linux-kernel - Re: [PATCH] kexec: Remove the unnecessary conditional judgement to simplify the code logic

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Date:	Sat, 25 Jul 2015 17:11:31 +0800
From:	Minfei Huang <mhuang@...hat.com>
To:	vgoyal@...hat.com, Dave Young <dyoung@...hat.com>
Cc:	ebiederm@...ssion.com, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Minfei Huang <mnfhuang@...il.com>
Subject: Re: [PATCH] kexec: Remove the unnecessary conditional judgement to
 simplify the code logic

Hi, Vivek.

Since Dave acked this patch, Could you help to merge it?

Thanks
Minfei

On 06/15/15 at 05:28pm, Dave Young wrote:
> On 06/06/15 at 02:14pm, Minfei Huang wrote:
> > From: Minfei Huang <mnfhuang@...il.com>
> > 
> > Transforming PFN(Page Frame Number) to struct page is never failure, so
> > we can simplify the code logic to do the image->control_page assignment
> > directly in the loop, and remove the unnecessary conditional judgement.
> > 
> > Signed-off-by: Minfei Huang <mnfhuang@...il.com>
> > ---
> >  kernel/kexec.c | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> > 
> > diff --git a/kernel/kexec.c b/kernel/kexec.c
> > index 7a36fdc..4589899 100644
> > --- a/kernel/kexec.c
> > +++ b/kernel/kexec.c
> > @@ -796,11 +796,10 @@ static struct page *kimage_alloc_crash_control_pages(struct kimage *image,
> >  		/* If I don't overlap any segments I have found my hole! */
> >  		if (i == image->nr_segments) {
> >  			pages = pfn_to_page(hole_start >> PAGE_SHIFT);
> > +			image->control_page = hole_end;
> >  			break;
> >  		}
> >  	}
> > -	if (pages)
> > -		image->control_page = hole_end;
> >  
> >  	return pages;
> >  }
> 
> Acked-by: Dave Young <dyoung@...hat.com>
> 
> Thanks
> Dave
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