Re: [PATCH 2/2] io_uring: use TWA_SIGNAL for task_work if the task isn't running

On 8/11/20 8:05 AM, Oleg Nesterov wrote:

On 08/11, Jens Axboe wrote:

...

I'd really like to get this done at the same time as the io_uring change. Are you open to doing the READ_ONCE() based JOBCTL_TASK_WORK addition for 5.9?

Yes, the patch looks fine to me. In fact I was going to add this optimization from the very beginning, but then decided to make that patch as simple as possible.

OK great, I'll send that out separately.

And in any case I personally like this change much more than 1/2 + 2/2 which I honestly don't understand ;)

Yes, in retrospect, me too :-)