Memoryless nodes: No need for kswapd
Christoph Lameter [Tue, 16 Oct 2007 08:25:31 +0000 (01:25 -0700)]
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>

mm/vmscan.c

index bc58802..8765688 100644 (file)
@@ -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;