LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Josh Triplett <josh@joshtriplett.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: Pavel Begunkov <asml.silence@gmail.com>,
	io-uring@vger.kernel.org,
	"David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [RFC 0/4] open/accept directly into io_uring fixed file table
Date: Wed, 7 Jul 2021 08:04:24 -0700	[thread overview]
Message-ID: <YOXCeNs0waut1Jh1@localhost> (raw)
In-Reply-To: <48bd91bc-ba1a-1e69-03a1-3d6f913f96c3@kernel.dk>

On Wed, Jul 07, 2021 at 07:07:52AM -0600, Jens Axboe wrote:
> On 7/7/21 5:39 AM, Pavel Begunkov wrote:
> > Implement an old idea allowing open/accept io_uring requests to register
> > a newly created file as a io_uring's fixed file instead of placing it
> > into a task's file table. The switching is encoded in io_uring's SQEs
> > by setting sqe->buf_index/file_index, so restricted to 2^16-1. Don't
> > think we need more, but may be a good idea to scrap u32 somewhere
> > instead.
> > 
> > From the net side only needs a function doing __sys_accept4_file()
> > but not installing fd, see 2/4.
> > 
> > Only RFC for now, the new functionality is tested only for open yet.
> > I hope we can remember the author of the idea to add attribution.
> 
> Pretty sure the original suggester of this as Josh, CC'ed.

Thanks for working on this, Pavel!

Original thread at
https://lore.kernel.org/io-uring/20200715004209.GA334456@localhost/T/ in
case that helps.

  parent reply	other threads:[~2021-07-07 15:04 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-07 11:39 Pavel Begunkov
2021-07-07 11:39 ` [PATCH 1/4] io_uring: allow open directly into fixed fd table Pavel Begunkov
2021-07-07 11:39 ` [PATCH 2/4] net: add an accept helper not installing fd Pavel Begunkov
2021-07-07 11:39 ` [PATCH 3/4] io_uring: hand code io_accept()' fd installing Pavel Begunkov
2021-07-07 11:39 ` [PATCH 4/4] io_uring: accept directly into fixed file table Pavel Begunkov
2021-07-07 13:07 ` [RFC 0/4] open/accept directly into io_uring " Jens Axboe
2021-07-07 13:59   ` Stefan Metzmacher
2021-07-07 15:01     ` Jens Axboe
2021-07-07 15:04   ` Josh Triplett [this message]
2021-08-13 16:30     ` Pavel Begunkov
2021-07-21  7:11 ` Hao Xu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YOXCeNs0waut1Jh1@localhost \
    --to=josh@joshtriplett.org \
    --cc=asml.silence@gmail.com \
    --cc=axboe@kernel.dk \
    --cc=davem@davemloft.net \
    --cc=io-uring@vger.kernel.org \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --subject='Re: [RFC 0/4] open/accept directly into io_uring fixed file table' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).