--- IO-AIO/AIO.pm	2012/05/28 17:00:19	1.226
+++ IO-AIO/AIO.pm	2012/05/29 03:58:02	1.227
@@ -1979,6 +1979,9 @@
 C<$w_off> are C<undef>, then C<NULL> is passed for these, otherwise they
 should be the file offset.
 
+C<$r_fh> and C<$w_fh> should not refer to the same file, as splice might
+silently corrupt the data in this case.
+
 The following symbol flag values are available: C<IO::AIO::SPLICE_F_MOVE>,
 C<IO::AIO::SPLICE_F_NONBLOCK>, C<IO::AIO::SPLICE_F_MORE> and
 C<IO::AIO::SPLICE_F_GIFT>.