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Bottomley" , "Martin K. Petersen" , Kees Cook , Hannes Reinecke , Souptick Joarder , Wen Xiong , Sinan Kaya , Bart Van Assche , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] scsi: ipr: fix build on 32-bit architectures From: "Martin K. Petersen" Organization: Oracle Corporation References: <20180608144617.2900894-1-arnd@arndb.de> Date: Wed, 13 Jun 2018 13:14:36 -0400 In-Reply-To: <20180608144617.2900894-1-arnd@arndb.de> (Arnd Bergmann's message of "Fri, 8 Jun 2018 16:46:00 +0200") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8923 signatures=668702 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=254 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1805220000 definitions=main-1806130184 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Arnd, > the conclusion was that drivers should generally assume that the > barrier implied by writel() is sufficient for ordering DMA, so this > reverts his change and instead removes the extraneous wmb() before it, > which is no longer needed on any architecture now. Applied to 4.18/scsi-fixes and squashed with Sinan's patch. -- Martin K. Petersen Oracle Linux Engineering