[Nouveau] dev_pagemap related cleanups

[Christoph Hellwig]

On Fri, Jun 14, 2019 at 06:14:45PM -0700, Dan Williams wrote:
> On Thu, Jun 13, 2019 at 11:14 PM Christoph Hellwig <hch at lst.de> wrote:
> >
> > On Thu, Jun 13, 2019 at 11:27:39AM -0700, Dan Williams wrote:
> > > It also turns out the nvdimm unit tests crash with this signature on
> > > that branch where base v5.2-rc3 passes:
> >
> > How do you run that test?
> 
> This is the unit test suite that gets kicked off by running "make
> check" from the ndctl source repository. In this case it requires the
> nfit_test set of modules to create a fake nvdimm environment.
> 
> The setup instructions are in the README, but feel free to send me
> branches and I can kick off a test. One of these we'll get around to
> making it automated for patch submissions to the linux-nvdimm mailing
> list.

Oh, now I remember, and that was the bummer as anything requiring modules
just does not fit at all into my normal test flows that just inject
kernel images and use otherwise static images.