diff --git a/lib/libc/rpc/auth_des.c b/lib/libc/rpc/auth_des.c
index b4b7d549d1df..8f363e91a64f 100644
--- a/lib/libc/rpc/auth_des.c
+++ b/lib/libc/rpc/auth_des.c
@@ -52,6 +52,7 @@
 #undef NIS
 #include <rpcsvc/nis.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = 	"@(#)auth_des.c	2.2 88/07/29 4.0 RPCSRC; from 1.9 88/02/08 SMI";
@@ -481,7 +482,6 @@ static struct auth_ops *
 authdes_ops(void)
 {
 	static struct auth_ops ops;
-	extern mutex_t authdes_ops_lock;
 
 	/* VARIABLES PROTECTED BY ops_lock: ops */
  
diff --git a/lib/libc/rpc/auth_none.c b/lib/libc/rpc/auth_none.c
index 8546af317ab3..01ad70139c7c 100644
--- a/lib/libc/rpc/auth_none.c
+++ b/lib/libc/rpc/auth_none.c
@@ -52,6 +52,7 @@ __FBSDID("$FreeBSD$");
 #include <rpc/xdr.h>
 #include <rpc/auth.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
 
 #define MAX_MARSHAL_SIZE 20
 
@@ -81,7 +82,6 @@ authnone_create()
 	struct authnone_private *ap = authnone_private;
 	XDR xdr_stream;
 	XDR *xdrs;
-	extern mutex_t authnone_lock;
 
 	mutex_lock(&authnone_lock);
 	if (ap == 0) {
@@ -113,7 +113,6 @@ authnone_marshal(AUTH *client, XDR *xdrs)
 {
 	struct authnone_private *ap;
 	bool_t dummy;
-	extern mutex_t authnone_lock;
 
 	assert(xdrs != NULL);
 
@@ -161,7 +160,6 @@ static struct auth_ops *
 authnone_ops()
 {
 	static struct auth_ops ops;
-	extern mutex_t ops_lock;
  
 /* VARIABLES PROTECTED BY ops_lock: ops */
  
diff --git a/lib/libc/rpc/auth_unix.c b/lib/libc/rpc/auth_unix.c
index 29082bd99102..3fcccd4a0619 100644
--- a/lib/libc/rpc/auth_unix.c
+++ b/lib/libc/rpc/auth_unix.c
@@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
 #include <rpc/auth.h>
 #include <rpc/auth_unix.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
 
 /* auth_unix.c */
 static void authunix_nextverf (AUTH *);
@@ -356,7 +357,6 @@ static struct auth_ops *
 authunix_ops()
 {
 	static struct auth_ops ops;
-	extern mutex_t ops_lock;
 
 	/* VARIABLES PROTECTED BY ops_lock: ops */
 
diff --git a/lib/libc/rpc/clnt_dg.c b/lib/libc/rpc/clnt_dg.c
index ff97379935fc..761cc651e427 100644
--- a/lib/libc/rpc/clnt_dg.c
+++ b/lib/libc/rpc/clnt_dg.c
@@ -60,6 +60,7 @@ __FBSDID("$FreeBSD$");
 #include <err.h>
 #include "un-namespace.h"
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 
 #define	RPC_MAX_BACKOFF		30 /* seconds */
@@ -92,7 +93,6 @@ static void clnt_dg_destroy(CLIENT *);
  *	at a time.
  */
 static int	*dg_fd_locks;
-extern mutex_t clnt_fd_lock;
 static cond_t	*dg_cv;
 #define	release_fd_lock(fd, mask) {		\
 	mutex_lock(&clnt_fd_lock);	\
@@ -754,7 +754,6 @@ static struct clnt_ops *
 clnt_dg_ops()
 {
 	static struct clnt_ops ops;
-	extern mutex_t	ops_lock;
 	sigset_t mask;
 	sigset_t newmask;
 
diff --git a/lib/libc/rpc/clnt_raw.c b/lib/libc/rpc/clnt_raw.c
index 5b11a5f2470b..9d34a3d445cf 100644
--- a/lib/libc/rpc/clnt_raw.c
+++ b/lib/libc/rpc/clnt_raw.c
@@ -57,8 +57,7 @@ __FBSDID("$FreeBSD$");
 #include <rpc/rpc.h>
 #include <rpc/raw.h>
 #include "un-namespace.h"
-
-extern mutex_t clntraw_lock;
+#include "mt_misc.h"
 
 #define MCALL_MSG_SIZE 24
 
@@ -296,7 +295,6 @@ static struct clnt_ops *
 clnt_raw_ops()
 {
 	static struct clnt_ops ops;
-	extern mutex_t  ops_lock;
 
 	/* VARIABLES PROTECTED BY ops_lock: ops */
 
diff --git a/lib/libc/rpc/clnt_simple.c b/lib/libc/rpc/clnt_simple.c
index ae9c87f6e34f..12b6679f240f 100644
--- a/lib/libc/rpc/clnt_simple.c
+++ b/lib/libc/rpc/clnt_simple.c
@@ -56,6 +56,7 @@ __FBSDID("$FreeBSD$");
 #include <fcntl.h>
 #include <unistd.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
 
 #ifndef MAXHOSTNAMELEN
 #define	MAXHOSTNAMELEN 64
@@ -112,7 +113,6 @@ rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype)
 	enum clnt_stat clnt_stat;
 	struct timeval timeout, tottimeout;
 	static thread_key_t rpc_call_key;
-	extern mutex_t tsd_lock;
 	int main_thread = 1;
 
 	if ((main_thread = thr_main())) {
diff --git a/lib/libc/rpc/clnt_vc.c b/lib/libc/rpc/clnt_vc.c
index 10780a55523d..e15caac9e908 100644
--- a/lib/libc/rpc/clnt_vc.c
+++ b/lib/libc/rpc/clnt_vc.c
@@ -79,6 +79,7 @@ __FBSDID("$FreeBSD$");
 #include <rpc/rpc.h>
 #include "un-namespace.h"
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 #define MCALL_MSG_SIZE 24
 
@@ -129,7 +130,6 @@ struct ct_data {
  *      should be the first thing fixed.  One step at a time.
  */
 static int      *vc_fd_locks;
-extern mutex_t  clnt_fd_lock;
 static cond_t   *vc_cv;
 #define release_fd_lock(fd, mask) {	\
 	mutex_lock(&clnt_fd_lock);	\
@@ -753,7 +753,6 @@ static struct clnt_ops *
 clnt_vc_ops()
 {
 	static struct clnt_ops ops;
-	extern mutex_t  ops_lock;
 	sigset_t mask, newmask;
 
 	/* VARIABLES PROTECTED BY ops_lock: ops */
diff --git a/lib/libc/rpc/getpublickey.c b/lib/libc/rpc/getpublickey.c
index 57b327e47b8c..d7b3736b25d1 100644
--- a/lib/libc/rpc/getpublickey.c
+++ b/lib/libc/rpc/getpublickey.c
@@ -63,7 +63,7 @@ int (*__getpublickey_LOCAL)() = 0;
 /*
  * Get somebody's public key
  */
-int
+static int
 __getpublickey_real(netname, publickey)
 	char *netname;
 	char *publickey;
diff --git a/lib/libc/rpc/key_call.c b/lib/libc/rpc/key_call.c
index be4cf82a9a46..615f24d9e867 100644
--- a/lib/libc/rpc/key_call.c
+++ b/lib/libc/rpc/key_call.c
@@ -61,6 +61,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/wait.h>
 #include <sys/fcntl.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
 
 
 #define	KEY_TIMEOUT	5	/* per-try timeout in seconds */
@@ -307,7 +308,6 @@ int	vers;
 	int main_thread;
 	int fd;
 	static thread_key_t key_call_key;
-	extern mutex_t tsd_lock;
 
 #define	TOTAL_TIMEOUT	30	/* total timeout talking to keyserver */
 #define	TOTAL_TRIES	5	/* Number of tries */
diff --git a/lib/libc/rpc/mt_misc.c b/lib/libc/rpc/mt_misc.c
index da9c96861334..62416117382d 100644
--- a/lib/libc/rpc/mt_misc.c
+++ b/lib/libc/rpc/mt_misc.c
@@ -11,6 +11,25 @@ __FBSDID("$FreeBSD$");
 #include <stdlib.h>
 #include <string.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
+
+/* Take these objects out of the application namespace. */
+#define	svc_lock		__svc_lock
+#define	svc_fd_lock		__svc_fd_lock
+#define	rpcbaddr_cache_lock	__rpcbaddr_cache_lock
+#define	authdes_ops_lock	__authdes_ops_lock
+#define	authnone_lock		__authnone_lock
+#define	authsvc_lock		__authsvc_lock
+#define	clnt_fd_lock		__clnt_fd_lock
+#define	clntraw_lock		__clntraw_lock
+#define	dupreq_lock		__dupreq_lock
+#define	loopnconf_lock		__loopnconf_lock
+#define	ops_lock		__ops_lock
+#define	proglst_lock		__proglst_lock
+#define	rpcsoc_lock		__rpcsoc_lock
+#define	svcraw_lock		__svcraw_lock
+#define	tsd_lock		__tsd_lock
+#define	xprtlist_lock		__xprtlist_lock
 
 /* protects the services list (svc.c) */
 pthread_rwlock_t	svc_lock = PTHREAD_RWLOCK_INITIALIZER;
@@ -21,22 +40,12 @@ pthread_rwlock_t	svc_fd_lock = PTHREAD_RWLOCK_INITIALIZER;
 /* protects the RPCBIND address cache */
 pthread_rwlock_t	rpcbaddr_cache_lock = PTHREAD_RWLOCK_INITIALIZER;
 
-/* protects authdes cache (svcauth_des.c) */
-pthread_mutex_t	authdes_lock = PTHREAD_MUTEX_INITIALIZER;
-
 /* serializes authdes ops initializations */
 pthread_mutex_t authdes_ops_lock = PTHREAD_MUTEX_INITIALIZER;
 
 /* protects des stats list */
 pthread_mutex_t svcauthdesstats_lock = PTHREAD_MUTEX_INITIALIZER;
 
-#ifdef KERBEROS
-/* auth_kerb.c serialization */
-pthread_mutex_t authkerb_lock = PTHREAD_MUTEX_INITIALIZER;
-/* protects kerb stats list */
-pthread_mutex_t svcauthkerbstats_lock = PTHREAD_MUTEX_INITIALIZER;
-#endif /* KERBEROS */
-
 /* auth_none.c serialization */
 pthread_mutex_t	authnone_lock = PTHREAD_MUTEX_INITIALIZER;
 
@@ -49,27 +58,15 @@ pthread_mutex_t	clnt_fd_lock = PTHREAD_MUTEX_INITIALIZER;
 /* clnt_raw.c serialization */
 pthread_mutex_t	clntraw_lock = PTHREAD_MUTEX_INITIALIZER;
 
-/* domainname and domain_fd (getdname.c) and default_domain (rpcdname.c) */
-pthread_mutex_t	dname_lock = PTHREAD_MUTEX_INITIALIZER;
-
 /* dupreq variables (svc_dg.c) */
 pthread_mutex_t	dupreq_lock = PTHREAD_MUTEX_INITIALIZER;
 
-/* protects first_time and hostname (key_call.c) */
-pthread_mutex_t	keyserv_lock = PTHREAD_MUTEX_INITIALIZER;
-
-/* serializes rpc_trace() (rpc_trace.c) */
-pthread_mutex_t	libnsl_trace_lock = PTHREAD_MUTEX_INITIALIZER;
-
 /* loopnconf (rpcb_clnt.c) */
 pthread_mutex_t	loopnconf_lock = PTHREAD_MUTEX_INITIALIZER;
 
 /* serializes ops initializations */
 pthread_mutex_t	ops_lock = PTHREAD_MUTEX_INITIALIZER;
 
-/* protects ``port'' static in bindresvport() */
-pthread_mutex_t	portnum_lock = PTHREAD_MUTEX_INITIALIZER;
-
 /* protects proglst list (svc_simple.c) */
 pthread_mutex_t	proglst_lock = PTHREAD_MUTEX_INITIALIZER;
 
@@ -85,9 +82,6 @@ pthread_mutex_t	tsd_lock = PTHREAD_MUTEX_INITIALIZER;
 /* xprtlist (svc_generic.c) */
 pthread_mutex_t	xprtlist_lock = PTHREAD_MUTEX_INITIALIZER;
 
-/* serializes calls to public key routines */
-pthread_mutex_t serialize_pkey = PTHREAD_MUTEX_INITIALIZER;
-
 #undef	rpc_createerr
 
 struct rpc_createerr rpc_createerr;
diff --git a/lib/libc/rpc/mt_misc.h b/lib/libc/rpc/mt_misc.h
new file mode 100644
index 000000000000..c706faf3625a
--- /dev/null
+++ b/lib/libc/rpc/mt_misc.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 12006 The FreeBSD Project. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef _MT_MISC_H
+#define	_MT_MISC_H
+
+/* Take these locks out of the application namespace. */
+#define	svc_lock		__svc_lock
+#define	svc_fd_lock		__svc_fd_lock
+#define	rpcbaddr_cache_lock	__rpcbaddr_cache_lock
+#define	authdes_ops_lock	__authdes_ops_lock
+#define	authnone_lock		__authnone_lock
+#define	authsvc_lock		__authsvc_lock
+#define	clnt_fd_lock		__clnt_fd_lock
+#define	clntraw_lock		__clntraw_lock
+#define	dupreq_lock		__dupreq_lock
+#define	loopnconf_lock		__loopnconf_lock
+#define	ops_lock		__ops_lock
+#define	proglst_lock		__proglst_lock
+#define	rpcsoc_lock		__rpcsoc_lock
+#define	svcraw_lock		__svcraw_lock
+#define	tsd_lock		__tsd_lock
+#define	xprtlist_lock		__xprtlist_lock
+
+extern pthread_rwlock_t	svc_lock;
+extern pthread_rwlock_t	svc_fd_lock;
+extern pthread_rwlock_t	rpcbaddr_cache_lock;
+extern pthread_mutex_t	authdes_ops_lock;
+extern pthread_mutex_t	svcauthdesstats_lock;
+extern pthread_mutex_t	authnone_lock;
+extern pthread_mutex_t	authsvc_lock;
+extern pthread_mutex_t	clnt_fd_lock;
+extern pthread_mutex_t	clntraw_lock;
+extern pthread_mutex_t	dupreq_lock;
+extern pthread_mutex_t	loopnconf_lock;
+extern pthread_mutex_t	ops_lock;
+extern pthread_mutex_t	proglst_lock;
+extern pthread_mutex_t	rpcsoc_lock;
+extern pthread_mutex_t	svcraw_lock;
+extern pthread_mutex_t	tsd_lock;
+extern pthread_mutex_t	xprtlist_lock;
+
+#endif
diff --git a/lib/libc/rpc/rpc_com.h b/lib/libc/rpc/rpc_com.h
index a7cfd9730d04..f2bf11f5bf2c 100644
--- a/lib/libc/rpc/rpc_com.h
+++ b/lib/libc/rpc/rpc_com.h
@@ -74,8 +74,6 @@ int __rpc_socktype2seman(int);
 void *rpc_nullproc(CLIENT *);
 int __rpc_sockisbound(int);
 
-struct netbuf *__rpcb_findaddr(rpcprog_t, rpcvers_t, const struct netconfig *,
-    const char *, CLIENT **);
 struct netbuf *__rpcb_findaddr_timed(rpcprog_t, rpcvers_t,
     const struct netconfig *, const char *host, CLIENT **clpp,
     struct timeval *tp);
diff --git a/lib/libc/rpc/rpc_generic.c b/lib/libc/rpc/rpc_generic.c
index 4baa63315494..a5168c457fe7 100644
--- a/lib/libc/rpc/rpc_generic.c
+++ b/lib/libc/rpc/rpc_generic.c
@@ -63,6 +63,7 @@ __FBSDID("$FreeBSD$");
 #include <rpc/nettype.h>
 #include "un-namespace.h"
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 struct handle {
 	NCONF_HANDLE *nhandle;
@@ -236,7 +237,6 @@ __rpc_getconfip(nettype)
 	struct netconfig *dummy;
 	int main_thread;
 	static thread_key_t tcp_key, udp_key;
-	extern mutex_t tsd_lock;
 
 	if ((main_thread = thr_main())) {
 		netid_udp = netid_udp_main;
diff --git a/lib/libc/rpc/rpc_soc.c b/lib/libc/rpc/rpc_soc.c
index 7a9830186a70..59220634db13 100644
--- a/lib/libc/rpc/rpc_soc.c
+++ b/lib/libc/rpc/rpc_soc.c
@@ -74,8 +74,7 @@ __FBSDID("$FreeBSD$");
 #include "un-namespace.h"
 
 #include "rpc_com.h"
-
-extern mutex_t	rpcsoc_lock;
+#include "mt_misc.h"
 
 static CLIENT *clnt_com_create(struct sockaddr_in *, rpcprog_t, rpcvers_t,
     int *, u_int, u_int, char *);
@@ -399,7 +398,6 @@ clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult)
 	void	       *resultsp;	/* pointer to results */
 	resultproc_t	eachresult;	/* call with each result obtained */
 {
-	extern mutex_t tsd_lock;
 
 	if (thr_main())
 		clnt_broadcast_result_main = eachresult;
diff --git a/lib/libc/rpc/rpcb_clnt.c b/lib/libc/rpc/rpcb_clnt.c
index d92115814c7e..ac34c3454394 100644
--- a/lib/libc/rpc/rpcb_clnt.c
+++ b/lib/libc/rpc/rpcb_clnt.c
@@ -89,6 +89,7 @@ __FBSDID("$FreeBSD$");
 #include "un-namespace.h"
 
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 static struct timeval tottimeout = { 60, 0 };
 static const struct timeval rmttimeout = { 3, 0 };
@@ -165,7 +166,6 @@ __rpc_control(request, info)
  * block all clnt_create's if we are trying to connect to a host that's down,
  * since the lock will be held all during that time.
  */
-extern rwlock_t	rpcbaddr_cache_lock;
 
 /*
  * The routines check_cache(), add_cache(), delete_cache() manage the
@@ -448,7 +448,6 @@ local_rpcb()
 	CLIENT *client;
 	static struct netconfig *loopnconf;
 	static char *hostname;
-	extern mutex_t loopnconf_lock;
 	int sock;
 	size_t tsize;
 	struct netbuf nbuf;
@@ -675,7 +674,7 @@ got_entry(relp, nconf)
  * Quick check to see if rpcbind is up.  Tries to connect over
  * local transport.
  */
-bool_t
+static bool_t
 __rpcbind_is_up()
 {
 	struct netconfig *nconf;
diff --git a/lib/libc/rpc/svc.c b/lib/libc/rpc/svc.c
index 4241eecf07cd..b924bdec7847 100644
--- a/lib/libc/rpc/svc.c
+++ b/lib/libc/rpc/svc.c
@@ -62,6 +62,7 @@ __FBSDID("$FreeBSD$");
 #include "un-namespace.h"
 
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 #define	RQCRED_SIZE	400		/* this size is excessive */
 
@@ -84,9 +85,6 @@ static struct svc_callout {
 	void		    (*sc_dispatch)(struct svc_req *, SVCXPRT *);
 } *svc_head;
 
-extern rwlock_t svc_lock;
-extern rwlock_t svc_fd_lock;
-
 static struct svc_callout *svc_find(rpcprog_t, rpcvers_t,
     struct svc_callout **, char *);
 static void __xprt_do_unregister (SVCXPRT *xprt, bool_t dolock);
diff --git a/lib/libc/rpc/svc_auth.c b/lib/libc/rpc/svc_auth.c
index 05202d094ec2..eb1a5f2f4a93 100644
--- a/lib/libc/rpc/svc_auth.c
+++ b/lib/libc/rpc/svc_auth.c
@@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$");
 #include <rpc/rpc.h>
 #include <stdlib.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
 
 /*
  * svcauthsw is the bdevsw of server side authentication.
@@ -100,7 +101,6 @@ _authenticate(rqst, msg)
 	int cred_flavor;
 	struct authsvc *asp;
 	enum auth_stat dummy;
-	extern mutex_t authsvc_lock;
 
 /* VARIABLES PROTECTED BY authsvc_lock: asp, Auths */
 
@@ -172,7 +172,6 @@ svc_auth_reg(cred_flavor, handler)
 	enum auth_stat (*handler)(struct svc_req *, struct rpc_msg *);
 {
 	struct authsvc *asp;
-	extern mutex_t authsvc_lock;
 
 	switch (cred_flavor) {
 	    case AUTH_NULL:
diff --git a/lib/libc/rpc/svc_dg.c b/lib/libc/rpc/svc_dg.c
index 14e927c5a33c..1c602bc57ed2 100644
--- a/lib/libc/rpc/svc_dg.c
+++ b/lib/libc/rpc/svc_dg.c
@@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
 #include "un-namespace.h"
 
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 #define	su_data(xprt)	((struct svc_dg_data *)(xprt->xp_p2))
 #define	rpc_buffer(xprt) ((xprt)->xp_p1)
@@ -306,7 +307,6 @@ svc_dg_ops(xprt)
 {
 	static struct xp_ops ops;
 	static struct xp_ops2 ops2;
-	extern mutex_t ops_lock;
 
 /* VARIABLES PROTECTED BY ops_lock: ops */
 
@@ -392,8 +392,6 @@ struct cl_cache {
 	(xid % (SPARSENESS * ((struct cl_cache *) \
 		su_data(transp)->su_cache)->uc_size))
 
-extern mutex_t	dupreq_lock;
-
 /*
  * Enable use of the cache. Returns 1 on success, 0 on failure.
  * Note: there is no disable.
diff --git a/lib/libc/rpc/svc_generic.c b/lib/libc/rpc/svc_generic.c
index 6df52e686ef2..7f6cfb84eaeb 100644
--- a/lib/libc/rpc/svc_generic.c
+++ b/lib/libc/rpc/svc_generic.c
@@ -61,6 +61,7 @@ __FBSDID("$FreeBSD$");
 #include "un-namespace.h"
 
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 extern int __svc_vc_setflag(SVCXPRT *, int);
 
@@ -89,7 +90,6 @@ svc_create(dispatch, prognum, versnum, nettype)
 	SVCXPRT *xprt;
 	struct netconfig *nconf;
 	void *handle;
-	extern mutex_t xprtlist_lock;
 
 /* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
 
diff --git a/lib/libc/rpc/svc_raw.c b/lib/libc/rpc/svc_raw.c
index ba5b0170f2a1..32d1ff765b23 100644
--- a/lib/libc/rpc/svc_raw.c
+++ b/lib/libc/rpc/svc_raw.c
@@ -55,6 +55,7 @@ __FBSDID("$FreeBSD$");
 #include <rpc/raw.h>
 #include <stdlib.h>
 #include "un-namespace.h"
+#include "mt_misc.h"
 
 #ifndef UDPMSGSIZE
 #define	UDPMSGSIZE 8800
@@ -70,8 +71,6 @@ static struct svc_raw_private {
 	char	verf_body[MAX_AUTH_BYTES];
 } *svc_raw_private;
 
-extern mutex_t	svcraw_lock;
-
 static enum xprt_stat svc_raw_stat(SVCXPRT *);
 static bool_t svc_raw_recv(SVCXPRT *, struct rpc_msg *);
 static bool_t svc_raw_reply(SVCXPRT *, struct rpc_msg *);
@@ -239,7 +238,6 @@ svc_raw_ops(xprt)
 {
 	static struct xp_ops ops;
 	static struct xp_ops2 ops2;
-	extern mutex_t ops_lock;
 
 /* VARIABLES PROTECTED BY ops_lock: ops */
 
diff --git a/lib/libc/rpc/svc_run.c b/lib/libc/rpc/svc_run.c
index 13ddac86a0a2..b4627d65875b 100644
--- a/lib/libc/rpc/svc_run.c
+++ b/lib/libc/rpc/svc_run.c
@@ -52,13 +52,13 @@ __FBSDID("$FreeBSD$");
 
 #include <rpc/rpc.h>
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 void
 svc_run()
 {
 	fd_set readfds, cleanfds;
 	struct timeval timeout;
-	extern rwlock_t svc_fd_lock;
 
 	timeout.tv_sec = 30;
 	timeout.tv_usec = 0;
@@ -92,8 +92,6 @@ svc_run()
 void
 svc_exit()
 {
-	extern rwlock_t svc_fd_lock;
-
 	rwlock_wrlock(&svc_fd_lock);
 	FD_ZERO(&svc_fdset);
 	rwlock_unlock(&svc_fd_lock);
diff --git a/lib/libc/rpc/svc_simple.c b/lib/libc/rpc/svc_simple.c
index 2acae4b3a5ff..95d34a60a9fb 100644
--- a/lib/libc/rpc/svc_simple.c
+++ b/lib/libc/rpc/svc_simple.c
@@ -60,6 +60,7 @@ __FBSDID("$FreeBSD$");
 #include "un-namespace.h"
 
 #include "rpc_com.h"
+#include "mt_misc.h"
 
 static void universal(struct svc_req *, SVCXPRT *);
 
@@ -106,8 +107,6 @@ rpc_reg(prognum, versnum, procnum, progname, inproc, outproc, nettype)
 	struct netconfig *nconf;
 	int done = FALSE;
 	void *handle;
-	extern mutex_t proglst_lock;
-
 
 
 	if (procnum == NULLPROC) {
@@ -250,7 +249,6 @@ universal(rqstp, transp)
 	char *outdata;
 	char *xdrbuf;
 	struct proglst *pl;
-	extern mutex_t proglst_lock;
 
 	/*
 	 * enforce "procnum 0 is echo" convention
diff --git a/lib/libc/rpc/svc_vc.c b/lib/libc/rpc/svc_vc.c
index 35846946479d..50c66512bed2 100644
--- a/lib/libc/rpc/svc_vc.c
+++ b/lib/libc/rpc/svc_vc.c
@@ -68,10 +68,9 @@ __FBSDID("$FreeBSD$");
 #include <rpc/rpc.h>
 
 #include "rpc_com.h"
+#include "mt_misc.h"
 #include "un-namespace.h"
 
-extern rwlock_t svc_fd_lock;
-
 static SVCXPRT *makefd_xprt(int, u_int, u_int);
 static bool_t rendezvous_request(SVCXPRT *, struct rpc_msg *);
 static enum xprt_stat rendezvous_stat(SVCXPRT *);
@@ -672,7 +671,6 @@ svc_vc_ops(xprt)
 {
 	static struct xp_ops ops;
 	static struct xp_ops2 ops2;
-	extern mutex_t ops_lock;
 
 /* VARIABLES PROTECTED BY ops_lock: ops, ops2 */
 
@@ -697,7 +695,6 @@ svc_vc_rendezvous_ops(xprt)
 {
 	static struct xp_ops ops;
 	static struct xp_ops2 ops2;
-	extern mutex_t ops_lock;
 
 	mutex_lock(&ops_lock);
 	if (ops.xp_recv == NULL) {