diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 07a9647..b23492e 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1110,12 +1110,12 @@
 		const unsigned long __user *old_nodes,
 		const unsigned long __user *new_nodes)
 {
+	struct cred *cred, *tcred;
 	struct mm_struct *mm;
 	struct task_struct *task;
 	nodemask_t old;
 	nodemask_t new;
 	nodemask_t task_nodes;
-	uid_t uid, euid;
 	int err;
 
 	err = get_nodes(&old, old_nodes, maxnode);
@@ -1145,10 +1145,10 @@
 	 * capabilities, superuser privileges or the same
 	 * userid as the target process.
 	 */
-	uid = current_uid();
-	euid = current_euid();
-	if (euid != task->suid && euid != task->uid &&
-	    uid  != task->suid && uid  != task->uid &&
+	cred = current->cred;
+	tcred = task->cred;
+	if (cred->euid != tcred->suid && cred->euid != tcred->uid &&
+	    cred->uid  != tcred->suid && cred->uid  != tcred->uid &&
 	    !capable(CAP_SYS_NICE)) {
 		err = -EPERM;
 		goto out;