linux-kernel - Re: [PATCH V3 2/2] powerpc/pseries: init fault_around

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Message-ID: <877g686fpb.fsf@rustcorp.com.au>
Date:	Tue, 29 Apr 2014 11:48:40 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-mm@...ck.org, linux-arch@...r.kernel.org, x86@...nel.org
Cc:	benh@...nel.crashing.org, paulus@...ba.org,
	kirill.shutemov@...ux.intel.com, akpm@...ux-foundation.org,
	riel@...hat.com, mgorman@...e.de, ak@...ux.intel.com,
	peterz@...radead.org, mingo@...nel.org, dave.hansen@...el.com,
	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
Subject: Re: [PATCH V3 2/2] powerpc/pseries: init fault_around_order for pseries

Madhavan Srinivasan <maddy@...ux.vnet.ibm.com> writes:
> diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
> index 2db8cc6..c87e6b6 100644
> --- a/arch/powerpc/platforms/pseries/setup.c
> +++ b/arch/powerpc/platforms/pseries/setup.c
> @@ -74,6 +74,8 @@ int CMO_SecPSP = -1;
>  unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K);
>  EXPORT_SYMBOL(CMO_PageSize);
>  
> +extern unsigned int fault_around_order;
> +

It's considered bad form to do this.  Put the declaration in linux/mm.h.

Thanks,
Rusty.
PS.  But we're getting there! :)
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