diff --git a/lib/libc/sys/mlock.2 b/lib/libc/sys/mlock.2
index 0c05b7b3056b..ed9c15a7f0e5 100644
--- a/lib/libc/sys/mlock.2
+++ b/lib/libc/sys/mlock.2
@@ -28,7 +28,7 @@
 .\"	@(#)mlock.2	8.2 (Berkeley) 12/11/93
 .\" $FreeBSD$
 .\"
-.Dd August 10, 2004
+.Dd July 27, 2010
 .Dt MLOCK 2
 .Os
 .Sh NAME
@@ -116,11 +116,12 @@ The caller is not the super-user.
 .It Bq Er EINVAL
 The address given is not page aligned or the length is negative.
 .It Bq Er EAGAIN
-Locking the indicated range would exceed either the system or per-process
-limit for locked memory.
+Locking the indicated range would exceed the system limit for locked memory.
 .It Bq Er ENOMEM
 Some portion of the indicated address range is not allocated.
 There was an error faulting/mapping a page.
+Locking the indicated range would exceed the per-process limit for locked
+memory.
 .El
 The
 .Fn munlock
diff --git a/lib/libc/sys/mlockall.2 b/lib/libc/sys/mlockall.2
index d09ce27b644d..54ae23e4360c 100644
--- a/lib/libc/sys/mlockall.2
+++ b/lib/libc/sys/mlockall.2
@@ -30,7 +30,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd June 12, 1999
+.Dd July 27, 2010
 .Dt MLOCKALL 2
 .Os
 .Sh NAME
@@ -72,6 +72,8 @@ limit and the per-process
 .Dv RLIMIT_MEMLOCK
 resource limit.
 .Pp
+These calls are only available to the super-user.
+.Pp
 The
 .Fn munlockall
 call unlocks any locked memory regions in the process address space.