[PATCH v4 8/8] nvme-rdma: Unfreeze queues on reconnect

Daniel Wagner
2021-08-02T11:30:26Z

During the queue teardown in nvme_rdma_teardown_io_queues() freeze is
called unconditionally. When we reconnect we need to pair the freeze
with an unfreeze to avoid hanging I/Os. For newly created connection
this is not needed.

Fixes: 9f98772ba307 ("nvme-rdma: fix controller reset hang during traffic")
Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
drivers/nvme/host/rdma.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index de2a8950d282..21a8a5353af0 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -901,6 +901,8 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl,
error = PTR_ERR(ctrl->ctrl.admin_q);
goto out_cleanup_fabrics_q;
}
+ } else {
+ nvme_unfreeze(&ctrl->ctrl);
}

error = nvme_rdma_start_queue(ctrl, 0);
--
2.29.2