From eb75ca23302bed7303938529993f66444c70fd2e Mon Sep 17 00:00:00 2001
From: Michal Hocko <mhocko@suse.cz>
Date: Wed, 19 Jun 2013 10:06:14 +1000
Subject: [PATCH] 
 mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages-fix

Fix CONFIG_HIGHMEM=n build

Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/page_alloc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6f623f6d5c84..d711dcdda362 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6185,8 +6185,10 @@ __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn)
 		list_del(&page->lru);
 		rmv_page_order(page);
 		zone->free_area[order].nr_free--;
+#ifdef CONFIG_HIGHMEM
 		if (PageHighMem(page))
 			totalhigh_pages -= 1 << order;
+#endif
 		for (i = 0; i < (1 << order); i++)
 			SetPageReserved((page+i));
 		pfn += (1 << order);
-- 
2.39.5