Modify the pipe(2) manual page to cover support for notification queues Signed-off-by: David Howells <dhowells@xxxxxxxxxx> --- 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)
