From: "Shiraz, Saleem" <shiraz.saleem@xxxxxxxxx>
Use the for_each_sg_dma_page iterator variant to walk the umem
DMA-mapped SGL and get the page DMA address. This avoids the extra
loop to iterate pages in the SGE when for_each_sg iterator is used.
Additionally, purge umem->page_shift usage in the driver
as its only relevant for ODP MRs. Use system page size and
shift instead.
Cc: Adit Ranadive <aditr@xxxxxxxxxx>
Signed-off-by: Shiraz, Saleem <shiraz.saleem@xxxxxxxxx>
---
drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c
index fb0c5c0..7944c58 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c
@@ -183,25 +183,20 @@ int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir,
struct ib_umem *umem, u64 offset)
{
u64 i = offset;
- int j, entry;
- int ret = 0, len = 0;
- struct scatterlist *sg;
+ int ret = 0;
+ struct sg_dma_page_iter sg_iter;
if (offset >= pdir->npages)
return -EINVAL;
- for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
- len = sg_dma_len(sg) >> PAGE_SHIFT;
- for (j = 0; j < len; j++) {
- dma_addr_t addr = sg_dma_address(sg) +
- (j << umem->page_shift);
+ for_each_sg_dma_page(umem->sg_head.sgl, &sg_iter, umem->nmap, 0) {
+ dma_addr_t addr = sg_page_iter_dma_address(&sg_iter);
- ret = pvrdma_page_dir_insert_dma(pdir, i, addr);
- if (ret)
- goto exit;
+ ret = pvrdma_page_dir_insert_dma(pdir, i, addr);
+ if (ret)
+ goto exit;
- i++;
- }
+ i++;
}
exit:
--
1.8.3.1
