diff --git a/[refs] b/[refs]
index b141293840e6..030c24b01bb1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 53a7706d5ed8f1a53ba062b318773160cc476dde
+refs/heads/master: 1e50df39f6e2c3a4a3394df62baa8a213df16c54
diff --git a/trunk/mm/mempolicy.c b/trunk/mm/mempolicy.c
index 7ee55af8d79c..e6d351265aed 100644
--- a/trunk/mm/mempolicy.c
+++ b/trunk/mm/mempolicy.c
@@ -1310,16 +1310,13 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode,
 
 	/* Find the mm_struct */
 	rcu_read_lock();
-	read_lock(&tasklist_lock);
 	task = pid ? find_task_by_vpid(pid) : current;
 	if (!task) {
-		read_unlock(&tasklist_lock);
 		rcu_read_unlock();
 		err = -ESRCH;
 		goto out;
 	}
 	mm = get_task_mm(task);
-	read_unlock(&tasklist_lock);
 	rcu_read_unlock();
 
 	err = -EINVAL;