code: public void setSg_list(LinkedList<IbvSge> sg_list) {
  		this.sg_list.clear();
  		this.sg_list.addAll(sg_list);
  		this.num_sge = sg_list.size();
  	}
docs: Sets the scatter/gather elements of this work request. Each scatter/gather element refers to one single buffer.
  
  @param sg_list the new sg_list