Merge "vmstat: Remove BUG_ON from vmstat_update"

		 * Defer the checking for differentials to the

		 * shepherd thread on a different processor.

		 */

		int r;

		/*

		 * Shepherd work thread does not race since it never

		 * changes the bit if its zero but the cpu

		 * online / off line code may race if

		 * worker threads are still allowed during

		 * shutdown / startup.

		 */

		r = cpumask_test_and_set_cpu(smp_processor_id(),

			cpu_stat_off);

		VM_BUG_ON(r);

		cpumask_set_cpu(smp_processor_id(), cpu_stat_off);

	}

}