On Fri, Apr 21, 2017 at 8:30 PM, Jérôme Glisse <jgli...@redhat.com> wrote: > Move page reference decrement of ZONE_DEVICE from put_page() > to put_zone_device_page() this does not affect non ZONE_DEVICE > page. > > Doing this allow to catch when a ZONE_DEVICE page refcount reach > 1 which means the device is no longer reference by any one (unlike > page from other zone, ZONE_DEVICE page refcount never reach 0). > > This patch is just a preparatory patch for HMM. > > Changes since v1: > - commit message > > Signed-off-by: Jérôme Glisse <jgli...@redhat.com> > Cc: Dan Williams <dan.j.willi...@intel.com> > Cc: Ross Zwisler <ross.zwis...@linux.intel.com>
Reviewed-by: Dan Williams <dan.j.willi...@intel.com>
