[ 3.5.y.z extended stable ] Patch "mm: mmu_notifier: make the mmu_notifier srcu static" has been added to staging queue

Luis Henriques luis.henriques at canonical.com
Tue Feb 26 16:15:04 UTC 2013


This is a note to let you know that I have just added a patch titled

    mm: mmu_notifier: make the mmu_notifier srcu static

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From d4ddd4a0c87c9f1d18384caff309e7a02b088448 Mon Sep 17 00:00:00 2001
From: Andrea Arcangeli <aarcange at redhat.com>
Date: Mon, 8 Oct 2012 16:31:52 -0700
Subject: [PATCH] mm: mmu_notifier: make the mmu_notifier srcu static

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 at redhat.com>
Cc: Xiao Guangrong <xiaoguangrong at linux.vnet.ibm.com>
Cc: Sagi Grimberg <sagig at mellanox.com>
Cc: Peter Zijlstra <a.p.zijlstra at chello.nl>
Cc: Haggai Eran <haggaie at mellanox.com>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.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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