From: Christoph Lameter <clameter@sgi.com>
Date: Tue, 16 Oct 2007 08:25:31 +0000 (-0700)
Subject: Memoryless nodes: No need for kswapd
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=9422ffba4adc82b4b67a3ca6ef51516aa61f8248;p=openwrt%2Fstaging%2Fblogic.git

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>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@skynet.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/vmscan.c b/mm/vmscan.c
index bc58802663be..876568847b71 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1733,7 +1733,7 @@ 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;