From: Adrian Bunk <bunk@stusta.de>

This patch fixes the following compile error:

<--  snip  -->

...
  CC      mm/memory_hotplug.o
/home/bunk/linux/kernel-2.6/linux-2.6.18-rc5-mm1/mm/memory_hotplug.c: In function ‘add_memory’:
/home/bunk/linux/kernel-2.6/linux-2.6.18-rc5-mm1/mm/memory_hotplug.c:286: error: implicit declaration of function ‘cpuset_track_online_nodes’
make[2]: *** [mm/memory_hotplug.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 mm/memory_hotplug.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN mm/memory_hotplug.c~cpuset-top_cpuset-tracks-hotplug-changes-to-node_online_map-fix-2 mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~cpuset-top_cpuset-tracks-hotplug-changes-to-node_online_map-fix-2
+++ a/mm/memory_hotplug.c
@@ -21,6 +21,7 @@
 #include <linux/highmem.h>
 #include <linux/vmalloc.h>
 #include <linux/ioport.h>
+#include <linux/cpuset.h>
 
 #include <asm/tlbflush.h>
 
_