Re: [PATCH] powerpc: drop page_is_ram() and walk_system_ram_range()

From: Christoph Hellwig
Date: Fri Feb 01 2019 - 03:35:43 EST


On Thu, Jan 31, 2019 at 07:28:49PM +0000, Christophe Leroy wrote:
> Since commit c40dd2f76644 ("powerpc: Add System RAM to /proc/iomem")
> it is possible to use the generic walk_system_ram_range() and
> the generic page_is_ram().
>
> Fixes: c40dd2f76644 ("powerpc: Add System RAM to /proc/iomem")
> Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
> ---
> arch/powerpc/Kconfig | 3 ---
> arch/powerpc/include/asm/page.h | 1 -
> arch/powerpc/mm/mem.c | 33 ---------------------------------
> 3 files changed, 37 deletions(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 0a26e0075ce5..0006ca6a7664 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -479,9 +479,6 @@ config ARCH_CPU_PROBE_RELEASE
> config ARCH_ENABLE_MEMORY_HOTPLUG
> def_bool y
>
> -config ARCH_HAS_WALK_MEMORY
> - def_bool y

powerpc was the last architecture to define ARCH_HAS_WALK_MEMORY,
so the symbol can be removed now.