linux-kernel - [PATCH 1/1] scsi: storvsc: Always use blk-mq

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Message-ID: <1545243282-10573-1-git-send-email-mikelley@microsoft.com>
Date:   Wed, 19 Dec 2018 18:40:49 +0000
From:   Michael Kelley <mikelley@...rosoft.com>
To:     KY Srinivasan <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        Long Li <longli@...rosoft.com>,
        "James.Bottomley@...senpartnership.com" 
        <James.Bottomley@...senpartnership.com>,
        "emilne@...hat.com" <emilne@...hat.com>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
CC:     Michael Kelley <mikelley@...rosoft.com>
Subject: [PATCH 1/1] scsi: storvsc: Always use blk-mq

With high IOPS storage being increasingly prevalent for guests
on Hyper-V and in Azure, make blk-mq the default so that the
full performance of the storage can be realized without having
to tweak other configuration settings.

Signed-off-by: Michael Kelley <mikelley@...rosoft.com>
---
 drivers/scsi/storvsc_drv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index f03dc03..3dbbd14 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1703,6 +1703,7 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
 	.dma_boundary =		PAGE_SIZE-1,
 	.no_write_same =	1,
 	.track_queue_depth =	1,
+	.force_blk_mq =		1,
 };
 
 enum {
-- 
1.8.3.1