diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 3e991c0..1535af3 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -50,7 +50,6 @@
 #include <linux/time.h>
 #include <linux/backing-dev.h>
 #include <linux/sort.h>
-#include <linux/task_ref.h>
 
 #include <asm/uaccess.h>
 #include <asm/atomic.h>
@@ -2443,7 +2442,7 @@
  */
 static int proc_cpuset_show(struct seq_file *m, void *v)
 {
-	struct task_ref *tref;
+	struct pid *pid;
 	struct task_struct *tsk;
 	char *buf;
 	int retval;
@@ -2454,8 +2453,8 @@
 		goto out;
 
 	retval = -ESRCH;
-	tref = m->private;
-	tsk = get_tref_task(tref);
+	pid = m->private;
+	tsk = get_pid_task(pid, PIDTYPE_PID);
 	if (!tsk)
 		goto out_free;
 
@@ -2478,8 +2477,8 @@
 
 static int cpuset_open(struct inode *inode, struct file *file)
 {
-	struct task_ref *tref = PROC_I(inode)->tref;
-	return single_open(file, proc_cpuset_show, tref);
+	struct pid *pid = PROC_I(inode)->pid;
+	return single_open(file, proc_cpuset_show, pid);
 }
 
 struct file_operations proc_cpuset_operations = {