linux-kernel - Re: [PATCH v12 09/11] mm: Allow arch code to override copy

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Date:   Mon, 5 Mar 2018 11:24:14 -0800
From:   Dave Hansen <dave.hansen@...ux.intel.com>
To:     Khalid Aziz <khalid.aziz@...cle.com>, akpm@...ux-foundation.org,
        davem@...emloft.net
Cc:     kstewart@...uxfoundation.org, pombredanne@...b.com,
        tglx@...utronix.de, anthony.yznaga@...cle.com,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, sparclinux@...r.kernel.org,
        Khalid Aziz <khalid@...ehiking.org>
Subject: Re: [PATCH v12 09/11] mm: Allow arch code to override copy_highpage()

On 02/21/2018 09:15 AM, Khalid Aziz wrote:
> +#ifndef __HAVE_ARCH_COPY_HIGHPAGE
> +
>  static inline void copy_highpage(struct page *to, struct page *from)
>  {
>  	char *vfrom, *vto;
> @@ -248,4 +250,6 @@ static inline void copy_highpage(struct page *to, struct page *from)
>  	kunmap_atomic(vfrom);
>  }
>  
> +#endif

I think we prefer that these are CONFIG_* options.