--- zfs-0.7.1/configure	2017-08-08 23:01:41.000000000 +0000
+++ zfs-0.7.1.new/configure	2017-09-24 07:30:04.292536088 +0000
@@ -25825,6 +25831,7 @@
 {
 
 		new_sync_read(NULL, NULL, 0, NULL);
+		new_sync_write(NULL, NULL, 0, NULL);
 
   ;
   return 0;
@@ -43855,6 +43862,7 @@
 {
 
 		new_sync_read(NULL, NULL, 0, NULL);
+		new_sync_write(NULL, NULL, 0, NULL);
 
   ;
   return 0;