Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > What about ITER_BVEC_MC ?? > > That probably would be the best option. Just make it a proper > ITER_xyz, instead of an odd sub-case for one ITER (but set up in such > a way that it looks like it might happen for other ITER_xyz cases). I'm not sure that buys us anything. It would then require every call to iov_iter_is_bvec()[*] to check for two values instead of one - including in iterate_and_advance() - and *still* we'd have to have the special-casing in _copy_from_iter() and copy_page_from_iter_atomic(). The issue is that ITER_xyz changes the iteration function - but we don't actually want to do that; rather, we need to change the step function. David [*] There's a bunch of them outside of iov_iter.c.
