From b8dd62acb3d14860fc7d30f761e3a5fb0ae3abcb Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Mon, 9 Oct 2017 11:45:13 +0200 Subject: [PATCH] epoll.7: Note existence of kcmp() KCMP_EPOLL_TFD operation Signed-off-by: Michael Kerrisk --- man7/epoll.7 | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/man7/epoll.7 b/man7/epoll.7 index e0f3ea1b7..521b0d53a 100644 --- a/man7/epoll.7 +++ b/man7/epoll.7 @@ -583,6 +583,12 @@ directory. See .BR proc (5) for further details. +.PP +The +.BR kcmp (2) +.B KCMP_EPOLL_TFD +operation can be used to test whether a file descriptor +is present in an epoll instance. .SH SEE ALSO .BR epoll_create (2), .BR epoll_create1 (2),