linux-ext4 - Re: [PATCH] fix up vfs inode version patch for modules

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Date:	Mon, 03 Dec 2007 10:00:34 -0800
From:	Mingming Cao <cmm@...ibm.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] fix up vfs inode version patch for modules

On Wed, 2007-11-28 at 14:33 -0600, Eric Sandeen wrote:
> ext4 calls inode_inc_iversion(), but it's not exported, so modular ext4
> has trouble.  Any reason not to just make it an inline, as below?
> 

I agree.

Mingming
> Signed-off-by: Eric Sandeen <sandeen@...hat.com>
> 
> ---
> 
> Index: linux-2.6.24-rc1/fs/inode.c
> ===================================================================
> --- linux-2.6.24-rc1.orig/fs/inode.c
> +++ linux-2.6.24-rc1/fs/inode.c
> @@ -1243,23 +1243,6 @@ void touch_atime(struct vfsmount *mnt, s
>  EXPORT_SYMBOL(touch_atime);
> 
>  /**
> - *     inode_inc_iversion      -       increments i_version
> - *     @inode: inode that need to be updated
> - *
> - *     Every time the inode is modified, the i_version field
> - *     will be incremented.
> - *     The filesystem has to be mounted with i_version flag
> - *
> - */
> -
> -void inode_inc_iversion(struct inode *inode)
> -{
> -	spin_lock(&inode->i_lock);
> -	inode->i_version++;
> -	spin_unlock(&inode->i_lock);
> -}
> -
> -/**
>   *	file_update_time	-	update mtime and ctime time
>   *	@file: file accessed
>   *
> Index: linux-2.6.24-rc1/include/linux/fs.h
> ===================================================================
> --- linux-2.6.24-rc1.orig/include/linux/fs.h
> +++ linux-2.6.24-rc1/include/linux/fs.h
> @@ -1396,7 +1396,21 @@ static inline void inode_dec_link_count(
>  	mark_inode_dirty(inode);
>  }
> 
> -extern void inode_inc_iversion(struct inode *inode);
> +/**
> + * inode_inc_iversion - increments i_version
> + * @inode: inode that need to be updated
> + *
> + * Every time the inode is modified, the i_version field will be incremented.
> + * The filesystem has to be mounted with i_version flag
> + */
> +
> +static inline void inode_inc_iversion(struct inode *inode)
> +{
> +       spin_lock(&inode->i_lock);
> +       inode->i_version++;
> +       spin_unlock(&inode->i_lock);
> +}
> +
>  extern void touch_atime(struct vfsmount *mnt, struct dentry *dentry);
>  static inline void file_accessed(struct file *file)
>  {
> 
> -
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