linux-kernel - Re: [PATCH 06/18] spufs: use llseek in all file operations

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Message-ID: <1278551728.28333.55.camel@pororo.lan>
Date:	Thu, 08 Jul 2010 09:15:28 +0800
From:	Jeremy Kerr <jk@...abs.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, John Kacur <jkacur@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Christoph Hellwig <hch@....de>, linuxppc-dev@...abs.org
Subject: Re: [PATCH 06/18] spufs: use llseek in all file operations

Hi Arnd,

> The default for llseek is changing, so we need
> explicit operations everywhere.

Looks good, but:

> @@ -2151,7 +2166,7 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
>  static const struct file_operations spufs_ibox_info_fops = {
>  	.open = spufs_info_open,
>  	.read = spufs_ibox_info_read,
> -	.llseek  = generic_file_llseek,
> +	.llseek = no_llseek,
>  };
> 
>  static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
> @@ -2194,7 +2209,7 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
>  static const struct file_operations spufs_wbox_info_fops = {
>  	.open = spufs_info_open,
>  	.read = spufs_wbox_info_read,
> -	.llseek  = generic_file_llseek,
> +	.llseek = no_llseek,
>  };
> 

Why the change in behaviour for the mbox info files?

Cheers,


Jeremy

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