1 files changed, 13 insertions, 1 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index f21e5951038b..f6167f2fd7fb 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -324,6 +324,17 @@ struct zone {
 #define MAX_ZONES_PER_ZONELIST (MAX_NUMNODES * MAX_NR_ZONES)
 
 #ifdef CONFIG_NUMA
+
+/*
+ * The NUMA zonelists are doubled becausse we need zonelists that restrict the
+ * allocations to a single node for GFP_THISNODE.
+ *
+ * [0 .. MAX_NR_ZONES -1]               : Zonelists with fallback
+ * [MAZ_NR_ZONES ... MAZ_ZONELISTS -1]  : No fallback (GFP_THISNODE)
+ */
+#define MAX_ZONELISTS (2 * MAX_NR_ZONES)
+
+
 /*
  * We cache key information from each zonelist for smaller cache
  * footprint when scanning for free pages in get_page_from_freelist().
@@ -389,6 +400,7 @@ struct zonelist_cache {
         unsigned long last_full_zap;            /* when last zap'd (jiffies) */
 };
 #else
+#define MAX_ZONELISTS MAX_NR_ZONES
 struct zonelist_cache;
 #endif
 
@@ -455,7 +467,7 @@ extern struct page *mem_map;
 struct bootmem_data;
 typedef struct pglist_data {
         struct zone node_zones[MAX_NR_ZONES];
-        struct zonelist node_zonelists[MAX_NR_ZONES];
+        struct zonelist node_zonelists[MAX_ZONELISTS];
         int nr_zones;
 #ifdef CONFIG_FLAT_NODE_MEM_MAP
         struct page *node_mem_map;