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From: Cong Wang <xiyou.wangcong@gmail.com>
Subject: Re: [RFC PATCH 1/4] mm: introduce a safer interface to check
 whether a page is managed by SLxB
Date: Tue, 3 Jul 2012 09:56:45 +0000 (UTC)
Message-ID: <jsufks$tnk$1@dough.gmane.org>
References: <1341287837-7904-1-git-send-email-jiang.liu@huawei.com>
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Cc: linux-kernel@vger.kernel.org

On Tue, 03 Jul 2012 at 03:57 GMT, Jiang Liu <jiang.liu@huawei.com> wrote:
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -18,6 +18,7 @@
>  #include <linux/initrd.h>
>  #include <linux/of_fdt.h>
>  #include <linux/highmem.h>
> +#include <linux/huge_mm.h>
>  #include <linux/gfp.h>
>  #include <linux/memblock.h>
>  #include <linux/dma-contiguous.h>
> @@ -116,7 +117,7 @@ void show_mem(unsigned int filter)
>  				reserved++;
>  			else if (PageSwapCache(page))
>  				cached++;
> -			else if (PageSlab(page))
> +			else if (page_managed_by_slab(page))
>  				slab++;

slab.h should #include <linux/huge_mm.h>, not each C source file calls
page_managed_by_slab().

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