linux-kernel - [PATCH 077/139] mm: mmu_notifier: make the mmu

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Date:	Thu, 28 Feb 2013 14:43:47 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Andrea Arcangeli <aarcange@...hat.com>,
	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>,
	Sagi Grimberg <sagig@...lanox.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Haggai Eran <haggaie@...lanox.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 077/139] mm: mmu_notifier: make the mmu_notifier srcu static

3.5.7.7 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrea Arcangeli <aarcange@...hat.com>

commit 70400303ce0c4ced3139499c676d5c79636b0c72 upstream.

The variable must be static especially given the variable name.

s/RCU/SRCU/ over a few comments.

Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>
Cc: Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
Cc: Sagi Grimberg <sagig@...lanox.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Haggai Eran <haggaie@...lanox.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 mm/mmu_notifier.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
index 35ff447..3775c90 100644
--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -20,7 +20,7 @@
 #include <linux/slab.h>
 
 /* global SRCU for all MMs */
-struct srcu_struct srcu;
+static struct srcu_struct srcu;
 
 /*
  * This function can't run concurrently against mmu_notifier_register
@@ -41,7 +41,7 @@ void __mmu_notifier_release(struct mm_struct *mm)
 	int id;
 
 	/*
-	 * RCU here will block mmu_notifier_unregister until
+	 * SRCU here will block mmu_notifier_unregister until
 	 * ->release returns.
 	 */
 	id = srcu_read_lock(&srcu);
@@ -302,7 +302,7 @@ void mmu_notifier_unregister(struct mmu_notifier *mn, struct mm_struct *mm)
 
 	if (!hlist_unhashed(&mn->hlist)) {
 		/*
-		 * RCU here will force exit_mmap to wait ->release to finish
+		 * SRCU here will force exit_mmap to wait ->release to finish
 		 * before freeing the pages.
 		 */
 		int id;
-- 
1.8.1.2

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