some reordering

src/table/gc.rs

@@ -25,8 +25,8 @@ const TABLE_GC_BATCH_SIZE: usize = 1024;
 const TABLE_GC_RPC_TIMEOUT: Duration = Duration::from_secs(30);
 
 pub struct TableGC<F: TableSchema, R: TableReplication> {
-	data: Arc<TableData<F, R>>,
 	system: Arc<System>,
+	data: Arc<TableData<F, R>>,
 
 	rpc_client: Arc<RpcClient<GcRPC>>,
 }
@@ -46,16 +46,16 @@ where
 	R: TableReplication + 'static,
 {
 	pub(crate) fn launch(
-		data: Arc<TableData<F, R>>,
 		system: Arc<System>,
+		data: Arc<TableData<F, R>>,
 		rpc_server: &mut RpcServer,
 	) -> Arc<Self> {
 		let rpc_path = format!("table_{}/gc", data.name);
 		let rpc_client = system.rpc_client::<GcRPC>(&rpc_path);
 
 		let gc = Arc::new(Self {
-			data: data.clone(),
 			system: system.clone(),
+			data: data.clone(),
 			rpc_client,
 		});
 

src/table/merkle.rs

@@ -38,7 +38,6 @@ pub fn hash_of_merkle_partition_opt(p: Option<MerklePartition>) -> Hash {
 
 pub struct MerkleUpdater<F: TableSchema, R: TableReplication> {
 	data: Arc<TableData<F, R>>,
-	background: Arc<BackgroundRunner>,
 
 	// Content of the todo tree: items where
 	// - key = the key of an item in the main table, ie hash(partition_key)+sort_key
@@ -86,19 +85,18 @@ where
 	R: TableReplication + 'static,
 {
 	pub(crate) fn launch(
+		background: &BackgroundRunner,
 		data: Arc<TableData<F, R>>,
-		background: Arc<BackgroundRunner>,
 	) -> Arc<Self> {
 		let empty_node_hash = blake2sum(&rmp_to_vec_all_named(&MerkleNode::Empty).unwrap()[..]);
 
 		let ret = Arc::new(Self {
 			data,
-			background,
 			empty_node_hash,
 		});
 
 		let ret2 = ret.clone();
-		ret.background.spawn_worker(
+		background.spawn_worker(
 			format!("Merkle tree updater for {}", ret.data.name),
 			|must_exit: watch::Receiver<bool>| ret2.updater_loop(must_exit),
 		);

src/table/table.rs

@@ -66,7 +66,7 @@ where
 
 		let data = TableData::new(name, instance, replication, db);
 
-		let merkle_updater = MerkleUpdater::launch(data.clone(), system.background.clone());
+		let merkle_updater = MerkleUpdater::launch(&system.background, data.clone());
 
 		let syncer = TableSyncer::launch(
 			system.clone(),
@@ -74,7 +74,7 @@ where
 			merkle_updater.clone(),
 			rpc_server,
 		);
-		TableGC::launch(data.clone(), system.clone(), rpc_server);
+		TableGC::launch(system.clone(), data.clone(), rpc_server);
 
 		let table = Arc::new(Self {
 			system,