Re: [PATCH] arch: uapi: asm: mman.h: Let MADV_FREE have same value for all architectures

[Minchan Kim <minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

Hello Chen,

n Fri, Dec 05, 2014 at 06:58:29AM +0800, Chen Gang wrote:
> For uapi, need try to let all macros have same value, and MADV_FREE is
> added into main branch recently, so need redefine MADV_FREE for it.
> 
> At present, '8' can be shared with all architectures, so redefine it to
> '8'.

Recently, I cleaned MADV_FREE patchset up and will send uptodate version
to Andrew to replace old implementation in mmotm tree which is not a
linus's tree so this change shouldn't break anyting.

When I look at status of this patch, it seems Andrew missed it
so I want to include this patch when I respin if you don't mind.

Is it okay for you?

Thanks.

> 
> Signed-off-by: Chen Gang <gang.chen.5i5j-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  arch/alpha/include/uapi/asm/mman.h     | 2 +-
>  arch/mips/include/uapi/asm/mman.h      | 2 +-
>  arch/parisc/include/uapi/asm/mman.h    | 2 +-
>  arch/xtensa/include/uapi/asm/mman.h    | 2 +-
>  include/uapi/asm-generic/mman-common.h | 2 +-
>  5 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/alpha/include/uapi/asm/mman.h b/arch/alpha/include/uapi/asm/mman.h
> index 836fbd4..0b8a5de 100644
> --- a/arch/alpha/include/uapi/asm/mman.h
> +++ b/arch/alpha/include/uapi/asm/mman.h
> @@ -44,9 +44,9 @@
>  #define MADV_WILLNEED	3		/* will need these pages */
>  #define	MADV_SPACEAVAIL	5		/* ensure resources are available */
>  #define MADV_DONTNEED	6		/* don't need these pages */
> -#define MADV_FREE	7		/* free pages only if memory pressure */
>  
>  /* common/generic parameters */
> +#define MADV_FREE	8		/* free pages only if memory pressure */
>  #define MADV_REMOVE	9		/* remove these pages & resources */
>  #define MADV_DONTFORK	10		/* don't inherit across fork */
>  #define MADV_DOFORK	11		/* do inherit across fork */
> diff --git a/arch/mips/include/uapi/asm/mman.h b/arch/mips/include/uapi/asm/mman.h
> index 106e741..d247f54 100644
> --- a/arch/mips/include/uapi/asm/mman.h
> +++ b/arch/mips/include/uapi/asm/mman.h
> @@ -67,9 +67,9 @@
>  #define MADV_SEQUENTIAL 2		/* expect sequential page references */
>  #define MADV_WILLNEED	3		/* will need these pages */
>  #define MADV_DONTNEED	4		/* don't need these pages */
> -#define MADV_FREE	5		/* free pages only if memory pressure */
>  
>  /* common parameters: try to keep these consistent across architectures */
> +#define MADV_FREE	8		/* free pages only if memory pressure */
>  #define MADV_REMOVE	9		/* remove these pages & resources */
>  #define MADV_DONTFORK	10		/* don't inherit across fork */
>  #define MADV_DOFORK	11		/* do inherit across fork */
> diff --git a/arch/parisc/include/uapi/asm/mman.h b/arch/parisc/include/uapi/asm/mman.h
> index 6cb8db7..700d83f 100644
> --- a/arch/parisc/include/uapi/asm/mman.h
> +++ b/arch/parisc/include/uapi/asm/mman.h
> @@ -40,9 +40,9 @@
>  #define MADV_SPACEAVAIL 5               /* insure that resources are reserved */
>  #define MADV_VPS_PURGE  6               /* Purge pages from VM page cache */
>  #define MADV_VPS_INHERIT 7              /* Inherit parents page size */
> -#define MADV_FREE	8		/* free pages only if memory pressure */
>  
>  /* common/generic parameters */
> +#define MADV_FREE	8		/* free pages only if memory pressure */
>  #define MADV_REMOVE	9		/* remove these pages & resources */
>  #define MADV_DONTFORK	10		/* don't inherit across fork */
>  #define MADV_DOFORK	11		/* do inherit across fork */
> diff --git a/arch/xtensa/include/uapi/asm/mman.h b/arch/xtensa/include/uapi/asm/mman.h
> index 1b19f25..77eaca4 100644
> --- a/arch/xtensa/include/uapi/asm/mman.h
> +++ b/arch/xtensa/include/uapi/asm/mman.h
> @@ -80,9 +80,9 @@
>  #define MADV_SEQUENTIAL	2		/* expect sequential page references */
>  #define MADV_WILLNEED	3		/* will need these pages */
>  #define MADV_DONTNEED	4		/* don't need these pages */
> -#define MADV_FREE	5		/* free pages only if memory pressure */
>  
>  /* common parameters: try to keep these consistent across architectures */
> +#define MADV_FREE	8		/* free pages only if memory pressure */
>  #define MADV_REMOVE	9		/* remove these pages & resources */
>  #define MADV_DONTFORK	10		/* don't inherit across fork */
>  #define MADV_DOFORK	11		/* do inherit across fork */
> diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h
> index 7a94102..8695959 100644
> --- a/include/uapi/asm-generic/mman-common.h
> +++ b/include/uapi/asm-generic/mman-common.h
> @@ -34,9 +34,9 @@
>  #define MADV_SEQUENTIAL	2		/* expect sequential page references */
>  #define MADV_WILLNEED	3		/* will need these pages */
>  #define MADV_DONTNEED	4		/* don't need these pages */
> -#define MADV_FREE	5		/* free pages only if memory pressure */
>  
>  /* common parameters: try to keep these consistent across architectures */
> +#define MADV_FREE	8		/* free pages only if memory pressure */
>  #define MADV_REMOVE	9		/* remove these pages & resources */
>  #define MADV_DONTFORK	10		/* don't inherit across fork */
>  #define MADV_DOFORK	11		/* do inherit across fork */
> -- 
> 1.9.3