xfs: implement pNFS export operations
authorChristoph Hellwig <hch@lst.de>
Mon, 16 Feb 2015 00:49:23 +0000 (11:49 +1100)
committerDave Chinner <david@fromorbit.com>
Mon, 16 Feb 2015 00:49:23 +0000 (11:49 +1100)
Add operations to export pNFS block layouts from an XFS filesystem.  See
the previous commit adding the operations for an explanation of them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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