linux-kernel - Re: [PATCH] mm: Fix section mismatch in memcontrol.c

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Date:	Tue, 13 Jan 2009 15:13:07 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Rakib Mullick <rakib.mullick@...il.com>,
	Linux-kernel Mailing List <linux-kernel@...r.kernel.org>,
	mingo@...e.hu, Andrew Morton <akpm@...ux-foundation.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: Re: [PATCH] mm: Fix section mismatch in memcontrol.c

On Tue, 13 Jan 2009 13:49:03 +0800
Li Zefan <lizf@...fujitsu.com> wrote:

> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Cc: Balbir Singh <balbir@...ux.vnet.ibm.com>
> 
> Rakib Mullick wrote:
> > Impact: Fix section mismatch warning.
> > 
> > The annotation for __init in enable_swap_cgroup() and __initdata for
> > really_do_swap_account produces the following warning. Which is not
> > right, since this function is called from non-init section. This patch
> > fixes it. If anything else please notice.
> > 
> 
> I saw this warning on IA64. But this fix is wrong IMO.
> 
> enable_swap_cgroup() will be called at system boot only:
> 
> start_kernel()
>   cgroup_init()
>     mem_cgroup_create()
>       enable_swap_cgroup()
> 
> I think the proper fix is annotate mem_cgroup_create() with __init_refok.
> 
I think Li Zefan's fix is correct. 
Could you make a patch ? or I'll schedule this as my work.

Thanks,
-Kame


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