hv_balloon: do adjust_managed_page_count() when ballooning/un-ballooning
Unlike virtio_balloon/virtio_mem/xen balloon drivers, Hyper-V balloon driver does not adjust managed pages count when ballooning/un-ballooning and this leads to incorrect stats being reported, e.g. unexpected 'free' output. Note, the calculation in post_status() seems to remain correct: ballooned out pages are never 'available' and we manually add dm->num_pages_ballooned to 'commited'. Suggested-by:David Hildenbrand <david@redhat.com> Signed-off-by:
Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20201202161245.2406143-3-vkuznets@redhat.com Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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