From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:54284 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731635AbfHHHwx (ORCPT ); Thu, 8 Aug 2019 03:52:53 -0400 Date: Thu, 8 Aug 2019 09:52:49 +0200 From: Cornelia Huck 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> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-s390-owner@vger.kernel.org List-ID: To: Chuhong Yuan Cc: Christian Borntraeger , Janosch Frank , David Hildenbrand , Heiko Carstens , Vasily Gorbik , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org On Thu, 8 Aug 2019 15:18:26 +0800 Chuhong Yuan 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 > --- > arch/s390/include/asm/gmap.h | 4 +++- > arch/s390/mm/gmap.c | 10 +++++----- > 2 files changed, 8 insertions(+), 6 deletions(-) Reviewed-by: Cornelia Huck