On Thu, Jun 09, 2022 at 11:27:13PM +0800, kernel test robot wrote:
> >> mm/z3fold.c:1505:24: warning: variable 'new_mapping' set but not used [-Wunused-but-set-variable]
>            struct address_space *new_mapping;
>                                  ^
>    1 warning generated.

Thanks, fixed.