From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH v2] writeback: synchronize sync(2) against cgroup
 writeback membership switches
Date: Tue, 19 Dec 2017 05:31:51 -0800
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To: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>, cgroups@vger.kernel.org, xuejiufei <xuejiufei@gmail.com>, kernel-team@fb.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org

On Tue, Dec 19, 2017 at 02:04:54PM +0100, Jan Kara wrote:
> After some thinking about this I don't have a better solution. So you can
> add:
> 
> Acked-by: Jan Kara <jack@suse.cz>

Thanks, Jan.  Jens, can you please route this through block tree?

Thanks.

-- 
tejun