SPLAY_GENERATE
SPLAY_GENERATE(iommu_page_tree, iommu_page_entry, ipe_node, iomap_compare);
SPLAY_GENERATE(uturn_page_tree, uturn_page_entry, upe_node, upe_compare);
SPLAY_GENERATE(phtree, pool_item_header, ph_node, phtree_compare);
SPLAY_GENERATE(kfsfileoptree, kernfs_fileop, kf_node, kernfs_fileop_compare);
SPLAY_GENERATE(lfs_splay, lbnentry, entry, lge);