Function ztest_rll_lock

freebsd/contrib/openzfs/cmd/ztest/ztest.c:1494–1510

}

static void
ztest_rll_lock(rll_t *rll, rl_type_t type)
{
	mutex_enter(&rll->rll_lock);

	if (type == RL_READER) {
		while (rll->rll_writer != NULL)
			(void) cv_wait(&rll->rll_cv, &rll->rll_lock);
		rll->rll_readers++;
	} else {
		while (rll->rll_writer != NULL || rll->rll_readers)
			(void) cv_wait(&rll->rll_cv, &rll->rll_lock);
		rll->rll_writer = curthread;
	}

	mutex_exit(&rll->rll_lock);
}

static void
ztest_rll_unlock(rll_t *rll)