return 0; 
do { seq = zone_span_seqbegin(zone); if (pfn >= zone->zone_start_pfn + zone->spanned_pages) ret = 1; else if (pfn < zone->zone_start_pfn) ret = 1; } while (zone_span_seqretry(zone, seq));  return ret; 
static int page_outside_zone_boundaries(struct zone *zone, struct page *page){	if (page_to_pfn(page) >= zone->zone_start_pfn + zone->spanned_pages)		return 1;	if (page_to_pfn(page) < zone->zone_start_pfn)		return 1;	return 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/bdc8cb984576ab5b550c8b24c6fa111a873503e3/page_alloc.c/clean/mm/page_alloc.c