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From: Marek Majkowski <marek@cloudflare.com>
To: axboe@kernel.dk
Cc: avi@scylladb.com, hch@lst.de, jannh@google.com,
	jmoyer@redhat.com, linux-aio@kvack.org,
	linux-api@vger.kernel.org, linux-block@vger.kernel.org,
	viro@ZenIV.linux.org.uk
Subject: Re: [PATCHSET v15] io_uring IO interface
Date: Thu, 21 Feb 2019 13:10:22 +0100
Message-ID: <20190221121022.7867-1-marek@cloudflare.com> (raw)
In-Reply-To: <20190211190049.7888-1-axboe@kernel.dk>

> From: Jens Axboe <axboe@kernel.dk>
> Subject: [PATCHSET v15] io_uring IO interface
> Message-ID: <20190211190049.7888-1-axboe@kernel.dk> (raw)
>
> Some final tweaks, mostly cosmetic, but also two important fixes:
> 
> 1) Ensure that we account the skb appropriately against the socket.
>    Some network config options apparently return is an skb with
>    ->truesize != 0 when allocated with a size of 0, ensure we add
>    those as references against sock->sk_wmem_alloc. Reported by
>    Matt Mullins.

Jens,

I tried using io_uring with network sockets. It seem to be doing the
right thing. One bit is missing though: "flags" as in recv(2).

In perfect world I would like to specify at least:
 - MSG_DONTWAIT
 - MSG_WAITALL
 - MSG_NOSIGNAL

Right now, unless I'm missing something, io_uring_sqe doesn't have a
place where we could store these. "flags" is needed for any
non-trivial network I/O.

A separate discussion is about io_uring supporting more complex
network stuff in future like 'struct msghdr', MSG_ERRQUEUE or CMSG.

Cheers,
   Marek

  parent reply index

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-11 19:00 Jens Axboe
2019-02-11 19:00 ` [PATCH 01/19] fs: add an iopoll method to struct file_operations Jens Axboe
2019-02-11 19:00 ` [PATCH] io_uring: add io_uring_event cache hit information Jens Axboe
2019-02-11 19:00 ` [PATCH 02/19] block: wire up block device iopoll method Jens Axboe
2019-02-11 19:00 ` [PATCH 03/19] block: add bio_set_polled() helper Jens Axboe
2019-02-11 19:00 ` [PATCH 04/19] iomap: wire up the iopoll method Jens Axboe
2019-02-11 19:00 ` [PATCH 05/19] Add io_uring IO interface Jens Axboe
2019-02-11 19:00 ` [PATCH 06/19] io_uring: add fsync support Jens Axboe
2019-02-11 19:00 ` [PATCH 07/19] io_uring: support for IO polling Jens Axboe
2019-02-11 19:00 ` [PATCH 08/19] fs: add fget_many() and fput_many() Jens Axboe
2019-02-11 19:00 ` [PATCH 09/19] io_uring: use fget/fput_many() for file references Jens Axboe
2019-02-11 19:00 ` [PATCH 10/19] io_uring: batch io_kiocb allocation Jens Axboe
2019-02-11 19:00 ` [PATCH 11/19] block: implement bio helper to add iter bvec pages to bio Jens Axboe
2019-02-20 22:58   ` Ming Lei
2019-02-21 17:45     ` Jens Axboe
2019-02-26  3:46       ` Eric Biggers
2019-02-26  4:34         ` Jens Axboe
2019-02-26 15:54           ` Jens Axboe
2019-02-27  1:21             ` Ming Lei
2019-02-27  1:47               ` Jens Axboe
2019-02-27  1:53                 ` Ming Lei
2019-02-27  1:57                   ` Jens Axboe
2019-02-27  2:21                     ` Ming Lei
2019-02-27  2:28                       ` Jens Axboe
2019-02-27  2:37                         ` Ming Lei
2019-02-27  2:43                           ` Jens Axboe
2019-02-27  3:09                             ` Ming Lei
2019-02-27  3:37                               ` Jens Axboe
2019-02-27  3:43                                 ` Jens Axboe
2019-02-27  3:44                                 ` Ming Lei
2019-02-27  4:05                                   ` Jens Axboe
2019-02-27  4:06                                     ` Jens Axboe
2019-02-27 19:42                                       ` Christoph Hellwig
2019-02-28  8:37                                         ` Ming Lei
2019-02-27 23:35                         ` Ming Lei
2019-03-08  7:55                         ` Christoph Hellwig
2019-03-08  9:12                           ` Ming Lei
2019-03-08  8:18                     ` Christoph Hellwig
2019-02-11 19:00 ` [PATCH 12/19] io_uring: add support for pre-mapped user IO buffers Jens Axboe
2019-02-19 19:08   ` Jann Horn
2019-02-22 22:29     ` Jens Axboe
2019-02-11 19:00 ` [PATCH 13/19] net: split out functions related to registering inflight socket files Jens Axboe
2019-02-11 19:00 ` [PATCH 14/19] io_uring: add file set registration Jens Axboe
2019-02-19 16:12   ` Jann Horn
2019-02-22 22:29     ` Jens Axboe
2019-02-11 19:00 ` [PATCH 15/19] io_uring: add submission polling Jens Axboe
2019-02-11 19:00 ` [PATCH 16/19] io_uring: add io_kiocb ref count Jens Axboe
2019-02-11 19:00 ` [PATCH 17/19] io_uring: add support for IORING_OP_POLL Jens Axboe
2019-02-11 19:00 ` [PATCH 18/19] io_uring: allow workqueue item to handle multiple buffered requests Jens Axboe
2019-02-11 19:00 ` [PATCH 19/19] io_uring: add io_uring_event cache hit information Jens Axboe
2019-02-21 12:10 ` Marek Majkowski [this message]
2019-02-21 17:48   ` [PATCHSET v15] io_uring IO interface Jens Axboe
2019-02-22 15:01     ` Marek Majkowski
2019-02-22 22:32       ` Jens Axboe

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