is_file_lru      1956 mm/vmscan.c    	int file = is_file_lru(lru);
is_file_lru      2058 mm/vmscan.c    	int file = is_file_lru(lru);
is_file_lru      2280 mm/vmscan.c    		if (inactive_list_is_low(lruvec, is_file_lru(lru), sc, true))
is_file_lru      2459 mm/vmscan.c    		int file = is_file_lru(lru);