diff --git a/mm/bootmem.c b/mm/bootmem.c
index 50353e0..70f1528 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -54,7 +54,7 @@
 /*
  * link bdata in order
  */
-static void link_bootmem(bootmem_data_t *bdata)
+static void __init link_bootmem(bootmem_data_t *bdata)
 {
 	bootmem_data_t *ent;
 	if (list_empty(&bdata_list)) {