extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,
const nfs4_stateid *stateid);
extern int nfs4_set_callback_sessionid(struct nfs_client *clp);
extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,
const nfs4_stateid *stateid);
extern int nfs4_set_callback_sessionid(struct nfs_client *clp);