Re: [PATCH 4/7][TAKE5] support new modes in fallocate

[Christoph Hellwig]

On Wed, Jul 04, 2007 at 03:37:01PM +1000, Timothy Shimmin wrote:
> We use this capability in XFS at the moment.
> I think this is mainly for DMF (HSM) but is done via the xfs handle 
> interface
> (xfs_open_by_handle) AFAICT.
> 

You're not :)  You're using an O_INVIBLE equivalent (as described below),
which would be a useful thing to have at the VFS level, but adding hacks
to some system calls only wouldn't help any HSM system.  It's just useless
API clutter.

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