linux-kernel - Re: [PATCH] hugetlb_cgroup: explicitly init the early

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Message-ID: <CAJd=RBA6ZUZ2UBetmcwGciqY8snme-aY60ZhW9F=8CO6kDzMBA@mail.gmail.com>
Date:	Tue, 22 Apr 2014 14:47:42 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Jianyu Zhan <nasa4836@...il.com>
Cc:	Tejun Heo <tj@...nel.org>, Li Zefan <lizefan@...wei.com>,
	containers@...ts.linux-foundation.org,
	Cgroups <cgroups@...r.kernel.org>, Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] hugetlb_cgroup: explicitly init the early_init field

On Tue, Apr 22, 2014 at 1:30 PM, Jianyu Zhan <nasa4836@...il.com> 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.
>
But other fields still missed, if any. Fair?

> Signed-off-by: Jianyu Zhan <nasa4836@...il.com>
> ---
>  mm/hugetlb_cgroup.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
> index 595d7fd..b5368f8 100644
> --- a/mm/hugetlb_cgroup.c
> +++ b/mm/hugetlb_cgroup.c
> @@ -405,4 +405,5 @@ struct cgroup_subsys hugetlb_cgrp_subsys = {
>         .css_alloc      = hugetlb_cgroup_css_alloc,
>         .css_offline    = hugetlb_cgroup_css_offline,
>         .css_free       = hugetlb_cgroup_css_free,
> +       .early_init     = 0,
>  };
> --
> 2.0.0-rc0
>
> --
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