1 files changed, 18 insertions, 2 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 04b1636a970b..d71ff763c9df 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -146,6 +146,7 @@ enum zone_type {
          */
         ZONE_HIGHMEM,
 #endif
+        ZONE_MOVABLE,
         MAX_NR_ZONES
 };
 
@@ -167,6 +168,7 @@ enum zone_type {
         + defined(CONFIG_ZONE_DMA32)    \
         + 1                             \
         + defined(CONFIG_HIGHMEM)       \
+        + 1                             \
 )
 #if __ZONE_COUNT < 2
 #define ZONES_SHIFT 0
@@ -499,10 +501,22 @@ 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 +536,9 @@ 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