On Fri, Jun 15, 2018 at 2:08 PM Wei Wang <wei.w.wang@xxxxxxxxx> wrote: > > This patch adds a function to get free pages blocks from a free page > list. The obtained free page blocks are hints about free pages, because > there is no guarantee that they are still on the free page list after > the function returns. Ack. This is the kind of simple interface where I don't need to worry about the MM code calling out to random drivers or subsystems. I think that "order" should be checked for validity, but from a MM standpoint I think this is fine. Linus