On Mon, Jan 30, 2023 at 11:24:15AM +0000, David Howells wrote: > Seems to be something people want to do quite a lot and don't know about. Hmm. Right now there is one case where it would be used, and there's about three that are and should be using bio_add_page. > I've seen places where someone allocates a buffer and clears it just to use as > a source of zeros. There's at least one place in cifs, for example. I know > about it from wrangling arch code, but most people working on Linux haven't > done that. But we don't really need a helper for every possible page use for that. People just need to learn about ZERO_PAGE.
