From 542eff09762e4f8ba5fb9e8cb813edfe456475f4 Mon Sep 17 00:00:00 2001
From: hanako mumei <81144685+2501babe@users.noreply.github.com>
Date: Tue, 27 Aug 2024 00:41:02 -0700
Subject: [PATCH] remove blockhash/lmaps per sig from core

---
 core/src/banking_stage/committer.rs |  7 +------
 core/src/banking_stage/consumer.rs  | 14 +-------------
 2 files changed, 2 insertions(+), 19 deletions(-)

diff --git a/core/src/banking_stage/committer.rs b/core/src/banking_stage/committer.rs
index 4c5bf8bbf5382b..ff27104251759e 100644
--- a/core/src/banking_stage/committer.rs
+++ b/core/src/banking_stage/committer.rs
@@ -12,7 +12,7 @@ use {
         transaction_batch::TransactionBatch,
         vote_sender_types::ReplayVoteSender,
     },
-    solana_sdk::{hash::Hash, pubkey::Pubkey, saturating_add_assign},
+    solana_sdk::{pubkey::Pubkey, saturating_add_assign},
     solana_svm::{
         transaction_commit_result::{TransactionCommitResult, TransactionCommitResultExtensions},
         transaction_processing_result::{
@@ -65,13 +65,10 @@ impl Committer {
         self.transaction_status_sender.is_some()
     }
 
-    #[allow(clippy::too_many_arguments)]
     pub(super) fn commit_transactions(
         &self,
         batch: &TransactionBatch,
         processing_results: Vec<TransactionProcessingResult>,
-        last_blockhash: Hash,
-        lamports_per_signature: u64,
         starting_transaction_index: Option<usize>,
         bank: &Arc<Bank>,
         pre_balance_info: &mut PreBalanceInfo,
@@ -87,8 +84,6 @@ impl Committer {
         let (commit_results, commit_time_us) = measure_us!(bank.commit_transactions(
             batch.sanitized_transactions(),
             processing_results,
-            last_blockhash,
-            lamports_per_signature,
             processed_counts,
             &mut execute_and_commit_timings.execute_timings,
         ));
diff --git a/core/src/banking_stage/consumer.rs b/core/src/banking_stage/consumer.rs
index 39e3dc1fd95d5c..e1f1b67fdb41a5 100644
--- a/core/src/banking_stage/consumer.rs
+++ b/core/src/banking_stage/consumer.rs
@@ -665,17 +665,7 @@ impl Consumer {
 
         let (freeze_lock, freeze_lock_us) = measure_us!(bank.freeze_lock());
         execute_and_commit_timings.freeze_lock_us = freeze_lock_us;
-
-        // In order to avoid a race condition, leaders must get the last
-        // blockhash *before* recording transactions because recording
-        // transactions will only succeed if the block max tick height hasn't
-        // been reached yet. If they get the last blockhash *after* recording
-        // transactions, the block max tick height could have already been
-        // reached and the blockhash queue could have already been updated with
-        // a new blockhash.
-        let ((last_blockhash, lamports_per_signature), last_blockhash_us) =
-            measure_us!(bank.last_blockhash_and_lamports_per_signature());
-        execute_and_commit_timings.last_blockhash_us = last_blockhash_us;
+        execute_and_commit_timings.last_blockhash_us = 0;
 
         let (record_transactions_summary, record_us) = measure_us!(self
             .transaction_recorder
@@ -713,8 +703,6 @@ impl Consumer {
                 self.committer.commit_transactions(
                     batch,
                     processing_results,
-                    last_blockhash,
-                    lamports_per_signature,
                     starting_transaction_index,
                     bank,
                     &mut pre_balance_info,