This series is split from the "Virtio-balloon: support free page
reporting" series to make some improvements.

ChangeLog:
v2->v3:
- shrink the balloon pages according to the amount requested by the
  claimer, instead of using a user specified number;
v1->v2:
- register the shrinker when VIRTIO_BALLOON_F_DEFLATE_ON_OOM is
  negotiated.

Wei Wang (2):
  virtio-balloon: remove BUG() in init_vqs
  virtio_balloon: replace oom notifier with shrinker

 drivers/virtio/virtio_balloon.c | 121 ++++++++++++++++++++++------------------
 1 file changed, 67 insertions(+), 54 deletions(-)

-- 
2.7.4