linux-kernel - Re: [PATCH] mm/bootmem.c: remove unused 'limit' variable

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Message-ID: <528E83B6.5040107@intel.com>
Date:	Thu, 21 Nov 2013 14:05:42 -0800
From:	Dave Hansen <dave.hansen@...el.com>
To:	Luiz Capitulino <lcapitulino@...hat.com>,
	linux-kernel@...r.kernel.org
CC:	linux-mm@...ck.org, akpm@...ux-foundation.org
Subject: Re: [PATCH] mm/bootmem.c: remove unused 'limit' variable

On 11/21/2013 01:43 PM, Luiz Capitulino wrote:
> @@ -655,9 +655,7 @@ restart:
>  void * __init __alloc_bootmem_nopanic(unsigned long size, unsigned long align,
>  					unsigned long goal)
>  {
> -	unsigned long limit = 0;
> -
> -	return ___alloc_bootmem_nopanic(size, align, goal, limit);
> +	return ___alloc_bootmem_nopanic(size, align, goal, 0);
>  }

FWIW, I like those.  The way you leave it:

	return ___alloc_bootmem_nopanic(size, align, goal, 0);

the 0 is a magic number that you have to go look up the declaration of
___alloc_bootmem_nopanic() to decipher, or you have to add a comment to
it in some way.

I find it much more readable to have an 'unused' variable like that.
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