From 6e90b58be7545c2cb2306fa186ccf5888c76c559 Mon Sep 17 00:00:00 2001
From: Wang Nan <wangnan0@huawei.com>
Date: Wed, 6 Aug 2014 16:07:47 -0700
Subject: [PATCH] memory-hotplug: sh: suitable memory should go to ZONE_MOVABLE

This patch introduces zone_for_memory() to arch_add_memory() on sh to
ensure new, higher memory added into ZONE_MOVABLE if movable zone has
already setup.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: "Mel Gorman" <mgorman@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/sh/mm/init.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 2d089fe2cba9..2790b6a64157 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -495,8 +495,9 @@ int arch_add_memory(int nid, u64 start, u64 size)
 	pgdat = NODE_DATA(nid);
 
 	/* We only have ZONE_NORMAL, so this is easy.. */
-	ret = __add_pages(nid, pgdat->node_zones + ZONE_NORMAL,
-				start_pfn, nr_pages);
+	ret = __add_pages(nid, pgdat->node_zones +
+			zone_for_memory(nid, start, size, ZONE_NORMAL),
+			start_pfn, nr_pages);
 	if (unlikely(ret))
 		printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
 
-- 
2.20.1