Ocfs2 devel - Mar 2016 - HEADUP: generic FICLONE ioctl and ->clone_file_range method

We made the btrfs clone support generic to add NFS support, and support
the future XFS reflink support.  It looks like ocfs2 could support
these as well, so it would be great to get the clone_file_range method
wired up.  xfstests has over 100 testcases for it, so it should be
easy to verify.

Hi Christoph,

The feature sounds good. OCFS2 has file clone feature (so far, we only support
clone the whole file),
what efforts will be involved if we add this feature support?



Thanks
Gang

>>> 
> We made the btrfs clone support generic to add NFS support, and support
> the future XFS reflink support.  It looks like ocfs2 could support
> these as well, so it would be great to get the clone_file_range method
> wired up.  xfstests has over 100 testcases for it, so it should be
> easy to verify.
> 
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