[Nouveau] [PATCH 16/25] device-dax: use the dev_pagemap internal refcount

[Christoph Hellwig]

On Fri, Jun 28, 2019 at 11:44:35AM -0700, Dan Williams wrote:
> There is a problem with the series in CH's tree. It removes the
> ->page_free() callback from the release_pages() path because it goes
> too far and removes the put_devmap_managed_page() call.

release_pages only called put_devmap_managed_page for device public
pages.  So I can't see how that is in any way a problem.