linux-master/mm/mm_init.c

915 	unsigned long zone_start_pfn = zone->zone_start_pfn;
916 	unsigned long zone_end_pfn = zone_start_pfn + zone->spanned_pages;
919 	start_pfn = clamp(start_pfn, zone_start_pfn, zone_end_pfn);
920 	end_pfn = clamp(end_pfn, zone_start_pfn, zone_end_pfn);
1120 					unsigned long *zone_start_pfn,
1127 			*zone_start_pfn = zone_movable_pfn[nid];
1133 			*zone_start_pfn < zone_movable_pfn[nid] &&
1138 		} else if (*zone_start_pfn >= zone_movable_pfn[nid])
1139 			*zone_start_pfn = *zone_end_pfn;
1179 					unsigned long zone_start_pfn,
1185 	if (zone_start_pfn == zone_end_pfn)
1188 	nr_absent = __absent_pages_in_range(nid, zone_start_pfn, zone_end_pfn);
1201 					  zone_start_pfn, zone_end_pfn);
1203 					zone_start_pfn, zone_end_pfn);
1226 					unsigned long *zone_start_pfn,
1233 	*zone_start_pfn = clamp(node_start_pfn, zone_low, zone_high);
1236 					   zone_start_pfn, zone_end_pfn);
1239 	if (*zone_end_pfn < node_start_pfn || *zone_start_pfn > node_end_pfn)
1244 	*zone_start_pfn = max(*zone_start_pfn, node_start_pfn);
1247 	return *zone_end_pfn - *zone_start_pfn;
1255 		z->zone_start_pfn = 0;
1277 		unsigned long zone_start_pfn, zone_end_pfn;
1284 						     &zone_start_pfn,
1287 						   zone_start_pfn,
1293 			zone->zone_start_pfn = zone_start_pfn;
1295 			zone->zone_start_pfn = 0;
1399 					unsigned long zone_start_pfn,
1408 	zone->zone_start_pfn = zone_start_pfn;
1414 			zone_start_pfn, (zone_start_pfn + size));
1428 static unsigned long __init usemap_size(unsigned long zone_start_pfn, unsigned long zonesize)
1432 	zonesize += zone_start_pfn & (pageblock_nr_pages-1);
1443 	unsigned long usemapsize = usemap_size(zone->zone_start_pfn,
1610 		init_currently_empty_zone(zone, zone->zone_start_pfn, size);
2351 	unsigned long block_start_pfn = zone->zone_start_pfn;