From: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
The ib_dma_unmap_page() must match the length of the ib_dma_map_page(),
which is based on odp_shift. Otherwise iommu resources under this API
will not be properly freed.
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
---
drivers/infiniband/core/umem_odp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c
index 9001cc10770a24..bcfa5c904a4bbf 100644
--- a/drivers/infiniband/core/umem_odp.c
+++ b/drivers/infiniband/core/umem_odp.c
@@ -726,7 +726,8 @@ void ib_umem_odp_unmap_dma_pages(struct ib_umem_odp *umem_odp, u64 virt,
WARN_ON(!dma_addr);
- ib_dma_unmap_page(dev, dma_addr, PAGE_SIZE,
+ ib_dma_unmap_page(dev, dma_addr,
+ BIT(umem_odp->page_shift),
DMA_BIDIRECTIONAL);
if (dma & ODP_WRITE_ALLOWED_BIT) {
struct page *head_page = compound_head(page);
--
2.21.0
