Re: [PATCH] mm/mmap.c: Remove redundant local variables for may_expand_vm()

[Chen Gang <xili_gchen_5257@hotmail.com>]

Next, I shall read through another files.

I should not only send trivial patches to community, I should continue
learning mm. 

Until now, I did not spend enough time resources on mm. So next, I
should spend a little more my free time resources on mm.


Welcome any ideas, suggestions, and completions from any members.

Thanks.

On 11/10/15 05:41, Chen Gang wrote:
> From 7050c267d8dda220226067039d815593d2f9a874 Mon Sep 17 00:00:00 2001
> From: Chen Gang <gang.chen.5i5j@gmail.com>
> Date: Tue, 10 Nov 2015 05:32:38 +0800
> Subject: [PATCH] mm/mmap.c: Remove redundant local variables for may_expand_vm()
> 
> After merge the related code into one line, the code is still simple and
> meaningful enough.
> 
> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
> ---
>  mm/mmap.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/mm/mmap.c b/mm/mmap.c
> index 2ce04a6..a515260 100644
> --- a/mm/mmap.c
> +++ b/mm/mmap.c
> @@ -2988,12 +2988,7 @@ out:
>   */
>  int may_expand_vm(struct mm_struct *mm, unsigned long npages)
>  {
> -	unsigned long cur = mm->total_vm;	/* pages */
> -	unsigned long lim;
> -
> -	lim = rlimit(RLIMIT_AS)>> PAGE_SHIFT;
> -
> -	if (cur + npages> lim)
> +	if (mm->total_vm + npages> (rlimit(RLIMIT_AS)>> PAGE_SHIFT))
>  		return 0;
>  	return 1;
>  }
> -- 
> 1.9.3
> 
>  		 	   		  
> 

-- 
Chen Gang (陈刚)

Open, share, and attitude like air, water, and life which God blessed

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