--- SOURCES/kernel-2.6.18-i686-PAE.config.orig	2008-04-30 01:08:18.000000000 +0800
+++ SOURCES/kernel-2.6.18-i686-PAE.config	2009-01-30 10:36:55.000000000 +0900
@@ -2465,6 +2465,13 @@
 CONFIG_DEBUG_FS=y
 
 #
+# Layered filesystems
+#
+CONFIG_UNION_FS=m
+# CONFIG_UNION_FS_XATTR is not set
+# CONFIG_UNION_FS_DEBUG is not set
+
+#
 # Miscellaneous filesystems
 #
 # CONFIG_ADFS_FS is not seta
--- SOURCES/kernel-2.6.18-i686-debug.config.orig	2008-04-30 01:08:18.000000000 +0800
+++ SOURCES/kernel-2.6.18-i686-debug.config	2009-01-30 10:52:10.000000000 +0900
@@ -2465,6 +2465,13 @@
 CONFIG_DEBUG_FS=y
 
 #
+# Layered filesystems
+#
+CONFIG_UNION_FS=m
+# CONFIG_UNION_FS_XATTR is not set
+# CONFIG_UNION_FS_DEBUG is not set
+
+#
 # Miscellaneous filesystems
 #
 # CONFIG_ADFS_FS is not seta
--- SOURCES/kernel-2.6.18-i686.config.orig	2008-04-30 01:08:18.000000000 +0800
+++ SOURCES/kernel-2.6.18-i686.config	2009-01-30 10:37:18.000000000 +0900
@@ -2465,6 +2465,13 @@
 CONFIG_DEBUG_FS=y
 
 #
+# Layered filesystems
+#
+CONFIG_UNION_FS=m
+# CONFIG_UNION_FS_XATTR is not set
+# CONFIG_UNION_FS_DEBUG is not set
+
+#
 # Miscellaneous filesystems
 #
 # CONFIG_ADFS_FS is not seta
--- SOURCES/kernel-2.6.18-i686-xen.config.orig	2008-04-30 01:08:19.000000000 +0800
+++ SOURCES/kernel-2.6.18-i686-xen.config	2009-01-30 10:36:40.000000000 +0900
@@ -2465,6 +2465,13 @@
 CONFIG_DEBUG_FS=y
 
 #
+# Layered filesystems
+#
+CONFIG_UNION_FS=m
+# CONFIG_UNION_FS_XATTR is not set
+# CONFIG_UNION_FS_DEBUG is not set
+
+#
 # Miscellaneous filesystems
 #
 # CONFIG_ADFS_FS is not seta