diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 8f7fe323e0493350aaa6e3d3a3326faa3e4e76e4..fb99863598be230b53a12a27dc898271fb1c906e 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -249,7 +249,7 @@ static struct dentry *rootfs_mount(struct file_system_type *fs_type,
 {
 	static unsigned long once;
 
-	if (test_and_set_bit(1, &once))
+	if (test_and_set_bit(0, &once))
 		return ERR_PTR(-ENODEV);
 
 	return mount_nodev(fs_type, flags, data, ramfs_fill_super);
@@ -275,21 +275,34 @@ static struct file_system_type rootfs_fs_type = {
 
 static int __init init_ramfs_fs(void)
 {
-	return register_filesystem(&ramfs_fs_type);
+	static unsigned long once;
+	int err;
+
+	if (test_and_set_bit(0, &once))
+		return 0;
+
+	err = bdi_init(&ramfs_backing_dev_info);
+	if (err)
+		return err;
+
+	err = register_filesystem(&ramfs_fs_type);
+	if (err)
+		bdi_destroy(&ramfs_backing_dev_info);
+
+	return err;
 }
 module_init(init_ramfs_fs)
 
 int __init init_rootfs(void)
 {
-	int err;
+	int err = register_filesystem(&rootfs_fs_type);
 
-	err = bdi_init(&ramfs_backing_dev_info);
 	if (err)
 		return err;
 
-	err = register_filesystem(&rootfs_fs_type);
+	err = init_ramfs_fs();
 	if (err)
-		bdi_destroy(&ramfs_backing_dev_info);
+		unregister_filesystem(&rootfs_fs_type);
 
 	return err;
 }