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Message-Id: <20210608172544.d9bf17549565d866fbb18451@linux-foundation.org>
Date:   Tue, 8 Jun 2021 17:25:44 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Jonathan Corbet <corbet@....net>,
        Matt Turner <mattst88@...il.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Richard Henderson <rth@...ddle.net>,
        Vineet Gupta <vgupta@...opsys.com>, kexec@...ts.infradead.org,
        linux-alpha@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
        linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-m68k@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-mm@...ck.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
        linux-snps-arc@...ts.infradead.org, linux-xtensa@...ux-xtensa.org,
        linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH v3 8/9] mm: replace CONFIG_NEED_MULTIPLE_NODES with
 CONFIG_NUMA

On Tue,  8 Jun 2021 12:13:15 +0300 Mike Rapoport <rppt@...nel.org> wrote:

> From: Mike Rapoport <rppt@...ux.ibm.com>
> 
> After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA
> configuration options are equivalent.
> 
> Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead.
> 
> Done with
> 
> 	$ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \
> 		$(git grep -wl CONFIG_NEED_MULTIPLE_NODES)
> 	$ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \
> 		$(git grep -wl NEED_MULTIPLE_NODES)
> 
> with manual tweaks afterwards.
> 
> ...
>
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -987,7 +987,7 @@ extern int movable_zone;
>  #ifdef CONFIG_HIGHMEM
>  static inline int zone_movable_is_highmem(void)
>  {
> -#ifdef CONFIG_NEED_MULTIPLE_NODES
> +#ifdef CONFIG_NUMA
>  	return movable_zone == ZONE_HIGHMEM;
>  #else
>  	return (ZONE_MOVABLE - 1) == ZONE_HIGHMEM;

I dropped this hunk - your "mm/mmzone.h: simplify is_highmem_idx()"
removed zone_movable_is_highmem().  

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