From: Israel Rukshin <israelr@mellanox.com>
Date: Wed, 18 Oct 2017 12:38:25 +0000
Subject: nvme-fc: Add BLK_MQ_F_NO_SCHED flag to admin tag set
Patch-mainline: v4.15-rc1
Git-commit: 5a22e2bf44fb311e5a6bfec6ed5680199d6e162a
References: FATE#323952, FATE#322506

Since commit b86dd81
"block: get rid of blk-mq default scheduler choice Kconfig entries",
when setting nr_hw_queues to 1 the admin tag set uses mq-deadline scheduler.
This flag is useful for admin queues that aren't used for normal IO.

Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: James Smart  <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 drivers/nvme/host/fc.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2803,6 +2803,7 @@ nvme_fc_init_ctrl(struct device *dev, st
 	ctrl->admin_tag_set.driver_data = ctrl;
 	ctrl->admin_tag_set.nr_hw_queues = 1;
 	ctrl->admin_tag_set.timeout = ADMIN_TIMEOUT;
+	ctrl->admin_tag_set.flags = BLK_MQ_F_NO_SCHED;
 
 	ret = blk_mq_alloc_tag_set(&ctrl->admin_tag_set);
 	if (ret)