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Re: Update hppa bits/mman.h from Linux 4.14


On 11/15/2017 02:59 PM, Joseph Myers wrote:
> This patch updates the hppa bits/mman.h based on Linux 4.14.  Some
> MADV_* macros are removed in Linux 4.14 as unused/unimplemented, so
> this patch removes them from glibc, while adding two new macros added
> in Linux 4.14.
> 
> Tested (compilation only) for hppa with build-many-glibcs.py.
> 
> 2017-11-15  Joseph Myers  <joseph@codesourcery.com>
> 
> 	* sysdeps/unix/sysv/linux/hppa/bits/mman.h
> 	[__USE_MISC] (MADV_SPACEAVAIL): Remove macro.
> 	[__USE_MISC] (MADV_VPS_PURGE): Likewise.
> 	[__USE_MISC] (MADV_VPS_INHERIT): Likewise.
> 	[__USE_MISC] (MADV_HWPOISON): New macro.
> 	[__USE_MISC] (MADV_SOFT_OFFLINE): Likewise.

Checked against upstream. LGTM.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> diff --git a/sysdeps/unix/sysv/linux/hppa/bits/mman.h b/sysdeps/unix/sysv/linux/hppa/bits/mman.h
> index 4ad9153..2aaca01 100644
> --- a/sysdeps/unix/sysv/linux/hppa/bits/mman.h
> +++ b/sysdeps/unix/sysv/linux/hppa/bits/mman.h
> @@ -85,9 +85,6 @@
>  # define MADV_SEQUENTIAL  2	/* Expect sequential page references */
>  # define MADV_WILLNEED	  3	/* Will need these pages */
>  # define MADV_DONTNEED	  4	/* Dont need these pages */
> -# 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.  */
>  # define MADV_REMOVE	  9	/* Remove these pages and resources.  */
>  # define MADV_DONTFORK	 10	/* Do not inherit across fork.  */
> @@ -101,6 +98,8 @@
>  # define MADV_DODUMP	 70	/* Clear the MADV_NODUMP flag */
>  # define MADV_WIPEONFORK 71	/* Zero memory on fork, child only.  */
>  # define MADV_KEEPONFORK 72	/* Undo MADV_WIPEONFORK.  */
> +# define MADV_HWPOISON	 100	/* Poison a page for testing.  */
> +# define MADV_SOFT_OFFLINE 101	/* Soft offline page for testing.  */
>  #endif
>  
>  /* The POSIX people had to invent similar names for the same things.  */
> 



-- 
Cheers,
Carlos.


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