From mboxrd@z Thu Jan  1 00:00:00 1970
From: Benjamin Block <bblock@linux.vnet.ibm.com>
Subject: Re: [PATCH 21/29] drivers, s390: convert fc_fcp_pkt.ref_cnt from
 atomic_t to refcount_t
Date: Mon, 6 Mar 2017 17:54:44 +0100
Message-ID: <20170306165444.GC7420@bblock-ThinkPad-W530>
References: <1488810076-3754-1-git-send-email-elena.reshetova@intel.com>
 <1488810076-3754-22-git-send-email-elena.reshetova@intel.com>
 <536a58ba-8896-5639-cab9-bd2f13bed325@suse.de>
Mime-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Return-path: <driverdev-devel-bounces@linuxdriverproject.org>
Content-Disposition: inline
In-Reply-To: <536a58ba-8896-5639-cab9-bd2f13bed325@suse.de>
List-Unsubscribe: <http://driverdev.linuxdriverproject.org/mailman/options/driverdev-devel>,
 <mailto:driverdev-devel-request@linuxdriverproject.org?subject=unsubscribe>
List-Archive: <http://driverdev.linuxdriverproject.org/pipermail/driverdev-devel/>
List-Post: <mailto:driverdev-devel@linuxdriverproject.org>
List-Help: <mailto:driverdev-devel-request@linuxdriverproject.org?subject=help>
List-Subscribe: <http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel>,
 <mailto:driverdev-devel-request@linuxdriverproject.org?subject=subscribe>
Errors-To: driverdev-devel-bounces@linuxdriverproject.org
Sender: "devel" <driverdev-devel-bounces@linuxdriverproject.org>
To: Johannes Thumshirn <jthumshirn@suse.de>
Cc: peterz@infradead.org, linux-pci@vger.kernel.org, target-devel@vger.kernel.org, linux1394-devel@lists.sourceforge.net, Elena Reshetova <elena.reshetova@intel.com>, devel@driverdev.osuosl.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-serial@vger.kernel.org, fcoe-devel@open-fcoe.org, xen-devel@lists.xenproject.org, open-iscsi@googlegroups.com, linux-media@vger.kernel.org, Kees Cook <keescook@chromium.org>, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, Hans Liljestrand <ishkamiel@gmail.com>, David Windsor <dwindsor@gmail.com>, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, devel@linuxdriverproject.org
List-Id: linux-bcache@vger.kernel.org

On Mon, Mar 06, 2017 at 04:27:11PM +0100, Johannes Thumshirn wrote:
> On 03/06/2017 03:21 PM, Elena Reshetova wrote:
> > refcount_t type and corresponding API should be
> > used instead of atomic_t when the variable is used as
> > a reference counter. This allows to avoid accidental
> > refcounter overflows that might lead to use-after-free
> > situations.
> =

> The subject is wrong, should be something like "scsi: libfc convert
> fc_fcp_pkt.ref_cnt from atomic_t to refcount_t" but not s390.
> =


Yes please, I was extremely confused for a moment here.



                                                    Beste Gr=FC=DFe / Best =
regards,
                                                      - Benjamin Block
-- =

Linux on z Systems Development         /         IBM Systems & Technology G=
roup
		  IBM Deutschland Research & Development GmbH =

Vorsitz. AufsR.: Martina Koederitz     /        Gesch=E4ftsf=FChrung: Dirk =
Wittkopp
Sitz der Gesellschaft: B=F6blingen / Registergericht: AmtsG Stuttgart, HRB =
243294