Re: [PATCH] include: don't collide __bitwise definitions in 4.10

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On 2/21/17 12:05 PM, Darrick J. Wong wrote:
> Linux 4.10 changed the definition of __bitwise in such a way that
> xfsprogs' definition is no longer a strict match for it.  This causes
> gcc to complain, so only #define it here if the system hasn't already
> done it for us.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>

Makes sense, thanks for catching this.

Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>

> ---
>  include/xfs_arch.h |    8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/include/xfs_arch.h b/include/xfs_arch.h
> index 6e3172c..12cd43e 100644
> --- a/include/xfs_arch.h
> +++ b/include/xfs_arch.h
> @@ -25,10 +25,14 @@
>  #endif
>  
>  #ifdef __CHECKER__
> -#define __bitwise		__attribute__((bitwise))
> +# ifndef __bitwise
> +#  define __bitwise		__attribute__((bitwise))
> +# endif
>  #define __force			__attribute__((force))
>  #else
> -#define __bitwise
> +# ifndef __bitwise
> +#  define __bitwise
> +# endif
>  #define __force
>  #endif
>  
> 

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