278 	int pagemap_fd;  in move_region()  local
284 	pagemap_fd = open("/proc/self/pagemap", O_RDONLY);  in move_region()
285 	if (pagemap_fd == -1)  in move_region()
287 	*data->expected_pfn = pagemap_get_pfn(pagemap_fd, data->region);  in move_region()
295 	int pagemap_fd;  in has_same_pfn()  local
300 	pagemap_fd = open("/proc/self/pagemap", O_RDONLY);  in has_same_pfn()
301 	if (pagemap_fd == -1)  in has_same_pfn()
304 	pfn = pagemap_get_pfn(pagemap_fd, data->region);  in has_same_pfn()
391 	int pagemap_fd;  in merge_and_migrate()  local
402 	pagemap_fd = open("/proc/self/pagemap", O_RDONLY);  in merge_and_migrate()
403 	if (pagemap_fd == -1)  in merge_and_migrate()
405 	*data->expected_pfn = pagemap_get_pfn(pagemap_fd, data->region);  in merge_and_migrate()