linux-kernel - Re: [PATCH 2/5] hugetlb: drop prev_vma in hugetlb_get_unmapped_area

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Message-ID: <4F581962.8040403@linux.vnet.ibm.com>
Date:	Thu, 08 Mar 2012 10:28:50 +0800
From:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	William Irwin <wli@...omorphy.com>, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/5] hugetlb: drop prev_vma in hugetlb_get_unmapped_area_topdown

On 03/08/2012 06:01 AM, Andrew Morton wrote:

> On Fri, 13 Jan 2012 19:44:53 +0800
> Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com> wrote:
> 
>> Afte call find_vma_prev(mm, addr, &prev_vma), following condition is always
>> true:
>> 	!prev_vma || (addr >= prev_vma->vm_end)
>> it can be happily drop prev_vma and use find_vma instead of find_vma_prev
> 
> I had to rework this patch due to 097d59106a8e4b ("vm: avoid using
> find_vma_prev() unnecessarily") in mainline.  Can you please check my
> handiwork?
> 


It looks good to me, thanks Andrew!

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