linux-kernel - Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM

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Date:	Sat, 13 Oct 2012 20:26:39 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v4

Hi Andi,

On Fri, Oct 12, 2012 at 7:53 AM, Andi Kleen <andi@...stfloor.org> wrote:
> diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
> index 2251648..c626a2a 100644
> --- a/include/linux/hugetlb.h
> +++ b/include/linux/hugetlb.h
> @@ -183,7 +183,13 @@ extern const struct file_operations hugetlbfs_file_operations;
>  extern const struct vm_operations_struct hugetlb_vm_ops;
>  struct file *hugetlb_file_setup(const char *name, unsigned long addr,
>                                 size_t size, vm_flags_t acct,
> -                               struct user_struct **user, int creat_flags);
> +                               struct user_struct **user, int creat_flags,
> +                               int page_size_log);
> +int hugetlb_get_quota(struct address_space *mapping, long delta);
> +void hugetlb_put_quota(struct address_space *mapping, long delta);
> +
> +int hugetlb_get_quota(struct address_space *mapping, long delta);
> +void hugetlb_put_quota(struct address_space *mapping, long delta);


For what to add(twice) hugetlb_get/put_quota?

Hillf
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