xfs_refcount_split_extent
error = xfs_refcount_split_extent(cur, XFS_REFC_DOMAIN_SHARED,
error = xfs_refcount_split_extent(cur, XFS_REFC_DOMAIN_SHARED,
error = xfs_refcount_split_extent(cur, XFS_REFC_DOMAIN_COW,
error = xfs_refcount_split_extent(cur, XFS_REFC_DOMAIN_COW,
DEFINE_REFCOUNT_EXTENT_AT_EVENT(xfs_refcount_split_extent);