ethdb, core: implement delete for db batch (#17101)

core/blockchain.go

@@ -269,8 +269,8 @@ func (bc *BlockChain) SetHead(head uint64) error {
 	defer bc.mu.Unlock()
 
 	// Rewind the header chain, deleting all block bodies until then
-	delFn := func(hash common.Hash, num uint64) {
-		rawdb.DeleteBody(bc.db, hash, num)
+	delFn := func(db rawdb.DatabaseDeleter, hash common.Hash, num uint64) {
+		rawdb.DeleteBody(db, hash, num)
 	}
 	bc.hc.SetHead(head, delFn)
 	currentHeader := bc.hc.CurrentHeader()
@@ -1340,9 +1340,12 @@ func (bc *BlockChain) reorg(oldBlock, newBlock *types.Block) error {
 	diff := types.TxDifference(deletedTxs, addedTxs)
 	// When transactions get deleted from the database that means the
 	// receipts that were created in the fork must also be deleted
+	batch := bc.db.NewBatch()
 	for _, tx := range diff {
-		rawdb.DeleteTxLookupEntry(bc.db, tx.Hash())
+		rawdb.DeleteTxLookupEntry(batch, tx.Hash())
 	}
+	batch.Write()
+
 	if len(deletedLogs) > 0 {
 		go bc.rmLogsFeed.Send(RemovedLogsEvent{deletedLogs})
 	}