On Tue, Feb 16, 2021 at 09:29:31AM +0000, David Howells wrote:

Is there a better way to do it?  The intent is to process the assessment phase
in the calling thread's context if possible rather than bumping over to a
worker thread.  For synchronous I/O, for example, that's done in the caller's
thread.  Maybe that's the answer - if it's known to be asynchronous, I have to
punt, but otherwise don't have to.

Yes, i think you want an explicit flag instead.