--- zzzz-none-000/linux-3.10.107/fs/btrfs/math.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/btrfs/math.h	2021-02-04 17:41:59.000000000 +0000
@@ -28,8 +28,7 @@
 	if (factor == 10)
 		return num;
 	num *= factor;
-	do_div(num, 10);
-	return num;
+	return div_u64(num, 10);
 }
 
 static inline u64 div_factor_fine(u64 num, int factor)
@@ -37,8 +36,7 @@
 	if (factor == 100)
 		return num;
 	num *= factor;
-	do_div(num, 100);
-	return num;
+	return div_u64(num, 100);
 }
 
 #endif