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Date:	Sun, 8 Apr 2007 12:56:36 +0000
From:	Pavel Machek <>
To:	"Rafael J. Wysocki" <>
Cc:	LKML <>,
	Andrew Morton <>,
	Nigel Cunningham <>
Subject: Re: [RFC][PATCH -mm] swsusp: Use rbtree for tracking allocated swap


> Some time ago we discussed the possibility of simplifying the swsusp's approach
> towards tracking the swap pages allocated by it for saving the image (so that
> they can be freed if there's an error).
> I think we can get back to it now, as it is a nice optimization that should
> allow us to use less memory (almost always) and improve performance a bit.

Well, I do not think you can measure the difference, but...

>  kernel/power/power.h  |   27 +---------
>  kernel/power/swap.c   |   18 +-----
>  kernel/power/swsusp.c |  135 ++++++++++++++++++++++++++------------------------
>  kernel/power/user.c   |   22 +-------
>  4 files changed, 85 insertions(+), 117 deletions(-) it removes code... I think we can do that. But it is 2.6.23+

(cesky, pictures)
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