linux-kernel - Re: [RFC][PATCH v2 21/23] (um) __vmalloc: add gfp flags variant of pte and pmd allocation

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Date:	Mon, 14 Mar 2011 23:26:58 +0100
From:	richard -rw- weinberger <richard.weinberger@...il.com>
To:	Prasad Joshi <prasadjoshi124@...il.com>
Cc:	Jeff Dike <jdike@...toit.com>, Tejun Heo <tj@...nel.org>,
	user-mode-linux-devel@...ts.sourceforge.net,
	UML Mailing List <user-mode-linux-user@...ts.sourceforge.net>,
	Anand Mitra <mitra@...nfotech.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-arch@...r.kernel.org
Subject: Re: [RFC][PATCH v2 21/23] (um) __vmalloc: add gfp flags variant of
 pte and pmd allocation

On Mon, Mar 14, 2011 at 7:12 PM, Prasad Joshi <prasadjoshi124@...il.com> wrote:
> diff --git a/arch/um/include/asm/pgalloc.h b/arch/um/include/asm/pgalloc.h
> index 32c8ce4..8b6257e 100644
> --- a/arch/um/include/asm/pgalloc.h
> +++ b/arch/um/include/asm/pgalloc.h
> @@ -27,6 +27,7 @@ extern pgd_t *pgd_alloc(struct mm_struct *);
>  extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
>
>  extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
> +extern pte_t *__pte_alloc_one_kernel(struct mm_struct *, unsigned long, gfp_t);
>  extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);
>
>  static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
> diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
> index 8137ccc..e4caf17 100644
> --- a/arch/um/kernel/mem.c
> +++ b/arch/um/kernel/mem.c
> @@ -284,12 +284,15 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd)
>    free_page((unsigned long) pgd);
>  }
>
> -pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
> +pte_t *
> +__pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address,
> gfp_t gfp_mask)
>  {
> -   pte_t *pte;
> +   return (pte_t *)__get_free_page(gfp_mask | __GFP_ZERO);
> +}
>
> -   pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
> -   return pte;
> +pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
> +{
> +   return __pte_alloc_one_kernel(mm, address, GFP_KERNEL | __GFP_REPEAT);
>  }
>
>  pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
> @@ -303,15 +306,21 @@ pgtable_t pte_alloc_one(struct mm_struct *mm,
> unsigned long address)
>  }
>
>  #ifdef CONFIG_3_LEVEL_PGTABLES
> -pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
> +pmd_t *
> +__pmd_alloc_one(struct mm_struct *mm, unsigned long address, gfp_t gfp_mask)
>  {
> -   pmd_t *pmd = (pmd_t *) __get_free_page(GFP_KERNEL);
> +   pmd_t *pmd = (pmd_t *) __get_free_page(gfp_mask);
>
>    if (pmd)
>        memset(pmd, 0, PAGE_SIZE);
>
>    return pmd;
>  }
> +
> +pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
> +{
> +   return __pmd_alloc_one(mm, address, GFP_KERNEL);
> +}
>  #endif
>
>  void *uml_kmalloc(int size, int flags)
> --
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>

Sorry, this patch seems damaged.

-- 
Thanks,
//richard
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