extern void lustre_groups_from_list(cfs_group_info_t *ginfo, gid_t *glist);
extern void lustre_groups_sort(cfs_group_info_t *group_info);
extern int lustre_in_group_p(struct lu_ucred *mu, gid_t grp);
extern void lustre_groups_from_list(cfs_group_info_t *ginfo, gid_t *glist);
extern void lustre_groups_sort(cfs_group_info_t *group_info);
extern int lustre_in_group_p(struct lu_ucred *mu, gid_t grp);