private AccountSharedData.owner (#16760)

* private AccountSharedData.owner

* fix perf test

programs/bpf/tests/programs.rs

@@ -984,7 +984,7 @@ fn test_program_bpf_invoke_sanity() {
 
         assert_eq!(43, bank.get_balance(&derived_key1));
         let account = bank.get_account(&derived_key1).unwrap();
-        assert_eq!(invoke_program_id, account.owner);
+        assert_eq!(&invoke_program_id, account.owner());
         assert_eq!(
             MAX_PERMITTED_DATA_INCREASE,
             bank.get_account(&derived_key1).unwrap().data().len()

runtime/src/accounts.rs

@@ -1038,7 +1038,7 @@ pub fn create_test_accounts(
     for t in 0..num {
         let pubkey = solana_sdk::pubkey::new_rand();
         let account =
-            AccountSharedData::new((t + 1) as u64, 0, &AccountSharedData::default().owner());
+            AccountSharedData::new((t + 1) as u64, 0, AccountSharedData::default().owner());
         accounts.store_slow_uncached(slot, &pubkey, &account);
         pubkeys.push(pubkey);
     }
@@ -1049,7 +1049,7 @@ pub fn create_test_accounts(
 pub fn update_accounts_bench(accounts: &Accounts, pubkeys: &[Pubkey], slot: u64) {
     for pubkey in pubkeys {
         let amount = thread_rng().gen_range(0, 10);
-        let account = AccountSharedData::new(amount, 0, &AccountSharedData::default().owner());
+        let account = AccountSharedData::new(amount, 0, AccountSharedData::default().owner());
         accounts.store_slow_uncached(slot, &pubkey, &account);
     }
 }

sdk/src/account.rs

@@ -35,7 +35,7 @@ pub struct AccountSharedData {
     /// data held in this account
     data: Arc<Vec<u8>>,
     /// the program that owns this account. If executable, the program that loads this account.
-    pub owner: Pubkey,
+    owner: Pubkey,
     /// this account's data contains a loaded program (and is now read-only)
     pub executable: bool,
     /// the epoch at which this account will next owe rent