If NUMA is enabled, find_next_best_node is responsible for helping build
the zonelist for each pgdat in the system.  However, if one sets
PENALTY_FOR_NODE_WITH_CPUS to a large value in an attempt to prefer nodes
w/o CPUs, the local node is erroneously placed after all nodes w/o CPUs in
the pgdat's zonelist.  This small patch fixes that by just checking if the
local node is part of the zonelist yet, and if not, returns it first.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>