Description:
------------
When running eio_mkdir code example, the directory is created but the eio_mkdir 
function hangs and blocks the process.

I'm using an SSD.

Note : I'm encountering this issue when running test suite of react libeio 
implementation, see 
https://github.com/romainneutron/react/blob/filesystem/src/React/Filesystem/Libeio
Filesystem.php

Some tests on eio_open eio_read produce some "bus error" segmentation fault.



Test script:
---------------
<?php
$temp_dirname = "eio-temp-dir";

/* Is called when eio_mkdir() finishes */
function my_mkdir_callback($data, $result) {
 if ($result == 0 && is_dir($temp_dirname)
   && !is_readable($temp_dirname)
   && is_writable($temp_dirname)) {
  echo "eio_mkdir_ok";
 }

 // Remove directory
    if (file_exists($data))
        rmdir($temp_dirname);
}

// Create directory with access mode 0300
eio_mkdir($temp_dirname, 0300, EIO_PRI_DEFAULT, "my_mkdir_callback", $temp_dirname);
eio_event_loop();