swap_cache_read_folio
folio = swap_cache_read_folio(entry, gfp_mask, mpol, ilx, plug, false);
folio = swap_cache_read_folio(ra_entry, gfp_mask, mpol, ilx,
return swap_cache_read_folio(entry, gfp_mask, mpol, ilx, NULL, false);
folio = swap_cache_read_folio(entry, gfp_mask, mpol, ilx,
folio = swap_cache_read_folio(targ_entry, gfp_mask, mpol, targ_ilx,