diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b900af8..2e80a59 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -75,9 +75,6 @@
 
 /* Locking: */
 
-/* Currently used for almost all code touching nfsv4 state: */
-static DEFINE_MUTEX(client_mutex);
-
 /*
  * Currently used for the del_recall_lru and file hash table.  In an
  * effort to decrease the scope of the client_mutex, this spinlock may
@@ -97,12 +94,6 @@
 static struct kmem_cache *stateid_slab;
 static struct kmem_cache *deleg_slab;
 
-void
-nfs4_lock_state(void)
-{
-	mutex_lock(&client_mutex);
-}
-
 static void free_session(struct nfsd4_session *);
 
 static bool is_session_dead(struct nfsd4_session *ses)
@@ -118,12 +109,6 @@
 	return nfs_ok;
 }
 
-void
-nfs4_unlock_state(void)
-{
-	mutex_unlock(&client_mutex);
-}
-
 static bool is_client_expired(struct nfs4_client *clp)
 {
 	return clp->cl_time == 0;
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index a02358f..32a7c29 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -437,8 +437,6 @@
 extern __be32 nfs4_preprocess_stateid_op(struct net *net,
 		struct nfsd4_compound_state *cstate,
 		stateid_t *stateid, int flags, struct file **filp);
-extern void nfs4_lock_state(void);
-extern void nfs4_unlock_state(void);
 void nfs4_put_stid(struct nfs4_stid *s);
 void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *);
 extern void nfs4_release_reclaim(struct nfsd_net *);