Re: [PATCH v2 04/10] mm, kfence: insert KFENCE hooks for SLAB

Christopher Lameter
2020-09-17T09:37:13Z

On Tue, 15 Sep 2020, Marco Elver wrote:

> @@ -3206,7 +3207,7 @@ static void *____cache_alloc_node(struct kmem_cache *cachep, gfp_t flags,
> }
>
> static __always_inline void *
> -slab_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
> +slab_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, size_t orig_size,
> unsigned long caller)
> {

The size of the object is available via a field in kmem_cache. And a
pointer to the current kmem_cache is already passed to the function. Why
is there a need to add an additional parameter?