ZBUF_FLAG_ASSIGNED
KASSERT((zb->zb_flags & ZBUF_FLAG_ASSIGNED) == 0,
KASSERT((zb->zb_flags & ZBUF_FLAG_ASSIGNED) == 0,
if ((zb->zb_flags & ZBUF_FLAG_ASSIGNED) == 0) {
zb->zb_flags |= ZBUF_FLAG_ASSIGNED;
if ((zb->zb_flags & ZBUF_FLAG_ASSIGNED) == 0) {
zb->zb_flags |= ZBUF_FLAG_ASSIGNED;
zb->zb_flags &= ~ZBUF_FLAG_ASSIGNED;
if (zb->zb_flags & ZBUF_FLAG_ASSIGNED)