diff --git a/module/zfs/dsl_dataset.c b/module/zfs/dsl_dataset.c
index f6f198791797..4edf34244711 100644
--- a/module/zfs/dsl_dataset.c
+++ b/module/zfs/dsl_dataset.c
@@ -398,7 +398,7 @@ dsl_dataset_get_ref(dsl_pool_t *dp, uint64_t dsobj, void *tag,
 		mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL);
 		mutex_init(&ds->ds_recvlock, NULL, MUTEX_DEFAULT, NULL);
 		mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL);
-		rw_init(&ds->ds_rwlock, 0, 0, 0);
+		rw_init(&ds->ds_rwlock, NULL, RW_DEFAULT, NULL);
 		cv_init(&ds->ds_exclusive_cv, NULL, CV_DEFAULT, NULL);
 
 		bplist_create(&ds->ds_pending_deadlist);
diff --git a/module/zfs/zap.c b/module/zfs/zap.c
index 89446a4fbdfc..fa7e61711af0 100644
--- a/module/zfs/zap.c
+++ b/module/zfs/zap.c
@@ -394,7 +394,7 @@ zap_create_leaf(zap_t *zap, dmu_tx_t *tx)
 
 	ASSERT(RW_WRITE_HELD(&zap->zap_rwlock));
 
-	rw_init(&l->l_rwlock, 0, 0, 0);
+	rw_init(&l->l_rwlock, NULL, RW_DEFAULT, NULL);
 	rw_enter(&l->l_rwlock, RW_WRITER);
 	l->l_blkid = zap_allocate_blocks(zap, 1);
 	l->l_dbuf = NULL;
@@ -453,7 +453,7 @@ zap_open_leaf(uint64_t blkid, dmu_buf_t *db)
 	ASSERT(blkid != 0);
 
 	l = kmem_alloc(sizeof (zap_leaf_t), KM_SLEEP);
-	rw_init(&l->l_rwlock, 0, 0, 0);
+	rw_init(&l->l_rwlock, NULL, RW_DEFAULT, NULL);
 	rw_enter(&l->l_rwlock, RW_WRITER);
 	l->l_blkid = blkid;
 	l->l_bs = highbit(db->db_size)-1;
diff --git a/module/zfs/zap_micro.c b/module/zfs/zap_micro.c
index 7627504a990e..aa86bdecb11e 100644
--- a/module/zfs/zap_micro.c
+++ b/module/zfs/zap_micro.c
@@ -365,7 +365,7 @@ mzap_open(objset_t *os, uint64_t obj, dmu_buf_t *db)
 	ASSERT3U(MZAP_ENT_LEN, ==, sizeof (mzap_ent_phys_t));
 
 	zap = kmem_zalloc(sizeof (zap_t), KM_SLEEP);
-	rw_init(&zap->zap_rwlock, 0, 0, 0);
+	rw_init(&zap->zap_rwlock, NULL, RW_DEFAULT, NULL);
 	rw_enter(&zap->zap_rwlock, RW_WRITER);
 	zap->zap_objset = os;
 	zap->zap_object = obj;