linux-kernel - Re: [PATCH v13 3/5] cgroup, block: implement task_get

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Date:	Mon, 8 Jun 2015 18:22:02 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Aleksa Sarai <cyphar@...har.com>
Cc:	lizefan@...wei.com, mingo@...hat.com, peterz@...radead.org,
	richard@....at, fweisbec@...il.com, linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org
Subject: Re: [PATCH v13 3/5] cgroup, block: implement task_get_css()

On Sat, Jun 06, 2015 at 10:02:16AM +1000, Aleksa Sarai wrote:
> From: Tejun Heo <tj@...nel.org>
> 
> Implement task_get_css() which find and pins the css for the specified
> task and subsys.  As a task is always associated with an online css
> for every subsystem except while the css_set update is propagating,
> task_get_css() retries till css_tryget_online() succeeds.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Li Zefan <lizefan@...wei.com>

Another form of this patch was already in block/for-4.2/writeback.  I
cherry picked that commit into cgroup/for-4.2 to avoid pulling the
whole thing into cgroup tree.

Thanks.

-- 
tejun
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