# \[PATCH v3 10/14\] device-dax: use ALIGN() for determining pgoff

- From: Joao Martins \<hidden\>
- Date: 2021-07-14 19:36:39 
- List: linux-doc
- Page: https://ratatoskr.run/linux-doc/2021/07/6509822
- Thread: https://ratatoskr.run/linux-mm/2021/07/6509813/t.md

```text
Rather than calculating @pgoff manually, switch to ALIGN() instead.

Suggested-by: Dan Williams <redacted>
Signed-off-by: Joao Martins <redacted>
---
 drivers/dax/device.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index dd8222a42808..0b82159b3564 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -234,8 +234,8 @@ static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf,
 		 * mapped. No need to consider the zero page, or racing
 		 * conflicting mappings.
 		 */
-		pgoff = linear_page_index(vmf->vma, vmf->address
-				& ~(fault_size - 1));
+		pgoff = linear_page_index(vmf->vma,
+				ALIGN(vmf->address, fault_size));
 		for (i = 0; i < fault_size / PAGE_SIZE; i++) {
 			struct page *page;
 
-- 
2.17.1

```