From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: linux-tip-commits@vger.kernel.org, linux-kernel@vger.kernel.org,
hpa@zytor.com, mingo@kernel.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, mgorman@suse.de, tglx@linutronix.de
Subject: Re: [tip:numa/core] sched/numa/mm: Improve migration
Date: Fri, 19 Oct 2012 16:38:39 +0200 [thread overview]
Message-ID: <1350657519.2768.27.camel@twins> (raw)
In-Reply-To: <20121019135122.GI31863@cmpxchg.org>
On Fri, 2012-10-19 at 09:51 -0400, Johannes Weiner wrote:
> Right now, unlike the traditional migration path, this breaks COW for
> every migration, but maybe you don't care about shared pages in the
> first place. And fixing that should be nothing more than grabbing the
> anon_vma lock and using rmap to switch more than one pmd over, right?
>
This patch was very much about getting _something_ rather than caring
(too much) about all the weird corner cases.
And yes, your suggestion sounds about right.
next prev parent reply other threads:[~2012-10-19 14:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-18 17:05 tip-bot for Peter Zijlstra
2012-10-19 13:51 ` Johannes Weiner
2012-10-19 14:36 ` Peter Zijlstra
2012-10-19 14:38 ` Peter Zijlstra [this message]
2012-10-19 14:43 ` Peter Zijlstra
2012-10-21 18:17 ` Ingo Molnar
2012-10-22 7:58 ` Mel Gorman
2012-10-22 10:36 ` Ingo Molnar
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=1350657519.2768.27.camel@twins \
--to=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=hannes@cmpxchg.org \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=mgorman@suse.de \
--cc=mingo@kernel.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.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
Powered by JetHome