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Date: Wed, 21 Aug 2013 10:08:46 -0400
From: Tejun Heo <tj@kernel.org>
To: Li Zefan <lizefan@huawei.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Cgroups <cgroups@vger.kernel.org>,
        Containers <containers@lists.linux-foundation.org>
Subject: Re: [PATCH 08/11] cpuset: separate configured masks and efffective
 masks
Message-ID: <20130821140846.GH19286@mtj.dyndns.org>
References: <52148F52.0@huawei.com>
 <52148FCA.8010704@huawei.com>
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On Wed, Aug 21, 2013 at 06:00:42PM +0800, Li Zefan wrote:
> @@ -2261,7 +2271,8 @@ static void cpuset_hotplug_workfn(struct work_struct *work)
>  	/* synchronize mems_allowed to N_MEMORY */
>  	if (mems_updated) {
>  		mutex_lock(&callback_mutex);
> -		top_cpuset.mems_allowed = new_mems;
> +		if (!sane)
> +			top_cpuset.mems_allowed = new_mems;

Can you please further explain how the top cgroup behaves?

-- 
tejun