linux-kernel - swsusp on nommu, was 'Re: No more bits in vm_area_struct's vm

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Date:	Wed, 30 Sep 2009 15:08:15 +0200
From:	Johannes Weiner <hannes@...xchg.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Nigel Cunningham <ncunningham@...a.org.au>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: swsusp on nommu, was 'Re: No more bits in vm_area_struct's vm_flags.'

On Wed, Sep 30, 2009 at 02:02:03PM +0200, Pavel Machek wrote:
> Hi!
> 
> > > Does TuxOnIce rely on CONFIG_MMU?  If so, then the TuxOnIce patch
> > > could presumably reuse VM_MAPPED_COPY for now - but don't be
> > > surprised if that's one we clean away later on.
> > 
> > Hmm. I'm not sure. The requirements are the same as for swsusp and
> > uswsusp. Is there some tool to graph config dependencies?
> 
> I don't think swsusp was ported on any -nommu architecture, so config
> dependency on MMU should be ok. OTOH such port should be doable...

I am sitting on some dusty patches to split swapfile handling from
actual paging and implement swsusp on blackfin.  They are incomplete
and I only occasionally find the time to continue working on them.  If
somebody is interested or also working on it, please let me know.

	Hannes
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