Re: [PATCH] arm/vdso: introduce vdso_mremap hook

[Russell King - ARM Linux]

On Tue, Nov 01, 2016 at 08:22:14PM +0300, Dmitry Safonov wrote:
> diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c
> index 53cf86cf2d1a..d1001f87c2f6 100644
> --- a/arch/arm/kernel/vdso.c
> +++ b/arch/arm/kernel/vdso.c
> @@ -54,8 +54,11 @@ static const struct vm_special_mapping vdso_data_mapping = {
>  	.pages = &vdso_data_page,
>  };
>  
> +static int vdso_mremap(const struct vm_special_mapping *sm,
> +		struct vm_area_struct *new_vma);

I'd much rather avoid this forward declaration.  Is there any reason the
function body can't be here?

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