--- /dev/null
+--- a/fs/Kconfig
++++ b/fs/Kconfig
+@@ -419,6 +419,7 @@
+
+ source "fs/xfs/Kconfig"
+ source "fs/gfs2/Kconfig"
++source "fs/yaffs2/Kconfig"
+
+ config OCFS2_FS
+ tristate "OCFS2 file system support"
+--- a/fs/Makefile
++++ b/fs/Makefile
+@@ -120,3 +120,4 @@
+ obj-$(CONFIG_DEBUG_FS) += debugfs/
+ obj-$(CONFIG_OCFS2_FS) += ocfs2/
+ obj-$(CONFIG_GFS2_FS) += gfs2/
++obj-$(CONFIG_YAFFS_FS) += yaffs2/