Function rw_enter

freebsd/contrib/openzfs/lib/libzpool/kernel.c:254–264

}

void
rw_enter(krwlock_t *rwlp, krw_t rw)
{
	if (rw == RW_READER) {
		VERIFY0(pthread_rwlock_rdlock(&rwlp->rw_lock));
		atomic_inc_uint(&rwlp->rw_readers);
	} else {
		VERIFY0(pthread_rwlock_wrlock(&rwlp->rw_lock));
		rwlp->rw_owner = pthread_self();
	}
}

void
rw_exit(krwlock_t *rwlp)