+/* The file variant has three file sizes:
+ * - file_size : size of file as written into Yaffs - including data in cache.
+ * - stored_size - size of file as stored on media.
+ * - shrink_size - size of file that has been shrunk back to.
+ *
+ * The stored_size and file_size might be different because the data written
+ * into the cache will increase the file_size but the stored_size will only
+ * change when the data is actually stored.
+ *
+ */