From: Dave Hansen <haveblue@us.ibm.com>

It's only used in one file, and not in any critical paths, so
make it out-of-line.

Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 include/linux/mmzone.h |   26 +-------------------------
 mm/sparse.c            |   25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 25 deletions(-)

diff -puN include/linux/mmzone.h~memory-hotplug-prep-__section_nr-helper-fix include/linux/mmzone.h
--- devel/include/linux/mmzone.h~memory-hotplug-prep-__section_nr-helper-fix	2005-09-07 20:10:27.000000000 -0700
+++ devel-akpm/include/linux/mmzone.h	2005-09-07 20:10:27.000000000 -0700
@@ -511,31 +511,7 @@ static inline struct mem_section *__nr_t
 		return NULL;
 	return &mem_section[SECTION_NR_TO_ROOT(nr)][nr & SECTION_ROOT_MASK];
 }
-
-/*
- * Although written for the SPARSEMEM_EXTREME case, this happens
- * to also work for the flat array case becase
- * NR_SECTION_ROOTS==NR_MEM_SECTIONS.
- */
-static inline int __section_nr(struct mem_section* ms)
-{
-	unsigned long root_nr;
-	struct mem_section* root;
-
-	for (root_nr = 0;
-	     root_nr < NR_MEM_SECTIONS;
-	     root_nr += SECTIONS_PER_ROOT) {
-		root = __nr_to_section(root_nr);
-
-		if (!root)
-			continue;
-
-		if ((ms >= root) && (ms < (root + SECTIONS_PER_ROOT)))
-		     break;
-	}
-
-	return (root_nr * SECTIONS_PER_ROOT) + (ms - root);
-}
+extern int __section_nr(struct mem_section* ms);
 
 /*
  * We use the lower bits of the mem_map pointer to store
diff -puN mm/sparse.c~memory-hotplug-prep-__section_nr-helper-fix mm/sparse.c
--- devel/mm/sparse.c~memory-hotplug-prep-__section_nr-helper-fix	2005-09-07 20:10:27.000000000 -0700
+++ devel-akpm/mm/sparse.c	2005-09-07 20:10:27.000000000 -0700
@@ -72,6 +72,31 @@ static inline int sparse_index_init(unsi
 }
 #endif
 
+/*
+ * Although written for the SPARSEMEM_EXTREME case, this happens
+ * to also work for the flat array case becase
+ * NR_SECTION_ROOTS==NR_MEM_SECTIONS.
+ */
+int __section_nr(struct mem_section* ms)
+{
+	unsigned long root_nr;
+	struct mem_section* root;
+
+	for (root_nr = 0;
+	     root_nr < NR_MEM_SECTIONS;
+	     root_nr += SECTIONS_PER_ROOT) {
+		root = __nr_to_section(root_nr);
+
+		if (!root)
+			continue;
+
+		if ((ms >= root) && (ms < (root + SECTIONS_PER_ROOT)))
+		     break;
+	}
+
+	return (root_nr * SECTIONS_PER_ROOT) + (ms - root);
+}
+
 /* Record a memory area against a node. */
 void memory_present(int nid, unsigned long start, unsigned long end)
 {
_