On Sun, Jan 06, 2013 at 04:29:09PM +0800, Li Zefan wrote:

quoted

+static void schedule_cpuset_propagate_hotplug(struct cpuset *cs)
+{
+	/*
+	 * Pin @cs.  The refcnt will be released when the work item
+	 * finishes executing.
+	 */
+	if (!css_tryget(&cs->css))
+		return;
+
+	/*
+	 * Queue @cs->empty_cpuset_work.  If already pending, lose the css

cs->hotplug_work

Thanks.  Patch updated.

-- 
tejun