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:numa/core] sched/numa/mm: Improve migration 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
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