linux-kernel - Re: [PATCH 03 of 11] invalidate

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Message-ID: <20080507175705.GE18260@duo.random>
Date:	Wed, 7 May 2008 19:57:05 +0200
From:	Andrea Arcangeli <andrea@...ranet.com>
To:	Rik van Riel <riel@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <clameter@....com>,
	Jack Steiner <steiner@....com>, Robin Holt <holt@....com>,
	Nick Piggin <npiggin@...e.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	kvm-devel@...ts.sourceforge.net,
	Kanoj Sarcar <kanojsarcar@...oo.com>,
	Roland Dreier <rdreier@...co.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	linux-kernel@...r.kernel.org, Avi Kivity <avi@...ranet.com>,
	linux-mm@...ck.org, general@...ts.openfabrics.org,
	Hugh Dickins <hugh@...itas.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Anthony Liguori <aliguori@...ibm.com>,
	Chris Wright <chrisw@...hat.com>,
	Marcelo Tosatti <marcelo@...ck.org>,
	Eric Dumazet <dada1@...mosbay.com>,
	"Paul E. McKenney" <paulmck@...ibm.com>
Subject: Re: [PATCH 03 of 11] invalidate_page outside PT lock

On Wed, May 07, 2008 at 01:39:43PM -0400, Rik van Riel wrote:
> Would it be an idea to merge them into one, so the first patch
> introduces the right conventions directly?

The only reason this isn't merged into one, is that this requires
non obvious (not difficult though) to the core VM code. I wanted to
keep an obviously safe approach for 2.6.26. The other conventions are
only needed by XPMEM and XPMEM can't work without all other patches anyway.
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