Re: 2.6.22-rc2-mm1

[William Lee Irwin III <wli@holomorphy.com>]

On Wed, May 23, 2007 at 12:42:33AM -0700, Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc2/2.6.22-rc2-mm1/
> - A new readahead patch series.  This needs serious review and performance
>   testing please.
> - Added Ingo's CFS CPU scheduler
> - Xen dom-U support is now in the x86 tree.

CONFIG_SPARSEMEM sans CONFIG_MEMORY_HOTPLUG trips the following warning:
mm/sparse.c:254: warning: '__kmalloc_section_usemap' defined but not used
The following patch silences it.

Signed-off-by: William Irwin <bill.irwin@oracle.com>

Index: mm-2.6.22-rc2/mm/sparse.c
===================================================================
--- mm-2.6.22-rc2.orig/mm/sparse.c	2007-05-23 08:11:48.788227631 -0700
+++ mm-2.6.22-rc2/mm/sparse.c	2007-05-23 08:12:29.274534814 -0700
@@ -250,10 +250,12 @@
 	return size_bytes;
 }
 
+#ifdef CONFIG_MEMORY_HOTPLUG
 static unsigned long *__kmalloc_section_usemap(void)
 {
 	return kmalloc(usemap_size(), GFP_KERNEL);
 }
+#endif /* CONFIG_MEMORY_HOTPLUG */
 
 static unsigned long *sparse_early_usemap_alloc(unsigned long pnum)
 {
-
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