FLG_L1_ACTIVATING
if (test_bit(FLG_L1_ACTIVATING, &l1->Flags))
if (test_bit(FLG_L1_ACTIVATING, &l1->Flags)) {
if (test_and_clear_bit(FLG_L1_ACTIVATING, &l1->Flags)) {
test_and_clear_bit(FLG_L1_ACTIVATING, &l1->Flags);
test_and_set_bit(FLG_L1_ACTIVATING, &l1->Flags);