diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 35eebd5510c2165c6f8daa2cef1fecab9187d6d0..358e77564e6f8b0b4c3964a36da48cc3051d6e73 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2497,7 +2497,6 @@ static int cgroup_rmdir(struct inode *unused_dir, struct dentry *dentry)
 	list_del(&cgrp->sibling);
 	spin_lock(&cgrp->dentry->d_lock);
 	d = dget(cgrp->dentry);
-	cgrp->dentry = NULL;
 	spin_unlock(&d->d_lock);
 
 	cgroup_d_remove_dir(d);