On Thu, 24 Jan 2019 at 10:24, Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, Jan 24, 2019 at 09:50:35AM +0100, Ard Biesheuvel wrote: > > > > Thanks for yet another round of cleanup > > > > I'll look into these, but I'd like to clarify one thing first. > > > > IIUC, you are trying to deal with the case where a single scatterlist > > element describes a range that strides two pages, and I wonder if that > > is a valid use of scatterlists in the first place. > > > > Herbert? > > Yes it is valid. IIRC the network stack may generate such a > scatterlist. > OK, so how many adjacent physical pages is a scatterlist entry permitted to cover? Unbounded?
