Re: [PATCH v2 06/10] IB/core: Add optional PCI P2P flag to rdma_rw_ctx_[init|destroy]()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hey Sagi,

Thanks for the review!


On 01/03/18 03:32 AM, Sagi Grimberg wrote:
  int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
          struct scatterlist *sg, u32 sg_cnt, u32 sg_offset,
-        u64 remote_addr, u32 rkey, enum dma_data_direction dir)
+        u64 remote_addr, u32 rkey, enum dma_data_direction dir,
+        unsigned int flags)
  {
      struct ib_device *dev = qp->pd->device;
      int ret;
-    ret = ib_dma_map_sg(dev, sg, sg_cnt, dir);
+    if (flags & RDMA_RW_CTX_FLAG_PCI_P2PDMA)
+        ret = pci_p2pdma_map_sg(dev->dma_device, sg, sg_cnt, dir);
+    else
+        ret = ib_dma_map_sg(dev, sg, sg_cnt, dir);
+

Why not use is_pci_p2pdma_page(sg) instead of a flag? It would be so
much cleaner...

Yes, that sounds like a good idea. We can make that change for v3.

Logan



[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux