diff --git a/sys/fs/nfsclient/nfs_clrpcops.c b/sys/fs/nfsclient/nfs_clrpcops.c
index 6e4c046cfd60..097006457cd5 100644
--- a/sys/fs/nfsclient/nfs_clrpcops.c
+++ b/sys/fs/nfsclient/nfs_clrpcops.c
@@ -567,6 +567,11 @@ nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
 
 	if (vnode_vtype(vp) != VREG)
 		return (0);
+
+	/* For forced unmounts, just return. */
+	if ((vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF) != 0)
+		return (0);
+
 	if (doclose)
 		error = nfscl_doclose(vp, &clp, p);
 	else
diff --git a/sys/fs/nfsclient/nfs_clstate.c b/sys/fs/nfsclient/nfs_clstate.c
index 8e9aa6ac885b..65427a73786c 100644
--- a/sys/fs/nfsclient/nfs_clstate.c
+++ b/sys/fs/nfsclient/nfs_clstate.c
@@ -692,6 +692,10 @@ nfscl_getcl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
 	int igotlock = 0, error, trystalecnt, clidinusedelay, i;
 	u_int16_t idlen = 0;
 
+	/* For forced unmounts, just return an error. */
+	if ((vnode_mount(vp)->mnt_kern_flag & MNTK_UNMOUNTF) != 0)
+		return (EPERM);
+
 	if (cred != NULL) {
 		getcredhostuuid(cred, uuid, sizeof uuid);
 		idlen = strlen(uuid);
diff --git a/sys/fs/nfsclient/nfs_clvfsops.c b/sys/fs/nfsclient/nfs_clvfsops.c
index a37dd51a674d..858677624e7e 100644
--- a/sys/fs/nfsclient/nfs_clvfsops.c
+++ b/sys/fs/nfsclient/nfs_clvfsops.c
@@ -1386,6 +1386,10 @@ nfs_sync(struct mount *mp, int waitfor)
 
 	td = curthread;
 
+	/* For a forced unmount, just return EPERM. */
+	if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0)
+		return (EPERM);
+
 	/*
 	 * Force stale buffer cache information to be flushed.
 	 */