2130 zvol DKIOCFREE uses nested DMU transactions

*** 1703,1715 ****
                  if (error != 0) {
                          dmu_tx_abort(tx);
                  } else {
                          zvol_log_truncate(zv, tx, df.df_start,
                              df.df_length, B_TRUE);
                          error = dmu_free_long_range(zv->zv_objset, ZVOL_OBJ,
                              df.df_start, df.df_length);
-                         dmu_tx_commit(tx);
                  }
  
                  zfs_range_unlock(rl);
  
                  if (error == 0) {
--- 1703,1715 ----
                  if (error != 0) {
                          dmu_tx_abort(tx);
                  } else {
                          zvol_log_truncate(zv, tx, df.df_start,
                              df.df_length, B_TRUE);
+                         dmu_tx_commit(tx);
                          error = dmu_free_long_range(zv->zv_objset, ZVOL_OBJ,
                              df.df_start, df.df_length);
                  }
  
                  zfs_range_unlock(rl);
  
                  if (error == 0) {