From cdea9364e477b40fa73dc8e39468ea1701221fec Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben.dooks@codethink.co.uk>
Date: Thu, 18 Jun 2026 11:06:14 +0100
Subject: [PATCH] mm/page_alloc: don't build vm_numa_stat_key if CONFIG_NUMA=n

vm_numa_stat_key is only exported if CONFIG_NUMA is set, so avoid the
following warning by guarding it in an #ifdef on CONFIG_NUMA:

mm/page_alloc.c:165:1: warning: symbol 'vm_numa_stat_key' was not declared. Should it be static?

Link: https://lore.kernel.org/20260618100614.1321950-1-ben.dooks@codethink.co.uk
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/page_alloc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ee902a468c2f..dbe632f6300d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -165,7 +165,9 @@ DEFINE_PER_CPU(int, numa_node);
 EXPORT_PER_CPU_SYMBOL(numa_node);
 #endif
 
+#ifdef CONFIG_NUMA
 DEFINE_STATIC_KEY_TRUE(vm_numa_stat_key);
+#endif
 
 #ifdef CONFIG_HAVE_MEMORYLESS_NODES
 /*