Re: [PATCH v2 04/21] KFENCE: cleanup kfence_guarded_alloc() after CONFIG_SLAB removal

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On Mon, Nov 20, 2023 at 07:34:15PM +0100, Vlastimil Babka wrote:
> Some struct slab fields are initialized differently for SLAB and SLUB so
> we can simplify with SLUB being the only remaining allocator.
> 
> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
> Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
> Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
> ---
>  mm/kfence/core.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/mm/kfence/core.c b/mm/kfence/core.c
> index 3872528d0963..8350f5c06f2e 100644
> --- a/mm/kfence/core.c
> +++ b/mm/kfence/core.c
> @@ -463,11 +463,7 @@ static void *kfence_guarded_alloc(struct kmem_cache *cache, size_t size, gfp_t g
>  	/* Set required slab fields. */
>  	slab = virt_to_slab((void *)meta->addr);
>  	slab->slab_cache = cache;
> -#if defined(CONFIG_SLUB)
>  	slab->objects = 1;
> -#elif defined(CONFIG_SLAB)
> -	slab->s_mem = addr;
> -#endif
>  
>  	/* Memory initialization. */
>  	set_canary(meta);

Looks good to me,
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>

> 
> -- 
> 2.42.1
> 
> 




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