+ /* If not NULL, a pointer to the extra data that was read from the
+ * dentry. This should be a series of tagged items, each of which
+ * represents a bit of extra metadata, such as the file's object ID.
+ * See tagged_items.c for more information. */
+ void *i_extra;
+
+ /* Size of @i_extra buffer in bytes. If 0, there is no extra data. */
+ size_t i_extra_size;
+