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Subject: Re: [PATCH 13/35] autonuma: add page structure fields
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Thu, 31 May 2012 20:18:59 +0200
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To: Andrea Arcangeli <aarcange@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>, Rik van Riel <riel@redhat.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Hillf Danton <dhillf@gmail.com>, Dan Smith <danms@us.ibm.com>, Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>, Paul Turner <pjt@google.com>, Suresh Siddha <suresh.b.siddha@intel.com>, Mike Galbraith <efault@gmx.de>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Lai Jiangshan <laijs@cn.fujitsu.com>, Bharata B Rao <bharata.rao@gmail.com>, Lee Schermerhorn <Lee.Schermerhorn@hp.com>, Johannes Weiner <hannes@cmpxchg.org>, Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>, Christoph Lameter <cl@linux.com>

On Wed, 2012-05-30 at 15:49 +0200, Andrea Arcangeli wrote:
>=20
> I'm thinking about it but probably reducing the page_autonuma to one
> per pmd is going to be the simplest solution considering by default we
> only track the pmd anyway.=20

Do also consider that some archs have larger base page size. So their
effective PMD size is increased as well.

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