xen/scsifront: use offset_in_page() macro

Use offset_in_page() macro instead of open-coding. Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Juergen Gross <[email protected]> Signed-off-by: Juergen Gross <[email protected]>
opendata26 · May 2, 2017 · 6483e31 · 6483e31
1 parent d5ff506
commit 6483e31
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/scsi/xen-scsifront.c b/drivers/scsi/xen-scsifront.c
@@ -434,7 +434,7 @@ static int map_data_for_request(struct vscsifrnt_info *info,
 
 	if (seg_grants) {
 		page = virt_to_page(seg);
-		off = (unsigned long)seg & ~PAGE_MASK;
+		off = offset_in_page(seg);
 		len = sizeof(struct scsiif_request_segment) * data_grants;
 		while (len > 0) {
 			bytes = min_t(unsigned int, len, PAGE_SIZE - off);