linux-kernel - Re: [PATCH v2 0/4] make balloon pages movable by compaction

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Message-ID: <87r4syzqkn.fsf@rustcorp.com.au>
Date:	Fri, 29 Jun 2012 14:01:52 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Rafael Aquini <aquini@...hat.com>, linux-mm@...ck.org
Cc:	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mel@....ul.ie>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Rafael Aquini <aquini@...hat.com>
Subject: Re: [PATCH v2 0/4] make balloon pages movable by compaction

On Thu, 28 Jun 2012 18:49:38 -0300, Rafael Aquini <aquini@...hat.com> wrote:
> This patchset follows the main idea discussed at 2012 LSFMMS section:
> "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/
> 
> to introduce the required changes to the virtio_balloon driver, as well as
> changes to the core compaction & migration bits, in order to allow
> memory balloon pages become movable within a guest.
> 
> Rafael Aquini (4):
>   mm: introduce compaction and migration for virtio ballooned pages
>   virtio_balloon: handle concurrent accesses to virtio_balloon struct
>     elements
>   virtio_balloon: introduce migration primitives to balloon pages
>   mm: add vm event counters for balloon pages compaction
> 
>  drivers/virtio/virtio_balloon.c |  142 +++++++++++++++++++++++++++++++++++----
>  include/linux/mm.h              |   16 +++++
>  include/linux/virtio_balloon.h  |    6 ++
>  include/linux/vm_event_item.h   |    2 +
>  mm/compaction.c                 |  111 ++++++++++++++++++++++++------
>  mm/migrate.c                    |   32 ++++++++-
>  mm/vmstat.c                     |    4 ++
>  7 files changed, 280 insertions(+), 33 deletions(-)
> 
> 
> V2: address Mel Gorman's review comments

If Mel is happy, I am happy.  Seems sensible that the virtio_baloon
changes go in at the same time as the mm changes, so:

Acked-by: Rusty Russell <rusty@...tcorp.com.au>

Cheers,
Rusty.
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