move marking REQ_F_CQE_SKIP out of io_free_req() Ming Lei
2024-06-10  1:23   ` Pavel Begunkov
2024-06-11 13:28     ` Ming Lei [this message]
2024-06-16 18:08       ` Pavel Begunkov
2024-05-11  0:12 ` [PATCH V3 5/9] io_uring: support SQE group Ming Lei
2024-05-21  2:58   ` Ming Lei
2024-06-10  1:55     ` Pavel Begunkov
2024-06-11 13:32       ` Ming Lei
2024-06-16 18:14         ` Pavel Begunkov
2024-06-17  1:42           ` Ming Lei
2024-06-10  2:53   ` Pavel Begunkov
2024-06-13  1:45     ` Ming Lei
2024-06-16 19:13       ` Pavel Begunkov
2024-06-17  3:54         ` Ming Lei
2024-05-11  0:12 ` [PATCH V3 6/9] io_uring: support sqe group with members depending on leader Ming Lei
2024-05-11  0:12 ` [PATCH V3 7/9] io_uring: support providing sqe group buffer Ming Lei
2024-06-10  2:00   ` Pavel Begunkov
2024-06-12  0:22     ` Ming Lei
2024-05-11  0:12 ` [PATCH V3 8/9] io_uring/uring_cmd: support provide group kernel buffer Ming Lei
2024-05-11  0:12 ` [PATCH V3 9/9] ublk: support provide io buffer Ming Lei
2024-06-03  0:05 ` [PATCH V3 0/9] io_uring: support sqe group and provide group kbuf Ming Lei
2024-06-07 12:32   ` Pavel Begunkov

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