linux-kernel - Re: [PATCH 1/5] rename anon_vma_lock to vma_lock_anon

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Date:	Wed, 26 May 2010 16:33:12 -0400
From:	Larry Woodman <lwoodman@...hat.com>
To:	Rik van Riel <riel@...hat.com>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Mel Gorman <mel@....ul.ie>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Minchan Kim <minchan.kim@...il.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>
Subject: Re: [PATCH 1/5] rename anon_vma_lock to vma_lock_anon_vma

On Wed, 2010-05-26 at 15:38 -0400, Rik van Riel wrote:
> Subject: rename anon_vma_lock to vma_lock_anon_vma
> 
> Rename anon_vma_lock to vma_lock_anon_vma.  This matches the
> naming style used in page_lock_anon_vma and will come in really
> handy further down in this patch series.
> 
> Signed-off-by: Rik van Riel <riel@...hat.com>
> Acked-by: Mel Gorman <mel@....ul.ie>
> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

Tested and Acked-by: Larry Woodman <lwoodman@...hat.com>

> ---
>  include/linux/rmap.h |    4 ++--
>  mm/mmap.c            |   14 +++++++-------
>  2 files changed, 9 insertions(+), 9 deletions(-)
> 
> Index: linux-2.6.34/include/linux/rmap.h
> ===================================================================
> --- linux-2.6.34.orig/include/linux/rmap.h
> +++ linux-2.6.34/include/linux/rmap.h
> @@ -99,14 +99,14 @@ static inline struct anon_vma *page_anon
>  	return page_rmapping(page);
>  }
>  
> -static inline void anon_vma_lock(struct vm_area_struct *vma)
> +static inline void vma_lock_anon_vma(struct vm_area_struct *vma)
>  {
>  	struct anon_vma *anon_vma = vma->anon_vma;
>  	if (anon_vma)
>  		spin_lock(&anon_vma->lock);
>  }
>  
> -static inline void anon_vma_unlock(struct vm_area_struct *vma)
> +static inline void vma_unlock_anon_vma(struct vm_area_struct *vma)
>  {
>  	struct anon_vma *anon_vma = vma->anon_vma;
>  	if (anon_vma)
> Index: linux-2.6.34/mm/mmap.c
> ===================================================================
> --- linux-2.6.34.orig/mm/mmap.c
> +++ linux-2.6.34/mm/mmap.c
> @@ -452,12 +452,12 @@ static void vma_link(struct mm_struct *m
>  		spin_lock(&mapping->i_mmap_lock);
>  		vma->vm_truncate_count = mapping->truncate_count;
>  	}
> -	anon_vma_lock(vma);
> +	vma_lock_anon_vma(vma);
>  
>  	__vma_link(mm, vma, prev, rb_link, rb_parent);
>  	__vma_link_file(vma);
>  
> -	anon_vma_unlock(vma);
> +	vma_unlock_anon_vma(vma);
>  	if (mapping)
>  		spin_unlock(&mapping->i_mmap_lock);
>  
> @@ -1710,7 +1710,7 @@ int expand_upwards(struct vm_area_struct
>  	 */
>  	if (unlikely(anon_vma_prepare(vma)))
>  		return -ENOMEM;
> -	anon_vma_lock(vma);
> +	vma_lock_anon_vma(vma);
>  
>  	/*
>  	 * vma->vm_start/vm_end cannot change under us because the caller
> @@ -1721,7 +1721,7 @@ int expand_upwards(struct vm_area_struct
>  	if (address < PAGE_ALIGN(address+4))
>  		address = PAGE_ALIGN(address+4);
>  	else {
> -		anon_vma_unlock(vma);
> +		vma_unlock_anon_vma(vma);
>  		return -ENOMEM;
>  	}
>  	error = 0;
> @@ -1737,7 +1737,7 @@ int expand_upwards(struct vm_area_struct
>  		if (!error)
>  			vma->vm_end = address;
>  	}
> -	anon_vma_unlock(vma);
> +	vma_unlock_anon_vma(vma);
>  	return error;
>  }
>  #endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */
> @@ -1762,7 +1762,7 @@ static int expand_downwards(struct vm_ar
>  	if (error)
>  		return error;
>  
> -	anon_vma_lock(vma);
> +	vma_lock_anon_vma(vma);
>  
>  	/*
>  	 * vma->vm_start/vm_end cannot change under us because the caller
> @@ -1783,7 +1783,7 @@ static int expand_downwards(struct vm_ar
>  			vma->vm_pgoff -= grow;
>  		}
>  	}
> -	anon_vma_unlock(vma);
> +	vma_unlock_anon_vma(vma);
>  	return error;
>  }
>  
> 
> --
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