drm_pagemap_page_zone_device_data
drm_pagemap_page_zone_device_data(page);
zdd = drm_pagemap_page_zone_device_data(page);
drm_pagemap_zdd_put(drm_pagemap_page_zone_device_data(page));
struct drm_pagemap_zdd *zdd = drm_pagemap_page_zone_device_data(vmf->page);
struct drm_pagemap_zdd *zdd = drm_pagemap_page_zone_device_data(page);
zdd = drm_pagemap_page_zone_device_data(page);
struct drm_pagemap_zdd *zdd = drm_pagemap_page_zone_device_data(page);
drm_pagemap_page_zone_device_data(src_page);
if (drm_pagemap_page_zone_device_data(src_page) !=
drm_pagemap_page_zone_device_data(fault_page))