linux-kernel - Re: [PATCH 12/79] debugfs: switch to simple_follow

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Date:	Tue, 5 May 2015 11:25:51 +0200
From:	Jan Kara <jack@...e.cz>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Neil Brown <neilb@...e.de>,
	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 12/79] debugfs: switch to simple_follow_link()

On Tue 05-05-15 06:21:46, Al Viro wrote:
> From: Al Viro <viro@...iv.linux.org.uk>
> 
> Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
  Looks good. You can add:
Reviewed-by: Jan Kara <jack@...e.cz>

								Honza
> ---
>  fs/debugfs/file.c       | 12 ------------
>  fs/debugfs/inode.c      |  6 +++---
>  include/linux/debugfs.h |  1 -
>  3 files changed, 3 insertions(+), 16 deletions(-)
> 
> diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
> index 830a7e7..284f9aa 100644
> --- a/fs/debugfs/file.c
> +++ b/fs/debugfs/file.c
> @@ -17,7 +17,6 @@
>  #include <linux/fs.h>
>  #include <linux/seq_file.h>
>  #include <linux/pagemap.h>
> -#include <linux/namei.h>
>  #include <linux/debugfs.h>
>  #include <linux/io.h>
>  #include <linux/slab.h>
> @@ -43,17 +42,6 @@ const struct file_operations debugfs_file_operations = {
>  	.llseek =	noop_llseek,
>  };
>  
> -static void *debugfs_follow_link(struct dentry *dentry, struct nameidata *nd)
> -{
> -	nd_set_link(nd, d_inode(dentry)->i_private);
> -	return NULL;
> -}
> -
> -const struct inode_operations debugfs_link_operations = {
> -	.readlink       = generic_readlink,
> -	.follow_link    = debugfs_follow_link,
> -};
> -
>  static int debugfs_u8_set(void *data, u64 val)
>  {
>  	*(u8 *)data = val;
> diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
> index c1e7ffb..7eaec88 100644
> --- a/fs/debugfs/inode.c
> +++ b/fs/debugfs/inode.c
> @@ -174,7 +174,7 @@ static void debugfs_evict_inode(struct inode *inode)
>  	truncate_inode_pages_final(&inode->i_data);
>  	clear_inode(inode);
>  	if (S_ISLNK(inode->i_mode))
> -		kfree(inode->i_private);
> +		kfree(inode->i_link);
>  }
>  
>  static const struct super_operations debugfs_super_operations = {
> @@ -511,8 +511,8 @@ struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
>  		return failed_creating(dentry);
>  	}
>  	inode->i_mode = S_IFLNK | S_IRWXUGO;
> -	inode->i_op = &debugfs_link_operations;
> -	inode->i_private = link;
> +	inode->i_op = &simple_symlink_inode_operations;
> +	inode->i_link = link;
>  	d_instantiate(dentry, inode);
>  	return end_creating(dentry);
>  }
> diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
> index cb25af4..420311b 100644
> --- a/include/linux/debugfs.h
> +++ b/include/linux/debugfs.h
> @@ -45,7 +45,6 @@ extern struct dentry *arch_debugfs_dir;
>  
>  /* declared over in file.c */
>  extern const struct file_operations debugfs_file_operations;
> -extern const struct inode_operations debugfs_link_operations;
>  
>  struct dentry *debugfs_create_file(const char *name, umode_t mode,
>  				   struct dentry *parent, void *data,
> -- 
> 2.1.4
> 
> --
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-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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