From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Lameter <clameter@sgi.com>
Subject: [ofa-general] Re: [patch 5/9] Convert anon_vma lock to rw_sem and
	refcount
Date: Wed, 2 Apr 2008 14:56:25 -0700 (PDT)
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To: Andrea Arcangeli <andrea@qumranet.com>
Cc: steiner@sgi.com, Peter Zijlstra <a.p.zijlstra@chello.nl>, linux-mm@kvack.org, Izik Eidus <izike@qumranet.com>, Kanoj Sarcar <kanojsarcar@yahoo.com>, Roland Dreier <rdreier@cisco.com>, linux-kernel@vger.kernel.org, Avi Kivity <avi@qumranet.com>, kvm-devel@lists.sourceforge.net, daniel.blueman@quadrics.com, Robin Holt <holt@sgi.com>, general@lists.openfabrics.org, Hugh Dickins <hugh@veritas.com>
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On Wed, 2 Apr 2008, Andrea Arcangeli wrote:

> paging), hence the slowdown. What you benchmarked is the write side,
> which is also the fast path when the system is heavily CPU bound. I've
> to say aim is a great benchmark to test this regression.

I am a bit surprised that brk performance is that important. There may be 
other measurement that have to be made to assess how this would impact a 
real load.