osd_get_unlocked
value = osd_get_unlocked(type, osd, slot);
osd_get_unlocked(OSD_JAIL, &(pr)->pr_osd, (slot))
void *osd_get_unlocked(u_int type, struct osd *osd, u_int slot);
osd_get_unlocked(OSD_THREAD, &(td)->td_osd, (slot))