nvme-fc: Add BLK_MQ_F_NO_SCHED flag to admin tag set

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>

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 372a068..0d0e898 100644 (file)
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2853,6 +2853,7 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
        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)