Lines Matching defs:zone
248 * In a memory zone, there is a certain amount of pages we consider
250 * free and reclaimable pages, minus some zone reserves to protect
251 * lowmem and the ability to uphold the zone's watermarks without
256 * are allowed to be actually dirtied. Per individual zone, or
260 * absolute number of bytes, calculating the per-zone dirty limit can
278 struct zone *zone = pgdat->node_zones + z;
280 if (!populated_zone(zone))
283 nr_pages += zone_page_state(zone, NR_FREE_PAGES);
308 struct zone *z;
330 * the zone's dirty balance reserve and the above calculation