Re: [PATCH 2/2] pipe.7: Add reference that the pipe capacity can be changed.

["Michael Kerrisk (man-pages)" <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 07/06/2014 03:44 PM, Elie De Brauwer wrote:
> In fcntl(2) F_SETPIPE_SZ, F_GETPIPE_SZ and /proc/sys/fs/pipe-max-size are
> defined, however pipe(7) still defines the pipe capacity as being a static
> entity. Adding a reference to fcntl(2).

Hi Elie,

Thanks for that! Applied.

Cheers,

Michael

> Signed-off-by: Elie De Brauwer <eliedebrauwer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  man7/pipe.7 | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/man7/pipe.7 b/man7/pipe.7
> index 78d1cea..64a6761 100644
> --- a/man7/pipe.7
> +++ b/man7/pipe.7
> @@ -133,6 +133,16 @@ so that a writing process does not remain blocked.
>  In Linux versions before 2.6.11, the capacity of a pipe was the same as
>  the system page size (e.g., 4096 bytes on i386).
>  Since Linux 2.6.11, the pipe capacity is 65536 bytes.
> +Since Linux 2.6.35, the pipe capacity can be queried and set using the
> +.BR fcntl (2)
> +.BR F_GETPIPE_SZ
> +and
> +.BR F_SETPIPE_SZ
> +operations.
> +See
> +.BR fcntl (2)
> +for more information.
> +
>  .SS PIPE_BUF
>  POSIX.1-2001 says that
>  .BR write (2)s
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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