[PATCH] Update RWF_SUPPORTED for Linux kernel 4.16 [BZ #22947]

[Adhemerval Zanella]

On 03/04/2018 13:07, H.J. Lu wrote:
> Add RWF_APPEND to RWF_SUPPORTED to support Linux kernel 4.16.
> 
> OK for master?

Now 4.16 is out we need to update sysdeps/unix/sysv/linux/bits/uio-ext.h,
bits/uio-ext.h, and manual/llio.texi as well.

> 
> H.J.
> ---
> 	[BZ #22947]
> 	* misc/tst-preadvwritev2-common.c (RWF_APPEND): New.
> 	(RWF_SUPPORTED): Add RWF_APPEND.
> ---
>  misc/tst-preadvwritev2-common.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/misc/tst-preadvwritev2-common.c b/misc/tst-preadvwritev2-common.c
> index 89fd0a3ff5..99d385173b 100644
> --- a/misc/tst-preadvwritev2-common.c
> +++ b/misc/tst-preadvwritev2-common.c
> @@ -34,7 +34,11 @@ do_test_with_invalid_flags (void)
>  #ifndef RWF_NOWAIT
>  # define RWF_NOWAIT 0
>  #endif
> -#define RWF_SUPPORTED	(RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT)
> +#ifndef RWF_APPEND
> +# define RWF_APPEND 0x10
> +#endif
> +#define RWF_SUPPORTED	(RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT \
> +			 | RWF_APPEND)
>    /* Set the next bit from the mask of all supported flags.  */
>    int invalid_flag = RWF_SUPPORTED != 0 ? __builtin_clz (RWF_SUPPORTED) : 2;
>    invalid_flag = 0x1 << ((sizeof (int) * CHAR_BIT) - invalid_flag);
>