Re: [PATCH] iouring: Fix min_timeout behaviour

[Jens Axboe]

On 6/6/26 2:11 PM, Christian A. Ehrhardt wrote:
> The wakeup condition if a min timeout is present and has
> expired is that at least _one_ CQE was posted. Thus set
> the cq_tail target to ->cq_min_tail + 1. Without this
> commit a spurious wakeup can result in a premature wakeup
> because io_should_wake() will return true even if _no_ CQE
> was posted at all.
> 
> Tested by running the liburing testsuite with no regressions.
> 
> Additionally, tested by turning all calls to schedule() in
> io_uring/wait.c into calls to schedule_timeout(1) to force
> the spurious wakeups. With these spurious wakeups the
> min-timeout.t test fails before and passes after this commit.

Either this or the test case is broken, with or without the change
you sent for the test case. I'll take a look, but it's definitely
not passing as-is.

-- 
Jens Axboe