netdev - Re: [Patch net-next] net: revert "sched classifier: make cgroup table local"

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Date:	Thu, 02 Jan 2014 19:03:23 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	xiyou.wangcong@...il.com
Cc:	netdev@...r.kernel.org, stephen@...workplumber.org
Subject: Re: [Patch net-next] net: revert "sched classifier: make cgroup
 table local"

From: Cong Wang <xiyou.wangcong@...il.com>
Date: Thu,  2 Jan 2014 14:58:41 -0800

> This reverts commit de6fb288b1246a5c4e00c0cdbfe3a838a360b3f4.
> Otherwise we got:
> 
> net/sched/cls_cgroup.c:106:29: error: static declaration of ‘net_cls_subsys’ follows non-static declaration
>  static struct cgroup_subsys net_cls_subsys = {
>                              ^
> In file included from include/linux/cgroup.h:654:0,
>                  from net/sched/cls_cgroup.c:18:
> include/linux/cgroup_subsys.h:35:29: note: previous declaration of ‘net_cls_subsys’ was here
>  SUBSYS(net_cls)
>                              ^
> make[2]: *** [net/sched/cls_cgroup.o] Error 1
> 
> Cc: Stephen Hemminger <stephen@...workplumber.org>
> Cc: David S. Miller <davem@...emloft.net>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

This is so damn unintuitive, and that build error only occurs if you
build cls_cgroup statically.

Applied, but the way this works is terrible.