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Date:   Thu, 5 Apr 2018 16:56:50 +0200
From:   Peter Zijlstra <>
To:     Alan Stern <>
Cc:     Daniel Jordan <>,,,,,,,,,,,
        Steven Sistare <>,
        Pasha Tatashin <>
Subject: Re: Control dependency between prior load in while condition and
 later store?

On Thu, Apr 05, 2018 at 10:35:22AM -0400, Alan Stern wrote:
> In this example, READ_ONCE() is in fact a volatile access, so we're 
> okay.

But our documentation clearly states a control-dep can only be from a
READ_ONCE() (or something stronger), right? So we should be good

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