lower_zone 7723 mm/page_alloc.c struct zone *lower_zone; lower_zone 7726 mm/page_alloc.c lower_zone = pgdat->node_zones + idx; lower_zone 7730 mm/page_alloc.c lower_zone->lowmem_reserve[j] = 0; lower_zone 7732 mm/page_alloc.c lower_zone->lowmem_reserve[j] = lower_zone 7735 mm/page_alloc.c managed_pages += zone_managed_pages(lower_zone);