UPSTREAM: mm/page_poison: expose page_poisoning_enabled to kernel modules
In some usages, e.g. virtio-balloon, a kernel module needs to know if page poisoning is in use. This patch exposes the page_poisoning_enabled function to kernel modules. Signed-off-by:Wei Wang <wei.w.wang@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michael S. Tsirkin <mst@redhat.com> Acked-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Change-Id: Icab2f64ef17850ac8b636bd302653bb5f1960e8c (cherry picked from d95f58f4a6ca002126c36c530fb096519c94baef) Signed-off-by:
Alexander Potapenko <glider@google.com> Signed-off-by:
Todd Kjos <tkjos@google.com>
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