+ set_pte_at(mm, addr, pte, pgoff_to_pte(pgoff));
+ /*
+ * We don't need to run update_mmu_cache() here because the "file pte"
+ * being installed by install_file_pte() is not a real pte - it's a
+ * non-present entry (like a swap entry), noting what file offset should
+ * be mapped there when there's a fault (in a non-linear vma where
+ * that's not obvious).
+ */
+ pte_unmap_unlock(pte, ptl);
+ err = 0;
+out: