From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch Date: Wed, 10 Oct 2018 21:58:25 -0400 Message-ID: References: <1537801594-207139-1-git-send-email-john.garry@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1537801594-207139-1-git-send-email-john.garry@huawei.com> (John Garry's message of "Mon, 24 Sep 2018 23:06:27 +0800") Sender: linux-kernel-owner@vger.kernel.org To: John Garry Cc: jejb@linux.vnet.ibm.com, martin.petersen@oracle.com, linuxarm@huawei.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-scsi@vger.kernel.org John, > However it does block us in future from enabling SCSI MQ in the driver. We're going to remove the legacy I/O path so I'm not particularly keen on merging something that's going in the opposite direction. > This is because the IPTT index must be a unique value per HBA. However, > if we switched to SCSI MQ, the block layer tag becomes unique per queue, > and not per HBA. That doesn't sound right. -- Martin K. Petersen Oracle Linux Engineering