[PATCH 5/6] core: use cpumask_copy instead of = for cpus_allowed in fork

[Yinghai Lu <yinghai@kernel.org>]

so later could use nr_cpumask_bits in cpumask_size when MAXSMP is used

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 arch/x86/kernel/cpu/cpufreq/powernow-k8.c |   52 ++++++++++++++++++++----------
 kernel/fork.c                             |    2 -
 2 files changed, 36 insertions(+), 18 deletions(-)

Index: linux-2.6/kernel/fork.c
===================================================================
--- linux-2.6.orig/kernel/fork.c
+++ linux-2.6/kernel/fork.c
@@ -1207,7 +1207,7 @@ static struct task_struct *copy_process(
 	 * to ensure it is on a valid CPU (and if not, just force it back to
 	 * parent's CPU). This avoids alot of nasty races.
 	 */
-	p->cpus_allowed = current->cpus_allowed;
+	cpumask_copy(&p->cpus_allowed, &current->cpus_allowed);
 	p->rt.nr_cpus_allowed = current->rt.nr_cpus_allowed;
 	if (unlikely(!cpu_isset(task_cpu(p), p->cpus_allowed) ||
 			!cpu_online(task_cpu(p))))