Date: Sat, 9 Feb 2008 07:55:56 -0500
From: Rik van Riel <riel@redhat.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrea Arcangeli <andrea@qumranet.com>, Roland Dreier <rdreier@cisco.com>,
       a.p.zijlstra@chello.nl, izike@qumranet.com, steiner@sgi.com,
       linux-kernel@vger.kernel.org, avi@qumranet.com, linux-mm@kvack.org,
       daniel.blueman@quadrics.com, Robin Holt <holt@sgi.com>,
       general@lists.openfabrics.org,
       Andrew Morton <akpm@linux-foundation.org>,
       kvm-devel@lists.sourceforge.net
Subject: Re: [ofa-general] Re: [patch 0/6] MMU Notifiers V6
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On Fri, 8 Feb 2008 18:16:16 -0800 (PST)
Christoph Lameter <clameter@sgi.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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