- __bio_for_each_segment(bvec, e->private_bio, i, 0) {
- void *d = kmap(bvec->bv_page);
- memcpy(tl, d + bvec->bv_offset, bvec->bv_len);
- kunmap(bvec->bv_page);
- tl=(unsigned short*)((char*)tl + bvec->bv_len);
+ len = e->size;
+ page = e->pages;
+ page_chain_for_each(page) {
+ void *d = kmap_atomic(page, KM_USER0);
+ unsigned l = min_t(unsigned, len, PAGE_SIZE);
+ memcpy(tl, d, l);
+ kunmap_atomic(d, KM_USER0);
+ tl = (unsigned short*)((char*)tl + l);
+ len -= l;