From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 5 Dec 2016 14:39:16 +0000 (-0500)
Subject: Cleanup: remove cmm_wmb() from rcu_xchg_pointer and rcu_cmpxchg_pointer
X-Git-Tag: v0.10.0~14
X-Git-Url: http://git.lttng.org./?a=commitdiff_plain;h=2f10494ace5729ad4c834d57f4960b48b09877f6;hp=2f10494ace5729ad4c834d57f4960b48b09877f6;p=userspace-rcu.git

Cleanup: remove cmm_wmb() from rcu_xchg_pointer and rcu_cmpxchg_pointer

Both rcu_xchg_pointer() and rcu_cmpxchg_pointer() imply both release and
acquire barriers. Therefore, the extra cmm_wmb() is redundant and can be
removed.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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