Re: [PATCH 09/12] blkcg: remove additional reference to the css

[Tejun Heo]

On Tue, Sep 11, 2018 at 02:41:34PM -0400, Dennis Zhou wrote:
> From: "Dennis Zhou (Facebook)" <dennisszhou@xxxxxxxxx>
> 
> The previous patch in this series removed carrying around a pointer to
> the css in blkg. However, the blkg association logic still relied on
> taking a reference on the css to ensure we wouldn't fail in getting a
> reference for the blkg.
> 
> Here the implicit dependency on the css is removed. The association
> continues to rely on the tryget logic walking up the blkg tree. This
> streamlines the three ways that association can happen: normal, swap,
> and writeback.
> 
> Signed-off-by: Dennis Zhou <dennisszhou@xxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks.

-- 
tejun