Memoryless nodes: Add N_CPU node state

We need the check for a node with cpu in zone reclaim.  Zone reclaim will not
allow remote zone reclaim if a node has a cpu.

[Lee.Schermerhorn@hp.com: Move setup of N_CPU node state mask]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Tested-by:  Lee Schermerhorn <lee.schermerhorn@hp.com>
Acked-by: Bob Picco <bob.picco@hp.com>
Cc: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@skynet.ie>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index ccee962f3559..905e18f4b412 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -349,6 +349,7 @@ enum node_states {
 #else
         N_HIGH_MEMORY = N_NORMAL_MEMORY,
 #endif
+        N_CPU,          /* The node has one or more cpus */
         NR_NODE_STATES
 };