On Tue, Jan 02, 2024 at 10:03:58AM +0000, David Howells wrote: > Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > > > On Tue, Jan 02, 2024 at 08:56:46AM +0000, David Howells wrote: > > > Hi Christoph, Willy, > > > > > > Will bv_page in struct bio_vec ever become a folio pointer rather than I page > > > pointer? I'm guessing not as it still presumably needs to be able to point to > > > non-folio pages. > > > > My plan for bio_vec is that it becomes phyr -- a physical address + > > length. No more page or folio reference. > > Interesting... What does that mean for those places that currently use > bv_page as a place to stash a pointer to the page and use it to clean up the > page later? I don't intend to get rid of bio_for_each_folio_all() or bio_add_page() for example. It's just a phys_to_page() away. The advantage is that we wouldn't need a struct page to do I/O to a physical address.
