linux-kernel - Re: [PATCH 4/5] sock, cgroup: add sock->sk

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Message-Id: <20151117.162554.314531574043190960.davem@davemloft.net>
Date:	Tue, 17 Nov 2015 16:25:54 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	tj@...nel.org
Cc:	pablo@...filter.org, kaber@...sh.net, kadlec@...ckhole.kfki.hu,
	lizefan@...wei.com, hannes@...xchg.org, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org, coreteam@...filter.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-team@...com, daniel@...earbox.net,
	daniel.wagner@...-carit.de, nhorman@...driver.com
Subject: Re: [PATCH 4/5] sock, cgroup: add sock->sk_cgroup

From: Tejun Heo <tj@...nel.org>
Date: Tue, 17 Nov 2015 14:40:39 -0500

> In preparation, this patch adds sock->sk_cgroup which points to the
> associated cgroup.  A sock is associated on creation and stays
> associated to the same cgroup until freed; unfortunately, this ends up
> adding another cgroup field to struct sock on top of sk_cgrp_prioidx
> and sk_classid.  I tried to think of a way to somehow overload the
> existing fields but couldn't come up with a reasonable one.

sk->sk_cgrp_prioidx is simply sk->sk_cgroup->id, is it not?

We really need to consolidate this before we stuff even more members
into the socket for control group support, sorry.
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