From 24ffbc852efe8ba05172f184b39cfa7a9047b32a Mon Sep 17 00:00:00 2001
From: jeff washington <jeff.washington@solana.com>
Date: Fri, 29 Mar 2024 11:53:08 -0500
Subject: [PATCH] remove disable_read_cache_updates_count

---
 accounts-db/src/accounts_db.rs | 29 -----------------------------
 1 file changed, 29 deletions(-)

diff --git a/accounts-db/src/accounts_db.rs b/accounts-db/src/accounts_db.rs
index 41fef71b3cbece..f9d40da83e9f7c 100644
--- a/accounts-db/src/accounts_db.rs
+++ b/accounts-db/src/accounts_db.rs
@@ -1270,40 +1270,12 @@ struct RemoveUnrootedSlotsSynchronization {
 
 type AccountInfoAccountsIndex = AccountsIndex<AccountInfo, AccountInfo>;
 
-/// When an instance of this exists, the read cache is not updated for account loads.
-/// When all instances are dropped, the read cache is populated for account loads.
-/// By default, all loads will populate the read cache.
-/// This cannot be incorrect, it is only a performance penalty at worst.
-pub struct DisableReadCacheUpdates<'a> {
-    accounts_db: &'a AccountsDb,
-}
-
-impl<'a> DisableReadCacheUpdates<'a> {
-    pub fn new(accounts_db: &'a AccountsDb) -> Self {
-        accounts_db
-            .disable_read_cache_updates_count
-            .fetch_add(1, Ordering::Relaxed);
-        Self { accounts_db }
-    }
-}
-
-impl<'a> Drop for DisableReadCacheUpdates<'a> {
-    fn drop(&mut self) {
-        self.accounts_db
-            .disable_read_cache_updates_count
-            .fetch_sub(1, Ordering::Relaxed);
-    }
-}
-
 // This structure handles the load/store of the accounts
 #[derive(Debug)]
 pub struct AccountsDb {
     /// Keeps tracks of index into AppendVec on a per slot basis
     pub accounts_index: AccountInfoAccountsIndex,
 
-    /// if != 0, read cache is not updated on loads
-    disable_read_cache_updates_count: AtomicU64,
-
     /// Some(offset) iff we want to squash old append vecs together into 'ancient append vecs'
     /// Some(offset) means for slots up to (max_slot - (slots_per_epoch - 'offset')), put them in ancient append vecs
     pub ancient_append_vec_offset: Option<i64>,
@@ -2357,7 +2329,6 @@ impl AccountsDb {
             active_stats: ActiveStats::default(),
             skip_initial_hash_calc: false,
             ancient_append_vec_offset: None,
-            disable_read_cache_updates_count: AtomicU64::default(),
             accounts_index,
             storage: AccountStorage::default(),
             accounts_cache: AccountsCache::default(),