On Tuesday 20 June 2006 7:40 pm, Linus Torvalds wrote: > > It's not up to the driver to worry about request queues. Maybe for block drivers. But USB and network controller drivers are fundamentally about managing request queues, by collaborating with upper level drivers. Alternatively, you may be observing that just like block queues are managed by the upper layer code, so are USB queues managed by the usb_driver entities that freeze their own contributions, like network interfaces manage their network queues. (Though in both cases the controller drivers must still wait for queues to empty before they are fully quiesced). - Dave
