On Sun, Sep 04, 2022 at 02:02:41PM +0000, Cheng Li wrote: > To handle discontiguity case, mem_map_next() has a parameter named > `offset`. As a function caller, one would be confused why "get > next entry" needs a parameter named "offset". The other drawback of > mem_map_next() is that the callers must take care of the map between > parameter "iter" and "offset", otherwise we may get an hole or > duplication during iteration. So we use mem_map_offset instead of > mem_map_next. I think we should go further and get rid of mem_map_offset(). nth_page() is now more efficient than mem_map_offset().