Date: Thu, 31 Aug 2017 10:04:42 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Byungchul Park <byungchul.park@lge.com>
Cc: mingo@kernel.org, tj@kernel.org, boqun.feng@gmail.com,
        david@fromorbit.com, johannes@sipsolutions.net, oleg@redhat.com,
        linux-kernel@vger.kernel.org, kernel-team@lge.com
Subject: Re: [PATCH 4/4] lockdep: Fix workqueue crossrelease annotation
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On Wed, Aug 30, 2017 at 08:25:46PM +0900, Byungchul Park wrote:

> For example - I'm giving you the same example repeatedly:
> 
> context X                 context Y
> ---------                 ---------
>                           wait_for_completion(C)
> acquire(A)
> process_one_work()
>    acquire(B)
>    work->fn()
>       complete(C)
> 
> Please check C->A and C->B.

Is there a caller of procesS_one_work() that holds a lock?