On Mon, 21 Mar 2022 11:00:59 +0200, Almog Khaikin wrote:
> Without a full memory barrier between the store to the flags and the
> load of the SQ tail the two operations can be reordered and this can
> lead to a situation where the SQPOLL thread goes to sleep while the
> application writes to the SQ tail and doesn't see the wakeup flag.
> This memory barrier pairs with a full memory barrier in the application
> between its store to the SQ tail and its load of the flags.
>
> [...]
Applied, thanks!
[1/1] io_uring: fix memory ordering when SQPOLL thread goes to sleep
commit: 649bb75d19c93f5459f450191953dff4825fda3e
Best regards,
--
Jens Axboe
