[PATCH] init_reap_node() initialization fix

It looks like there is a bug in init_reap_node() in slab.c that can cause
multiple oops's on certain ES7000 configurations. The variable reap_node
is defined per cpu, but only initialized on a single CPU. This causes an
oops in next_reap_node() when __get_cpu_var(reap_node) returns the wrong
value. Fix is below.

Signed-off-by: Dan Yeisley <[e-mail]>
Cc: Andi Kleen <[e-mail]>
Acked-by: Christoph Lameter <[e-mail]>
Cc: Pekka Enberg <[e-mail]>
Cc: Manfred Spraul <[e-mail]>
Cc: <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

mm/slab.c

···
 	if (node == MAX_NUMNODES)
 		node = first_node(node_online_map);
 
-	__get_cpu_var(reap_node) = node;
+	per_cpu(reap_node, cpu) = node;
 }
 
 static void next_reap_node(void)