dev_pagemap related cleanups v4

[Weiny, Ira]

> 
> On Mon, Jul 01, 2019 at 10:25:17AM +0200, Christoph Hellwig wrote:
> > And I've demonstrated that I can't send patch series..  While this has
> > all the right patches, it also has the extra patches already in the
> > hmm tree, and four extra patches I wanted to send once this series is
> > merged.  I'll give up for now, please use the git url for anything
> > serious, as it contains the right thing.
> 
> Okay, I sorted it all out and temporarily put it here:
> 
> https://github.com/jgunthorpe/linux/commits/hmm
> 
> Bit involved job:
> - Took Ira's v4 patch into hmm.git and confirmed it matches what
>   Andrew has in linux-next after all the fixups

Looking at the final branch seems good.

Ira

> - Checked your github v4 and the v3 that hit the mailing list were
>   substantially similar (I never did get a clean v4) and largely
>   went with the github version
> - Based CH's v4 series on -rc7 and put back the removal hunk in swap.c
>   so it compiles
> - Merge'd CH's series to hmm.git and fixed all the conflicts with Ira
>   and Ralph's patches (such that swap.c remains unchanged)
> - Added Dan's ack's and tested-by's
> 
> I think this fairly closely follows what was posted to the mailing list.
> 
> As it was more than a simple 'git am', I'll let it sit on github until I hear OK's
> then I'll move it to kernel.org's hmm.git and it will hit linux-next. 0-day
> should also run on this whole thing from my github.
> 
> What I know is outstanding:
>  - The conflicting ARM patches, I understand Andrew will handle these
>    post-linux-next
>  - The conflict with AMD GPU in -next, I am waiting to hear from AMD
> 
> Otherwise I think we are done with hmm.git for this cycle.
> 
> Unfortunately this is still not enough to progress rdma's ODP, so we will need
> to do this again next cycle :( I'll be working on patches once I get all the
> merge window prep I have to do done.
> 
> Regards,
> Jason