Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37;
Date:   Wed, 6 Dec 2023 18:10:11 +0900
From:   Hyeonggon Yoo <42.hyeyoo@gmail.com>
To:     Vlastimil Babka <vbabka@suse.cz>
Cc:     David Rientjes <rientjes@google.com>,
        Christoph Lameter <cl@linux.com>,
        Pekka Enberg <penberg@kernel.org>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        Alexander Potapenko <glider@google.com>,
        Andrey Konovalov <andreyknvl@gmail.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Vincenzo Frascino <vincenzo.frascino@arm.com>,
        Marco Elver <elver@google.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Michal Hocko <mhocko@kernel.org>,
        Shakeel Butt <shakeelb@google.com>,
        Muchun Song <muchun.song@linux.dev>,
        Kees Cook <keescook@chromium.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
        cgroups@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: [PATCH v2 08/21] mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB
 ifdefs
Message-ID: <ZXA6cwJbnayb6KA/@localhost.localdomain>
References: <20231120-slab-remove-slab-v2-0-9c9c70177183@suse.cz>
 <20231120-slab-remove-slab-v2-8-9c9c70177183@suse.cz>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20231120-slab-remove-slab-v2-8-9c9c70177183@suse.cz>
Precedence: bulk

On Mon, Nov 20, 2023 at 07:34:19PM +0100, Vlastimil Babka wrote:
> CONFIG_DEBUG_SLAB is going away with CONFIG_SLAB, so remove dead ifdefs
> in mempool and dmapool code.
> 
> Reviewed-by: Kees Cook <keescook@chromium.org>
> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
> ---
>  mm/dmapool.c | 2 +-
>  mm/mempool.c | 6 +++---
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/mm/dmapool.c b/mm/dmapool.c
> index a151a21e571b..f0bfc6c490f4 100644
> --- a/mm/dmapool.c
> +++ b/mm/dmapool.c
> @@ -36,7 +36,7 @@
>  #include <linux/types.h>
>  #include <linux/wait.h>
>  
> -#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB_DEBUG_ON)
> +#ifdef CONFIG_SLUB_DEBUG_ON
>  #define DMAPOOL_DEBUG 1
>  #endif
>  
> diff --git a/mm/mempool.c b/mm/mempool.c
> index 734bcf5afbb7..4759be0ff9de 100644
> --- a/mm/mempool.c
> +++ b/mm/mempool.c
> @@ -20,7 +20,7 @@
>  #include <linux/writeback.h>
>  #include "slab.h"
>  
> -#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB_DEBUG_ON)
> +#ifdef CONFIG_SLUB_DEBUG_ON
>  static void poison_error(mempool_t *pool, void *element, size_t size,
>  			 size_t byte)
>  {
> @@ -95,14 +95,14 @@ static void poison_element(mempool_t *pool, void *element)
>  		kunmap_atomic(addr);
>  	}
>  }
> -#else /* CONFIG_DEBUG_SLAB || CONFIG_SLUB_DEBUG_ON */
> +#else /* CONFIG_SLUB_DEBUG_ON */
>  static inline void check_element(mempool_t *pool, void *element)
>  {
>  }
>  static inline void poison_element(mempool_t *pool, void *element)
>  {
>  }
> -#endif /* CONFIG_DEBUG_SLAB || CONFIG_SLUB_DEBUG_ON */
> +#endif /* CONFIG_SLUB_DEBUG_ON */

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

>  
>  static __always_inline void kasan_poison_element(mempool_t *pool, void *element)
>  {
> 
> -- 
> 2.42.1
> 
>