Date: Mon, 3 Mar 2008 22:15:32 +0100
From: Andrea Arcangeli <andrea@qumranet.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Nick Piggin <npiggin@suse.de>, Jack Steiner <steiner@sgi.com>,
       akpm@linux-foundation.org, Robin Holt <holt@sgi.com>,
       Avi Kivity <avi@qumranet.com>, Izik Eidus <izike@qumranet.com>,
       kvm-devel@lists.sourceforge.net,
       Peter Zijlstra <a.p.zijlstra@chello.nl>, general@lists.openfabrics.org,
       Steve Wise <swise@opengridcomputing.com>,
       Roland Dreier <rdreier@cisco.com>, Kanoj Sarcar <kanojsarcar@yahoo.com>,
       linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       daniel.blueman@quadrics.com
Subject: Re: [PATCH] mmu notifiers #v8
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On Mon, Mar 03, 2008 at 11:01:22AM -0800, Christoph Lameter wrote:
> API still has rcu issues and the example given for making things sleepable 
> is only working for the aging callback. The most important callback is for 
> try_to_unmao and page_mkclean. This means the API is still not generic 
> enough and likely not extendable as needed in its present form.

I converted only one of those _notify as an example of how it should
be done, because I assumed you volunteer to convert the other ones
yourself during .26. It's useless to convert all of them right now,
because the i_mmap_lock and anon_vma locks are still going to be
spinlocks in .25.
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