linux-kernel - Re: [PATCH 11/31] Constify struct file

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Date:	Sun, 06 Dec 2009 02:47:44 +0100
From:	Emese Revfy <re.emese@...il.com>
To:	Greg KH <gregkh@...e.de>
CC:	lenb@...nel.org, astarikovskiy@...e.de, mchehab@...radead.org,
	linville@...driver.com, miklos@...redi.hu, davem@...emloft.net,
	rostedt@...dmis.org, fweisbec@...il.com, mingo@...hat.com,
	avi@...hat.com, mtosatti@...hat.com, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 11/31] Constify struct file_operations for 2.6.32 v1

Greg KH wrote:
> On Sat, Dec 05, 2009 at 03:50:23AM +0100, Emese Revfy wrote:
>> Greg KH wrote:
>>> On Sat, Dec 05, 2009 at 01:02:59AM +0100, Emese Revfy wrote:
>>>> -static struct file_operations ptmx_fops;
>>>> +static const struct file_operations ptmx_fops = {
>>>> +	.llseek		= no_llseek,
>>>> +	.read		= tty_read,
>>>> +	.write		= tty_write,
>>>> +	.poll		= tty_poll,
>>>> +	.unlocked_ioctl	= tty_ioctl,
>>>> +	.compat_ioctl	= tty_compat_ioctl,
>>>> +	.open		= ptmx_open,
>>>> +	.release	= tty_release,
>>>> +	.fasync		= tty_fasync,
>>>> +};
>>> You just made these functions all global, for no real good reason.  Why
>>> did you do this?
>> I think this is the only way to make ptmx_fops const, provided we want to. 
> 
> Why do we want to?

Because I saw that checkpatch.pl itself tries to ensure the same I went
through the whole tree looking for non-const file_operations structures
and tried to make them const as best as I could. If you think making
ptmx_fops const is not worth the effort I will remove it from the patch.
--
Emese
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