pgdatfree 2358 mm/vmscan.c unsigned long pgdatfree; pgdatfree 2362 mm/vmscan.c pgdatfree = sum_zone_node_page_state(pgdat->node_id, NR_FREE_PAGES); pgdatfree 2374 mm/vmscan.c if (unlikely(pgdatfile + pgdatfree <= total_high_wmark)) {