linux-kernel - Re: [patch 1/1] MM: detach_vmas_to_be

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Date:	Wed, 21 Feb 2007 21:59:03 +0100
From:	Ingo Oeser <ioe-lkml@...eria.de>
To:	akuster@...sta.com
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org
Subject: Re: [patch 1/1] MM:  detach_vmas_to_be_unmapped fix

Hi,

On Wednesday, 21. February 2007, akuster@...sta.com wrote:
> 
> ---
> 
>  mm/mmap.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff -puN mm/mmap.c~Avoiding-mmap-fragmentation_fixup mm/mmap.c
> --- linux-2.6_clean/mm/mmap.c~Avoiding-mmap-fragmentation_fixup	2007-02-21 09:49:32.000000000 -0800
> +++ linux-2.6_clean-akuster/mm/mmap.c	2007-02-21 09:51:26.000000000 -0800
> @@ -1720,9 +1720,9 @@ detach_vmas_to_be_unmapped(struct mm_str
>  	*insertion_point = vma;
>  	tail_vma->vm_next = NULL;
>  	if (mm->unmap_area == arch_unmap_area)
> -		addr = prev ? prev->vm_end : mm->mmap_base;
> +		addr = prev ? prev->vm_start : mm->mmap_base;
>  	else
> -		addr = vma ?  vma->vm_start : mm->mmap_base;
> +		addr = vma ?  vma->vm_end : mm->mmap_base;
>  	mm->unmap_area(mm, addr);
>  	mm->mmap_cache = NULL;		/* Kill the cache. */
>  }

Please comment, why you think this is necessary.


Thanks & Regards

Ingo Oeser
-
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