On 05/14/2013 12:13 PM, MORITA Kazutaka wrote: > +static size_t get_nr_nodes(void) > +{ > + const struct vnode_info *vinfo; > + > + vinfo = get_vnode_info(); > + if (vinfo == NULL) > + return 1; > + > + return vinfo->nr_nodes; > +} Needn't we call put_vnode_info()? Thanks, Yuan