numa_mem_id() is able to handle allocation from CPUs on memory-less nodes,
so it's a more robust fallback than the currently used numa_node_id().

Suggested-by: Christoph Lameter <c...@linux.com>
Signed-off-by: Vlastimil Babka <vba...@suse.cz>
Acked-by: David Rientjes <rient...@google.com>
Acked-by: Mel Gorman <mgor...@techsingularity.net>
---
 include/linux/gfp.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 4a12cae2..f92cbd2 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -318,13 +318,14 @@ __alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int 
order)
 
 /*
  * Allocate pages, preferring the node given as nid. When nid == NUMA_NO_NODE,
- * prefer the current CPU's node. Otherwise node must be valid and online.
+ * prefer the current CPU's closest node. Otherwise node must be valid and
+ * online.
  */
 static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask,
                                                unsigned int order)
 {
        if (nid == NUMA_NO_NODE)
-               nid = numa_node_id();
+               nid = numa_mem_id();
 
        return __alloc_pages_node(nid, gfp_mask, order);
 }
-- 
2.4.6

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