On Thu, Jul 22, 2021 at 3:54 AM Joao Martins [off-list ref] wrote:
[..]

quoted

The folio work really touches the page
cache for now, and this seems mostly to touch the devmap paths.

/me nods -- it really is about devmap infra for usage in device-dax for persistent memory.

Perhaps I should do s/pagemaps/devmap/ throughout the series to avoid confusion.

I also like "devmap" as a more accurate name. It matches the PFN_DEV
and PFN_MAP flags that decorate DAX capable pfn_t instances. It also
happens to match a recommendation I gave to Ira for his support for
supervisor protection keys with devmap pfns.