Subject: Re: [patch 1/9] Guest page hinting: unused / free pages.
From: Dave Hansen <haveblue@us.ibm.com>
To: schwidefsky@de.ibm.com
Cc: linux-kernel@vger.kernel.org, virtualization@lists.osdl.org, akpm@osdl.org,
       nickpiggin@yahoo.com.au, frankeh@watson.ibm.com, rhim@cc.gateh.edu
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Date: Fri, 01 Sep 2006 09:10:09 -0700
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On Fri, 2006-09-01 at 18:05 +0200, Martin Schwidefsky wrote:
> On Fri, 2006-09-01 at 08:56 -0700, Dave Hansen wrote:
> > > This question did come up already. arch_free_page() is done before the
> > > PageReserved() check so it isn't suitable for stable/unused state
> > > transitions. You can argue that arch_free_page() should be moved but who
> > > knows what the architecture defined function is supposed to do?
> > > page_set_stable/page_set_unused on the other hand have a clearly defined
> > > meaning. 
> > 
> > With a patch set this large, I think it would at least be a nice thing
> > to go through and review the other architectures' uses.
> 
> There is only one user right now: UML.

Then it should be awfully easy to go figure out what they are doing and
coordinate by using the same functions, right? ;)

-- Dave

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