[Ocfs2-devel] [PATCH 1/4] ocfs2: Add struct file to ocfs2_refcount_cow.

[Tao Ma <tao.ma@oracle.com>]

On 07/01/2010 05:12 PM, Joel Becker wrote:
> On Thu, Jul 01, 2010 at 08:17:37AM +0800, Tao Ma wrote:
>> Joel Becker wrote:
>>> On Wed, Jun 30, 2010 at 11:11:47AM +0800, Tao Ma wrote:
>>>> oh, sorry joel. There does exist one place that we don't have filp.
>>>> It is in ocfs2_orphan_for_truncate, we have to CoW the cluster
>>>> containing i_size and pass NULL as filp.
>>>
>>> 	Maybe ocfs2_cow_file_pos() needs both, but write_begin_nolock
>>> and page_mkwrite do not.
>> yes, so what do you mean? I am puzzled, sorry.
>> You mean we export 2 different functions from refcountree.c.
>> One is ocfs2_refcount_cow_file(struct file *,...)
>> and another is ocfs2_refcount_cow_inode(struct inode *,...)?
>
> 	No.  Just add have refcount_cow() take both an inode and a file,
> and pass the NULL file from orphan_for_truncate().  That's fine.
> 	But ocfs2_write_begin_nolock() and and ocfs2_page_mkwrite() can
> take a file without having to take an inode.
oh, I see. thanks.

Regards,
Tao