From 859f7ef142a956676cb387b90f18e2e71e959c68 Mon Sep 17 00:00:00 2001
From: Zhihui Zhang <zzhsuny@gmail.com>
Date: Thu, 18 Dec 2014 16:17:09 -0800
Subject: [PATCH] mm/mempolicy.c: remove unnecessary is_valid_nodemask()

When nodes is true, nsc->mask2 has already been filtered by nsc->mask1,
which has already factored in node_states[N_MEMORY].

Signed-off-by: Zhihui Zhang <zzhsuny@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
Reading git-format-patch failed