linux-kernel - Re: [PATCH] mm: Remove default DISCONTIGMEM

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Date:   Wed, 17 Mar 2021 14:22:42 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Mike Rapoport <rppt@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: Remove default DISCONTIGMEM_MANUAL

On 12.03.21 15:12, Geert Uytterhoeven wrote:
> Commit 214496cb18700fd7 ("ia64: make SPARSEMEM default and disable
> DISCONTIGMEM") removed the last enabler of ARCH_DISCONTIGMEM_DEFAULT,
> hence the memory model can no longer default to DISCONTIGMEM_MANUAL.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
> DISCONTIGMEM_MANUAL depends on ARCH_DISCONTIGMEM_ENABLE, which in turns
> depends on BROKEN, so probably all discontig memory support can be
> removed, too?
> ---
>   mm/Kconfig | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 24c045b24b95069b..579254f10fb1bac6 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -9,7 +9,6 @@ config SELECT_MEMORY_MODEL
>   choice
>   	prompt "Memory model"
>   	depends on SELECT_MEMORY_MODEL
> -	default DISCONTIGMEM_MANUAL if ARCH_DISCONTIGMEM_DEFAULT
>   	default SPARSEMEM_MANUAL if ARCH_SPARSEMEM_DEFAULT
>   	default FLATMEM_MANUAL
>   	help
> 

Reviewed-by: David Hildenbrand <david@...hat.com>

-- 
Thanks,

David / dhildenb