--- src/sys/vfs/isofs/cd9660/cd9660_vfsops.c	2006/12/23 00:41:29	1.43
+++ src/sys/vfs/isofs/cd9660/cd9660_vfsops.c	2007/05/09 00:53:35	1.44
@@ -290,7 +290,7 @@ iso_mountfs(struct vnode *devvp, struct
 	 */
 	if ((error = vfs_mountedon(devvp)))
 		return error;
-	if (count_udev(devvp->v_udev) > 0)
+	if (count_udev(devvp->v_umajor, devvp->v_uminor) > 0)
 		return EBUSY;
 	if ((error = vinvalbuf(devvp, V_SAVE, 0, 0)))
 		return (error);
@@ -842,7 +842,8 @@ again:
 	case VCHR:
 	case VBLK:
 		vp->v_ops = &mp->mnt_vn_spec_ops;
-		addaliasu(vp, ip->inode.iso_rdev);
+		addaliasu(vp, umajor(ip->inode.iso_rdev),
+			  uminor(ip->inode.iso_rdev));
 		break;
 	case VREG:
 	case VDIR: