- * The result is cached in volume->v_tm_cachetime for TM_USED_CACHETIME secounds.
- * The cached value volume->v_tm_cachetime is updated by volume->v_appended. The latter
- * is increased by X every time the client appends X bytes to a file (in fork.c).
+ * The result of the calculation is returned in "volume->v_tm_used".
+ * "volume->v_appended" gets reset to 0.
+ * "volume->v_tm_cachetime" is updated with the current time from time(NULL).
+ *
+ * "volume->v_tm_used" is cached for TM_USED_CACHETIME seconds and updated by
+ * "volume->v_appended". The latter is increased by X every time the client
+ * appends X bytes to a file (in fork.c).