diff options
| author |   Christoph Hellwig <hch@lst.de> | 2019-11-13 08:32:13 +0100 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2019-11-14 12:01:54 -0400 |
| commit | 7283fff8b524b2f27438429aca458b232f5c5c8a (patch) | |
| tree | ff5f32d6c4ed5968d8c7df5a2d8707d579d43baf /drivers/infiniband/core/umem.c | |
| parent | RDMA/efa: Clear the admin command buffer prior to its submission (diff) | |
| download | linux-dev-7283fff8b524b2f27438429aca458b232f5c5c8a.tar.xz linux-dev-7283fff8b524b2f27438429aca458b232f5c5c8a.zip | |
dma-mapping: remove the DMA_ATTR_WRITE_BARRIER flag
This flag is not implemented by any backend and only set by the ib_umem
module in a single instance.
Link: https://lore.kernel.org/r/20191113073214.9514-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/umem.c')
| -rw-r--r-- | drivers/infiniband/core/umem.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c index 24244a2f68cc..66148739b00f 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -199,7 +199,6 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr, struct mm_struct *mm; unsigned long npages; int ret; - unsigned long dma_attrs = 0; struct scatterlist *sg; unsigned int gup_flags = FOLL_WRITE; @@ -211,9 +210,6 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr, if (!context) return ERR_PTR(-EIO); - if (dmasync) - dma_attrs |= DMA_ATTR_WRITE_BARRIER; - /* * If the combination of the addr and size requested for this memory * region causes an integer overflow, return error. @@ -294,11 +290,10 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr, sg_mark_end(sg); - umem->nmap = ib_dma_map_sg_attrs(context->device, + umem->nmap = ib_dma_map_sg(context->device, umem->sg_head.sgl, umem->sg_nents, - DMA_BIDIRECTIONAL, - dma_attrs); + DMA_BIDIRECTIONAL); if (!umem->nmap) { ret = -ENOMEM; |