--- IO-AIO/AIO.xs	2005/08/22 23:20:37	1.32
+++ IO-AIO/AIO.xs	2005/08/22 23:21:57	1.33
@@ -452,6 +452,7 @@
      res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
 
      if (!res && errno == EAGAIN)
+       /* maybe on others, too, as usual, the manpage leaves you guessing */
        res = sbytes;
    }