303 struct zone {  struct
319 	 * GB of ram we must reserve some of the lower zone memory (otherwise we risk  argument
327 	 * This is a per-zone reserve of pages that should not be  argument
335 	 * zone reclaim becomes active if more unmapped pages exist.  argument
337 	unsigned long		min_unmapped_pages;
338 	unsigned long		min_slab_pages;
340 	struct per_cpu_pageset __percpu *pageset;
344 	spinlock_t		lock;
345 	int                     all_unreclaimable; /* All pages pinned */
348 	seqlock_t		span_seqlock;
350 	struct free_area	free_area[MAX_ORDER];
376 	struct zone_reclaim_stat reclaim_stat;  argument
379 	unsigned long		flags;		   /* zone flags, see below */  argument
386 	 * this zone's LRU.  Maintained by the pageout code.  argument
388 	unsigned int inactive_ratio;
425 	struct pglist_data	*zone_pgdat;  argument
427 	unsigned long		zone_start_pfn;  argument
432 	 * to be read outside of zone->lock, and it is done in the main  argument
450 	ZONE_OOM_LOCKED,		/* zone is in OOM killer zonelist */  argument
456 static inline void zone_set_flag(struct zone *zone, zone_flags_t flag)  in zone_set_flag()
461 static inline int zone_test_and_set_flag(struct zone *zone, zone_flags_t flag)  in zone_test_and_set_flag()
466 static inline void zone_clear_flag(struct zone *zone, zone_flags_t flag)  in zone_clear_flag()
471 static inline int zone_is_reclaim_congested(const struct zone *zone)  in zone_is_reclaim_congested()
476 static inline int zone_is_reclaim_locked(const struct zone *zone)  in zone_is_reclaim_locked()
481 static inline int zone_is_oom_locked(const struct zone *zone)  in zone_is_oom_locked()
582 	struct zone *zone;	/* Pointer to actual zone */  member
722 #define zone_idx(zone)		((zone) - (zone)->zone_pgdat->node_zones)  argument
724 static inline int populated_zone(struct zone *zone)  in populated_zone()
761 static inline int is_highmem(struct zone *zone)  in is_highmem()
773 static inline int is_normal(struct zone *zone)  in is_normal()
778 static inline int is_dma32(struct zone *zone)  in is_dma32()
787 static inline int is_dma(struct zone *zone)  in is_dma()
846 #define for_each_zone(zone)			        \  argument
851 #define for_each_populated_zone(zone)		        \  argument
912 					struct zone **zone)  in first_zones_zonelist()
929 #define for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, nodemask) \  argument
943 #define for_each_zone_zonelist(zone, z, zlist, highidx) \  argument
1173 					struct page *page, struct zone *zone)  in memmap_valid_within()