Re: [Lsf-pc] [LSF/MM TOPIC] The end of the DAX experiment

From: Matthew Wilcox
Date: Thu Feb 14 2019 - 15:08:49 EST

On Thu, Feb 14, 2019 at 11:31:24AM -0800, Dan Williams wrote:
> On Thu, Feb 14, 2019 at 11:10 AM Jerome Glisse <jglisse@xxxxxxxxxx> wrote:
> > I am just again working on my struct page mapping patchset as well as
> > the generic page write protection that sits on top. I hope to be able
> > to post the v2 in couple weeks. You can always look at my posting last
> > year to see more details.
> Yes, I have that in mind as one of the contenders. However, it's not
> clear to me that its a suitable fit for filesystem-reflink. Others
> have floated the 'page proxy' idea, so it would be good to discuss the
> merits of the general approaches.

... and my preferred option of putting pfn entries in the page cache.
Or is that what you meant by "page proxy"?