linux-kernel - Re: [PATCH 1/3][mmotm] kcore: more fixes for init

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Date:	Thu, 17 Sep 2009 13:55:20 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 1/3][mmotm] kcore: more fixes for init

On Thu, Sep 17, 2009 at 10:42 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@...fujitsu.com> wrote:
> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
>
> proc_kcore_init() doesn't check NULL case.
> fix it and remove unnecessary comments.
>
> Cc: WANG Cong <xiyou.wangcong@...il.com>
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

Acked-by: WANG Cong <xiyou.wangcong@...il.com>

Thanks.

> ---
>  fs/proc/kcore.c |    5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> Index: mmotm-2.6.31-Sep14/fs/proc/kcore.c
> ===================================================================
> --- mmotm-2.6.31-Sep14.orig/fs/proc/kcore.c
> +++ mmotm-2.6.31-Sep14/fs/proc/kcore.c
> @@ -606,6 +606,10 @@ static int __init proc_kcore_init(void)
>  {
>        proc_root_kcore = proc_create("kcore", S_IRUSR, NULL,
>                                      &proc_kcore_operations);
> +       if (!proc_root_kcore) {
> +               printk(KERN_ERR "couldn't create /proc/kcore\n");
> +               return 0; /* Always returns 0. */
> +       }
>        /* Store text area if it's special */
>        proc_kcore_text_init();
>        /* Store vmalloc area */
> @@ -615,7 +619,6 @@ static int __init proc_kcore_init(void)
>        /* Store direct-map area from physical memory map */
>        kcore_update_ram();
>        hotplug_memory_notifier(kcore_callback, 0);
> -       /* Other special area, area-for-module etc is arch specific. */
>
>        return 0;
>  }
>
>
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