linux-kernel - [PATCH 2/3] devm_memremap_pages: use numa_mem

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Message-ID: <20150926011747.2848.12543.stgit@dwillia2-desk3.jf.intel.com>
Date:	Fri, 25 Sep 2015 21:17:47 -0400
From:	Dan Williams <dan.j.williams@...el.com>
To:	tj@...nel.org
Cc:	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	linux-nvdimm@...ts.01.org, hch@....de, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] devm_memremap_pages: use numa_mem_id

Hint to closest numa node for the placement of newly allocated pages.
As that is where the device's other allocations will originate by
default when it does not specify a NUMA node.

Cc: Christoph Hellwig <hch@....de>
Cc: Ross Zwisler <ross.zwisler@...ux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 kernel/memremap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/memremap.c b/kernel/memremap.c
index 72b0c66628b6..86a5cdeb18f2 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -175,7 +175,7 @@ void *devm_memremap_pages(struct device *dev, struct resource *res)
 
 	nid = dev_to_node(dev);
 	if (nid < 0)
-		nid = 0;
+		nid = numa_mem_id();
 
 	error = arch_add_memory(nid, res->start, resource_size(res), true);
 	if (error) {

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