Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Mon, 14 Oct 2019 18:26:04 -0700
From:   Davidlohr Bueso <dave@stgolabs.net>
To:     Manfred Spraul <manfred@colorfullife.com>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Waiman Long <longman@redhat.com>, 1vier1@web.de,
        Andrew Morton <akpm@linux-foundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Jonathan Corbet <corbet@lwn.net>
Subject: Re: [PATCH 6/6] Documentation/memory-barriers.txt: Clarify cmpxchg()
Message-ID: <20191015012604.eonteqarhvgmrzuc@linux-p48b>
References: <20191012054958.3624-1-manfred@colorfullife.com>
 <20191012054958.3624-7-manfred@colorfullife.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Disposition: inline
In-Reply-To: <20191012054958.3624-7-manfred@colorfullife.com>
User-Agent: NeoMutt/20180716
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Sat, 12 Oct 2019, Manfred Spraul wrote:
>Invalid would be:
>	smp_mb__before_atomic();
>	atomic_set();

fyi I've caught a couple of naughty users:

   drivers/crypto/cavium/nitrox/nitrox_main.c
   drivers/gpu/drm/msm/adreno/a5xx_preempt.c

Thanks,
Davidlohr