linux-kernel - [PATCH tip/core/rcu 14/28] security,rcu: Convert call_rcu(whitelist_item_free) to kfree

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Message-Id: <1307561407-13809-14-git-send-email-paulmck@linux.vnet.ibm.com>
Date:	Wed,  8 Jun 2011 12:29:53 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com,
	patches@...aro.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	James Morris <jmorris@...ei.org>
Subject: [PATCH tip/core/rcu 14/28] security,rcu: Convert call_rcu(whitelist_item_free) to kfree_rcu()

From: Lai Jiangshan <laijs@...fujitsu.com>

The rcu callback whitelist_item_free() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(whitelist_item_free).

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: James Morris <jmorris@...ei.org>
Reviewed-by: Josh Triplett <josh@...htriplett.org>
---
 security/device_cgroup.c |   10 +---------
 1 files changed, 1 insertions(+), 9 deletions(-)

diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 8d9c48f..e886ab5 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -126,14 +126,6 @@ static int dev_whitelist_add(struct dev_cgroup *dev_cgroup,
 	return 0;
 }
 
-static void whitelist_item_free(struct rcu_head *rcu)
-{
-	struct dev_whitelist_item *item;
-
-	item = container_of(rcu, struct dev_whitelist_item, rcu);
-	kfree(item);
-}
-
 /*
  * called under devcgroup_mutex
  */
@@ -156,7 +148,7 @@ remove:
 		walk->access &= ~wh->access;
 		if (!walk->access) {
 			list_del_rcu(&walk->list);
-			call_rcu(&walk->rcu, whitelist_item_free);
+			kfree_rcu(walk, rcu);
 		}
 	}
 }
-- 
1.7.3.2

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