Re: [PATCH 1 of 13] Add apply_to_page_range() which applies a function to a pte range

[Chris Wright <chrisw@sous-sol.org>]

* Eric W. Biederman (ebiederm@xmission.com) wrote:
> - You don't handle huge pages.  For a generic function
>   that sounds like a problem.
> - I believe there is a reason the kernel doesn't already have
>   a function like this.  I seem to recall there being efficiency
>   and fast path arguments.
> - Placing this code in mm/memory.c without a common consumer is
>   pure kernel bloat for everyone who doesn't use this function,
>   which is just about everyone.

We got the opposite feedback the first time we posted this function.
Xen has some users, and I believe there's a couple in-tree functions we could
convert easily w/out overhead issues.  It's generic and this is just the
infrastructure, I think we should leave it.

thanks,
-chris