On Fri, Mar 08, 2019 at 10:08:47AM -0800, Bart Van Assche wrote: > On Fri, 2019-03-08 at 10:40 -0700, Keith Busch wrote: > > A driver may need to iterate a particular queue's tagged request rather > > than the whole tagset. > > Since iterating over requests triggers race conditions with request execution > please explain what use case(s) you have in mind and what your plan is to handle > such race conditions. That race isn't new. You should only iterate when your queues are quieced to ensure the request sent to a callback is stable.