Re: [PATCH 1/3] mm, numa: rework do_pages_move

[Christopher Lameter]

On Fri, 5 Jan 2018, Michal Hocko wrote:

> > Also why are you migrating the pages on pagelist if a
> > add_page_for_migration() fails? One could simply update
> > the status in user space and continue.
>
> I am open to further cleanups. Care to send a full patch with the
> changelog? I would rather not fold more changes to the already tested
> one.

While doing that I saw that one could pull the rwsem locking out of
add_page_for_migration() as well in order to avoid taking it for each 4k
page. Include that?