linux-kernel - Re: [PATCH v2] mm: move phys_mem_access_prot

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Date:   Fri, 16 Sep 2016 15:55:37 +0200
From:   Ralf Baechle <ralf@...ux-mips.org>
To:     Baoyou Xie <baoyou.xie@...aro.org>
Cc:     tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, arnd@...db.de, akpm@...ux-foundation.org,
        paul.burton@...tec.com, chenhc@...ote.com, david.daney@...ium.com,
        kumba@...too.org, yamada.masahiro@...ionext.com,
        kirill.shutemov@...ux.intel.com, dave.hansen@...ux.intel.com,
        toshi.kani@....com, dan.j.williams@...el.com, luto@...nel.org,
        JBeulich@...e.com, linux-mips@...ux-mips.org,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        xie.baoyou@....com.cn
Subject: Re: [PATCH v2] mm: move phys_mem_access_prot_allowed() declaration
 to pgtable.h

On Tue, Sep 13, 2016 at 03:26:37PM +0800, Baoyou Xie wrote:

> We get 1 warning when building kernel with W=1:
> drivers/char/mem.c:220:12: warning: no previous prototype for 'phys_mem_access_prot_allowed' [-Wmissing-prototypes]
>  int __weak phys_mem_access_prot_allowed(struct file *file,
> 
> In fact, its declaration is spreading to several header files
> in different architecture, but need to be declare in common
> header file.
> 
> So this patch moves phys_mem_access_prot_allowed() to pgtable.h.
> 
> Signed-off-by: Baoyou Xie <baoyou.xie@...aro.org>

Acked-by: Ralf Baechle <ralf@...ux-mips.org>

  Ralf