On Tue, 9 Oct 2018 17:32:16 -0700 John Hubbard <jhubb...@nvidia.com> wrote:
> > I'm not really understanding. Patch 3/3 changes just one infiniband > > driver to use put_user_page(). But the changelogs here imply (to me) > > that every user of get_user_pages() needs to be converted to > > s/put_page/put_user_page/. > > > > Methinks a bit more explanation is needed in these changelogs? > > > > OK, yes, it does sound like the explanation is falling short. I'll work on > something > clearer. Did the proposed steps in the changelogs, such as: > > [2] https://lkml.kernel.org/r/20180709080554.21931-1-jhubb...@nvidia.com > Proposed steps for fixing get_user_pages() + DMA problems. > > help at all, or is it just too many references, and I should write the words > directly in the changelog? > > Anyway, patch 3/3 is a just a working example (which we do want to submit, > though), and > many more conversions will follow. But they don't have to be done all > upfront--they > can be done in follow up patchsets. > > The put_user_page*() routines are, at this point, not going to significantly > change > behavior. > > I'm working on an RFC that will show what the long-term fix to get_user_pages > and > put_user_pages will look like. But meanwhile it's good to get started on > converting > all of the call sites. I see. Yes, please do put all of it into the changelog[s].
