On Tue, Jun 08, 2021 at 09:30:56AM -0700, Bart Van Assche wrote: > >From one of the functions called by kunmap_local(): > > unsigned long addr = (unsigned long) vaddr & PAGE_MASK; > > This won't work well if bvec->bv_offset >= PAGE_SIZE I assume?
It won't indeed. Both the existing and new helpers operate on single page bvecs only, and all callers only use those. I should have probably mentioned that in the cover letter and documented the assumptions in the code, though.
