tag	line	file	source code
PAGE_INITIAL_AGE	127	include/linux/swapctl.h	mem_map[MAP_NR(addr)].age = PAGE_INITIAL_AGE;
PAGE_INITIAL_AGE	170	mm/page_alloc.c	map->age = PAGE_INITIAL_AGE; \
PAGE_INITIAL_AGE	76	mm/swap.c	&PAGE_INITIAL_AGE,