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Date:   Thu, 8 Aug 2019 09:52:49 +0200
From:   Cornelia Huck <cohuck@redhat.com>
To:     Chuhong Yuan <hslester96@gmail.com>
Cc:     Christian Borntraeger <borntraeger@de.ibm.com>,
        Janosch Frank <frankja@linux.ibm.com>,
        David Hildenbrand <david@redhat.com>,
        Heiko Carstens <heiko.carstens@de.ibm.com>,
        Vasily Gorbik <gor@linux.ibm.com>, linux-s390@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] s390/mm: Use refcount_t for refcount
Message-ID: <20190808095249.4fc40eb1.cohuck@redhat.com>
In-Reply-To: <20190808071826.6649-1-hslester96@gmail.com>
References: <20190808071826.6649-1-hslester96@gmail.com>
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On Thu,  8 Aug 2019 15:18:26 +0800
Chuhong Yuan <hslester96@gmail.com> 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@gmail.com>
> ---
>  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@redhat.com>