diff --git a/sys/fs/nfsclient/nfs_clvnops.c b/sys/fs/nfsclient/nfs_clvnops.c
--- a/sys/fs/nfsclient/nfs_clvnops.c
+++ b/sys/fs/nfsclient/nfs_clvnops.c
@@ -647,6 +647,11 @@
 	NFSLOCKNODE(np);
 	if (np->n_flag & NMODIFIED) {
 		NFSUNLOCKNODE(np);
+		if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) {
+			NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY);
+			if (VN_IS_DOOMED(vp))
+				return (EBADF);
+		}
 		error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
 		if (error == EINTR || error == EIO) {
 			if (NFS_ISV4(vp))
@@ -683,6 +688,11 @@
 			if (vp->v_type == VDIR)
 				np->n_direofoffset = 0;
 			NFSUNLOCKNODE(np);
+			if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) {
+				NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY);
+				if (VN_IS_DOOMED(vp))
+					return (EBADF);
+			}
 			error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
 			if (error == EINTR || error == EIO) {
 				if (NFS_ISV4(vp))
@@ -703,6 +713,11 @@
 	    (vp->v_type == VREG)) {
 		if (np->n_directio_opens == 0) {
 			NFSUNLOCKNODE(np);
+			if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) {
+				NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY);
+				if (VN_IS_DOOMED(vp))
+					return (EBADF);
+			}
 			error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
 			if (error) {
 				if (NFS_ISV4(vp))
@@ -748,6 +763,11 @@
 	if (vp->v_writecount <= -1) {
 		if ((obj = vp->v_object) != NULL &&
 		    vm_object_mightbedirty(obj)) {
+			if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) {
+				NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY);
+				if (VN_IS_DOOMED(vp))
+					return (EBADF);
+			}
 			VM_OBJECT_WLOCK(obj);
 			vm_object_page_clean(obj, 0, 0, OBJPC_SYNC);
 			VM_OBJECT_WUNLOCK(obj);