On Tue, Jan 17, 2023 at 08:44:16AM +0000, David Howells wrote: > Also, I don't want it to be FOLL_WRITE or 0. I want it to be written > explicitly in both cases. If you're going to insist on using FOLL_WRITE, then > there should be a FOLL_READ to go with it, even if it's #defined to 0. Well, that's not how FOLL_* works. And another new flag that is defined to 0 but only used by some I/O callers is really confusing.