On Tue, Nov 24, 2020 at 05:58:13PM +0000, Pavel Begunkov wrote: > __bio_for_each_bvec(), __bio_for_each_segment() and bio_copy_data_iter() > fall under conditions of bvec_iter_advance_single(), which is a faster > and slimmer version of bvec_iter_advance(). Add > bio_advance_iter_single() and convert them. Are you sure about bio_advance_iter()? That API looks like it might not always be limited to a single segment, and might at least need a WARN_ON_ONCE to make sure it is not abused.
