From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH 11/12] blkcg: change blkg reference counting to use
 percpu_ref
Date: Fri, 7 Sep 2018 10:59:12 -0700
Message-ID: <20180907175912.GD1100574@devbig004.ftw2.facebook.com>
References: <20180906211045.29055-1-dennisszhou@gmail.com>
 <20180906211045.29055-12-dennisszhou@gmail.com>
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To: Dennis Zhou <dennisszhou@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>, Johannes Weiner <hannes@cmpxchg.org>, Josef Bacik <josef@toxicpanda.com>, kernel-team@fb.com, linux-block@vger.kernel.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org

On Thu, Sep 06, 2018 at 05:10:44PM -0400, Dennis Zhou wrote:
> From: "Dennis Zhou (Facebook)" <dennisszhou@gmail.com>
> 
> Now that every bio is associated with a blkg, this puts the use of
> blkg_get, blkg_try_get, and blkg_put on the hot path. This switches over
> the refcnt in blkg to use percpu_ref.
> 
> Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>

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

Thanks.

-- 
tejun