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Re: [PATCH V2 3/4] block: make blkcg aware of kthread stored original cgroup info

On Wed, Sep 13, 2017 at 02:01:28PM -0700, Shaohua Li wrote:
> From: Shaohua Li <shli@xxxxxx>
> bio_blkcg is the only API to get cgroup info for a bio right now. If
> bio_blkcg finds current task is a kthread and has original blkcg
> associated, it will use the css instead of associating the bio to
> current task. This makes it possible that kthread dispatches bios on
> behalf of other threads.
> Signed-off-by: Shaohua Li <shli@xxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>