On 12/9/21 8:29 PM, Hao Xu wrote: > > 在 2021/12/10 上午12:16, Jens Axboe 写道: >> If we successfully cancel a work item but that work item needs to be >> processed through task_work, then we can be sleeping uninterruptibly >> in io_uring_cancel_generic() and never process it. Hence we don't >> make forward progress and we end up with an uninterruptible sleep >> warning. >> >> Add the waitqueue earlier to ensure that any wakeups from cancelations >> are seen, and switch to using uninterruptible sleep so that postponed > ^ typo Not really a typo, but should be killed from v2 for sure. I'll do that. -- Jens Axboe
