return n; 
static void count_data_pages(void){	struct zone *zone;	unsigned long zone_pfn;	nr_copy_pages = 0;	for_each_zone (zone) {		if (is_highmem(zone))			continue;		mark_free_pages(zone);		for (zone_pfn = 0; zone_pfn < zone->spanned_pages; ++zone_pfn)			nr_copy_pages += saveable(zone, &zone_pfn);	}}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/a0f496517f3e28d651d0cbbcf2d4fb701ed6957e/snapshot.c/buggy/kernel/power/snapshot.c