Re: [PATCH 2/5] uapi: simplify __ARCH_FLOCK{,64}_PAD a little

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On Mon, Jan 31, 2022 at 2:49 PM Christoph Hellwig <hch@xxxxxx> wrote:
>
> Don't bother to define the symbols empty, just don't use them.  That
> makes the intent a little more clear.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>  include/uapi/asm-generic/fcntl.h       | 12 ++++--------
>  tools/include/uapi/asm-generic/fcntl.h | 12 ++++--------
>  2 files changed, 8 insertions(+), 16 deletions(-)
>
> diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h
> index caa482e3b01af..c53897ca5d402 100644
> --- a/include/uapi/asm-generic/fcntl.h
> +++ b/include/uapi/asm-generic/fcntl.h
> @@ -193,22 +193,16 @@ struct f_owner_ex {
>  #define F_LINUX_SPECIFIC_BASE  1024
>
>  #ifndef HAVE_ARCH_STRUCT_FLOCK
> -#ifndef __ARCH_FLOCK_PAD
> -#define __ARCH_FLOCK_PAD
> -#endif
> -
>  struct flock {
>         short   l_type;
>         short   l_whence;
>         __kernel_off_t  l_start;
>         __kernel_off_t  l_len;
>         __kernel_pid_t  l_pid;
> +#ifdef __ARCH_FLOCK_PAD
>         __ARCH_FLOCK_PAD
> -};
>  #endif
> -
> -#ifndef __ARCH_FLOCK64_PAD
> -#define __ARCH_FLOCK64_PAD
> +};
>  #endif
>
>  struct flock64 {
> @@ -217,7 +211,9 @@ struct flock64 {
>         __kernel_loff_t l_start;
>         __kernel_loff_t l_len;
>         __kernel_pid_t  l_pid;
> +#ifdef __ARCH_FLOCK64_PAD
>         __ARCH_FLOCK64_PAD
> +#endif
>  };
>
>  #endif /* _ASM_GENERIC_FCNTL_H */
> diff --git a/tools/include/uapi/asm-generic/fcntl.h b/tools/include/uapi/asm-generic/fcntl.h
> index 4a49d33ca4d55..82054502b9748 100644
> --- a/tools/include/uapi/asm-generic/fcntl.h
> +++ b/tools/include/uapi/asm-generic/fcntl.h
> @@ -188,22 +188,16 @@ struct f_owner_ex {
>  #define F_LINUX_SPECIFIC_BASE  1024
>
>  #ifndef HAVE_ARCH_STRUCT_FLOCK
> -#ifndef __ARCH_FLOCK_PAD
> -#define __ARCH_FLOCK_PAD
> -#endif
> -
>  struct flock {
>         short   l_type;
>         short   l_whence;
>         __kernel_off_t  l_start;
>         __kernel_off_t  l_len;
>         __kernel_pid_t  l_pid;
> +#ifdef __ARCH_FLOCK_PAD
>         __ARCH_FLOCK_PAD
> -};
>  #endif
> -
> -#ifndef __ARCH_FLOCK64_PAD
> -#define __ARCH_FLOCK64_PAD
> +};
>  #endif
>
>  struct flock64 {
> @@ -212,7 +206,9 @@ struct flock64 {
>         __kernel_loff_t l_start;
>         __kernel_loff_t l_len;
>         __kernel_pid_t  l_pid;
> +#ifdef __ARCH_FLOCK64_PAD
>         __ARCH_FLOCK64_PAD
> +#endif
>  };
>
>  #endif /* _ASM_GENERIC_FCNTL_H */
> --
> 2.30.2
>
Reviewed-by: Guo Ren <guoren@xxxxxxxxxx>

-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/



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