From: Stephen Bates <[email protected]> We should not be using the CMB to determine the permissable q_depth when we don't plan to place any queues in the CMB. In the case of a small CMB or large numbers of queues this could lead to shallow queues when they don't need to be.
Signed-off-by: Stephen Bates <[email protected]> --- drivers/nvme/host/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 0bc6a9e..0d099e9 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -1913,7 +1913,7 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) if (nr_io_queues == 0) return 0; - if (dev->cmb && (dev->cmbsz & NVME_CMBSZ_SQS)) { + if (dev->cmb && use_cmb_sqes && (dev->cmbsz & NVME_CMBSZ_SQS)) { result = nvme_cmb_qdepth(dev, nr_io_queues, sizeof(struct nvme_command)); if (result > 0) -- 2.7.4
