On Fri, Aug 27, 2021 at 06:49:25PM +0200, Andreas Gruenbacher wrote: > Introduce a new nofault flag to indicate to get_user_pages to use the > FOLL_NOFAULT flag. This will cause get_user_pages to fail when it > would otherwise fault in a page. > > Currently, the noio flag is only checked in iov_iter_get_pages and > iov_iter_get_pages_alloc. This is enough for iomaop_dio_rw, but it > may make sense to check in other contexts as well. I can live with that, but * direct assignments (as in the next patch) are fucking hard to grep for. Is it intended to be "we set it for duration of primitive", or...? * it would be nice to have a description of intended semantics for that thing. This "may make sense to check in other contexts" really needs to be elaborated (and agreed) upon. Details, please.
