Re: [PATCH] io_uring: Don't require reinitable percpu_ref
From: Jens Axboe
Date: Fri Jul 15 2022 - 14:22:46 EST
On 7/15/22 11:45 AM, Michal Koutn? wrote:
> The commit 8bb649ee1da3 ("io_uring: remove ring quiesce for
> io_uring_register") removed the worklow relying on reinit/resurrection
> of the percpu_ref, hence, initialization with that requested is a relic.
> This is based on code review, this causes no real bug (and theoretically
> can't). Technically it's a revert of commit 214828962dea ("io_uring:
> initialize percpu refcounters using PERCU_REF_ALLOW_REINIT") but since
> the flag omission is now justified, I'm not making this a revert.
Thanks, applied manually for 5.20 (new file location).