Re: [PATCH 1/3] fs: Document the reflink(2) system call.

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Joel Becker wrote:
> Both btrfs and ocfs2 will only copy the hunk modified, leaving the
> rest of the file shared; you won't have long wait times for the CoW
> of large files just because you modified one byte.

Which is brilliant and perfect, and should be near the top of any
marketing materials for reflink :-)

-- Jamie

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