nfs4_alloc_stid
stp = nfs4_alloc_stid(cstate->clp, nfs4_layout_stateid_cache,
stid = nfs4_alloc_stid(clp, stateid_slab, nfs4_free_ol_stateid);
stid = nfs4_alloc_stid(clp, deleg_slab, nfs4_free_deleg);
ns = nfs4_alloc_stid(clp, stateid_slab, nfs4_free_lock_stateid);
struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab,