xfs: introduce rmap extent operation stubs
Originally-From: Dave Chinner <dchinner@redhat.com> Add the stubs into the extent allocation and freeing paths that the rmap btree implementation will hook into. While doing this, add the trace points that will be used to track rmap btree extent manipulations. [darrick.wong@oracle.com: Extend the stubs to take full owner info.] Signed-off-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NDave Chinner <david@fromorbit.com>
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fs/xfs/libxfs/xfs_rmap.c
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