SF_FLUSH_WQ
zss->sl_flags &= ~SF_FLUSH_WQ;
zss->sl_flags |= SF_FLUSH_WQ;
if (zss->sl_flags & SF_FLUSH_WQ) {
zss->sl_flags &= ~SF_FLUSH_WQ;
zss->sl_flags &= ~SF_FLUSH_WQ;
if (zss->sl_flags & SF_FLUSH_WQ) {
if (zss->sl_flags & SF_FLUSH_WQ) {
zss->sl_flags &= ~SF_FLUSH_WQ;
zss->sl_flags &= ~SF_FLUSH_WQ;
zss->sl_flags |= SF_FLUSH_WQ;
zss->sl_flags &= ~SF_FLUSH_WQ;
if (zss->sl_flags & SF_FLUSH_WQ) {