linux-kernel - Re: [PATCH] mm: do not export ioremap_page

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Message-ID: <588558EB.2060505@huawei.com>
Date:   Mon, 23 Jan 2017 09:14:19 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <akpm@...ux-foundation.org>, <minchan@...nel.org>,
        <mhocko@...nel.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: do not export ioremap_page_range symbol for external
 module

On 2017/1/22 20:58, zhongjiang wrote:
> From: zhong jiang <zhongjiang@...wei.com>
>
> Recently, I find the ioremap_page_range had been abusing. The improper
> address mapping is a issue. it will result in the crash. so, remove
> the symbol. It can be replaced by the ioremap_cache or others symbol.
>
> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
> ---
>  lib/ioremap.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/lib/ioremap.c b/lib/ioremap.c
> index 86c8911..a3e14ce 100644
> --- a/lib/ioremap.c
> +++ b/lib/ioremap.c
> @@ -144,4 +144,3 @@ int ioremap_page_range(unsigned long addr,
>  
>  	return err;
>  }
> -EXPORT_SYMBOL_GPL(ioremap_page_range);
self nack