inode parent pointer attributes

[Roger Willcocks]

On 23 Apr 2010, at 14:00, Christoph Hellwig wrote:

> On Fri, Apr 23, 2010 at 12:07:08PM +0100, Roger Willcocks wrote:
>> Hi folks,
>>
>> Commit 6d73cf133c5477f7038577bfeda603ce9946f8cb reintroduced the
>> XFS_SB_VERSION2_PARENTBIT in the kernel headers, which is described
>> in the xfs filesystem structure document as 'All inodes must have an
>> extended attribute that points back to its parent inode'.
>>
>> There's currently (afaict) no Linux kernel implementation of this.  
>> But
>> it's something I would find very useful for a filesystem extension  
>> I'm
>> working on.
>
> Work on the Linux port of this feature stopped when SGI closed the
> Melbourne engineering office where people were working on it.
> Fortunately SGI did publish the latest development state of it for
> others to continue.  I've attached my local copy in case you're
> interested on finishing this.
>

Thanks Christoph, I'll take a look.