LSFL_SOFTIRQ
if (test_bit(LSFL_SOFTIRQ, &ls->ls_flags)) {
test_bit(LSFL_SOFTIRQ, &ls->ls_flags))
if (test_bit(LSFL_SOFTIRQ, &ls->ls_flags))
set_bit(LSFL_SOFTIRQ, &ls->ls_flags);