linux-kernel - [PATCH 4/4] mm: cleancache: Use __read

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Date:	Thu, 12 Jan 2012 15:36:20 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Cc:	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Beulich <JBeulich@...ell.com>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Hugh Dickins <hughd@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Nitin Gupta <ngupta@...are.org>,
	Matthew Wilcox <matthew@....cx>,
	Chris Mason <chris.mason@...cle.com>,
	Rik Riel <riel@...hat.com>
Subject: [PATCH 4/4] mm: cleancache: Use __read_mostly as appropiate.

From: Dan Magenheimer <dan.magenheimer@...cle.com>

The values are rarely changed so might as well put them in the
appropiate section.

Signed-off-by: Dan Magenheimer <dan.magenheimer@...cle.com>
Reviewed-by: Konrad Wilk <konrad.wilk@...cle.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc: Jan Beulich <JBeulich@...ell.com>
Cc: Seth Jennings <sjenning@...ux.vnet.ibm.com>
Cc: Jeremy Fitzhardinge <jeremy@...p.org>
Cc: Hugh Dickins <hughd@...gle.com>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Nitin Gupta <ngupta@...are.org>
Cc: Matthew Wilcox <matthew@....cx>
Cc: Chris Mason <chris.mason@...cle.com>
Cc: Rik Riel <riel@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 mm/cleancache.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/cleancache.c b/mm/cleancache.c
index deb9f2c..5646c74 100644
--- a/mm/cleancache.c
+++ b/mm/cleancache.c
@@ -25,14 +25,14 @@
  * disabled), so is preferred to the slower alternative: a function
  * call that checks a non-global.
  */
-int cleancache_enabled;
+int cleancache_enabled __read_mostly;
 EXPORT_SYMBOL(cleancache_enabled);
 
 /*
  * cleancache_ops is set by cleancache_ops_register to contain the pointers
  * to the cleancache "backend" implementation functions.
  */
-static struct cleancache_ops cleancache_ops;
+static struct cleancache_ops cleancache_ops __read_mostly;
 
 /*
  * Counters available via /sys/kernel/debug/frontswap (if debugfs is
-- 
1.7.7.4

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