linux-kernel - Re: [PATCH]: Compress hibernation image with LZO (in-kernel)

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Message-Id: <20100804111828.e4234160.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 4 Aug 2010 11:18:28 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Bojan Smojver <bojan@...ursive.com>
Cc:	Nigel Cunningham <nigel@...onice.net>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH]: Compress hibernation image with LZO (in-kernel)

On Wed, 04 Aug 2010 12:14:19 +1000
Bojan Smojver <bojan@...ursive.com> wrote:

> On Wed, 2010-08-04 at 11:02 +0900, KAMEZAWA Hiroyuki wrote:
> > Then, after resume, all vmalloc() area is resumed as "allocated".
> > 
> > Wrong ? 
> 
> I actually tried remembering vmalloc() returned pointers into a global
> variable as you suggested. On resume, they were always set to NULL,
> which would suggest that what has gotten into the image was the state
> before vmalloc() was called in save_image(). See:
> http://lkml.org/lkml/2010/8/2/537.
> 
> Anyone else wants to comment here?
> 
Hmm, ok. let's see the result. 

The reason I mention about the race is my patch corrupts saved image
by changing swap_map[] status and swap-cache radix-tree during save_image().

Maybe I don't understand something important.

Thanks,
-Kame

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