diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 5f134a0..b303dfc 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -3883,8 +3883,12 @@
 {
 	struct cgroup_subsys_state *css =
 		container_of(work, struct cgroup_subsys_state, dput_work);
+	struct dentry *dentry = css->cgroup->dentry;
+	struct super_block *sb = dentry->d_sb;
 
-	dput(css->cgroup->dentry);
+	atomic_inc(&sb->s_active);
+	dput(dentry);
+	deactivate_super(sb);
 }
 
 static void init_cgroup_css(struct cgroup_subsys_state *css,