__xa_alloc_cyclic
int __xa_alloc_cyclic(struct xarray *, uint32_t *, void *, uint32_t, uint32_t *, gfp_t);
retval = __xa_alloc_cyclic(xa, pindex, ptr, mask, pnext_index, gfp);
retval = __xa_alloc_cyclic(xa, pindex, ptr, mask, pnext_index, gfp);