linux-kernel - Re: [PATCH] Thaw userspace and kernel space separately.

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Message-ID: <Pine.LNX.4.64.0610251044380.19648@twinlark.arctic.org>
Date:	Wed, 25 Oct 2006 10:45:40 -0700 (PDT)
From:	dean gaudet <dean@...tic.org>
To:	Andrew Morton <akpm@...l.org>
cc:	Nigel Cunningham <ncunningham@...uxmail.org>, rjw@...k.pl,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Thaw userspace and kernel space separately.

On Mon, 23 Oct 2006, Andrew Morton wrote:

> > On Mon, 23 Oct 2006 22:00:11 +1000 Nigel Cunningham <ncunningham@...uxmail.org> wrote:
> > If you can only thaw the kernel threads, you can free memory without
> > restarting userspace or deadlocking against a frozen kjournald.
> > 
> 
> kjournald will not participate in writing to swapfiles.
> 
> The situation where we would need this feature is where the loop driver is
> involved in the path-to-disk.  But I doubt if that's a thing we'd want to
> support.

dm-crypt?  that seems like a very important thing to support for suspend 
to disk.

-dean
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