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diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -341,6 +341,7 @@
netlink.4 \
netmap.4 \
${_nfe.4} \
+ nfslockd.4 \
${_nfsmb.4} \
ng_async.4 \
ng_bpf.4 \
diff --git a/share/man/man4/nfslockd.4 b/share/man/man4/nfslockd.4
new file mode 100644
--- /dev/null
+++ b/share/man/man4/nfslockd.4
@@ -0,0 +1,45 @@
+.\"-
+.\" Copyright (c) 2024 Dag-Erling Smørgrav
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd May 8, 2024
+.Dt NFSLOCKD 4
+.Os
+.Sh NAME
+.Nm nfslockd
+.Nd NFS advisory locking
+.Sh SYNOPSIS
+To compile this driver into the kernel, place the following lines in
+your kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "options NFSLOCKD"
+.Ed
+.Pp
+Alternatively, to load the driver as a module at boot time, place the
+following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+nfslockd_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+driver provides kernel support for NFSv3 advisory locking.
+It works in tandem with
+.Xr rpc.lockd 8 ,
+which will normally load it on startup if it is not already loaded or
+compiled-in.
+.Sh SEE ALSO
+.Xr rpc.lockd 8
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Fx 6.4 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written by
+.An Doug Rabson Aq Mt dfr@FreeBSD.org .
diff --git a/usr.sbin/rpc.lockd/lockd.c b/usr.sbin/rpc.lockd/lockd.c
--- a/usr.sbin/rpc.lockd/lockd.c
+++ b/usr.sbin/rpc.lockd/lockd.c
@@ -188,7 +188,8 @@
kernel_lockd_client = FALSE;
if (modfind("nfslockd") < 0) {
if (kldload("nfslockd") < 0) {
- fprintf(stderr, "Can't find or load kernel support for rpc.lockd - using non-kernel implementation\n");
+ fprintf(stderr, "Unable to load nfslockd(4), "
+ "using userland implementation\n");
} else {
kernel_lockd = TRUE;
}
diff --git a/usr.sbin/rpc.lockd/rpc.lockd.8 b/usr.sbin/rpc.lockd/rpc.lockd.8
--- a/usr.sbin/rpc.lockd/rpc.lockd.8
+++ b/usr.sbin/rpc.lockd/rpc.lockd.8
@@ -27,7 +27,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd November 21, 2019
+.Dd May 8, 2024
.Dt RPC.LOCKD 8
.Os
.Sh NAME
@@ -44,7 +44,7 @@
The
.Nm
utility provides monitored and unmonitored file and record locking services
-in an NFS environment.
+in an NFSv3 environment.
To monitor the status of hosts requesting locks,
the locking daemon typically operates in conjunction
with
@@ -137,6 +137,7 @@
.El
.Sh SEE ALSO
.Xr syslog 3 ,
+.Xr nfslockd 4 ,
.Xr rc.conf 5 ,
.Xr rpc.statd 8
.Sh STANDARDS

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