diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2021-08-30 15:49:59 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-08-30 15:49:59 +0300 |
| commit | 6a217437f9f5482a3f6f2dc5fcd27cf0f62409ac (patch) | |
| tree | c82270181daeb43eb9984b586784b70f13ef1df4 /drivers/infiniband/hw/mlx4 | |
| parent | 65f90c8e38c9900692338864156e7824cf8a6501 (diff) | |
| parent | 79fbd3e1241cea83dded06db2b8bcd5893d877d7 (diff) | |
| download | linux-6a217437f9f5482a3f6f2dc5fcd27cf0f62409ac.tar.xz | |
Merge branch 'sg_nents' into rdma.git for-next
From Maor Gottlieb
====================
Fix the use of nents and orig_nents in the sg table append helpers. The
nents should be used by the DMA layer to store the number of DMA mapped
sges, the orig_nents is the number of CPU sges.
Since the sg append logic doesn't always create a SGL with exactly
orig_nents entries store a total_nents as well to allow the table to be
properly free'd and reorganize the freeing logic to share across all the
use cases.
====================
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
* 'sg_nents':
RDMA: Use the sg_table directly and remove the opencoded version from umem
lib/scatterlist: Fix wrong update of orig_nents
lib/scatterlist: Provide a dedicated function to support table append
Diffstat (limited to 'drivers/infiniband/hw/mlx4')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/doorbell.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mr.c | 4 |
2 files changed, 4 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx4/doorbell.c b/drivers/infiniband/hw/mlx4/doorbell.c index d41f03ccb0e1..9bbd695a9fd5 100644 --- a/drivers/infiniband/hw/mlx4/doorbell.c +++ b/drivers/infiniband/hw/mlx4/doorbell.c @@ -75,7 +75,8 @@ int mlx4_ib_db_map_user(struct ib_udata *udata, unsigned long virt, list_add(&page->list, &context->db_page_list); found: - db->dma = sg_dma_address(page->umem->sg_head.sgl) + (virt & ~PAGE_MASK); + db->dma = sg_dma_address(page->umem->sgt_append.sgt.sgl) + + (virt & ~PAGE_MASK); db->u.user_page = page; ++page->refcnt; diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c index 50becc0e4b62..04a67b481608 100644 --- a/drivers/infiniband/hw/mlx4/mr.c +++ b/drivers/infiniband/hw/mlx4/mr.c @@ -200,7 +200,7 @@ int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, mtt_shift = mtt->page_shift; mtt_size = 1ULL << mtt_shift; - for_each_sg(umem->sg_head.sgl, sg, umem->nmap, i) { + for_each_sgtable_dma_sg(&umem->sgt_append.sgt, sg, i) { if (cur_start_addr + len == sg_dma_address(sg)) { /* still the same block */ len += sg_dma_len(sg); @@ -273,7 +273,7 @@ int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, u64 start_va, *num_of_mtts = ib_umem_num_dma_blocks(umem, PAGE_SIZE); - for_each_sg(umem->sg_head.sgl, sg, umem->nmap, i) { + for_each_sgtable_dma_sg(&umem->sgt_append.sgt, sg, i) { /* * Initialization - save the first chunk start as the * current_block_start - block means contiguous pages. |