diff --git a/include/linux/slob_def.h b/include/linux/slob_def.h
index 0ec00b39d006471e585a11e74759ff832f6f028b..62667f72c2ef795c128b58d75a141e65beb16a35 100644
--- a/include/linux/slob_def.h
+++ b/include/linux/slob_def.h
@@ -1,6 +1,14 @@
 #ifndef __LINUX_SLOB_DEF_H
 #define __LINUX_SLOB_DEF_H
 
+#ifndef ARCH_KMALLOC_MINALIGN
+#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long)
+#endif
+
+#ifndef ARCH_SLAB_MINALIGN
+#define ARCH_SLAB_MINALIGN __alignof__(unsigned long)
+#endif
+
 void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
 
 static __always_inline void *kmem_cache_alloc(struct kmem_cache *cachep,
diff --git a/mm/slob.c b/mm/slob.c
index 837ebd64cc346875c9f84f2d87ac4b149c137755..23631e2bb57af43c5cb577a75323cc9768798016 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -467,14 +467,6 @@ static void slob_free(void *block, int size)
  * End of slob allocator proper. Begin kmem_cache_alloc and kmalloc frontend.
  */
 
-#ifndef ARCH_KMALLOC_MINALIGN
-#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long)
-#endif
-
-#ifndef ARCH_SLAB_MINALIGN
-#define ARCH_SLAB_MINALIGN __alignof__(unsigned long)
-#endif
-
 void *__kmalloc_node(size_t size, gfp_t gfp, int node)
 {
 	unsigned int *m;