From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael Kerrisk (man-pages)" Subject: Re: [PATCH 2/2] pipe.7: Add reference that the pipe capacity can be changed. Date: Mon, 07 Jul 2014 14:35:54 +0200 Message-ID: <53BA942A.3010807@gmail.com> References: <1404654251-8293-1-git-send-email-eliedebrauwer@gmail.com> <1404654251-8293-3-git-send-email-eliedebrauwer@gmail.com> <53BA8ACA.700@bfs.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <53BA8ACA.700-fPG8STNUNVg@public.gmane.org> Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: wharms-fPG8STNUNVg@public.gmane.org, Elie De Brauwer Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-man@vger.kernel.org On 07/07/2014 01:55 PM, walter harms wrote: > > > Am 06.07.2014 15:44, schrieb Elie De Brauwer: >> 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). >> >> Signed-off-by: Elie De Brauwer >> --- >> 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. >> + > > Could to add a line like: > "the default pipe capacity is still 65536 bytes." ? (or what ever) Yup, seems worthwhile. Added. Thanks, Walter. Cheers, Michael -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html