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Comparing IO-AIO/AIO.pm (file contents):
Revision 1.251 by root, Wed Feb 11 19:32:36 2015 UTC vs.
Revision 1.252 by root, Sat Jun 13 00:06:13 2015 UTC

… …
725=item aio_allocate $fh, $mode, $offset, $len, $callback->($status) 725=item aio_allocate $fh, $mode, $offset, $len, $callback->($status)
726 726
727Allocates or frees disk space according to the C<$mode> argument. See the 727Allocates or frees disk space according to the C<$mode> argument. See the
728linux C<fallocate> documentation for details. 728linux C<fallocate> documentation for details.
729 729
730C<$mode> can currently be C<0> or C<IO::AIO::FALLOC_FL_KEEP_SIZE> 730C<$mode> is usually C<0> or C<IO::AIO::FALLOC_FL_KEEP_SIZE> to allocate
731to allocate space, or C<IO::AIO::FALLOC_FL_PUNCH_HOLE | 731space, or C<IO::AIO::FALLOC_FL_PUNCH_HOLE | IO::AIO::FALLOC_FL_KEEP_SIZE>,
732IO::AIO::FALLOC_FL_KEEP_SIZE>, to deallocate a file range. 732to deallocate a file range.
733
734IO::AIO also supports C<FALLOC_FL_COLLAPSE_RANGE>, to remove a range
735(without leaving a hole) and C<FALLOC_FL_ZERO_RANGE>, to zero a range (see
736your L<fallocate(2)> manpage).
733 737
734The file system block size used by C<fallocate> is presumably the 738The file system block size used by C<fallocate> is presumably the
735C<f_bsize> returned by C<statvfs>. 739C<f_bsize> returned by C<statvfs>.
736 740
737If C<fallocate> isn't available or cannot be emulated (currently no 741If C<fallocate> isn't available or cannot be emulated (currently no

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