+ /* Replace the log item's string data with a memory-mapped copy of the
+ * data, now that it has been written to the log file. (Even if it
+ * isn't yet on disk, it should at least be in the page cache and so
+ * available to memory map.) */
+ bluesky_string_unref(item->data);
+ item->data = NULL;
+ bluesky_cloudlog_fetch(item);
+