Re: [GIT PULL] iov_iter: Improve page extraction (pin or just list)

[David Howells]

John Hubbard <jhubbard@xxxxxxxxxx> wrote:

> This is something that we say when adding pin_user_pages_fast(),
> yes. I doubt that I can quickly find the email thread, but we
> measured it and weren't immediately able to come up with a way
> to make it faster.

percpu counters maybe - add them up at the point of viewing?

David