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 <[email protected]>
Acked-by: Nishanth Aravamudan <[email protected]>
Tested-by: Lee Schermerhorn <[email protected]>
Acked-by: Bob Picco <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Mel Gorman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index bc58802663be83a8db2934376e252996e473f614..876568847b7175c4896e9e328c82e68321603f88 100644 (file)
--- 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;