53 #define block_start_pfn(pfn, order)	round_down(pfn, 1UL << (order))  macro
684 	unsigned long isolated, pfn, block_start_pfn, block_end_pfn;  in isolate_freepages_range()  local
688 	block_start_pfn = pageblock_start_pfn(pfn);  in isolate_freepages_range()
689 	if (block_start_pfn < cc->zone->zone_start_pfn)  in isolate_freepages_range()
690 		block_start_pfn = cc->zone->zone_start_pfn;  in isolate_freepages_range()
694 				block_start_pfn = block_end_pfn,  in isolate_freepages_range()
707 			block_start_pfn = pageblock_start_pfn(pfn);  in isolate_freepages_range()
712 		if (!pageblock_pfn_to_page(block_start_pfn,  in isolate_freepages_range()
1214 	unsigned long pfn, block_start_pfn, block_end_pfn;  in isolate_migratepages_range()  local
1219 	block_start_pfn = pageblock_start_pfn(pfn);  in isolate_migratepages_range()
1220 	if (block_start_pfn < cc->zone->zone_start_pfn)  in isolate_migratepages_range()
1221 		block_start_pfn = cc->zone->zone_start_pfn;  in isolate_migratepages_range()
1225 				block_start_pfn = block_end_pfn,  in isolate_migratepages_range()
1230 		if (!pageblock_pfn_to_page(block_start_pfn,  in isolate_migratepages_range()
1571 	unsigned long block_start_pfn;	/* start of current pageblock */  in isolate_freepages()  local
1595 	block_start_pfn = pageblock_start_pfn(isolate_start_pfn);  in isolate_freepages()
1596 	block_end_pfn = min(block_start_pfn + pageblock_nr_pages,  in isolate_freepages()
1606 	for (; block_start_pfn >= low_pfn;  in isolate_freepages()
1607 				block_end_pfn = block_start_pfn,  in isolate_freepages()
1608 				block_start_pfn -= pageblock_nr_pages,  in isolate_freepages()
1609 				isolate_start_pfn = block_start_pfn) {  in isolate_freepages()
1616 		if (!(block_start_pfn % (COMPACT_CLUSTER_MAX * pageblock_nr_pages)))  in isolate_freepages()
1619 		page = pageblock_pfn_to_page(block_start_pfn, block_end_pfn,  in isolate_freepages()
1638 			update_pageblock_skip(cc, page, block_start_pfn);  in isolate_freepages()
1648 					block_start_pfn - pageblock_nr_pages;  in isolate_freepages()
1876 	unsigned long block_start_pfn;  in isolate_migratepages()  local
1891 	block_start_pfn = pageblock_start_pfn(low_pfn);  in isolate_migratepages()
1892 	if (block_start_pfn < cc->zone->zone_start_pfn)  in isolate_migratepages()
1893 		block_start_pfn = cc->zone->zone_start_pfn;  in isolate_migratepages()
1912 			block_start_pfn = block_end_pfn,  in isolate_migratepages()
1923 		page = pageblock_pfn_to_page(block_start_pfn,  in isolate_migratepages()
2462 				block_start_pfn(cc->migrate_pfn, cc->order);  in compact_zone()