From 3d28557ac035dbe620c22fdfe4b019ed138bdf60 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomasz=20Mi=C4=85sko?= <tomasz.miasko@gmail.com>
Date: Fri, 3 Jul 2020 03:55:16 +0200
Subject: [PATCH] Remove unnecessary synchronization when cloning shared
 representation (#404)

---
 src/bytes.rs     | 2 +-
 src/bytes_mut.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/bytes.rs b/src/bytes.rs
index 08bc9b3..79a09f3 100644
--- a/src/bytes.rs
+++ b/src/bytes.rs
@@ -928,7 +928,7 @@ const KIND_VEC: usize = 0b1;
 const KIND_MASK: usize = 0b1;
 
 unsafe fn shared_clone(data: &AtomicPtr<()>, ptr: *const u8, len: usize) -> Bytes {
-    let shared = data.load(Ordering::Acquire);
+    let shared = data.load(Ordering::Relaxed);
     shallow_clone_arc(shared as _, ptr, len)
 }
 
diff --git a/src/bytes_mut.rs b/src/bytes_mut.rs
index 4d0585e..802745e 100644
--- a/src/bytes_mut.rs
+++ b/src/bytes_mut.rs
@@ -1495,7 +1495,7 @@ static SHARED_VTABLE: Vtable = Vtable {
 };
 
 unsafe fn shared_v_clone(data: &AtomicPtr<()>, ptr: *const u8, len: usize) -> Bytes {
-    let shared = data.load(Ordering::Acquire) as *mut Shared;
+    let shared = data.load(Ordering::Relaxed) as *mut Shared;
     increment_shared(shared);
 
     let data = AtomicPtr::new(shared as _);