Re: [RFC][PATCH -mm] swsusp: Use rbtree for tracking allocated swap

[Pavel Machek <pavel@ucw.cz>]

Hi!

> 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(-)

....as it removes code... I think we can do that. But it is 2.6.23+
material.

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