From: "Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>
Date: Wed, 24 Jan 2018 22:49:57 +0000
Patch-mainline: v4.16-rc3
Subject: scsi: storvsc: Increase cmd_per_lun for higher speed devices
Git-commit: cabe92a55e3a12005a4ac4d3954c9a174b0efe2a
References: fate#323887
Increase cmd_per_lun to allow more I/Os in progress per device,
particularly for NVMe's. The Hyper-V host side can handle the higher
count with no issues.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Olaf Hering <ohering@suse.de>
---
drivers/scsi/storvsc_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1656,7 +1656,7 @@ static struct scsi_host_template scsi_driver = {
.eh_timed_out = storvsc_eh_timed_out,
.slave_alloc = storvsc_device_alloc,
.slave_configure = storvsc_device_configure,
- .cmd_per_lun = 255,
+ .cmd_per_lun = 2048,
.this_id = -1,
.use_clustering = ENABLE_CLUSTERING,
/* Make sure we dont get a sg segment crosses a page boundary */