From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pavel Machek <pavel@ucw.cz>
Subject: Re: [RFC][PATCH] swsusp: support creating bigger images
Date: Wed, 26 Apr 2006 00:36:58 +0200
Message-ID: <20060425223657.GH6379@elf.ucw.cz>
References: <200604242355.08111.rjw@sisk.pl> <200604260021.08888.rjw@sisk.pl>
	<20060425222526.GG6379@elf.ucw.cz>
	<200604260830.57866.nigel@suspend2.net>
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To: Nigel Cunningham <nigel@suspend2.net>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>, LKML <linux-kernel@vger.kernel.org>, Linux PM <linux-pm@osdl.org>
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On St 26-04-06 08:30:51, Nigel Cunningham wrote:
> HI.
> 
> On Wednesday 26 April 2006 08:25, Pavel Machek wrote:
> > Hi!
> >
> > > > It does apply to all of the LRU pages. This is what I've been doing for
> > > > years now. The only corner case I've come across is XFS. It still wants
> > > > to write data even when there's nothing to do and it's threads are
> > > > frozen (IIRC - haven't looked at it for a while). I got around that by
> > > > freezing bdevs when freezing processes.
> > >
> > > This means if we freeze bdevs, we'll be able to save all of the LRU
> > > pages, except for the pages mapped by the current task, without copying. 
> > > I think we can try to do this, but we'll need a patch to freeze bdevs for
> > > this purpose. ;-)
> >
> > ...adding more dependencies to how vm/blockdevs work. I'd say current
> > code is complex enough...
> 
> You assume too much. This is just using existing code.

Let's see the patch, then.
								Pavel

-- 
Thanks for all the (sleeping) penguins.

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