quoted

+unlock_folio:
+     folio_unlock(folio);
+     folio_put(folio);
+     i++;

I'd add a counter and use it int the below for loop.

Done.

quoted

+put_folios:
+     /*
+      * Note: don't free the folios already added to the file. They will be
+      * freed when the file is freed. Free the ones not added yet here.
+      */
+     for (; i < nr_folios; i++) {
+             const struct memfd_luo_folio_ser *pfolio = &folios_ser[i];
+
+             folio = kho_restore_folio(pfolio->pfn);
+             if (folio)
+                     folio_put(folio);
+     }
+
+     return err;
+}

Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

Thanks!

Pasha

--
Sincerely yours,
Mike.