Re: [PATCH -mmotm] fs/sysfs/file.c d_path fix

[Christoph Hellwig]

On Sat, Feb 16, 2008 at 02:12:05PM -0500, Erez Zadok wrote:
> diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
> index 02223e2..a57b024 100644
> --- a/fs/sysfs/file.c
> +++ b/fs/sysfs/file.c
> @@ -329,9 +329,11 @@ static int sysfs_open_file(struct inode *inode, struct file *file)
>  	struct sysfs_ops *ops;
>  	int error = -EACCES;
>  	char *p;
> +	struct path sysfs_path;
>  
> -	p = d_path(file->f_dentry, sysfs_mount, last_sysfs_file,
> -		   sizeof(last_sysfs_file));
> +	sysfs_path.dentry = file->f_dentry;
> +	sysfs_path.mnt = sysfs_mount;
> +	p = d_path(&sysfs_path, last_sysfs_file, sizeof(last_sysfs_file));

A d_path(file->f_path, ..); should do it, but I'd really like to know
what sysfs crowd was smoking when adding a d_path in ->open.  Guys,
please explain what's going on here.

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