linux-kernel - Re: [PATCH 02/31] Constify struct address_space

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Date:	Fri, 4 Dec 2009 17:08:45 -0700
From:	Matthew Wilcox <matthew@....cx>
To:	Emese Revfy <re.emese@...il.com>
Cc:	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/31] Constify struct address_space_operations for
	2.6.32 v1

On Fri, Dec 04, 2009 at 11:08:09PM +0100, Emese Revfy wrote:
>  struct address_space_operations {
> -	int (*writepage)(struct page *page, struct writeback_control *wbc);
> -	int (*readpage)(struct file *, struct page *);
> -	void (*sync_page)(struct page *);
> +	int (* const writepage)(struct page *page, struct writeback_control *wbc);
> +	int (* const readpage)(struct file *, struct page *);
> +	void (* const sync_page)(struct page *);

Umm.  What effect does this have?  Aren't functions implicitly constant?
What changes as a result of this patch?

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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