libata: switch to using block layer tagging support

[linux-2.6-omap-h63xx.git] / include / linux / memory_hotplug.h

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index ea9f5ad9ec8ea72f56eeff6a9e42a2053e2ba623..763ba81fc0f0a5c6adcb623501ebed6c28200e58 100644 (file)
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -13,12 +13,12 @@ struct mem_section;
 #ifdef CONFIG_MEMORY_HOTPLUG
 
 /*
- * Magic number for free bootmem.
+ * Types for free bootmem.
  * The normal smallest mapcount is -1. Here is smaller value than it.
  */
-#define SECTION_INFO           0xfffffffe
-#define MIX_INFO               0xfffffffd
-#define NODE_INFO              0xfffffffc
+#define SECTION_INFO           (-1 - 1)
+#define MIX_SECTION_INFO       (-1 - 2)
+#define NODE_INFO              (-1 - 3)
 
 /*
  * pgdat resizing functions
@@ -199,6 +199,18 @@ extern int walk_memory_resource(unsigned long start_pfn,
                        unsigned long nr_pages, void *arg,
                        int (*func)(unsigned long, unsigned long, void *));
 
+#ifdef CONFIG_MEMORY_HOTREMOVE
+
+extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages);
+
+#else
+static inline int is_mem_section_removable(unsigned long pfn,
+                                       unsigned long nr_pages)
+{
+       return 0;
+}
+#endif /* CONFIG_MEMORY_HOTREMOVE */
+
 extern int add_memory(int nid, u64 start, u64 size);
 extern int arch_add_memory(int nid, u64 start, u64 size);
 extern int remove_memory(u64 start, u64 size);