Re: [PATCH v2 2/4] posix_spawn.3: Document POSIX_SPAWN_USEVFORK

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On 16/10/2018 16:37, Olivier Gayot wrote:
> Added a few lines about POSIX_SPAWN_USEVFORK so that it appears clearly
> that since glibc 2.24, the flag has no effect.
> 
> Signed-off-by: Olivier Gayot <olivier.gayot@xxxxxxxxxxx>

LGTM.

> ---
>  man3/posix_spawn.3 | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/man3/posix_spawn.3 b/man3/posix_spawn.3
> index e8c0de172..8badb43bf 100644
> --- a/man3/posix_spawn.3
> +++ b/man3/posix_spawn.3
> @@ -382,6 +382,18 @@ the child's process group ID is made the same as its process ID.
>  If the
>  .B POSIX_SPAWN_SETPGROUP
>  flag is not set, the child inherits the parent's process group ID.
> +.TP
> +.B POSIX_SPAWN_USEVFORK
> +Since glibc 2.24, this flag has no effect.
> +On older implementations, setting this flag forces the
> +.BR fork()
> +step to use
> +.BR vfork (2)
> +instead of
> +.BR fork (2).
> +The
> +.B _GNU_SOURCE
> +feature test macro must be defined to obtain the definition of this contant.
>  .PP
>  If
>  .I attrp
> 



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