From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Thu, 8 Jan 2009 02:07:45 +0000 (-0800)
Subject: devcgroup: use list_for_each_entry_rcu()
X-Git-Tag: firefly_0821_release~16042
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=116e05751285c20edf5768ca3bcc00dad86181bb;p=firefly-linux-kernel-4.4.55.git

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@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 5ba78701adc3..cd377b9082b5 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))