diff --git a/db/db_impl.cc b/db/db_impl.cc
index 06f3bb074..eabdfcd15 100644
--- a/db/db_impl.cc
+++ b/db/db_impl.cc
@@ -256,7 +256,7 @@ DBImpl::DBImpl(const DBOptions& options, const std::string& dbname)
   LogFlush(db_options_.info_log);
 }
 
-void DBImpl::CancelAllBackgroundWork(bool wait) {
+void DBImpl::CancelAllBackgroundWork() {
   shutting_down_.store(true, std::memory_order_release);
 }
 
@@ -276,7 +276,7 @@ DBImpl::~DBImpl() {
     }
     versions_->GetColumnFamilySet()->FreeDeadColumnFamilies();
   }
-  CancelAllBackgroundWork(true);
+  CancelAllBackgroundWork();
   mutex_.Unlock();
   int compactions_unscheduled = env_->UnSchedule(this, Env::Priority::LOW);
   int flushes_unscheduled = env_->UnSchedule(this, Env::Priority::HIGH);
diff --git a/db/db_impl.h b/db/db_impl.h
index b5d529bdf..3099d1da9 100644
--- a/db/db_impl.h
+++ b/db/db_impl.h
@@ -267,7 +267,7 @@ class DBImpl : public DB {
 
   const SnapshotList& snapshots() const { return snapshots_; }
 
-  void CancelAllBackgroundWork(bool wait = false);
+  void CancelAllBackgroundWork();
 
  protected:
   Env* const env_;
diff --git a/hdfs/env_hdfs.h b/hdfs/env_hdfs.h
index 3c03543a6..cc94d52af 100644
--- a/hdfs/env_hdfs.h
+++ b/hdfs/env_hdfs.h
@@ -107,8 +107,8 @@ class HdfsEnv : public Env {
     posixEnv->Schedule(function, arg, pri, tag);
   }
 
-  virtual int UnSchedule(void* arg, Priority pri) {
-    posixEnv->UnSchedule(arg, pri);
+  virtual int UnSchedule(void* tag, Priority pri) {
+    posixEnv->UnSchedule(tag, pri);
   }
 
   virtual void StartThread(void (*function)(void* arg), void* arg) {
@@ -328,7 +328,7 @@ class HdfsEnv : public Env {
   virtual void Schedule(void (*function)(void* arg), void* arg,
                         Priority pri = LOW, void* tag = nullptr) override {}
 
-  virtual int UnSchedule(void* arg, Priority pri) override { return 0; }
+  virtual int UnSchedule(void* tag, Priority pri) override { return 0; }
 
   virtual void StartThread(void (*function)(void* arg), void* arg) override {}
 
diff --git a/utilities/convenience/convenience.cc b/utilities/convenience/convenience.cc
index 55303f06b..fc60b0e3a 100644
--- a/utilities/convenience/convenience.cc
+++ b/utilities/convenience/convenience.cc
@@ -16,7 +16,7 @@
 namespace rocksdb {
 
 void CancelAllBackgroundWork(DB* db) {
-  (dynamic_cast<DBImpl*>(db))->CancelAllBackgroundWork(false);
+  (dynamic_cast<DBImpl*>(db))->CancelAllBackgroundWork();
 }
 }  // namespace rocksdb