From 927575dc86c5361e342c95676c4002ac4199f349 Mon Sep 17 00:00:00 2001
From: Matthew Parkinson <mattpark@microsoft.com>
Date: Fri, 17 Dec 2021 12:41:27 +0000
Subject: [PATCH] Increase barrier strength on ABA.

---
 src/ds/aba.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ds/aba.h b/src/ds/aba.h
index e57c574..64b0f99 100644
--- a/src/ds/aba.h
+++ b/src/ds/aba.h
@@ -112,7 +112,7 @@ namespace snmalloc
         std::atomic<Linked>& addr = parent->linked;
 
         auto result = addr.compare_exchange_weak(
-          old, xchg, std::memory_order_relaxed, std::memory_order_relaxed);
+          old, xchg, std::memory_order_acq_rel, std::memory_order_relaxed);
 #  endif
         return result;
       }