53 #define block_start_pfn(pfn, order)	round_down(pfn, 1UL << (order))  macro
55 #define pageblock_start_pfn(pfn)	block_start_pfn(pfn, pageblock_order)
708 	unsigned long isolated, pfn, block_start_pfn, block_end_pfn;  in isolate_freepages_range()  local
712 	block_start_pfn = pageblock_start_pfn(pfn);  in isolate_freepages_range()
713 	if (block_start_pfn < cc->zone->zone_start_pfn)  in isolate_freepages_range()
714 		block_start_pfn = cc->zone->zone_start_pfn;  in isolate_freepages_range()
718 				block_start_pfn = block_end_pfn,  in isolate_freepages_range()
731 			block_start_pfn = pageblock_start_pfn(pfn);  in isolate_freepages_range()
736 		if (!pageblock_pfn_to_page(block_start_pfn,  in isolate_freepages_range()
1144 	unsigned long pfn, block_start_pfn, block_end_pfn;  in isolate_migratepages_range()  local
1148 	block_start_pfn = pageblock_start_pfn(pfn);  in isolate_migratepages_range()
1149 	if (block_start_pfn < cc->zone->zone_start_pfn)  in isolate_migratepages_range()
1150 		block_start_pfn = cc->zone->zone_start_pfn;  in isolate_migratepages_range()
1154 				block_start_pfn = block_end_pfn,  in isolate_migratepages_range()
1159 		if (!pageblock_pfn_to_page(block_start_pfn,  in isolate_migratepages_range()
1493 	unsigned long block_start_pfn;	/* start of current pageblock */  in isolate_freepages()  local
1517 	block_start_pfn = pageblock_start_pfn(isolate_start_pfn);  in isolate_freepages()
1518 	block_end_pfn = min(block_start_pfn + pageblock_nr_pages,  in isolate_freepages()
1528 	for (; block_start_pfn >= low_pfn;  in isolate_freepages()
1529 				block_end_pfn = block_start_pfn,  in isolate_freepages()
1530 				block_start_pfn -= pageblock_nr_pages,  in isolate_freepages()
1531 				isolate_start_pfn = block_start_pfn) {  in isolate_freepages()
1538 		if (!(block_start_pfn % (SWAP_CLUSTER_MAX * pageblock_nr_pages)))  in isolate_freepages()
1541 		page = pageblock_pfn_to_page(block_start_pfn, block_end_pfn,  in isolate_freepages()
1560 			update_pageblock_skip(cc, page, block_start_pfn);  in isolate_freepages()
1570 					block_start_pfn - pageblock_nr_pages;  in isolate_freepages()
1803 	unsigned long block_start_pfn;  in isolate_migratepages()  local
1818 	block_start_pfn = pageblock_start_pfn(low_pfn);  in isolate_migratepages()
1819 	if (block_start_pfn < cc->zone->zone_start_pfn)  in isolate_migratepages()
1820 		block_start_pfn = cc->zone->zone_start_pfn;  in isolate_migratepages()
1839 			block_start_pfn = block_end_pfn,  in isolate_migratepages()
1850 		page = pageblock_pfn_to_page(block_start_pfn,  in isolate_migratepages()
2399 				block_start_pfn(cc->migrate_pfn, cc->order);  in compact_zone()