1 files changed, 1 insertions, 1 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d73bfad1c32f..e1028fae3ebb 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3438,7 +3438,7 @@ static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat)
                 mem_map = NODE_DATA(0)->node_mem_map;
 #ifdef CONFIG_ARCH_POPULATES_NODE_MAP
                 if (page_to_pfn(mem_map) != pgdat->node_start_pfn)
-                        mem_map -= pgdat->node_start_pfn;
+                        mem_map -= (pgdat->node_start_pfn - ARCH_PFN_OFFSET);
 #endif /* CONFIG_ARCH_POPULATES_NODE_MAP */
         }
 #endif