Re: [PATCH 3/6] vfs: support FS_XFLAG_REFLINK and FS_XFLAG_COWEXTSIZE

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On Thu, Aug 25, 2016 at 04:31:00PM -0700, Darrick J. Wong wrote:
> Introduce XFLAGs for the new XFS reflink inode flag and the CoW extent
> size hint, and actually plumb the CoW extent size hint into the fsxattr
> structure.

Just curious, but why would we even bother to expose the reflink flag
to userspace?
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