Method rebuild

src/common/buffer.cc:1172–1184

  }

  void buffer::list::rebuild()
  {
    if (_len == 0) {
      _carriage = &always_empty_bptr;
      _buffers.clear_and_dispose();
      _num = 0;
      return;
    }
    if ((_len & ~CEPH_PAGE_MASK) == 0)
      rebuild(ptr_node::create(buffer::create_page_aligned(_len)));
    else
      rebuild(ptr_node::create(buffer::create(_len)));
  }

  void buffer::list::rebuild(
    std::unique_ptr<buffer::ptr_node, buffer::ptr_node::disposer> nb)