From c7548af69d9ef71512eb52d8009521eba3e768fd Mon Sep 17 00:00:00 2001
From: Chris Mason <clm@fb.com>
Date: Tue, 10 Jun 2014 13:06:56 -0700
Subject: [PATCH] Btrfs: convert smp_mb__{before,after}_clear_bit

The new call is smp_mb__{before,after}_atomic.  The __ gives us extra
protection from the atomic rays.

Signed-off-by: Chris Mason <clm@fb.com>
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Reading git-format-patch failed