From 97beadd4fcd91d7db31514ab16a6a52bbcd77b8a Mon Sep 17 00:00:00 2001
From: Felix Lange <fjl@twurst.com>
Date: Thu, 7 Sep 2017 13:20:31 +0200
Subject: [PATCH] ethdb: remove memory batch lock

Batches are not safe for concurrent use.
---
 ethdb/memory_database.go | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/ethdb/memory_database.go b/ethdb/memory_database.go
index d271d8889b..7f91220305 100644
--- a/ethdb/memory_database.go
+++ b/ethdb/memory_database.go
@@ -101,21 +101,14 @@ type kv struct{ k, v []byte }
 type memBatch struct {
 	db     *MemDatabase
 	writes []kv
-	lock   sync.RWMutex
 }
 
 func (b *memBatch) Put(key, value []byte) error {
-	b.lock.Lock()
-	defer b.lock.Unlock()
-
 	b.writes = append(b.writes, kv{common.CopyBytes(key), common.CopyBytes(value)})
 	return nil
 }
 
 func (b *memBatch) Write() error {
-	b.lock.RLock()
-	defer b.lock.RUnlock()
-
 	b.db.lock.Lock()
 	defer b.db.lock.Unlock()