1 files changed, 9 insertions, 5 deletions

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 31c237a00c48..24376fe7ee68 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -13,12 +13,16 @@ struct mem_section;
 #ifdef CONFIG_MEMORY_HOTPLUG
 
 /*
- * Types for free bootmem.
- * The normal smallest mapcount is -1. Here is smaller value than it.
+ * Types for free bootmem stored in page->lru.next. These have to be in
+ * some random range in unsigned long space for debugging purposes.
  */
-#define SECTION_INFO            (-1 - 1)
-#define MIX_SECTION_INFO        (-1 - 2)
-#define NODE_INFO               (-1 - 3)
+enum {
+        MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE = 12,
+        SECTION_INFO = MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE,
+        MIX_SECTION_INFO,
+        NODE_INFO,
+        MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO,
+};
 
 /*
  * pgdat resizing functions