On Sun, Feb 27, 2022 at 01:34:31AM -0800, jhubbard.send.patches@xxxxxxxxx wrote: > From: John Hubbard <jhubbard@xxxxxxxxxx> > > Upcoming changes to Direct IO will change it from acquiring pages via > get_user_pages_fast(), to calling pin_user_pages_fast() instead. > > Place a few assertions at key points, that the pages are IOVEC (user > pages), to enforce the assumptions that there are no kernel or pipe or > other odd variations being passed. Umm... And what should happen when O_DIRECT file gets passed to splice()?
