Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > "unsigned int" assumes that the number of bytes isn't going to exceed 32 > bits. I tend to err on the side of safety here and use size_t. Not unreasonable. > > + pgpos = (folio_index(folio) - start_page) * PAGE_SIZE; > > + pgend = pgpos + folio_size(folio); > > What happens if start_page is somewhere inside folio? Seems to me > that pgend ends up overhanging into the next folio? Yeah, I think my maths is dodgy. I should probably use folio_pos() and/or offset_in_folio(). David
