linux-kernel - Re: [ofa-general] Re: [patch 0/6] MMU Notifiers V6

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Message-ID: <20080209075556.63062452@bree.surriel.com>
Date:	Sat, 9 Feb 2008 07:55:56 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Christoph Lameter <clameter@....com>
Cc:	Andrea Arcangeli <andrea@...ranet.com>,
	Roland Dreier <rdreier@...co.com>, a.p.zijlstra@...llo.nl,
	izike@...ranet.com, steiner@....com, linux-kernel@...r.kernel.org,
	avi@...ranet.com, linux-mm@...ck.org, daniel.blueman@...drics.com,
	Robin Holt <holt@....com>, general@...ts.openfabrics.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	kvm-devel@...ts.sourceforge.net
Subject: Re: [ofa-general] Re: [patch 0/6] MMU Notifiers V6

On Fri, 8 Feb 2008 18:16:16 -0800 (PST)
Christoph Lameter <clameter@....com> wrote:
> On Sat, 9 Feb 2008, Andrea Arcangeli wrote:
> 
> > The VM shouldn't break if try_to_unmap doesn't actually make the page
> > freeable for whatever reason. Permanent pins shouldn't happen anyway,
> 
> VM is livelocking if too many page are pinned that way right now.

> Rik has a patchset under development that addresses issues like this

PG_mlock is on the way and can easily be reused for this, too.

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