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Date:	Tue, 22 Mar 2011 08:57:55 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Namhyung Kim <namhyung@...il.com>
Cc:	Paul Menage <menage@...gle.com>, Li Zefan <lizf@...fujitsu.com>,
	containers@...ts.linux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] memcg: mark init_section_page_cgroup() properly

On Fri, 18 Mar 2011 21:54:13 +0900
Namhyung Kim <namhyung@...il.com> wrote:

> The commit ca371c0d7e23 ("memcg: fix page_cgroup fatal error
> in FLATMEM") removes call to alloc_bootmem() in the function
> so that it can be marked as __meminit to reduce memory usage
> when MEMORY_HOTPLUG=n.
> 
> Signed-off-by: Namhyung Kim <namhyung@...il.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


> ---
>  mm/page_cgroup.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
> index 5bffada7cde1..2d1a0fa01d7b 100644
> --- a/mm/page_cgroup.c
> +++ b/mm/page_cgroup.c
> @@ -105,8 +105,7 @@ struct page_cgroup *lookup_page_cgroup(struct page *page)
>  	return section->page_cgroup + pfn;
>  }
>  
> -/* __alloc_bootmem...() is protected by !slab_available() */
> -static int __init_refok init_section_page_cgroup(unsigned long pfn)
> +static int __meminit init_section_page_cgroup(unsigned long pfn)
>  {
>  	struct mem_section *section = __pfn_to_section(pfn);
>  	struct page_cgroup *base, *pc;
> -- 
> 1.7.4
> 
> 

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