diff options
| author | Logan Gunthorpe <logang@deltatee.com> | 2018-10-04 15:27:44 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-10-17 12:18:21 -0500 |
| commit | e0596ab2900dfa64c0538e4aef8eec3c6f0f38eb (patch) | |
| tree | 06400983b4d86dc3dc9195b1808e9ea273d6906f /drivers/nvme/host/core.c | |
| parent | 0f238ff5cc92554fe8ddc6c3776386f31a4d38fa (diff) | |
| download | linux-e0596ab2900dfa64c0538e4aef8eec3c6f0f38eb.tar.bz2 | |
nvme-pci: Add support for P2P memory in requests
For P2P requests, we must use the pci_p2pmem_map_sg() function instead of
the dma_map_sg functions.
With that, we can then indicate PCI_P2P support in the request queue. For
this, we create an NVME_F_PCI_P2P flag which tells the core to set
QUEUE_FLAG_PCI_P2P in the request queue.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'drivers/nvme/host/core.c')
| -rw-r--r-- | drivers/nvme/host/core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index dd8ec1dd9219..6033ce2fd3e9 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3051,7 +3051,11 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid) ns->queue = blk_mq_init_queue(ctrl->tagset); if (IS_ERR(ns->queue)) goto out_free_ns; + blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue); + if (ctrl->ops->flags & NVME_F_PCI_P2PDMA) + blk_queue_flag_set(QUEUE_FLAG_PCI_P2PDMA, ns->queue); + ns->queue->queuedata = ns; ns->ctrl = ctrl; |