io_destroy() removes the asynchronous I/O context from the list of I/O contexts and then destroys it. io_destroy() can also cancel any outstanding asynchronous I/O actions on ctx and block on completion.
io_destroy() returns 0 on success.
io_destroy() is Linux specific and should not be used in programs that are intended to be portable.
The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.
io_setup(2), io_submit(2), io_getevents(2), io_cancel(2).
The asynchronous I/O system calls were written by Benjamin LaHaise.