The mbuf pool private area must always be populated in a mbuf pool. The applications or drivers may expect that for a mbuf pool, the mbuf pool private area (mbuf_data_room_size and mbuf_priv_size) are properly filled. Signed-off-by: Olivier Matz <olivier.matz@6wind.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>