tree 2d8b679328228141ebbcd85f792828b90f44cf54
parent a945928ea2709bc0e8e8165d33aed855a0110279
author David Vrabel <david.vrabel@citrix.com> 1379607293 +0100
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1380054147 -0400

xen/balloon: don't alloc page while non-preemptible

get_balloon_scratch_page() disables preemption so we cannot call
alloc_page() in between get/put_balloon_scratch_page().  Shuffle bits
around in decrease_reservation() to avoid this.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>