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nvme-rdma: default MR page size to 4k 

Due to various page sizes in the system (IOMMU/device/kernel), we
set the fabrics controller page size to 4k and block layer boundaries
accordinglly. In architectures that uses different kernel page size
we'll have a mismatch to the MR page size that may cause a mapping error.
Update the MR page size to correspond to the core ctrl settings.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Max Gurtovoy 2017-08-28 12:52:27 +03:00 committed by Christoph Hellwig
parent e9d8a0fdea
commit b925a2dc16
1 changed files with 6 additions and 2 deletions
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8
drivers/nvme/host/rdma.c
View File

@ -920,7 +920,11 @@ static int nvme_rdma_map_sg_fr(struct nvme_rdma_queue *queue,
struct nvme_keyed_sgl_desc *sg = &c->common.dptr.ksgl;
int nr;
nr = ib_map_mr_sg(req->mr, req->sg_table.sgl, count, NULL, PAGE_SIZE);
/*
* Align the MR to a 4K page size to match the ctrl page size and
* the block virtual boundary.
*/
nr = ib_map_mr_sg(req->mr, req->sg_table.sgl, count, NULL, SZ_4K);
if (nr < count) {
if (nr < 0)
return nr;
@ -1583,7 +1587,7 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl)
goto out_cleanup_queue;
ctrl->ctrl.max_hw_sectors =
(ctrl->max_fr_pages - 1) << (PAGE_SHIFT - 9);
(ctrl->max_fr_pages - 1) << (ilog2(SZ_4K) - 9);
error = nvme_init_identify(&ctrl->ctrl);
if (error)