linux-kernel - Re: [PATCH 1/2] cgroup: get a ref to source csses when migrating

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Message-ID: <20150825181445.GB26785@mtj.duckdns.org>
Date:	Tue, 25 Aug 2015 14:14:45 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Aleksa Sarai <cyphar@...har.com>
Cc:	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH 1/2] cgroup: get a ref to source csses when migrating

Hello, Aleksa.

On Tue, Aug 25, 2015 at 12:00:54PM +1000, Aleksa Sarai wrote:
> You also mentioned that depending on the css_set's ref being bumped to
> protect the contained csses is "sort of implementation detail.  It can
> be implemented in different ways." Which made me think that depending
> on that is not a good idea.
> 
> But if it's safe to depend on the cgroup_migrate_add_src() pinning the
> ref on the css_set, I'll drop this patch and fix up the other one
> accordingly.

Yeah, let's go w/o the explicit refcnting.

Thanks.

-- 
tejun
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