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authorSagi Grimberg <sagi@grimberg.me>2017-07-02 15:39:34 +0300
committerSagi Grimberg <sagi@grimberg.me>2017-07-06 09:48:31 +0300
commitf9c5af5f8ff14a31468546b9b1a876d537019e9a (patch)
tree389723e214b9857ea6256fecde091a4da6242963 /drivers/nvme
parentfb051339727cd8134dd6ef0305a120e6e265dded (diff)
downloadlinux-f9c5af5f8ff14a31468546b9b1a876d537019e9a.tar.bz2
nvme-fc: quiesce/unquiesce admin_q instead of start/stop its hw queues
unlike blk_mq_stop_hw_queues and blk_mq_start_stopped_hw_queues quiescing/unquiescing respects the submission path rcu grace. Also, make sure to unquiesce before cleanup the admin queue. Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-By: James Smart <james.smart@broadcom.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/fc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 50cc3b2b0e11..8d55e7827932 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -1703,6 +1703,7 @@ nvme_fc_ctrl_free(struct kref *ref)
list_del(&ctrl->ctrl_list);
spin_unlock_irqrestore(&ctrl->rport->lock, flags);
+ blk_mq_unquiesce_queue(ctrl->ctrl.admin_q);
blk_cleanup_queue(ctrl->ctrl.admin_q);
blk_mq_free_tag_set(&ctrl->admin_tag_set);
@@ -2321,7 +2322,7 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
goto out_delete_hw_queue;
if (ctrl->ctrl.state != NVME_CTRL_NEW)
- blk_mq_start_stopped_hw_queues(ctrl->ctrl.admin_q, true);
+ blk_mq_unquiesce_queue(ctrl->ctrl.admin_q);
ret = nvmf_connect_admin_queue(&ctrl->ctrl);
if (ret)
@@ -2475,7 +2476,7 @@ nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl)
* use blk_mq_tagset_busy_itr() and the transport routine to
* terminate the exchanges.
*/
- blk_mq_stop_hw_queues(ctrl->ctrl.admin_q);
+ blk_mq_quiesce_queue(ctrl->ctrl.admin_q);
blk_mq_tagset_busy_iter(&ctrl->admin_tag_set,
nvme_fc_terminate_exchange, &ctrl->ctrl);