diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 0eb7b868e1abfb5f64137ab5cf63beba5be98003..3edf7163b84fb08eb1cf85a5388706c0d7f0ca41 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2763,10 +2763,7 @@ static int cgroup_cfts_commit(struct cftype *cfts, bool is_add)
 	 */
 	update_before = cgroup_serial_nr_next;
 
-	mutex_unlock(&cgroup_mutex);
-
 	/* add/rm files for all cgroups created before */
-	rcu_read_lock();
 	css_for_each_descendant_pre(css, cgroup_css(root, ss)) {
 		struct cgroup *cgrp = css->cgroup;
 
@@ -2775,23 +2772,19 @@ static int cgroup_cfts_commit(struct cftype *cfts, bool is_add)
 
 		inode = cgrp->dentry->d_inode;
 		dget(cgrp->dentry);
-		rcu_read_unlock();
-
 		dput(prev);
 		prev = cgrp->dentry;
 
+		mutex_unlock(&cgroup_mutex);
 		mutex_lock(&inode->i_mutex);
 		mutex_lock(&cgroup_mutex);
 		if (cgrp->serial_nr < update_before && !cgroup_is_dead(cgrp))
 			ret = cgroup_addrm_files(cgrp, cfts, is_add);
-		mutex_unlock(&cgroup_mutex);
 		mutex_unlock(&inode->i_mutex);
-
-		rcu_read_lock();
 		if (ret)
 			break;
 	}
-	rcu_read_unlock();
+	mutex_unlock(&cgroup_mutex);
 	dput(prev);
 	deactivate_super(sb);
 	return ret;