On Tue, Nov 19, 2024 at 04:48:15PM +0000, John Garry wrote: > I tried to check what is meant by "already started", but that comment > pre-dates git. And even the code from then does not make it obvious, but I > don't want to check further, so: Back in the bad old days there was a separare prep_fn callback into the driver to prepare a request while it was still on the scheduler lists, and that then set a started flag. In other words the comment is long obsolete.