mm/memcontrol: support MEMORY_DEVICE_PRIVATE v4

HMM pages (private or public device pages) are ZONE_DEVICE page and
thus need special handling when it comes to lru or refcount. This
patch make sure that memcontrol properly handle those when it face
them. Those pages are use like regular pages in a process address
space either as anonymous page or as file back page. So from memcg
point of view we want to handle them like regular page for now at
least.

Changed since v3:
  - remove public support and move those chunk to separate patch
Changed since v2:
  - s/host/public
Changed since v1:
  - s/public/host
  - add comments explaining how device memory behave and why

Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: cgroups@vger.kernel.org

0 files changed, 0 insertions, 0 deletions