Date: Wed, 7 Nov 2012 22:34:04 -0200
From: Rafael Aquini <aquini@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        virtualization@lists.linux-foundation.org,
        "Michael S. Tsirkin" <mst@redhat.com>, Rik van Riel <riel@redhat.com>,
        Mel Gorman <mel@csn.ul.ie>, Andi Kleen <andi@firstfloor.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Minchan Kim <minchan@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: [PATCH v11 5/7] virtio_balloon: introduce migration primitives
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On Thu, Nov 08, 2012 at 09:32:18AM +1030, Rusty Russell wrote:
> The first one can be delayed, the second one can be delayed if the host
> didn't ask for VIRTIO_BALLOON_F_MUST_TELL_HOST (qemu doesn't).
> 
> We could implement a proper request queue for these, and return -EAGAIN
> if the queue fills.  Though in practice, it's not important (it might
> help performance).

I liked the idea. Give me the directions to accomplish it and I'll give it a try
for sure.

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