linux-kernel - Re: [PATCH] hibernation should work ok with memory hotplug

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Message-Id: <1225759967.12673.521.camel@nimitz>
Date:	Mon, 03 Nov 2008 16:52:47 -0800
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, pavel@...e.cz,
	linux-kernel@...r.kernel.org, linux-pm@...ts.osdl.org,
	Matt Tolentino <matthew.e.tolentino@...el.com>,
	Dave Hansen <haveblue@...ibm.com>, linux-mm@...ck.org,
	Mel Gorman <mel@...net.ie>, Andy Whitcroft <apw@...dowen.org>
Subject: Re: [PATCH] hibernation should work ok with memory hotplug

On Tue, 2008-11-04 at 01:29 +0100, Rafael J. Wysocki wrote:
> > Since zone *ranges* overlap, you can't tell to which zone a page belongs
> > simply from its address.  You need to ask the 'struct page'.
> 
> Understood.
> 
> This means that some zones may contain some ranges of pfns that correspond
> to struct pages in another zone, correct?

Yup, that's correct.

The patch looks good to me.

-- Dave

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