linux-kernel - Re: [PATCH] VMware Balloon driver

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Message-Id: <20100405163458.135fa319.akpm@linux-foundation.org>
Date:	Mon, 5 Apr 2010 16:34:58 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Dmitry Torokhov <dtor@...are.com>, linux-kernel@...r.kernel.org,
	pv-drivers@...are.com, Avi Kivity <avi@...hat.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>
Subject: Re: [PATCH] VMware Balloon driver

On Mon, 05 Apr 2010 16:28:38 -0700
Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> And is there some way to get the vm subsystem to provide backpressure: 
> "I'm getting desperately short of memory!"?

Not really.  One could presumably pull dopey tricks by hooking into
slab shrinker registration or even ->writepage().  But cooking up
something explicit doesn't sound too hard - the trickiest bit would be
actually defining what it should do.

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