-
- /* copy a whole page or whatever's left */
- copy = min_t(ssize_t, remaining, PAGE_SIZE);
-
- /* ...but limit it to whatever space is left in the iov */
- copy = min_t(ssize_t, copy, iov_iter_count(&ii));
-
- /* go while there's data to be copied and no errors */
- if (copy && !rc) {
- pdata = kmap(page);
- rc = memcpy_toiovecend(ii.iov, pdata, ii.iov_offset,
- (int)copy);
- kunmap(page);
- if (!rc) {
- *copied += copy;
- remaining -= copy;
- iov_iter_advance(&ii, copy);
- }
- }
+ size_t copy = min_t(size_t, remaining, PAGE_SIZE);
+ size_t written = copy_page_to_iter(page, 0, copy, iter);
+ remaining -= written;
+ if (written < copy && iov_iter_count(iter) > 0)
+ break;