Re: [PATCH 07/20] mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB ifdefs

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On Mon, Nov 13, 2023 at 08:13:48PM +0100, Vlastimil Babka wrote:
> CONFIG_DEBUG_SLAB is going away with CONFIG_SLAB, so remove dead ifdefs
> in mempool and dmapool code.
> 
> Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
> ---
>  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..62dcbeb4c2a9 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 */

nit: space after "*"

With that fixed:

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

-- 
Kees Cook




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