--- src/sys/kern/vfs_subr.c	2008/05/18 05:54:25	1.114
+++ src/sys/kern/vfs_subr.c	2008/07/12 01:09:46	1.115
@@ -1056,6 +1056,23 @@ addaliasu(struct vnode *nvp, int x, int
 }
 
 /*
+ * Simple call that a filesystem can make to try to get rid of a
+ * vnode.  It will fail if anyone is referencing the vnode (including
+ * the caller).
+ *
+ * The filesystem can check whether its in-memory inode structure still
+ * references the vp on return.
+ */
+void
+vclean_unlocked(struct vnode *vp)
+{
+	vx_get(vp);
+	if (sysref_isactive(&vp->v_sysref) == 0)
+		vclean_vxlocked(vp, 0);
+	vx_put(vp);
+}
+
+/*
  * Disassociate a vnode from its underlying filesystem. 
  *
  * The vnode must be VX locked and referenced.  In all normal situations