linux-kernel - Re: [PATCH] mm/huge_memory.c: Make __thp_get_unmapped

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Date:   Sat, 4 May 2019 07:54:46 -0400
From:   Michal Hocko <mhocko@...nel.org>
To:     Bharath Vedartham <linux.bhar@...il.com>
Cc:     akpm@...ux-foundation.org, kirill.shutemov@...ux.intel.com,
        vbabka@...e.cz, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/huge_memory.c: Make __thp_get_unmapped_area static

On Sat 04-05-19 15:53:54, Bharath Vedartham wrote:
> __thp_get_unmapped_area is only used in mm/huge_memory.c. Make it
> static.

Makes sense. Looks like an omission.

> Tested by building and booting the kernel.

Testing by git grep __thp_get_unmapped_area would give you a better
picture. Build test migh not hit paths that are config specific and
static aspect of a functions should not have any functionality related
side effects AFAICS.
 
> Signed-off-by: Bharath Vedartham <linux.bhar@...il.com>

Acked-by: Michal Hocko <mhocko@...e.com>

> ---
>  mm/huge_memory.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 165ea46..75fe2b7 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -509,7 +509,7 @@ void prep_transhuge_page(struct page *page)
>  	set_compound_page_dtor(page, TRANSHUGE_PAGE_DTOR);
>  }
>  
> -unsigned long __thp_get_unmapped_area(struct file *filp, unsigned long len,
> +static unsigned long __thp_get_unmapped_area(struct file *filp, unsigned long len,
>  		loff_t off, unsigned long flags, unsigned long size)
>  {
>  	unsigned long addr;
> -- 
> 2.7.4
> 

-- 
Michal Hocko
SUSE Labs