Re: [PATCH 1/2] mm: introduce put_user_page*(), placeholder versions

[Christoph Hellwig]

On Sat, Dec 08, 2018 at 11:33:53AM -0500, Jerome Glisse wrote:
> Patchset to use HMM inside nouveau have already been posted, some
> of the bits have already made upstream and more are line up for
> next merge window.

Even with that it is a relative fringe feature compared to making
something like get_user_pages() that is literally used every to actually
work properly.

So I think we need to kick out HMM here and just find another place for
it to store data.

And just to make clear that I'm not picking just on this - the same is
true to a just a little smaller extent for the pgmap..