"DESCRIPTION"
io_cancel attempts to cancel an asynchronous I/O operation previously submitted with the io_submit system call. ctx_id is the AIO context ID of the operation to be cancelled. If the AIO context is found, the event will be cancelled and then copied into the memory pointed to by result without being placed into the completion queue.
"RETURN VALUE"
io_cancel returns 0 on success; otherwise, it returns one of the errors listed in the "Errors" section.
"ERRORS"
