Re: [PATCH] mm: memory-failure: correct HWPOISON_INJECT config

[Andrew Morton]

On Fri, 10 Mar 2023 21:38:43 +0800 Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:

> Use IS_ENABLED(CONFIG_HWPOISON_INJECT) to check whether or not to
> enable HWPoison injector module.

This is quite clear from the patch itself.  What is unclear is "why". 
Does it fix a build error?  If so, please describe and add a Fixes: if
appropriate.  Is it just a cleanup?  etcetera.

Thanks.

> --- a/mm/memory-failure.c
> +++ b/mm/memory-failure.c
> @@ -168,7 +168,7 @@ static bool page_handle_poison(struct page *page, bool hugepage_or_freepage, boo
>  	return true;
>  }
>  
> -#if defined(CONFIG_HWPOISON_INJECT) || defined(CONFIG_HWPOISON_INJECT_MODULE)
> +#if IS_ENABLED(CONFIG_HWPOISON_INJECT)
>  
>  u32 hwpoison_filter_enable = 0;
>  u32 hwpoison_filter_dev_major = ~0U;
> -- 
> 2.35.3