On Wed, Nov 21, 2018 at 09:45:25AM +0200, Nikolay Borisov wrote: > > + bio_for_each_segment_all() > > + bio_first_bvec_all() > > + bio_first_page_all() > > + bio_last_bvec_all() > > + > > +* The following helpers iterate over single-page bvecs. The passed 'struct > > +bio_vec' will contain a single-page IO vector during the iteration > > + > > + bio_for_each_segment() > > + bio_for_each_segment_all() > > + > > +* The following helpers iterate over single-page bvecs. The passed 'struct > > +bio_vec' will contain a single-page IO vector during the iteration > > + > > + bio_for_each_bvec() > > Just put this helper right below the above 2, no need to repeat the > explanation. Also I'd suggest introducing another catch-all sentence > "All other helpers are assumed to iterate multipage bio vecs" and > perhaps give an example with 1-2 helpers. Well, I think the second explanation is wrong - bio_for_each_bvec iterates over the whole bvecs, not just single page.
