diff -rupN linux-2.6.27.21-0.1_1//fs/ext4/Makefile linux-2.6.27.21-0.1_2//fs/ext4/Makefile
--- linux-2.6.27.21-0.1_1//fs/ext4/Makefile	2009-08-21 15:12:51.000000000 +0530
+++ linux-2.6.27.21-0.1_2//fs/ext4/Makefile	2009-08-21 15:13:23.000000000 +0530
@@ -6,7 +6,8 @@ obj-$(CONFIG_EXT4DEV_FS) += ext4dev.o
 
 ext4-y	:= balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o iopen.o \
		ioctl.o namei.o super.o symlink.o hash.o resize.o extents.o \
-		ext4_jbd2.o migrate.o mballoc.o block_validity.o move_extent.o
+		ext4_jbd2.o migrate.o mballoc.o block_validity.o move_extent.o \
+		dynlocks.o

 ext4-$(CONFIG_EXT4_FS_XATTR)		+= xattr.o xattr_user.o xattr_trusted.o
 ext4-$(CONFIG_EXT4_FS_POSIX_ACL)	+= acl.o
diff -rupN linux-2.6.27.21-0.1_1//fs/ext4/super.c linux-2.6.27.21-0.1_2//fs/ext4/super.c
--- linux-2.6.27.21-0.1_1//fs/ext4/super.c	2009-08-21 15:12:51.000000000 +0530
+++ linux-2.6.27.21-0.1_2//fs/ext4/super.c	2009-08-21 15:18:18.000000000 +0530
@@ -4126,6 +4126,7 @@ static int __init init_ext4_fs(void)
 	err = init_inodecache();
 	if (err)
 		goto out1;
+	dynlock_cache_init();
 	err = register_filesystem(&ext4_fs_type);
 	if (err)
 		goto out;
@@ -4149,6 +4150,7 @@ static void __exit exit_ext4_fs(void)
 	unregister_filesystem(&ext4_fs_type);
 	unregister_filesystem(&ext4dev_fs_type);
 	destroy_inodecache();
+	dynlock_cache_exit();
 	exit_ext4_xattr();
 	exit_ext4_mballoc();
 	remove_proc_entry("fs/ext4", NULL);