linux-kernel - Re: [patch 20/20] Add apply_to_page_range() which applies a function to a pte range.

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Date:	Thu, 19 Apr 2007 16:30:13 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andi Kleen <ak@...e.de>, Andrew Morton <akpm@...ux-foundation.org>,
	virtualization@...ts.osdl.org, lkml <linux-kernel@...r.kernel.org>,
	Ian Pratt <ian.pratt@...source.com>,
	Christian Limpach <Christian.Limpach@...cam.ac.uk>,
	Chris Wright <chrisw@...s-sol.org>,
	Christoph Lameter <clameter@....com>,
	Matt Mackall <mpm@...te.org>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [patch 20/20] Add apply_to_page_range() which applies a function to a pte range.

On Thu, Apr 19, 2007 at 02:37:53PM -0700, Jeremy Fitzhardinge wrote:
> Matt Mackall wrote:
> > Haven't thought a huge amount about that. Perhaps it's best done with
> > the level 3 callback?
> >   
> 
> Level 2, I think, assuming you count the pte pages as level 1.  I think
> it can be dealt with, so long as it correctly skips level 1 callbacks
> for superpages, and does the test after the level 2 callback has returned.

I was counting from the top down.

-- 
Mathematics is the supreme nostalgia of our time.
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