From b83e84b4679165e949264a12d7a7a5f09fa5fa76 Mon Sep 17 00:00:00 2001
From: Vlad Zolotarov <vladz@scylladb.com>
Date: Wed, 11 Mar 2020 17:43:13 -0400
Subject: [PATCH] db::hints:: optimize with_file_update_mutex()

Avoid extra shared_ptr copy.

Signed-off-by: Vlad Zolotarov <vladz@scylladb.com>
Reviewed-by: Benny Halevy <bhalevy@scylladb.com>
Message-Id: <20200311214313.2988-1-vladz@scylladb.com>
---
 db/hints/manager.hh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/db/hints/manager.hh b/db/hints/manager.hh
index 47b1b626cc..7e1a3e8a5d 100644
--- a/db/hints/manager.hh
+++ b/db/hints/manager.hh
@@ -391,8 +391,7 @@ public:
         /// \return Whatever \ref func returns.
         template <typename Func>
         friend inline auto with_file_update_mutex(end_point_hints_manager& ep_man, Func&& func) {
-            lw_shared_ptr<seastar::shared_mutex> lock_ptr = ep_man._file_update_mutex_ptr;
-            return with_lock(*lock_ptr, std::forward<Func>(func)).finally([lock_ptr] {});
+            return with_lock(*ep_man._file_update_mutex_ptr, std::forward<Func>(func)).finally([lock_ptr = ep_man._file_update_mutex_ptr] {});
         }
 
         const fs::path& hints_dir() const noexcept {