rl_q_load
MPASS(!rl_e_is_marked(rl_q_load(&e->rl_q_next)));
cur = rl_q_load(prev);
next = rl_q_load(&cur->rl_q_next);
if (rl_e_is_marked(rl_q_load(&cur->rl_q_next))) {
cur = rl_q_load(prev);
next = rl_q_load(&cur->rl_q_next);
cur = rl_e_unmark_unchecked(rl_q_load(prev));
cur = rl_q_load(prev);
next = rl_q_load(&cur->rl_q_next);
cur = rl_e_unmark_unchecked(rl_q_load(prev));
cur = rl_q_load(prev);
next = rl_q_load(&cur->rl_q_next);
cur = rl_q_load(prev);
cur = rl_q_load(prev);