linux-kernel - Re: [RFC][PATCH 2/3] swsusp: Do not use page flags

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Message-ID: <20070312090335.GD8330@elf.ucw.cz>
Date:	Mon, 12 Mar 2007 10:03:35 +0100
From:	Pavel Machek <pavel@....cz>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Nigel Cunningham <ncunningham@...uxmail.org>,
	Johannes Berg <johannes@...solutions.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Christoph Lameter <clameter@....com>,
	Nick Piggin <nickpiggin@...oo.com.au>
Subject: Re: [RFC][PATCH 2/3] swsusp: Do not use page flags

Hi!

> Make swsusp use memory bitmaps instead of page flags for marking 'nosave' and
> free pages.  This allows us to 'recycle' two page flags that can be used for other
> purposes.  Also, the memory needed to store the bitmaps is allocated when
> necessary (ie. before the suspend) and freed after the resume which is more
> reasonable.
> 
> The patch is designed to minimize the amount of changes and there are some nice
> simplifications and optimizations possible on top of it.  I am going to
> implement them separately in the future.
> 
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>

Looks ok, but needs to stay in -mm for a while. ACK.
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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