5 bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
6 const struct bio_vec *vec2)
8 unsigned long mfn1 = pfn_to_mfn(page_to_pfn(vec1->bv_page));
9 unsigned long mfn2 = pfn_to_mfn(page_to_pfn(vec2->bv_page));
11 return mfn1 + PFN_DOWN(vec1->bv_offset + vec1->bv_len) == mfn2;