linux-kernel - Re: Linux 2.6.22-rc4

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Date:	Tue, 05 Jun 2007 14:11:48 -0700
From:	Badari Pulavarty <pbadari@...ibm.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.22-rc4

On Mon, 2007-06-04 at 20:50 -0700, Linus Torvalds wrote:
> So -rc4 is out there now, hopefully shrinking the regression list further. 
> 

Nothing serious, compile warnings ..

mm/sparse.c:244: warning: `__kmalloc_section_memmap' defined but not used
mm/sparse.c:274: warning: `__kfree_section_memmap' defined but not used

Here is the patch.

Thanks,
Badari

__kmalloc_section_memmap(), vaddr_in_vmalloc_area() and
 __kfree_section_memmap() are used only for MEMORY_HOTPLUG.
Moved them under CONFIG_MEMORY_HOTPLUG.

Signed-off-by: Badari Pulavarty <pbadari@...ibm.com>

Index: linux-2.6.22-rc4/mm/sparse.c
===================================================================
--- linux-2.6.22-rc4.orig/mm/sparse.c	2007-06-04 17:57:25.000000000 -0700
+++ linux-2.6.22-rc4/mm/sparse.c	2007-06-05 13:56:29.000000000 -0700
@@ -240,6 +240,27 @@ static struct page __init *sparse_early_
 	return NULL;
 }
 
+/*
+ * Allocate the accumulated non-linear sections, allocate a mem_map
+ * for each and record the physical to section mapping.
+ */
+void __init sparse_init(void)
+{
+	unsigned long pnum;
+	struct page *map;
+
+	for (pnum = 0; pnum < NR_MEM_SECTIONS; pnum++) {
+		if (!valid_section_nr(pnum))
+			continue;
+
+		map = sparse_early_mem_map_alloc(pnum);
+		if (!map)
+			continue;
+		sparse_init_one_section(__nr_to_section(pnum), pnum, map);
+	}
+}
+
+#ifdef CONFIG_MEMORY_HOTPLUG
 static struct page *__kmalloc_section_memmap(unsigned long nr_pages)
 {
 	struct page *page, *ret;
@@ -280,27 +301,6 @@ static void __kfree_section_memmap(struc
 }
 
 /*
- * Allocate the accumulated non-linear sections, allocate a mem_map
- * for each and record the physical to section mapping.
- */
-void __init sparse_init(void)
-{
-	unsigned long pnum;
-	struct page *map;
-
-	for (pnum = 0; pnum < NR_MEM_SECTIONS; pnum++) {
-		if (!valid_section_nr(pnum))
-			continue;
-
-		map = sparse_early_mem_map_alloc(pnum);
-		if (!map)
-			continue;
-		sparse_init_one_section(__nr_to_section(pnum), pnum, map);
-	}
-}
-
-#ifdef CONFIG_MEMORY_HOTPLUG
-/*
  * returns the number of sections whose mem_maps were properly
  * set.  If this is <=0, then that means that the passed-in
  * map was not consumed and must be freed.




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