Re: [PATCH 2/2] s390/mm: Use refcount_t for refcount

[Cornelia Huck]

On Thu,  8 Aug 2019 15:18:26 +0800
Chuhong Yuan <hslester96@xxxxxxxxx> wrote:

> Reference counters are preferred to use refcount_t instead of
> atomic_t.
> This is because the implementation of refcount_t can prevent
> overflows and detect possible use-after-free.
> So convert atomic_t ref counters to refcount_t.
> 
> Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
> ---
>  arch/s390/include/asm/gmap.h |  4 +++-
>  arch/s390/mm/gmap.c          | 10 +++++-----
>  2 files changed, 8 insertions(+), 6 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>