On Wed, May 25, 2022 at 11:58:51AM -0500, Eddie James wrote:

>  I have one concern still, that if the kernel is very busy, it may
>  schedule other work for the entire timeout period between assigning
>  "end" and checking if timed out in the do/while loop... Is it worth
>  worrying about this case?

I'm not sure we can entirely avoid there being a gap, but with it being
a busy loop you'd have to be very unlucky to hit that case.  If you come
up with a fix that'd be nice.