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"?