From: Dave Chinner <david@fromorbit.com>
To: Sean Noonan <Sean.Noonan@twosigma.com>
Cc: 'Christoph Hellwig' <hch@infradead.org>,
'Michel Lespinasse' <walken@google.com>,
"'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>,
Martin Bligh <Martin.Bligh@twosigma.com>,
Trammell Hudson <Trammell.Hudson@twosigma.com>,
Christos Zoulas <Christos.Zoulas@twosigma.com>,
"'linux-xfs@oss.sgi.com'" <linux-xfs@oss.sgi.com>,
Stephen Degler <Stephen.Degler@twosigma.com>,
"'linux-mm@kvack.org'" <linux-mm@kvack.org>
Subject: Re: XFS memory allocation deadlock in 2.6.38
Date: Wed, 30 Mar 2011 12:44:00 +1100 [thread overview]
Message-ID: <20110330014400.GK3008@dastard> (raw)
In-Reply-To: <081DDE43F61F3D43929A181B477DCA95639B5364@MSXAOA6.twosigma.com>
On Tue, Mar 29, 2011 at 09:32:06PM -0400, Sean Noonan wrote:
> > Ok, so that looks like root cause of the problem. can you try the
> > patch below to see if it fixes the problem (without any other
> > patches applied or reverted).
>
> It looks like this does fix the deadlock problem. However, it
> appears to come at the price of significantly higher mmap startup
> costs.
It shouldn't make any difference to startup costs with the current
code uses read faults to populate the region and that doesn't cause
any allocation to occur and hence this code is not executed during
the populate phase.
Is this repeatable or is it just a one-off result?
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2011-03-30 1:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <081DDE43F61F3D43929A181B477DCA95639B52FD@MSXAOA6.twosigma.com>
[not found] ` <081DDE43F61F3D43929A181B477DCA95639B5327@MSXAOA6.twosigma.com>
2011-03-24 17:43 ` XFS memory allocation deadlock in 2.6.38 Christoph Hellwig
2011-03-24 23:45 ` Michel Lespinasse
2011-03-28 14:58 ` Sean Noonan
2011-03-28 21:06 ` Michel Lespinasse
2011-03-28 21:34 ` Sean Noonan
2011-03-29 0:25 ` Michel Lespinasse
2011-03-29 1:51 ` Dave Chinner
2011-03-29 2:49 ` Sean Noonan
2011-03-29 19:05 ` Sean Noonan
2011-03-29 19:24 ` 'Christoph Hellwig'
2011-03-29 19:39 ` Johannes Weiner
2011-03-29 19:43 ` 'Christoph Hellwig'
2011-03-29 19:46 ` Sean Noonan
2011-03-29 20:02 ` 'Christoph Hellwig'
2011-03-29 20:23 ` Sean Noonan
2011-03-29 22:42 ` Dave Chinner
2011-03-29 22:45 ` Sean Noonan
2011-03-30 9:23 ` 'Christoph Hellwig'
2011-03-29 19:54 ` Sean Noonan
2011-03-30 0:09 ` Dave Chinner
2011-03-30 1:32 ` Sean Noonan
2011-03-30 1:44 ` Dave Chinner [this message]
2011-03-30 1:52 ` Sean Noonan
2011-03-30 9:30 ` 'Christoph Hellwig'
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=20110330014400.GK3008@dastard \
--to=david@fromorbit.com \
--cc=Christos.Zoulas@twosigma.com \
--cc=Martin.Bligh@twosigma.com \
--cc=Sean.Noonan@twosigma.com \
--cc=Stephen.Degler@twosigma.com \
--cc=Trammell.Hudson@twosigma.com \
--cc=hch@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-xfs@oss.sgi.com \
--cc=walken@google.com \
/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;
as well as URLs for NNTP newsgroup(s).