There is no need to update the balloon actual register when there is no
ballooning request. This patch avoids update_balloon_size when diff is 0.
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
update_balloon_size_work);
diff = towards_target(vb);
+ if (!diff)
+ return;
+
if (diff > 0)
diff -= fill_balloon(vb, diff);
- else if (diff < 0)
+ else
diff += leak_balloon(vb, -diff);
update_balloon_size(vb);