1 files changed, 13 insertions, 0 deletions

diff --git a/mm/internal.h b/mm/internal.h
index 5a9a6200e034..789727309f4d 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -47,4 +47,17 @@ static inline unsigned long page_order(struct page *page)
         VM_BUG_ON(!PageBuddy(page));
         return page_private(page);
 }
+
+/*
+ * FLATMEM and DISCONTIGMEM configurations use alloc_bootmem_node,
+ * so all functions starting at paging_init should be marked __init
+ * in those cases. SPARSEMEM, however, allows for memory hotplug,
+ * and alloc_bootmem_node is not used.
+ */
+#ifdef CONFIG_SPARSEMEM
+#define __paginginit __meminit
+#else
+#define __paginginit __init
+#endif
+
 #endif