linux-kernel - [ 22/86] mm: mmu_notifier: make the mmu

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Message-Id: <20130226235915.221448184@linuxfoundation.org>
Date:	Tue, 26 Feb 2013 16:07:30 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, 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>
Subject: [ 22/86] mm: mmu_notifier: make the mmu_notifier srcu static

3.4-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 mm/mmu_notifier.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- 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_st
 	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_
 
 	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;


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