static void __init setup_usemap(struct pglist_data *pgdat,
				struct zone *zone,
				unsigned long zone_start_pfn,
				unsigned long zonesize)
{
	unsigned long usemapsize = usemap_size(zone_start_pfn, zonesize);
	zone->pageblock_flags = NULL;
	if (usemapsize)
		zone->pageblock_flags =
			memblock_virt_alloc_node_nopanic(usemapsize,
							 pgdat->node_id);
}
static void __init setup_usemap(struct pglist_data *pgdat,
				struct zone *zone,
				unsigned long zone_start_pfn,
				unsigned long zonesize)
{
	unsigned long usemapsize = usemap_size(zone_start_pfn, zonesize);
	zone->pageblock_flags = NULL;
	if (usemapsize)
		zone->pageblock_flags =
			memblock_virt_alloc_node_nopanic(usemapsize,
							 pgdat->node_id);
}