smb_spoolfid_t
smb_spoolfid_t *sf;
sf = kmem_zalloc(sizeof (smb_spoolfid_t), KM_SLEEP);
smb_spoolfid_t *spfid;
kmem_free(spfid, sizeof (smb_spoolfid_t));
sizeof (smb_spoolfid_t), offsetof(smb_spoolfid_t, sf_lnd));