函数逻辑报告

函数名称：sys_io_cancel:* Attempts to cancel an iocb previously passed to io_submit. If* the operation is successfully cancelled, the resulting event is* copied into the memory pointed to by result without being placed* into the completion queue and 0 is returned

函数原型：SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb, struct io_event __user *, result)

返回类型：

参数：无