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Date: Mon, 17 Oct 2016 17:49:38 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Boqun Feng <boqun.feng@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Waiman Long <waiman.long@hpe.com>, Jason Low <jason.low2@hpe.com>,
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Subject: Re: [PATCH -v4 6/8] locking/mutex: Restructure wait loop
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On Mon, Oct 17, 2016 at 09:45:01PM +0800, Boqun Feng wrote:
> But __mutex_set_flag() and __mutex_trylock() actually touch the same
> atomic word? So we don't need extra things to order them?

Right.. in any case brain is confused. I'll look again at it later.