From: David Howells <dhowells@redhat.com> To: mtk.manpages@gmail.com Cc: torvalds@linux-foundation.org, dhowells@redhat.com, keyrings@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-man@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] Modify the pipe(2) manpage for notification queues Date: Fri, 07 Aug 2020 15:06:23 +0000 [thread overview] Message-ID: <159681278389.35436.15823690384983762521.stgit@warthog.procyon.org.uk> (raw) In-Reply-To: <159681277616.35436.11229310534842613599.stgit@warthog.procyon.org.uk> Modify the pipe(2) manual page to cover support for notification queues Signed-off-by: David Howells <dhowells@redhat.com> --- man2/pipe.2 | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/man2/pipe.2 b/man2/pipe.2 index 117f8950c..c50b38530 100644 --- a/man2/pipe.2 +++ b/man2/pipe.2 @@ -146,6 +146,13 @@ referred to by the new file descriptors. Using this flag saves extra calls to .BR fcntl (2) to achieve the same result. +.TP +.B O_NOTIFICATION_PIPE +This enables use of the pipe as a notification transport (see +.BR watch_queue (7) +for more information). When a pipe is in this mode, it may not be spliced as +the insertion of notification messages into the pipe buffer can happen +asynchronously and may cause splice to malfunction. .SH RETURN VALUE On success, zero is returned. On error, \-1 is returned, @@ -292,4 +299,5 @@ main(int argc, char *argv[]) .BR vmsplice (2), .BR write (2), .BR popen (3), -.BR pipe (7) +.BR pipe (7), +.BR watch_queue (7)
WARNING: multiple messages have this Message-ID (diff)
From: David Howells <dhowells@redhat.com> To: mtk.manpages@gmail.com Cc: torvalds@linux-foundation.org, dhowells@redhat.com, keyrings@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-man@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] Modify the pipe(2) manpage for notification queues Date: Fri, 07 Aug 2020 16:06:23 +0100 [thread overview] Message-ID: <159681278389.35436.15823690384983762521.stgit@warthog.procyon.org.uk> (raw) In-Reply-To: <159681277616.35436.11229310534842613599.stgit@warthog.procyon.org.uk> Modify the pipe(2) manual page to cover support for notification queues Signed-off-by: David Howells <dhowells@redhat.com> --- man2/pipe.2 | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/man2/pipe.2 b/man2/pipe.2 index 117f8950c..c50b38530 100644 --- a/man2/pipe.2 +++ b/man2/pipe.2 @@ -146,6 +146,13 @@ referred to by the new file descriptors. Using this flag saves extra calls to .BR fcntl (2) to achieve the same result. +.TP +.B O_NOTIFICATION_PIPE +This enables use of the pipe as a notification transport (see +.BR watch_queue (7) +for more information). When a pipe is in this mode, it may not be spliced as +the insertion of notification messages into the pipe buffer can happen +asynchronously and may cause splice to malfunction. .SH RETURN VALUE On success, zero is returned. On error, \-1 is returned, @@ -292,4 +299,5 @@ main(int argc, char *argv[]) .BR vmsplice (2), .BR write (2), .BR popen (3), -.BR pipe (7) +.BR pipe (7), +.BR watch_queue (7)
next prev parent reply other threads:[~2020-08-07 15:06 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-07 15:06 [PATCH 1/2] Add a manpage for watch_queue(7) David Howells 2020-08-07 15:06 ` David Howells 2020-08-07 15:06 ` David Howells [this message] 2020-08-07 15:06 ` [PATCH 2/2] Modify the pipe(2) manpage for notification queues David Howells 2020-08-07 16:05 ` [PATCH 1/2] Add a manpage for watch_queue(7) Ben Boeckel 2020-08-07 16:05 ` Ben Boeckel 2020-08-24 15:27 ` David Howells 2020-08-24 15:27 ` David Howells 2020-08-24 16:58 ` Ben Boeckel 2020-08-24 16:58 ` Ben Boeckel 2020-08-24 17:54 ` David Howells 2020-08-24 17:54 ` David Howells 2020-08-24 15:30 ` David Howells 2020-08-24 15:30 ` David Howells 2020-08-24 15:30 ` [PATCH 2/2] Modify the pipe(2) manpage for notification queues David Howells 2020-08-24 15:30 ` David Howells 2020-08-27 11:54 ` [PATCH 1/2] Add a manpage for watch_queue(7) Michael Kerrisk (man-pages) 2020-08-27 11:54 ` Michael Kerrisk (man-pages)
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