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-rw-r--r--mm/page_alloc.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 349b328763b..8dc8f2735d2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2042,7 +2042,6 @@ static __meminit void init_currently_empty_zone(struct zone *zone,
zone_wait_table_init(zone, size);
pgdat->nr_zones = zone_idx(zone) + 1;
- zone->zone_mem_map = pfn_to_page(zone_start_pfn);
zone->zone_start_pfn = zone_start_pfn;
memmap_init(size, pgdat->node_id, zone_idx(zone), zone_start_pfn);
@@ -2768,9 +2767,8 @@ struct page *pfn_to_page(unsigned long pfn)
}
unsigned long page_to_pfn(struct page *page)
{
- struct zone *zone = page_zone(page);
- return (page - zone->zone_mem_map) + zone->zone_start_pfn;
-
+ struct pglist_data *pgdat = NODE_DATA(page_to_nid(page));
+ return (page - pgdat->node_mem_map) + pgdat->node_start_pfn;
}
#elif defined(CONFIG_SPARSEMEM)
struct page *pfn_to_page(unsigned long pfn)