Re: (subset) [PATCHSET v4 0/7] io_uring epoll wait support

[Jens Axboe <axboe@kernel.dk>]

On 2/20/25 2:21 AM, Christian Brauner wrote:
> On Wed, 19 Feb 2025 10:22:23 -0700, Jens Axboe wrote:
>> One issue people consistently run into when converting legacy epoll
>> event loops with io_uring is that parts of the event loop still needs to
>> use epoll. And since event loops generally need to wait in one spot,
>> they add the io_uring fd to the epoll set and continue to use
>> epoll_wait(2) to wait on events. This is suboptimal on the io_uring
>> front as there's now an active poller on the ring, and it's suboptimal
>> as it doesn't give the application the batch waiting (with fine grained
>> timeouts) that io_uring provides.
>>
>> [...]
> 
> Preparatory patches in vfs-6.15.eventpoll with tag vfs-6.15-rc1.eventpoll.
> Stable now.

Thanks, I'll rebase on your branch.

-- 
Jens Axboe