From be3e7844980352756de4261b276ee2ba5be7a26b Mon Sep 17 00:00:00 2001
From: Peter Zijlstra <peterz@infradead.org>
Date: Tue, 24 May 2016 14:45:21 +0200
Subject: locking/spinlock: Update spin_unlock_wait() users

With the modified semantics of spin_unlock_wait() a number of
explicit barriers can be removed. Also update the comment for the
do_exit() usecase, as that was somewhat stale/obscure.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 ipc/sem.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'ipc')

diff --git a/ipc/sem.c b/ipc/sem.c
index 84dff3df11a4..ae72b3cddc8d 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -282,7 +282,6 @@ static void sem_wait_array(struct sem_array *sma)
 		sem = sma->sem_base + i;
 		spin_unlock_wait(&sem->lock);
 	}
-	smp_acquire__after_ctrl_dep();
 }
 
 /*
-- 
cgit v1.2.3