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From: Rusty Russell <rusty@rustcorp.com.au>
To: Dave Young <hidave.darkstar@gmail.com>
Subject: Re: [PATCH] kvm: add oom notifier for virtio balloon
Date: Wed, 6 Oct 2010 19:35:44 +1030
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Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, avi@redhat.com,
        Anthony Liguori <anthony@codemonkey.ws>
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On Tue, 5 Oct 2010 11:15:21 pm Dave Young wrote:
> Balloon could cause guest memory oom killing and panic.
> 
> Add oom notify to leak some memory and retry fill balloon after 5 minutes.

Have you tried registering a shrinker?  See mm.h.

Thanks,
Rusty.