static inline int is_highmem(struct zone *zone)
{
#ifdef CONFIG_HIGHMEM
- int zone_idx = zone - zone->zone_pgdat->node_zones;
- return zone_idx == ZONE_HIGHMEM ||
- (zone_idx == ZONE_MOVABLE && zone_movable_is_highmem());
+ int zone_off = (char *)zone - (char *)zone->zone_pgdat->node_zones;
+ return zone_off == ZONE_HIGHMEM * sizeof(*zone) ||
+ (zone_off == ZONE_MOVABLE * sizeof(*zone) &&
+ zone_movable_is_highmem());
#else
return 0;
#endif
extern struct pglist_data contig_page_data;
#define NODE_DATA(nid) (&contig_page_data)
#define NODE_MEM_MAP(nid) mem_map
-#define MAX_NODES_SHIFT 1
#else /* CONFIG_NEED_MULTIPLE_NODES */