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SubjectRe: [PATCH] sh: add copy_user_page() alias for __copy_user()
On Tue, Sep 22, 2015 at 03:46:51PM -0600, Ross Zwisler wrote:
> copy_user_page() is needed by DAX. Without this we get a compile error
> for DAX on SH:
>
> fs/dax.c:280:2: error: implicit declaration of function ‘copy_user_page’
> [-Werror=implicit-function-declaration]
> copy_user_page(vto, (void __force *)vfrom, vaddr, to);
> ^
>
> This was done with a random config that happened to include DAX support.
>
> This patch has only been compile tested.
>
> Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
> ---
> Apologies for the resend, I wanted to add some more recipients.
> ---
> arch/sh/include/asm/page.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h
> index fe20d14..ceb5201 100644
> --- a/arch/sh/include/asm/page.h
> +++ b/arch/sh/include/asm/page.h
> @@ -59,6 +59,7 @@ pages_do_alias(unsigned long addr1, unsigned long addr2)
>
> #define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
> extern void copy_page(void *to, void *from);
> +#define copy_user_page(to, from, vaddr, pg) __copy_user(to, from, PAGE_SIZE)
>
> struct page;
> struct vm_area_struct;

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