From 7aae01fae5c7d96e737262b5ac1778ae4c2579ce Mon Sep 17 00:00:00 2001
From: Li Zefan <lizf@cn.fujitsu.com>
Date: Wed, 19 Nov 2008 15:36:48 -0800
Subject: [PATCH] --- yaml --- r: 119201 b: refs/heads/master c:
 33d283bef23132c48195eafc21449f8ba88fce6b h: refs/heads/master i:   119199:
 5e0b13182aaec20353173e326c3f5afa9bf912ac v: v3

---
 [refs]                | 2 +-
 trunk/kernel/cgroup.c | 7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 367d95470f9d..037102ffdbd9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ea7e743e49b94749fc739baaf160809ed279aeda
+refs/heads/master: 33d283bef23132c48195eafc21449f8ba88fce6b
diff --git a/trunk/kernel/cgroup.c b/trunk/kernel/cgroup.c
index 1a06be61dcd0..fe00b3b983a8 100644
--- a/trunk/kernel/cgroup.c
+++ b/trunk/kernel/cgroup.c
@@ -2039,10 +2039,13 @@ int cgroupstats_build(struct cgroupstats *stats, struct dentry *dentry)
 	struct cgroup *cgrp;
 	struct cgroup_iter it;
 	struct task_struct *tsk;
+
 	/*
-	 * Validate dentry by checking the superblock operations
+	 * Validate dentry by checking the superblock operations,
+	 * and make sure it's a directory.
 	 */
-	if (dentry->d_sb->s_op != &cgroup_ops)
+	if (dentry->d_sb->s_op != &cgroup_ops ||
+	    !S_ISDIR(dentry->d_inode->i_mode))
 		 goto err;
 
 	ret = 0;