linux-kernel - Re: [PATCH v3 01/14] mm: thp: make __split_huge_pmd

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Date:   Mon, 6 Feb 2017 07:02:24 -0800
From:   Matthew Wilcox <willy@...radead.org>
To:     Zi Yan <zi.yan@...t.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        kirill.shutemov@...ux.intel.com, akpm@...ux-foundation.org,
        minchan@...nel.org, vbabka@...e.cz, mgorman@...hsingularity.net,
        n-horiguchi@...jp.nec.com, khandual@...ux.vnet.ibm.com,
        zi.yan@...rutgers.edu, Zi Yan <ziy@...dia.com>
Subject: Re: [PATCH v3 01/14] mm: thp: make __split_huge_pmd_locked visible.

On Sun, Feb 05, 2017 at 11:12:39AM -0500, Zi Yan wrote:
> +++ b/include/linux/huge_mm.h
> @@ -120,6 +120,8 @@ static inline int split_huge_page(struct page *page)
>  }
>  void deferred_split_huge_page(struct page *page);
>  
> +void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
> +		unsigned long haddr, bool freeze);

Could you change that from 'haddr' to 'address' so callers who only
read the header instead of the implementation aren't expecting to align
it themselves?

> +void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
> +		unsigned long address, bool freeze)
>  {
>  	struct mm_struct *mm = vma->vm_mm;
>  	struct page *page;