#endif
enum zone_stat_item {
- NR_FILE_MAPPED, /* mapped into pagetables.
+ NR_ANON_PAGES, /* Mapped anonymous pages */
+ NR_FILE_MAPPED, /* pagecache pages mapped into pagetables.
only modified from process context */
NR_FILE_PAGES,
+ NR_SLAB, /* Pages used by slab allocator */
+ NR_PAGETABLE, /* used for pagetables */
+ NR_FILE_DIRTY,
+ NR_WRITEBACK,
+ NR_UNSTABLE_NFS, /* NFS unstable pages */
+ NR_BOUNCE,
+#ifdef CONFIG_NUMA
+ NUMA_HIT, /* allocated in intended node */
+ NUMA_MISS, /* allocated in non intended node */
+ NUMA_FOREIGN, /* was intended here, hit elsewhere */
+ NUMA_INTERLEAVE_HIT, /* interleaver preferred this zone */
+ NUMA_LOCAL, /* allocation from local node */
+ NUMA_OTHER, /* allocation from other node */
+#endif
NR_VM_ZONE_STAT_ITEMS };
struct per_cpu_pages {
struct per_cpu_pageset {
struct per_cpu_pages pcp[2]; /* 0: hot. 1: cold */
#ifdef CONFIG_SMP
+ s8 stat_threshold;
s8 vm_stat_diff[NR_VM_ZONE_STAT_ITEMS];
#endif
-
-#ifdef CONFIG_NUMA
- unsigned long numa_hit; /* allocated in intended node */
- unsigned long numa_miss; /* allocated in non intended node */
- unsigned long numa_foreign; /* was intended here, hit elsewhere */
- unsigned long interleave_hit; /* interleaver prefered this zone */
- unsigned long local_node; /* allocation from local node */
- unsigned long other_node; /* allocation from other node */
-#endif
} ____cacheline_aligned_in_smp;
#ifdef CONFIG_NUMA
unsigned long lowmem_reserve[MAX_NR_ZONES];
#ifdef CONFIG_NUMA
+ /*
+ * zone reclaim becomes active if more unmapped pages exist.
+ */
+ unsigned long min_unmapped_ratio;
struct per_cpu_pageset *pageset[NR_CPUS];
#else
struct per_cpu_pageset pageset[NR_CPUS];
/* Zone statistics */
atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
- /*
- * timestamp (in jiffies) of the last zone reclaim that did not
- * result in freeing of pages. This is used to avoid repeated scans
- * if all memory in the zone is in use.
- */
- unsigned long last_unsuccessful_zone_reclaim;
/*
* prev_priority holds the scanning priority for this zone. It is
void __user *, size_t *, loff_t *);
int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
+int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *, int,
+ struct file *, void __user *, size_t *, loff_t *);
#include <linux/topology.h>
/* Returns the number of the current Node. */