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From: Jiang Liu <jiang.liu@linux.intel.com>
Subject: [Patch V3 3/9] sgi-xp: Replace cpu_to_node() with cpu_to_mem() to support memoryless node
Date: Mon, 17 Aug 2015 11:19:00 +0800
Message-Id: <1439781546-7217-4-git-send-email-jiang.liu@linux.intel.com>
In-Reply-To: <1439781546-7217-1-git-send-email-jiang.liu@linux.intel.com>
References: <1439781546-7217-1-git-send-email-jiang.liu@linux.intel.com>
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To: Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mgorman@suse.de>, David Rientjes <rientjes@google.com>, Mike Galbraith <umgwanakikbuti@gmail.com>, Peter Zijlstra <peterz@infradead.org>, "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>, Tang Chen <tangchen@cn.fujitsu.com>, Tejun Heo <tj@kernel.org>, Cliff Whickman <cpw@sgi.com>, Robin Holt <robinmholt@gmail.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>, Tony Luck <tony.luck@intel.com>, linux-mm@kvack.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org

Function xpc_create_gru_mq_uv() allocates memory with __GFP_THISNODE
flag set, which may cause permanent memory allocation failure on
memoryless node. So replace cpu_to_node() with cpu_to_mem() to better
support memoryless node. For node with memory, cpu_to_mem() is the same
as cpu_to_node().

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
---
 drivers/misc/sgi-xp/xpc_uv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index 95c894482fdd..9210981c0d5b 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -238,7 +238,7 @@ xpc_create_gru_mq_uv(unsigned int mq_size, int cpu, char *irq_name,
 
 	mq->mmr_blade = uv_cpu_to_blade_id(cpu);
 
-	nid = cpu_to_node(cpu);
+	nid = cpu_to_mem(cpu);
 	page = alloc_pages_exact_node(nid,
 				      GFP_KERNEL | __GFP_ZERO | __GFP_THISNODE,
 				      pg_order);
-- 
1.7.10.4

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