xfs: use get/put_endian helpers

index da39884..c301505 100644
@@ -488,16 +488,16 @@ xfs_sb_to_disk(
 		} else {
 			switch (size) {
 			case 2:
-				*(__be16 *)(to_ptr + first) =
-					cpu_to_be16(*(__u16 *)(from_ptr + first));
+				put_be16(*(u16 *)(from_ptr + first),
+					 (__be16 *)(to_ptr + first));
 				break;
 			case 4:
-				*(__be32 *)(to_ptr + first) =
-					cpu_to_be32(*(__u32 *)(from_ptr + first));
+				put_be32(*(u32 *)(from_ptr + first),
+					 (__be32 *)(to_ptr + first));
 				break;
 			case 8:
-				*(__be64 *)(to_ptr + first) =
-					cpu_to_be64(*(__u64 *)(from_ptr + first));
+				put_be64(*(u64 *)(from_ptr + first),
+					 (__be64 *)(to_ptr + first));
 				break;
 			default:
 				ASSERT(0);