--- IO-AIO/AIO.pm	2012/04/10 05:01:33	1.225
+++ IO-AIO/AIO.pm	2012/07/25 16:32:30	1.229
@@ -223,6 +223,7 @@
    aio_chown $fh_or_path, $uid, $gid, $callback->($status)
    aio_chmod $fh_or_path, $mode, $callback->($status)
    aio_truncate $fh_or_path, $offset, $callback->($status)
+   aio_allocate $fh, $mode, $offset, $len, $callback->($status)
    aio_unlink $pathname, $callback->($status)
    aio_mknod $pathname, $mode, $dev, $callback->($status)
    aio_link $srcpath, $dstpath, $callback->($status)
@@ -274,6 +275,8 @@
 
    IO::AIO::sendfile $ofh, $ifh, $offset, $count
    IO::AIO::fadvise $fh, $offset, $len, $advice
+   IO::AIO::mmap $scalar, $length, $prot, $flags[, $fh[, $offset]]
+   IO::AIO::munmap $scalar
    IO::AIO::madvise $scalar, $offset, $length, $advice
    IO::AIO::mprotect $scalar, $offset, $length, $protect
    IO::AIO::munlock $scalar, $offset = 0, $length = undef
@@ -638,6 +641,22 @@
 Works like truncate(2) or ftruncate(2).
 
 
+=item aio_allocate $fh, $mode, $offset, $len, $callback->($status)
+
+Allocates or freed disk space according to the C<$mode> argument. See the
+linux C<fallocate> docuemntation for details.
+
+C<$mode> can currently be C<0> or C<IO::AIO::FALLOC_FL_KEEP_SIZE>
+to allocate space, or C<IO::AIO::FALLOC_FL_PUNCH_HOLE |
+IO::AIO::FALLOC_FL_KEEP_SIZE>, to deallocate a file range.
+
+The file system block size used by C<fallocate> is presumably the
+C<f_bsize> returned by C<statvfs>.
+
+If C<fallocate> isn't available or cannot be emulated (currently no
+emulation will be attempted), passes C<-1> and sets C<$!> to C<ENOSYS>.
+
+
 =item aio_chmod $fh_or_path, $mode, $callback->($status)
 
 Works like perl's C<chmod> function.
@@ -1908,7 +1927,8 @@
 =item IO::AIO::mmap $scalar, $length, $prot, $flags, $fh[, $offset]
 
 Memory-maps a file (or anonymous memory range) and attaches it to the
-given C<$scalar>, which will act like a string scalar.
+given C<$scalar>, which will act like a string scalar. Returns true on
+success, and false otherwise.
 
 The only operations allowed on the scalar are C<substr>/C<vec> that don't
 change the string length, and most read-only operations such as copying it
@@ -1977,6 +1997,9 @@
 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>.