Re: [PATCH v7 2/8] iov_iter: Add a function to extract a page list from an iterator

[David Howells]

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