From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754581AbdGLV1U (ORCPT ); Wed, 12 Jul 2017 17:27:20 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:42692 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754085AbdGLV1S (ORCPT ); Wed, 12 Jul 2017 17:27:18 -0400 To: don.brace@microsemi.com Cc: Yadan Fan , martin.petersen@oracle.com, jejb@linux.vnet.ibm.com, esc.storagedev@microsemi.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/2] smartpqi: limit transfer length to 1MB From: "Martin K. Petersen" Organization: Oracle Corporation References: <20170623094006.16807-1-ydfan@suse.com> <20170623094006.16807-2-ydfan@suse.com> Date: Wed, 12 Jul 2017 17:27:08 -0400 In-Reply-To: <20170623094006.16807-2-ydfan@suse.com> (Yadan Fan's message of "Fri, 23 Jun 2017 17:40:06 +0800") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Don, > The smartpqi firmware will bypass the cache for any request larger > than 1MB, so we should cap the request size to avoid any > performance degradation in kernels later than v4.3 Ping on these... -- Martin K. Petersen Oracle Linux Engineering