Function thread_lock_block

freebsd/kern/kern_mutex.c:956–966

}

struct mtx *
thread_lock_block(struct thread *td)
{
	struct mtx *lock;

	lock = td->td_lock;
	mtx_assert(lock, MA_OWNED);
	td->td_lock = &blocked_lock;

	return (lock);
}

void
thread_lock_unblock(struct thread *td, struct mtx *new)