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Date:   Mon, 15 Apr 2019 17:25:49 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     "chengjian (D)" <cj.chengjian@...wei.com>
Cc:     huawei.libin@...wei.com, xiexiuqi@...wei.com,
        yangyingliang@...wei.com, mingo@...hat.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched/fair: Use 'unsigned long' for
 group_shares,group_runnable

On Mon, Apr 15, 2019 at 11:20:31PM +0800, chengjian (D) wrote:
> Hi, Peter
> 
> 
> On 2019/4/15 20:46, Peter Zijlstra wrote:
> 
> I write a demo about this, which I described it as overflow.

I'm not saying there's no overflow, I'm saying there's nothing UB about
it.

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