# \[PATCH 11/15\] ubd: use bvec\_virt

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2021-08-04 10:07:35 
- List: linux-block
- Page: https://ratatoskr.run/linux-block/2021/08/6404283
- Thread: https://ratatoskr.run/linux-block/2021/08/6404270/t.md

```text
Use bvec_virt instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/um/drivers/ubd_kern.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index e497185dd393..cd9dc0556e91 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1268,8 +1268,7 @@ static void ubd_map_req(struct ubd *dev, struct io_thread_req *io_req,
 		rq_for_each_segment(bvec, req, iter) {
 			BUG_ON(i >= io_req->desc_cnt);
 
-			io_req->io_desc[i].buffer =
-				page_address(bvec.bv_page) + bvec.bv_offset;
+			io_req->io_desc[i].buffer = bvec_virt(&bvec);
 			io_req->io_desc[i].length = bvec.bv_len;
 			i++;
 		}
-- 
2.30.2

```