git: openjdk/jdk: 8256474: Migrate Mutex _owner accesses to use Atomic operations

[David Holmes]

Changeset: 927504e8
Author:    David Holmes <dholmes at openjdk.org>
Date:      2020-12-01 23:10:39 +0000
URL:       https://git.openjdk.java.net/jdk/commit/927504e8

8256474: Migrate Mutex _owner accesses to use Atomic operations

Reviewed-by: coleenp, kbarrett

! src/hotspot/share/runtime/mutex.cpp
! src/hotspot/share/runtime/mutex.hpp