Memoryless nodes: No need for kswapd

A node without memory does not need a kswapd. So use the memory map instead
of the online map when starting kswapd.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Nishanth Aravamudan <nacc@us.ibm.com>
Tested-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Acked-by: Bob Picco <bob.picco@hp.com>
---
 mm/vmscan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.23-rc1-mm2/mm/vmscan.c
===================================================================
--- linux-2.6.23-rc1-mm2.orig/mm/vmscan.c	2007-08-03 16:31:50.000000000 -0700
+++ linux-2.6.23-rc1-mm2/mm/vmscan.c	2007-08-03 16:35:08.000000000 -0700
@@ -1716,7 +1716,7 @@ static int __init kswapd_init(void)
 	int nid;
 
 	swap_setup();
-	for_each_online_node(nid)
+	for_each_node_state(nid, N_HIGH_MEMORY)
  		kswapd_run(nid);
 	hotcpu_notifier(cpu_callback, 0);
 	return 0;