On Thu, Dec 06 2018 at 8:58pm -0500, Mike Snitzer <snitzer@xxxxxxxxxx> wrote: > DM is forced to worry about all these details, as covered some in > the header for commit 396eaf21ee17c476e8f66249fb1f4a39003d0ab4, it is > trying to have its cake and eat it too. Gah, obviously meant: DM is _NOT_ trying to have its cake and eat it too. > It just wants IO scheduling to work for request-based DM devices.