From 5fac4729ccaa72ff5500c525e7ff014523182588 Mon Sep 17 00:00:00 2001
From: Zhongyi Xie <xiez@fb.com>
Date: Tue, 21 Nov 2017 20:06:55 -0800
Subject: [PATCH] make compaction_readahead_size_ thread safe

Summary:
this should fix the failing tsan_check
Closes https://github.com/facebook/rocksdb/pull/3192

Differential Revision: D6390004

Pulled By: miasantreble

fbshipit-source-id: 6cadfc6f68febb1a77b0abcdb5416570dad926a5
---
 db/db_test_util.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/db/db_test_util.h b/db/db_test_util.h
index cca776157..0462d37c0 100644
--- a/db/db_test_util.h
+++ b/db/db_test_util.h
@@ -574,7 +574,7 @@ class SpecialEnv : public EnvWrapper {
 
   std::atomic<bool> is_wal_sync_thread_safe_{true};
 
-  size_t compaction_readahead_size_;
+  std::atomic<size_t> compaction_readahead_size_;
 };
 
 class MockTimeEnv : public EnvWrapper {