netdev - RE: [PATCH v2 for-next 3/3] io_uring: support multishot in recvmsg

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Date:   Thu, 14 Jul 2022 07:46:10 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Dylan Yudaken' <dylany@...com>, Jens Axboe <axboe@...nel.dk>,
        "Pavel Begunkov" <asml.silence@...il.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "io-uring@...r.kernel.org" <io-uring@...r.kernel.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "Kernel-team@...com" <Kernel-team@...com>
Subject: RE: [PATCH v2 for-next 3/3] io_uring: support multishot in recvmsg

From: Dylan Yudaken
> Sent: 13 July 2022 09:23
> 
> Similar to multishot recv, this will require provided buffers to be
> used. However recvmsg is much more complex than recv as it has multiple
> outputs. Specifically flags, name, and control messages.
...

Why is this any different from adding several 'recvmsg' requests
into the request ring?

IIUC the requests are all processed sequentially by a single thread.

	David

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