linux-kernel - Re: [patch 01/17] hugetlb: modular state

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Date:	Mon, 21 Apr 2008 15:51:24 -0500
From:	Jon Tollefson <kniht@...ux.vnet.ibm.com>
To:	npiggin@...e.de
Cc:	akpm@...ux-foundation.org, Andi Kleen <ak@...e.de>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, pj@....com,
	andi@...stfloor.org, kniht@...ux.vnet.ibm.com
Subject: Re: [patch 01/17] hugetlb: modular state


On Fri, 2008-04-11 at 03:02 +1000, npiggin@...e.de wrote:

<snip>

> Index: linux-2.6/include/linux/hugetlb.h
> ===================================================================
> --- linux-2.6.orig/include/linux/hugetlb.h
> +++ linux-2.6/include/linux/hugetlb.h
> @@ -40,7 +40,7 @@ extern int sysctl_hugetlb_shm_group;
> 
>  /* arch callbacks */
> 
> -pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr);
> +pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, int sz);

<snip>

The sz here needs to be a long to handle sizes such as 16G on powerpc.

There are other places in hugetlb.c where the size also needs to be a
long, but this one affects the arch code too since it is public.

Jon
Tollefson


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