Function is_partial

src/include/buffer.h:278–280

    }
    bool is_n_page_sized() const { return is_n_align_sized(CEPH_PAGE_SIZE); }
    bool is_partial() const {
      return have_raw() && (start() > 0 || end() < raw_length());
    }

    int get_mempool() const;
    void reassign_to_mempool(int pool);