431 struct zone {  struct
443 	 * wasting several GB of ram we must reserve some of the lower zone  argument
454 	struct pglist_data	*zone_pgdat;  argument
466 	unsigned long		zone_start_pfn;  argument
469 	 * spanned_pages is the total pages spanned by the zone, including  argument
519 	 * of pageblock. Protected by zone->lock.  argument
537 	/* zone flags, see below */  argument
538 	unsigned long		flags;
541 	spinlock_t		lock;
555 	unsigned long		compact_cached_free_pfn;
557 	unsigned long		compact_cached_migrate_pfn[ASYNC_AND_SYNC];
558 	unsigned long		compact_init_migrate_pfn;
559 	unsigned long		compact_init_free_pfn;
569 	unsigned int		compact_considered;
570 	unsigned int		compact_defer_shift;
571 	int			compact_order_failed;
576 	bool			compact_blockskip_flush;
579 	bool			contiguous;
604 	ZONE_BOOSTED_WATERMARK,		/* zone recently boosted watermarks.  argument
609 static inline unsigned long zone_managed_pages(struct zone *zone)  in zone_managed_pages()
614 static inline unsigned long zone_cma_pages(struct zone *zone)  in zone_cma_pages()
623 static inline unsigned long zone_end_pfn(const struct zone *zone)  in zone_end_pfn()
628 static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn)  in zone_spans_pfn()
633 static inline bool zone_is_initialized(struct zone *zone)  in zone_is_initialized()
638 static inline bool zone_is_empty(struct zone *zone)  in zone_is_empty()
647 static inline bool zone_intersects(struct zone *zone,  in zone_intersects()
686 	struct zone *zone;	/* Pointer to actual zone */  member
906 #define zone_idx(zone)		((zone) - (zone)->zone_pgdat->node_zones)  argument
914 static inline bool managed_zone(struct zone *zone)  in managed_zone()
920 static inline bool populated_zone(struct zone *zone)  in populated_zone()
926 static inline int zone_to_nid(struct zone *zone)  in zone_to_nid()
931 static inline void zone_set_nid(struct zone *zone, int nid)  in zone_set_nid()
936 static inline int zone_to_nid(struct zone *zone)  in zone_to_nid()
941 static inline void zone_set_nid(struct zone *zone, int nid) {}  in zone_set_nid()
982 static inline int is_highmem(struct zone *zone)  in is_highmem()
1045 #define for_each_zone(zone)			        \  argument
1050 #define for_each_populated_zone(zone)		        \  argument
1133 #define for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, nodemask) \  argument
1139 #define for_next_zone_zonelist_nodemask(zone, z, highidx, nodemask) \  argument
1155 #define for_each_zone_zonelist(zone, z, zlist, highidx) \  argument