diff --git a/share/man/man9/VOP_COPY_FILE_RANGE.9 b/share/man/man9/VOP_COPY_FILE_RANGE.9
--- a/share/man/man9/VOP_COPY_FILE_RANGE.9
+++ b/share/man/man9/VOP_COPY_FILE_RANGE.9
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 30, 2020
+.Dd February 27, 2023
 .Dt VOP_COPY_FILE_RANGE 9
 .Os
 .Sh NAME
@@ -138,7 +138,14 @@
 Corrupted data was detected while reading/writing the files.
 .It Bq Er ENOSPC
 The file system is full.
+.It Bq Er EOPNOTSUPP
+The file system was not able to perform the operation, but it should be still
+possible to perform generic copy.
+.It Bq Er EXDEV
+The file system was not able to perform the operation, but it should be still
+possible to perform generic copy.
 .El
 .Sh SEE ALSO
+.Xr copy_file_range 2 ,
 .Xr vn_rdwr 9 ,
 .Xr vnode 9
diff --git a/sys/fs/fuse/fuse_vnops.c b/sys/fs/fuse/fuse_vnops.c
--- a/sys/fs/fuse/fuse_vnops.c
+++ b/sys/fs/fuse/fuse_vnops.c
@@ -847,16 +847,16 @@
 	int err;
 
 	if (mp != vnode_mount(outvp))
-		goto fallback;
+		return (EOPNOTSUPP);
 
 	if (incred->cr_uid != outcred->cr_uid)
-		goto fallback;
+		return (EOPNOTSUPP);
 
 	if (incred->cr_groups[0] != outcred->cr_groups[0])
-		goto fallback;
+		return (EOPNOTSUPP);
 
 	if (fsess_not_impl(mp, FUSE_COPY_FILE_RANGE))
-		goto fallback;
+		return (EOPNOTSUPP);
 
 	if (ap->a_fsizetd == NULL)
 		td = curthread;
@@ -941,10 +941,7 @@
 
 	if (err == ENOSYS) {
 		fsess_set_notimpl(mp, FUSE_COPY_FILE_RANGE);
-fallback:
-		err = vn_generic_copy_file_range(ap->a_invp, ap->a_inoffp,
-		    ap->a_outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags,
-		    ap->a_incred, ap->a_outcred, ap->a_fsizetd);
+		err = EOPNOTSUPP;
 	}
 
 	/*
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
@@ -3897,11 +3897,8 @@
 	bool consecutive, must_commit, tryoutcred;
 
 	/* NFSv4.2 Copy is not permitted for infile == outfile. */
-	if (invp == outvp) {
-generic_copy:
-		return (vn_generic_copy_file_range(invp, ap->a_inoffp,
-		    outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags,
-		    ap->a_incred, ap->a_outcred, ap->a_fsizetd));
+	if (invp == outvp || invp->v_mount != outvp->v_mount) {
+		return (EOPNOTSUPP);
 	}
 
 	/* Lock both vnodes, avoiding risk of deadlock. */
@@ -3942,7 +3939,7 @@
 		VOP_UNLOCK(outvp);
 		if (mp != NULL)
 			vn_finished_write(mp);
-		goto generic_copy;
+		return (EOPNOTSUPP);
 	}
 	mtx_unlock(&nmp->nm_mtx);
 
diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c
--- a/sys/kern/vfs_default.c
+++ b/sys/kern/vfs_default.c
@@ -1465,12 +1465,8 @@
 static int
 vop_stdcopy_file_range(struct vop_copy_file_range_args *ap)
 {
-	int error;
 
-	error = vn_generic_copy_file_range(ap->a_invp, ap->a_inoffp,
-	    ap->a_outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags, ap->a_incred,
-	    ap->a_outcred, ap->a_fsizetd);
-	return (error);
+	return (EOPNOTSUPP);
 }
 
 int
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -3074,12 +3074,16 @@
 	 * which can handle copies across multiple file systems.
 	 */
 	*lenp = len;
-	if (invp->v_mount == outvp->v_mount)
+	if (invp->v_mount->mnt_vfc == outvp->v_mount->mnt_vfc) {
 		error = VOP_COPY_FILE_RANGE(invp, inoffp, outvp, outoffp,
 		    lenp, flags, incred, outcred, fsize_td);
-	else
+	} else {
+		error = EOPNOTSUPP;
+	}
+	if (error == EOPNOTSUPP || error == EXDEV) {
 		error = vn_generic_copy_file_range(invp, inoffp, outvp,
 		    outoffp, lenp, flags, incred, outcred, fsize_td);
+	}
 out:
 	return (error);
 }