From 87988c67c0a958d17821f1bd60081c7a34fe9286 Mon Sep 17 00:00:00 2001
From: Change72 <guochang14@tsinghua.org.cn>
Date: Fri, 27 Oct 2023 13:07:51 -0700
Subject: [PATCH] open_direct_io_by_default

---
 src/config/config.cc | 6 +++++-
 src/config/config.h  | 4 +++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/config/config.cc b/src/config/config.cc
index 164bb169025..917f74738ac 100644
--- a/src/config/config.cc
+++ b/src/config/config.cc
@@ -205,7 +205,11 @@ Config::Config() {
        new IntField(&RocksDB.max_bytes_for_level_multiplier, 10, 1, 100)},
       {"rocksdb.level_compaction_dynamic_level_bytes", false,
        new YesNoField(&RocksDB.level_compaction_dynamic_level_bytes, false)},
-
+      {"rocksdb.use_direct_reads", true,
+       new YesNoField(&RocksDB.use_direct_reads, true)},
+      {"rocksdb.use_direct_io_for_flush_and_compaction", true,
+       new YesNoField(&RocksDB.use_direct_io_for_flush_and_compaction, true)},
+       
       /* rocksdb write options */
       {"rocksdb.write_options.sync", true, new YesNoField(&RocksDB.write_options.sync, false)},
       {"rocksdb.write_options.disable_wal", true, new YesNoField(&RocksDB.write_options.disable_WAL, false)},
diff --git a/src/config/config.h b/src/config/config.h
index 4cf7498f69b..b10c967cdad 100644
--- a/src/config/config.h
+++ b/src/config/config.h
@@ -182,7 +182,9 @@ struct Config {
     int max_bytes_for_level_base;
     int max_bytes_for_level_multiplier;
     bool level_compaction_dynamic_level_bytes;
-
+    bool use_direct_reads;
+    bool use_direct_io_for_flush_and_compaction;
+    
     struct WriteOptions {
       bool sync;
       bool disable_WAL;