linux-kernel - Re: Back to the future.

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Date:	Thu, 26 Apr 2007 17:42:28 +1000
From:	Nigel Cunningham <nigel@...el.suspend2.net>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Back to the future.

Hi.

On Thu, 2007-04-26 at 10:28 +0300, Pekka Enberg wrote:
> On 4/26/07, Nigel Cunningham <nigel@...el.suspend2.net> wrote:
> > 3) Someone else steps up to the plate and tries to merge Suspend2 one
> > bit at a time.
> 
> So which bits do we want to merge? For example, Suspend2
> kernel/power/ui.c, kernel/power/compression.c, and
> kernel/power/encryption.c seem pointless now that we have uswsusp.
> Furthermore, being the shameless Linus cheerleader that I am, I got
> the impression that we should fix the snapshot/shutdown logic in the
> kernel which Suspend2 doesn't really address?

I agree that the driver logic could be addressed too, but to answer your
question...

* Doing things in the right order? (Prepare the image, then do the
atomic copy, then save).
* Mulithreaded I/O (might as well use multiple cores to compress the
image, now that we're hotplugging later).
* Support for > 1 swap device.
* Support for ordinary files.
* Full image option.
* Modular design?

Regards,

Nigel

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