[PATCH] posix: Add p{readv,writev}2 flags to generic uio-ext.h

[Adhemerval Zanella]

I will commit this shortly if no one opposes it.

On 11/10/2017 17:39, Adhemerval Zanella wrote:
> This patch follows a suggestion from Florian to add the flags on generic
> API [1].
> 
> Checked on x86_64-linux-gnu.
> 
> 	* bits/uio-ext.h (RWF_HIPRI, RWF_DSYNC, RWF_SYNC, RWF_NOWAIT): New
> 	defines.
> 	* sysdeps/unix/sysv/linux/bits/uio-ext.h: Fix comment format.
> 
> [1] https://sourceware.org/ml/libc-alpha/2017-09/msg00159.html
> 
> ---
>  ChangeLog                              | 5 +++++
>  bits/uio-ext.h                         | 6 +++++-
>  sysdeps/unix/sysv/linux/bits/uio-ext.h | 3 +--
>  3 files changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/bits/uio-ext.h b/bits/uio-ext.h
> index cd4039c..cba75a7 100644
> --- a/bits/uio-ext.h
> +++ b/bits/uio-ext.h
> @@ -23,6 +23,10 @@
>  # error "Never include <bits/uio-ext.h> directly; use <sys/uio.h> instead."
>  #endif
>  
> -/* This operating system does not extend sys/uio.h.  */
> +/* Flags for preadv2/pwritev2.  */
> +#define RWF_HIPRI	0x00000001 /* High priority request.  */
> +#define RWF_DSYNC	0x00000002 /* per-IO O_DSYNC.  */
> +#define RWF_SYNC	0x00000004 /* per-IO O_SYNC.  */
> +#define RWF_NOWAIT	0x00000008 /* per-IO nonblocking mode.  */
>  
>  #endif /* sys/uio_ext.h */
> diff --git a/sysdeps/unix/sysv/linux/bits/uio-ext.h b/sysdeps/unix/sysv/linux/bits/uio-ext.h
> index 751fc49..f931fd1 100644
> --- a/sysdeps/unix/sysv/linux/bits/uio-ext.h
> +++ b/sysdeps/unix/sysv/linux/bits/uio-ext.h
> @@ -41,8 +41,7 @@ extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec,
>  				  unsigned long int __flags)
>    __THROW;
>  
> -
> -/* Flags for preadv2/pwritev2: */
> +/* Flags for preadv2/pwritev2.  */
>  #define RWF_HIPRI	0x00000001 /* High priority request.  */
>  #define RWF_DSYNC	0x00000002 /* per-IO O_DSYNC.  */
>  #define RWF_SYNC	0x00000004 /* per-IO O_SYNC.  */
>