linux-kernel - Re: [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear)

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Message-ID: <20070307151040.GA2440@ccure.user-mode-linux.org>
Date:	Wed, 7 Mar 2007 10:10:40 -0500
From:	Jeff Dike <jdike@...toit.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Nick Piggin <npiggin@...e.de>, Miklos Szeredi <miklos@...redi.hu>,
	akpm@...ux-foundation.org, mingo@...e.hu, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, benh@...nel.crashing.org
Subject: Re: [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear)

On Wed, Mar 07, 2007 at 02:52:12PM +0100, Peter Zijlstra wrote:
> > Well I don't think UML uses nonlinear yet anyway, does it? Can they
> > make do with restricting nonlinear to mlocked vmas, I wonder? Probably
> > not.
> 
> I think it does, but lets ask, Jeff?

Nope, UML needs to be able to change permissions as well as locations.

Would be nice, though, there are apparently nice UML speedups with it.

				Jeff

-- 
Work email - jdike at linux dot intel dot com
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