--- zzzz-none-000/linux-3.10.107/include/linux/slub_def.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/include/linux/slub_def.h	2021-11-10 11:53:56.000000000 +0000
@@ -137,7 +137,8 @@
 extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order);
 #else
 static __always_inline void *
-kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
+kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags,
+		       size_t size __maybe_unused)
 {
 	return kmem_cache_alloc(s, gfpflags);
 }