Index: package/kernel/modules/fs.mk
===================================================================
--- package/kernel/modules/fs.mk	(revision 19496)
+++ package/kernel/modules/fs.mk	(working copy)
@@ -120,7 +120,8 @@
 	CONFIG_EXT4_FS_POSIX_ACL=y \
 	CONFIG_EXT4_FS_SECURITY=y \
 	CONFIG_EXT4_FS \
-	CONFIG_JBD2
+	CONFIG_JBD2 \
+	CONFIG_LBD=y
   DEPENDS:= @LINUX_2_6 +kmod-crc16 $(if $(DUMP)$(CONFIG_FS_MBCACHE),+kmod-fs-mbcache)
   FILES:= \
 	$(LINUX_DIR)/fs/ext4/ext4.$(LINUX_KMOD_SUFFIX) \