expired.
.TP
.B EINVAL
-The supplied file descriptor,
-.IR epfd ,
+.IR epfd
is not an
.B epoll
-file descriptor, or the
+file descriptor, or
.I maxevents
-parameter is less than or equal to zero.
+is less than or equal to zero.
.SH CONFORMING TO
.BR epoll_wait (2)
is a new API introduced in Linux kernel 2.5.44.