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Date:   Mon, 29 Jul 2019 12:47:21 -0700
From:   Tejun Heo <tj@kernel.org>
To:     Daniel Jordan <daniel.m.jordan@oracle.com>
Cc:     Steffen Klassert <steffen.klassert@secunet.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Lai Jiangshan <jiangshanlai@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC 3/9] workqueue: require CPU hotplug read exclusion for
 apply_workqueue_attrs
Message-ID: <20190729194721.GG569612@devbig004.ftw2.facebook.com>
References: <20190725212505.15055-1-daniel.m.jordan@oracle.com>
 <20190725212505.15055-4-daniel.m.jordan@oracle.com>
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On Thu, Jul 25, 2019 at 05:24:59PM -0400, Daniel Jordan wrote:
> Change the calling convention for apply_workqueue_attrs to require CPU
> hotplug read exclusion.
> 
> Avoids lockdep complaints about nested calls to get_online_cpus in a
> future patch where padata calls apply_workqueue_attrs when changing
> other CPU-hotplug-sensitive data structures with the CPU read lock
> already held.
> 
> Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com>

Acked-by: Tejun Heo <tj@kernel.org>

Please feel free to route with the rest of the patchset.

Thanks.

-- 
tejun