Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933214AbcLIKyr (ORCPT ); Fri, 9 Dec 2016 05:54:47 -0500 Received: from mx1.redhat.com ([209.132.183.28]:50122 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932979AbcLIKyq (ORCPT ); Fri, 9 Dec 2016 05:54:46 -0500 Subject: Re: [PATCH V4 05/11] megaraid_sas: SAS3.5 Generic Megaraid Controllers Fast Path for RAID 1/10 Writes To: Sasikumar Chandrasekaran , jejb@kernel.org, hch@infradead.org References: <1481065220-18431-1-git-send-email-sasikumar.pc@broadcom.com> <1481065220-18431-6-git-send-email-sasikumar.pc@broadcom.com> Cc: linux-scsi@vger.kernel.org, Sathya.Prakash@broadcom.com, linux-kernel@vger.kernel.org, christopher.owens@broadcom.com, kiran-kumar.kasturi@broadcom.com From: Tomas Henzl Message-ID: Date: Fri, 9 Dec 2016 11:54:43 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <1481065220-18431-6-git-send-email-sasikumar.pc@broadcom.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Fri, 09 Dec 2016 10:54:45 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 627 Lines: 14 On 7.12.2016 00:00, Sasikumar Chandrasekaran wrote: > To improve RAID 1/10 Write performance, OS drivers need to issue the required Write > IOs as Fast Path IOs (after the appropriate checks allowing Fast Path to be used) > to the appropriate physical drives (translated from the OS logical IO) and wait for > all Write IOs to complete. If any of the Write IOs fail or time out, the IO will be > re issued to FW as an LD IO so FW can perform the error handling. > > This patch is depending on patch 4 > > Signed-off-by: Sasikumar Chandrasekaran Reviewed-by: Tomas Henzl Tomas