linux-kernel - Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu notifier methods to sleep (#v9 was 1/4)

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Message-ID: <Pine.LNX.4.64.0803071211340.6815@schroedinger.engr.sgi.com>
Date:	Fri, 7 Mar 2008 12:12:12 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Andrea Arcangeli <andrea@...ranet.com>
cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jack Steiner <steiner@....com>, Nick Piggin <npiggin@...e.de>,
	akpm@...ux-foundation.org, Robin Holt <holt@....com>,
	Avi Kivity <avi@...ranet.com>, kvm-devel@...ts.sourceforge.net,
	general@...ts.openfabrics.org,
	Steve Wise <swise@...ngridcomputing.com>,
	Roland Dreier <rdreier@...co.com>,
	Kanoj Sarcar <kanojsarcar@...oo.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	daniel.blueman@...drics.com
Subject: Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu notifier
 methods to sleep (#v9 was 1/4)

On Fri, 7 Mar 2008, Andrea Arcangeli wrote:

> PS. this problem I pointed out of _end possibly called before _begin
> is the same for #v9 and EMM V1 as far as I can tell.

Hmmm.. We could just push that on the driver saying that is has to 
tolerate it. Otherwise how can we solve this?

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