From: Andrew Morton <akpm@linux-foundation.org>
To: Daniel Ehrenberg <dehrenberg@google.com>
Cc: Jens Axboe <axboe@kernel.dk>, Jeff Moyer <jmoyer@redhat.com>,
linux-kernel@vger.kernel.org, linux-aio@kvack.org
Subject: Re: Approaches to making io_submit not block
Date: Tue, 30 Aug 2011 15:54:38 -0700 [thread overview]
Message-ID: <20110830155438.bc31ab99.akpm@linux-foundation.org> (raw)
In-Reply-To: <CAAK6Zt20MNqgydQTgN3O46p+OZxR9Ta9=MfqRrw=w+y77-75Yw@mail.gmail.com>
On Tue, 30 Aug 2011 15:45:35 -0700
Daniel Ehrenberg <dehrenberg@google.com> wrote:
> >> Not quite sure, and after working on them and fixing thing up, I don't
> >> even think they are that complex or intrusive (which I think otherwise
> >> would've been the main objection). Andrew may know/remember.
> >
> > Boy, that was a long time ago. __I was always unhappy with the patches
> > because of the amount of additional code/complexity they added.
> >
> > Then the great syslets/threadlets design session happened and it was
> > expected that such a facility would make special async handling for AIO
> > unnecessary. __Then syslets/threadlets didn't happen.
>
> Do you think we could accomplish the goals with less additional
> code/complexity? It looks like the latest version of the patch set
> wasn't so invasive.
>
> If syslets/threadlets aren't happening, should these patches be
> reconsidered for inclusion in the kernel?
I haven't seen any demand at all for the feature in many years. That
doesn't mean that there _isn't_ any demand - perhaps everyone got
exhausted.
If there is demand then that should be described and circulated, see
how much interest there is in resurrecting the effort.
And, of course, the patches should be dragged out and looked at - it's
been a number of years now.
Also, glibc has userspace for POSIX AIO. A successful kernel-based
implementation would result in glibc migrating away from its current
implementation. So we should work with the glibc developers on ensuring
that the migration can happen.
next prev parent reply other threads:[~2011-08-30 22:55 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-29 17:33 Approaches to making io_submit not block Daniel Ehrenberg
2011-08-30 5:32 ` Christoph Hellwig
2011-08-30 21:51 ` Daniel Ehrenberg
2011-08-31 5:26 ` Christoph Hellwig
2011-08-31 17:08 ` Andi Kleen
2011-08-31 21:00 ` Daniel Ehrenberg
2011-08-31 21:15 ` Andi Kleen
2011-09-01 4:18 ` Dave Chinner
2011-09-01 4:39 ` Andi Kleen
2011-09-01 6:54 ` Dave Chinner
2011-09-02 13:08 ` Ted Ts'o
2011-09-02 13:10 ` Christoph Hellwig
2011-09-01 3:39 ` Dave Chinner
2011-09-01 4:20 ` Christoph Hellwig
2011-08-30 7:02 ` Andi Kleen
[not found] ` <CAAK6Zt0Sh1GdEOb-tNf2FGXJs=e1Jbcqew13R_GdTqrv6vW97w@mail.gmail.com>
[not found] ` <x49k49uk2ox.fsf@segfault.boston.devel.redhat.com>
[not found] ` <4E5D5817.6040704@kernel.dk>
2011-08-30 22:19 ` Daniel Ehrenberg
2011-08-30 22:32 ` Jens Axboe
2011-08-30 22:41 ` Andrew Morton
2011-08-30 22:45 ` Daniel Ehrenberg
2011-08-30 22:54 ` Andrew Morton [this message]
2011-08-30 23:03 ` Jeremy Allison
2011-08-30 23:11 ` Andrew Morton
2011-08-31 11:04 ` Ulrich Drepper
2011-08-31 16:59 ` Jeremy Allison
2011-09-01 11:14 ` Ulrich Drepper
2011-09-01 15:58 ` Jeremy Allison
2011-09-01 16:04 ` Christoph Hellwig
2011-09-01 16:15 ` Jeremy Allison
2011-09-01 16:23 ` Christoph Hellwig
2011-09-01 16:31 ` Jeremy Allison
2011-09-01 16:34 ` Christoph Hellwig
2011-09-01 16:34 ` Jeremy Allison
2011-09-01 16:45 ` Christoph Hellwig
2011-09-01 16:57 ` Jeremy Allison
2011-08-31 5:34 ` Christoph Hellwig
2011-08-31 6:04 ` guy keren
2011-08-31 23:16 ` Daniel Ehrenberg
2011-08-31 23:48 ` guy keren
2011-08-31 23:59 ` Daniel Ehrenberg
2011-08-31 15:45 ` Gleb Natapov
2011-08-31 16:02 ` Avi Kivity
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=20110830155438.bc31ab99.akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=axboe@kernel.dk \
--cc=dehrenberg@google.com \
--cc=jmoyer@redhat.com \
--cc=linux-aio@kvack.org \
--cc=linux-kernel@vger.kernel.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox