netdev - Re: [PATCH] netclassid_cgroup: explicitly init the early

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Message-ID: <20140422110236.GC17116@hmsreliant.think-freely.org>
Date:	Tue, 22 Apr 2014 07:02:36 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	Jianyu Zhan <nasa4836@...il.com>
Cc:	davem@...emloft.net, lizefan@...wei.com, tj@...nel.org,
	aris@...hat.com, dborkman@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] netclassid_cgroup: explicitly init the early_init field

On Tue, Apr 22, 2014 at 01:31:16PM +0800, Jianyu Zhan wrote:
> For a cgroup subsystem who should init early, then it should carefully
> take care of the implementation of css_alloc, because it will be called
> before mm_init() setup the world.
> 
> Luckily we don't, and we better explicitly assign the early_init field
> to 0, for document reason.
> 
> Signed-off-by: Jianyu Zhan <nasa4836@...il.com>
> ---
>  net/core/netclassid_cgroup.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/net/core/netclassid_cgroup.c b/net/core/netclassid_cgroup.c
> index 22931e1..1b07dca 100644
> --- a/net/core/netclassid_cgroup.c
> +++ b/net/core/netclassid_cgroup.c
> @@ -108,4 +108,5 @@ struct cgroup_subsys net_cls_cgrp_subsys = {
>  	.css_free		= cgrp_css_free,
>  	.attach			= cgrp_attach,
>  	.base_cftypes		= ss_files,
> +	.early_init		= 0,
>  };
> -- 
> 2.0.0-rc0
> 
> 
Agreed, this doesn't make sense, early_init is default assigned to zero.  What
problem are you trying to solve?
Neil

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