431 struct zone {  struct
609 static inline unsigned long zone_managed_pages(struct zone *zone)  in zone_managed_pages()  argument
611 	return (unsigned long)atomic_long_read(&zone->managed_pages);  in zone_managed_pages()
614 static inline unsigned long zone_cma_pages(struct zone *zone)  in zone_cma_pages()  argument
617 	return zone->cma_pages;  in zone_cma_pages()
623 static inline unsigned long zone_end_pfn(const struct zone *zone)  in zone_end_pfn()  argument
625 	return zone->zone_start_pfn + zone->spanned_pages;  in zone_end_pfn()
628 static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn)  in zone_spans_pfn()  argument
630 	return zone->zone_start_pfn <= pfn && pfn < zone_end_pfn(zone);  in zone_spans_pfn()
633 static inline bool zone_is_initialized(struct zone *zone)  in zone_is_initialized()  argument
635 	return zone->initialized;  in zone_is_initialized()
638 static inline bool zone_is_empty(struct zone *zone)  in zone_is_empty()  argument
640 	return zone->spanned_pages == 0;  in zone_is_empty()
647 static inline bool zone_intersects(struct zone *zone,  in zone_intersects()  argument
650 	if (zone_is_empty(zone))  in zone_intersects()
652 	if (start_pfn >= zone_end_pfn(zone) ||  in zone_intersects()
653 	    start_pfn + nr_pages <= zone->zone_start_pfn)  in zone_intersects()
686 	struct zone *zone;	/* Pointer to actual zone */  member
735 	struct zone node_zones[MAX_NR_ZONES];
862 void wakeup_kswapd(struct zone *zone, gfp_t gfp_mask, int order,
864 bool __zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark,
867 bool zone_watermark_ok(struct zone *z, unsigned int order,
870 bool zone_watermark_ok_safe(struct zone *z, unsigned int order,
881 extern void init_currently_empty_zone(struct zone *zone, unsigned long start_pfn,
906 #define zone_idx(zone)		((zone) - (zone)->zone_pgdat->node_zones)  argument
914 static inline bool managed_zone(struct zone *zone)  in managed_zone()  argument
916 	return zone_managed_pages(zone);  in managed_zone()
920 static inline bool populated_zone(struct zone *zone)  in populated_zone()  argument
922 	return zone->present_pages;  in populated_zone()
926 static inline int zone_to_nid(struct zone *zone)  in zone_to_nid()  argument
928 	return zone->node;  in zone_to_nid()
931 static inline void zone_set_nid(struct zone *zone, int nid)  in zone_set_nid()  argument
933 	zone->node = nid;  in zone_set_nid()
936 static inline int zone_to_nid(struct zone *zone)  in zone_to_nid()  argument
941 static inline void zone_set_nid(struct zone *zone, int nid) {}  in zone_set_nid()  argument
982 static inline int is_highmem(struct zone *zone)  in is_highmem()  argument
985 	return is_highmem_idx(zone_idx(zone));  in is_highmem()
1027 extern struct zone *next_zone(struct zone *zone);
1045 #define for_each_zone(zone)			        \  argument
1046 	for (zone = (first_online_pgdat())->node_zones; \
1047 	     zone;					\
1048 	     zone = next_zone(zone))
1050 #define for_each_populated_zone(zone)		        \  argument
1051 	for (zone = (first_online_pgdat())->node_zones; \
1052 	     zone;					\
1053 	     zone = next_zone(zone))			\
1054 		if (!populated_zone(zone))		\
1058 static inline struct zone *zonelist_zone(struct zoneref *zoneref)  in zonelist_zone()
1060 	return zoneref->zone;  in zonelist_zone()
1070 	return zone_to_nid(zoneref->zone);  in zonelist_node_idx()
1133 #define for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, nodemask) \  argument
1134 	for (z = first_zones_zonelist(zlist, highidx, nodemask), zone = zonelist_zone(z);	\
1135 		zone;							\
1137 			zone = zonelist_zone(z))
1139 #define for_next_zone_zonelist_nodemask(zone, z, highidx, nodemask) \  argument
1140 	for (zone = z->zone;	\
1141 		zone;							\
1143 			zone = zonelist_zone(z))
1155 #define for_each_zone_zonelist(zone, z, zlist, highidx) \  argument
1156 	for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, NULL)