linux-kernel - [PATCH] devcgroup: use list_for_each_entry

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Message-ID: <49267614.5000505@cn.fujitsu.com>
Date:	Fri, 21 Nov 2008 16:49:24 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Paul Menage <menage@...gle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	Serge Hallyn <serue@...ibm.com>
Subject: [PATCH] devcgroup: use list_for_each_entry_rcu()

we should use list_for_each_entry_rcu in RCU read site.

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 5ba7870..cd377b9 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -517,7 +517,7 @@ int devcgroup_inode_mknod(int mode, dev_t dev)
 
 	dev_cgroup = task_devcgroup(current);
 
-	list_for_each_entry(wh, &dev_cgroup->whitelist, list) {
+	list_for_each_entry_rcu(wh, &dev_cgroup->whitelist, list) {
 		if (wh->type & DEV_ALL)
 			goto acc_check;
 		if ((wh->type & DEV_BLOCK) && !S_ISBLK(mode))

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