From 15f02dc62c99fc789d8f0b76388bdfd5e2e8d423 Mon Sep 17 00:00:00 2001
From: disksing <i@disksing.com>
Date: Wed, 5 May 2021 21:54:33 +0800
Subject: [PATCH] store/tikv: remove use of IsStatenessReadOnly option in
 store/tikv

Signed-off-by: disksing <i@disksing.com>
---
 store/driver/txn/snapshot.go   |  2 ++
 store/driver/txn/txn_driver.go |  2 ++
 store/tikv/snapshot.go         | 11 +++++++----
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/store/driver/txn/snapshot.go b/store/driver/txn/snapshot.go
index 3d41ef8cfa1ae..432cae24dbe16 100644
--- a/store/driver/txn/snapshot.go
+++ b/store/driver/txn/snapshot.go
@@ -73,6 +73,8 @@ func (s *tikvSnapshot) SetOption(opt int, val interface{}) {
 		s.KVSnapshot.SetNotFillCache(val.(bool))
 	case tikvstore.SnapshotTS:
 		s.KVSnapshot.SetSnapshotTS(val.(uint64))
+	case tikvstore.IsStalenessReadOnly:
+		s.KVSnapshot.SetIsStatenessReadOnly(val.(bool))
 	default:
 		s.KVSnapshot.SetOption(opt, val)
 	}
diff --git a/store/driver/txn/txn_driver.go b/store/driver/txn/txn_driver.go
index 3b5435d596c77..58e2a8f9e440d 100644
--- a/store/driver/txn/txn_driver.go
+++ b/store/driver/txn/txn_driver.go
@@ -152,6 +152,8 @@ func (txn *tikvTxn) SetOption(opt int, val interface{}) {
 		txn.SetEnable1PC(val.(bool))
 	case tikvstore.TxnScope:
 		txn.SetScope(val.(string))
+	case tikvstore.IsStalenessReadOnly:
+		txn.KVTxn.GetSnapshot().SetIsStatenessReadOnly(val.(bool))
 	default:
 		txn.KVTxn.SetOption(opt, val)
 	}
diff --git a/store/tikv/snapshot.go b/store/tikv/snapshot.go
index 2b9926c7a2b9a..cc3605b8008c5 100644
--- a/store/tikv/snapshot.go
+++ b/store/tikv/snapshot.go
@@ -579,10 +579,6 @@ func (s *KVSnapshot) SetOption(opt int, val interface{}) {
 		s.mu.Unlock()
 	case kv.SampleStep:
 		s.sampleStep = val.(uint32)
-	case kv.IsStalenessReadOnly:
-		s.mu.Lock()
-		s.mu.isStaleness = val.(bool)
-		s.mu.Unlock()
 	case kv.MatchStoreLabels:
 		s.mu.Lock()
 		s.mu.matchStoreLabels = val.([]*metapb.StoreLabel)
@@ -625,6 +621,13 @@ func (s *KVSnapshot) SetPriority(pri Priority) {
 	s.priority = pri
 }
 
+// SetIsStatenessReadOnly indicates whether the transaction is staleness read only transaction
+func (s *KVSnapshot) SetIsStatenessReadOnly(b bool) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.mu.isStaleness = b
+}
+
 // SnapCacheHitCount gets the snapshot cache hit count. Only for test.
 func (s *KVSnapshot) SnapCacheHitCount() int {
 	return int(atomic.LoadInt64(&s.mu.hitCnt))