From 3c3e9e1035a1b080f21f9cf6d3c34ed55e23e33e Mon Sep 17 00:00:00 2001
From: Enji Cooper <ngie@FreeBSD.org>
Date: Sun, 23 Apr 2017 03:17:32 +0000
Subject: [PATCH] Note that getpagesize(3) can return -1 on failure

MFC after:	5 weeks
Sponsored by:	Dell EMC Isilon
---
 lib/libc/gen/getpagesize.3 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/libc/gen/getpagesize.3 b/lib/libc/gen/getpagesize.3
index ff057df8c01..cf577d72414 100644
--- a/lib/libc/gen/getpagesize.3
+++ b/lib/libc/gen/getpagesize.3
@@ -28,7 +28,7 @@
 .\"     @(#)getpagesize.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 4, 1993
+.Dd April 22, 2017
 .Dt GETPAGESIZE 3
 .Os
 .Sh NAME
@@ -51,6 +51,9 @@ management calls.
 The page size is a system
 page size and may not be the same as the underlying
 hardware page size.
+.Sh RETURN VALUES
+.Nm
+returns the number of bytes in a page on success, -1 on failure.
 .Sh SEE ALSO
 .Xr pagesize 1 ,
 .Xr sbrk 2