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

On Fri, Jun 29, 2012 at 02:01:52PM +0930, Rusty Russell wrote:

On Thu, 28 Jun 2012 18:49:38 -0300, Rafael Aquini [off-list ref] wrote:

quoted

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 <redacted>

Thanks Rusty!

I'll be respinning a v3 to address some extra suggestions Mel did, so if you
have any concern that you'd like me to address, do not hesitate on letting me
know! 

Cheers!
Rafael