diff --git a/scst/include/backport.h b/scst/include/backport.h
index 5e6126d94..4be44cd88 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -704,30 +704,6 @@ static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
 }
 #endif
 
-/*
- * See also commit 8eb8284b4129 ("usercopy: Prepare for usercopy
- * whitelisting").
- */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23)
-static inline struct kmem_cache *kmem_cache_create_usercopy(const char *name,
-			unsigned int size, unsigned int align,
-			unsigned long flags,
-			unsigned int useroffset, unsigned int usersize,
-			void (*ctor)(void *))
-{
-	return kmem_cache_create(name, size, align, flags, ctor, NULL);
-}
-#elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 16, 0)
-static inline struct kmem_cache *kmem_cache_create_usercopy(const char *name,
-			unsigned int size, unsigned int align,
-			unsigned long flags,
-			unsigned int useroffset, unsigned int usersize,
-			void (*ctor)(void *))
-{
-	return kmem_cache_create(name, size, align, flags, ctor);
-}
-#endif
-
 /* <linux/t10-pi.h> */
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)