Rafael J. Wysocki wrote:
> On Wednesday, 28 February 2007 16:25, Christoph Lameter wrote:
> 
>>On Wed, 28 Feb 2007, Pavel Machek wrote:
>>
>>
>>>I... actually do not like that patch. It adds code... at little or no
>>>benefit.
>>
>>We are looking into saving page flags since we are running out. The two 
>>page flags used by software suspend are rarely needed and should be taken 
>>out of the flags. If you can do it a different way then please do.
> 
> 
> As I have already said for a couple of times, I think we can and I'm going to
> do it, but right now I'm a bit busy with other things that I consider as more
> urgent.

I need one bit for lockless pagecache ;)

Anyway, I guess if you want something done you have to do it yourself.

This patch still needs work (and I don't know if it even works, because
I can't make swsusp resume even on a vanilla kernel). But this is my
WIP for removing swsusp page flags.

This patch adds a simple extent based nosave region tracker, and
rearranges some of the snapshot code to be a bit simpler and more
amenable to having dynamically allocated flags (they aren't actually
dynamically allocated in this patch, however).

-- 
SUSE Labs, Novell Inc.