From fbdc86f3bd597e108fa03d998132d04fcfe1d669 Mon Sep 17 00:00:00 2001
From: Namhyung Kim <namhyung@gmail.com>
Date: Mon, 31 Oct 2011 20:18:56 +0000
Subject: [PATCH] dm: remove superfluous smp_mb

Since set_current_state() contains a memory barrier in it,
an additional barrier isn't needed.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---
 drivers/md/dm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 52a8fd8eb17f..2fe3017ba97c 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2326,7 +2326,6 @@ static int dm_wait_for_completion(struct mapped_device *md, int interruptible)
 	while (1) {
 		set_current_state(interruptible);
 
-		smp_mb();
 		if (!md_in_flight(md))
 			break;