From 763a18cbf79b0395ae09e63dc4d77335e4f88368 Mon Sep 17 00:00:00 2001
From: Dick Kennedy <dick.kennedy@broadcom.com>
Date: Mon, 23 Mar 2020 09:19:35 -0700
Subject: [PATCH] scsi: lpfc: Change default SCSI LUN QD to 64

References: bsc#1164777 bsc#1164780 bsc#1165211 jsc#SLE-8654
Patch-mainline: v5.7-rc1
Git-commit: 763a18cbf79b0395ae09e63dc4d77335e4f88368

The default lun queue depth by the driver has been 30 for many years.
However, this value, when used with more recent hardware, has actually
throttled some tests that concentrate io on a lun.

Increase the default lun queue depth to 64.

Queue full handling, reported by the target, remains in effect and
unchanged.

Link: https://lore.kernel.org/r/20200323161935.40341-1-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/scsi/lpfc/lpfc_attr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 3260e76e55b9..fae1c93353ac 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -3805,9 +3805,9 @@ LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
 
 /*
 # lun_queue_depth:  This parameter is used to limit the number of outstanding
-# commands per FCP LUN. Value range is [1,512]. Default value is 30.
+# commands per FCP LUN.
 */
-LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
+LPFC_VPORT_ATTR_R(lun_queue_depth, 64, 1, 512,
 		  "Max number of FCP commands we can queue to a specific LUN");
 
 /*
-- 
2.23.0