diff -Nur aufs-3.0.orig/fs/aufs/opts.c aufs-3.0/fs/aufs/opts.c
--- aufs-3.0.orig/fs/aufs/opts.c	2011-10-27 00:25:47.000000000 +0200
+++ aufs-3.0/fs/aufs/opts.c	2011-10-27 12:00:10.077514722 +0200
@@ -453,8 +453,12 @@
 }
 
 static match_table_t au_wbr_copyup_policy = {
-	{AuWbrCopyup_TDP, "tdp"},
-	{AuWbrCopyup_TDP, "top-down-parent"},
+	{AuWbrCopyup_TDP_B, "tdp:b"},
+	{AuWbrCopyup_TDP_B, "top-down-parent:b"},
+	{AuWbrCopyup_TDP_B, "tdp"},
+	{AuWbrCopyup_TDP_B, "top-down-parent"},
+	{AuWbrCopyup_TDP_T, "tdp:t"},
+	{AuWbrCopyup_TDP_T, "top-down-parent:t"},
 	{AuWbrCopyup_BUP, "bup"},
 	{AuWbrCopyup_BUP, "bottom-up-parent"},
 	{AuWbrCopyup_BU, "bu"},
diff -Nur aufs-3.0.orig/fs/aufs/opts.h aufs-3.0/fs/aufs/opts.h
--- aufs-3.0.orig/fs/aufs/opts.h	2011-10-27 00:25:47.000000000 +0200
+++ aufs-3.0/fs/aufs/opts.h	2011-10-27 12:02:19.303887540 +0200
@@ -109,11 +109,12 @@
 };
 
 enum {
-	AuWbrCopyup_TDP,	/* top down parent */
+	AuWbrCopyup_TDP_B,	/* top down parent, fallback "buttom up" */
+	AuWbrCopyup_TDP_T,	/* top down parent, fallback "top down" */
 	AuWbrCopyup_BUP,	/* bottom up parent */
 	AuWbrCopyup_BU,		/* bottom up */
 
-	AuWbrCopyup_Def = AuWbrCopyup_TDP
+	AuWbrCopyup_Def = AuWbrCopyup_TDP_B
 };
 
 /* ---------------------------------------------------------------------- */
diff -Nur aufs-3.0.orig/fs/aufs/wbr_policy.c aufs-3.0/fs/aufs/wbr_policy.c
--- aufs-3.0.orig/fs/aufs/wbr_policy.c	2011-10-27 00:25:47.000000000 +0200
+++ aufs-3.0/fs/aufs/wbr_policy.c	2011-10-27 12:17:49.928189182 +0200
@@ -630,12 +630,16 @@
 /* policies for copyup */
 
 /* top down parent */
-static int au_wbr_copyup_tdp(struct dentry *dentry)
+static int au_wbr_copyup_tdp_b(struct dentry *dentry)
 {
-	/* should we support tdp_t too? */
 	return au_wbr_create_tdp_b(dentry, /*isdir, anything is ok*/0);
 }
 
+static int au_wbr_copyup_tdp_t(struct dentry *dentry)
+{
+	return au_wbr_create_tdp_t(dentry, /*isdir, anything is ok*/0);
+}
+
 /* bottom up parent */
 static int au_wbr_copyup_bup(struct dentry *dentry)
 {
@@ -687,8 +691,11 @@
 /* ---------------------------------------------------------------------- */
 
 struct au_wbr_copyup_operations au_wbr_copyup_ops[] = {
-	[AuWbrCopyup_TDP] = {
-		.copyup	= au_wbr_copyup_tdp
+	[AuWbrCopyup_TDP_B] = {
+		.copyup	= au_wbr_copyup_tdp_b
+	},
+	[AuWbrCopyup_TDP_T] = {
+		.copyup	= au_wbr_copyup_tdp_t
 	},
 	[AuWbrCopyup_BUP] = {
 		.copyup	= au_wbr_copyup_bup