1 files changed, 31 insertions, 2 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d09b1345a3a1..da8eb8ad9e9b 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -24,6 +24,14 @@
 #endif
 #define MAX_ORDER_NR_PAGES (1 << (MAX_ORDER - 1))
 
+/*
+ * PAGE_ALLOC_COSTLY_ORDER is the order at which allocations are deemed
+ * costly to service.  That is between allocation orders which should
+ * coelesce naturally under reasonable reclaim pressure and those which
+ * will not.
+ */
+#define PAGE_ALLOC_COSTLY_ORDER 3
+
 struct free_area {
         struct list_head        free_list;
         unsigned long           nr_free;
@@ -146,6 +154,7 @@ enum zone_type {
          */
         ZONE_HIGHMEM,
 #endif
+        ZONE_MOVABLE,
         MAX_NR_ZONES
 };
 
@@ -167,6 +176,7 @@ enum zone_type {
         + defined(CONFIG_ZONE_DMA32)    \
         + 1                             \
         + defined(CONFIG_HIGHMEM)       \
+        + 1                             \
 )
 #if __ZONE_COUNT < 2
 #define ZONES_SHIFT 0
@@ -499,10 +509,22 @@ static inline int populated_zone(struct zone *zone)
         return (!!zone->present_pages);
 }
 
+extern int movable_zone;
+
+static inline int zone_movable_is_highmem(void)
+{
+#if defined(CONFIG_HIGHMEM) && defined(CONFIG_ARCH_POPULATES_NODE_MAP)
+        return movable_zone == ZONE_HIGHMEM;
+#else
+        return 0;
+#endif
+}
+
 static inline int is_highmem_idx(enum zone_type idx)
 {
 #ifdef CONFIG_HIGHMEM
-        return (idx == ZONE_HIGHMEM);
+        return (idx == ZONE_HIGHMEM ||
+                (idx == ZONE_MOVABLE && zone_movable_is_highmem()));
 #else
         return 0;
 #endif
@@ -522,7 +544,9 @@ static inline int is_normal_idx(enum zone_type idx)
 static inline int is_highmem(struct zone *zone)
 {
 #ifdef CONFIG_HIGHMEM
-        return zone == zone->zone_pgdat->node_zones + ZONE_HIGHMEM;
+        int zone_idx = zone - zone->zone_pgdat->node_zones;
+        return zone_idx == ZONE_HIGHMEM ||
+                (zone_idx == ZONE_MOVABLE && zone_movable_is_highmem());
 #else
         return 0;
 #endif
@@ -566,6 +590,11 @@ int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *, int,
 int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int,
                         struct file *, void __user *, size_t *, loff_t *);
 
+extern int numa_zonelist_order_handler(struct ctl_table *, int,
+                        struct file *, void __user *, size_t *, loff_t *);
+extern char numa_zonelist_order[];
+#define NUMA_ZONELIST_ORDER_LEN 16      /* string buffer size */
+
 #include <linux/topology.h>
 /* Returns the number of the current Node. */
 #ifndef numa_node_id