409 	unsigned long blockpfn = *start_pfn;  in isolate_freepages_block()  local
411 	cursor = pfn_to_page(blockpfn);  in isolate_freepages_block()
414 	for (; blockpfn < end_pfn; blockpfn++, cursor++) {  in isolate_freepages_block()
423 		if (!(blockpfn % SWAP_CLUSTER_MAX)  in isolate_freepages_block()
429 		if (!pfn_valid_within(blockpfn))  in isolate_freepages_block()
476 				blockpfn += isolated;  in isolate_freepages_block()
480 			blockpfn += isolated - 1;  in isolate_freepages_block()
493 	trace_mm_compaction_isolate_freepages(*start_pfn, blockpfn,  in isolate_freepages_block()
497 	*start_pfn = blockpfn;  in isolate_freepages_block()
504 	if (strict && blockpfn < end_pfn)  in isolate_freepages_block()
511 	if (blockpfn == end_pfn)  in isolate_freepages_block()