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: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/kernel/memremap.c b/kernel/memremap.c
index 0d818ce..56fc478 100644 (file)
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -174,7 +174,7 @@ 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) {