Re: fs: dax: do not build on ARC or SH

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On Mon, 2015-02-23 at 12:29 +0100, Arnd Bergmann wrote:
> The DAX implementation relies on the architecture to provide a working
> copy_user_page() function, as reported by Michael Ellerman's kisskb
> build bot:
> 
> fs/dax.c: error: implicit declaration of function 'copy_user_page' [-Werror=implicit-function-declaration]:  => 266:2
> 
> We already have a list of architectures that are known to be incompatible,
> but the list is missing ARC and SH at the moment. Further, blackfin and
> c6x also lack support for this function, but are already excluded because
> they do not support MMU-based kernels.
> 
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Acked-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> ---
> diff --git a/fs/Kconfig b/fs/Kconfig
> index ec35851e5b71..a24d496787d6 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -36,7 +36,7 @@ source "fs/nilfs2/Kconfig"
>  config FS_DAX
>  	bool "Direct Access (DAX) support"
>  	depends on MMU
> -	depends on !(ARM || MIPS || SPARC)
> +	depends on !(ARC || ARM || MIPS || SH || SPARC)

Did you mean
                                             SUPERH?

>  	help
>  	  Direct Access (DAX) can be used on memory-backed block devices.
>  	  If the block device supports DAX and the filesystem supports DAX,
> 

Thanks,


Paul Bolle

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