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-rw-r--r--include/linux/mmzone.h20
1 files changed, 18 insertions, 2 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 04b1636a970..d71ff763c9d 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