[PATCH v3 3/6] nvme-rdma: Update number of hardware queues before using them
From: Daniel Wagner <hidden>
Date: 2021-07-20 12:44:27
Also in:
lkml
Subsystem:
nvm express driver, the rest · Maintainers:
Keith Busch, Jens Axboe, Christoph Hellwig, Sagi Grimberg, Linus Torvalds
When the number of hardware queues changes during resetting we should update the tagset first before using it. Signed-off-by: Daniel Wagner <redacted> --- drivers/nvme/host/rdma.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 00fcbd985102..57d20100be56 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c@@ -966,6 +966,7 @@ static void nvme_rdma_destroy_io_queues(struct nvme_rdma_ctrl *ctrl, static int nvme_rdma_configure_io_queues(struct nvme_rdma_ctrl *ctrl, bool new) { int ret; + u32 prior_q_cnt = ctrl->ctrl.queue_count; ret = nvme_rdma_alloc_io_queues(ctrl); if (ret)
@@ -983,13 +984,7 @@ static int nvme_rdma_configure_io_queues(struct nvme_rdma_ctrl *ctrl, bool new) ret = PTR_ERR(ctrl->ctrl.connect_q); goto out_free_tag_set; } - } - - ret = nvme_rdma_start_io_queues(ctrl); - if (ret) - goto out_cleanup_connect_q; - - if (!new) { + } else if (prior_q_cnt != ctrl->ctrl.queue_count) { nvme_start_queues(&ctrl->ctrl); if (!nvme_wait_freeze_timeout(&ctrl->ctrl, NVME_IO_TIMEOUT)) { /*
@@ -1005,6 +1000,10 @@ static int nvme_rdma_configure_io_queues(struct nvme_rdma_ctrl *ctrl, bool new) nvme_unfreeze(&ctrl->ctrl); } + ret = nvme_rdma_start_io_queues(ctrl); + if (ret) + goto out_cleanup_connect_q; + return 0; out_wait_freeze_timed_out:
--
2.29.2
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