linux-kernel - Re: [PATCH] kdump: kill redundant code

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Message-ID: <20111109152012.GA12537@redhat.com>
Date:	Wed, 9 Nov 2011 10:20:13 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Dave Young <dyoung@...hat.com>
Cc:	ebiederm@...ssion.com, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kdump: kill redundant code

On Wed, Nov 09, 2011 at 03:04:52PM +0800, Dave Young wrote:
> in while loop below, hole_end > crashk_res.end is impossible:
> while (hole_end <= crashk_res.end) {
> 	[snip]
> }
> Killing the check code here
> 
> Signed-off-by: Dave Young <dyoung@...hat.com>

Makes sense.

Acked-by: Vivek Goyal <vgoyal@...hat.com>

Vivek

> ---
>  kernel/kexec.c |    2 --
>  1 file changed, 2 deletions(-)
> 
> --- linux-2.6.orig/kernel/kexec.c	2011-11-01 13:06:20.000000000 +0800
> +++ linux-2.6/kernel/kexec.c	2011-11-09 14:57:17.487022644 +0800
> @@ -500,8 +500,6 @@ static struct page *kimage_alloc_crash_c
>  
>  		if (hole_end > KEXEC_CRASH_CONTROL_MEMORY_LIMIT)
>  			break;
> -		if (hole_end > crashk_res.end)
> -			break;
>  		/* See if I overlap any of the segments */
>  		for (i = 0; i < image->nr_segments; i++) {
>  			unsigned long mstart, mend;
--
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