4 * management codes for pgdats and zones.
8 #include <linux/stddef.h>
9 #include <linux/mmzone.h>
10 #include <linux/module.h>
12 struct pglist_data *first_online_pgdat(void)
14 return NODE_DATA(first_online_node);
17 EXPORT_UNUSED_SYMBOL(first_online_pgdat); /* June 2006 */
19 struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
21 int nid = next_online_node(pgdat->node_id);
23 if (nid == MAX_NUMNODES)
25 return NODE_DATA(nid);
27 EXPORT_UNUSED_SYMBOL(next_online_pgdat); /* June 2006 */
31 * next_zone - helper magic for for_each_zone()
33 struct zone *next_zone(struct zone *zone)
35 pg_data_t *pgdat = zone->zone_pgdat;
37 if (zone < pgdat->node_zones + MAX_NR_ZONES - 1)
40 pgdat = next_online_pgdat(pgdat);
42 zone = pgdat->node_zones;
48 EXPORT_UNUSED_SYMBOL(next_zone); /* June 2006 */