David Hildenbrand <david@xxxxxxxxxx> wrote: > Switching from FOLL_GET to FOLL_PIN was in the works by John H. Not sure what > the status is. Interestingly, Documentation/core-api/pin_user_pages.rst > already documents that "CASE 1: Direct IO (DIO)" uses FOLL_PIN ... which does, > unfortunately, no reflect reality yet. Yeah - I just came across that. Should iov_iter.c then switch entirely to using pin_user_pages(), rather than get_user_pages()? In which case my patches only need keep track of pinned/not-pinned and never "got". David