Maximum size of data in crush_choose_firstn Ceph CRUSH source code

Hi all, I have a question regarding a function called *crush_choose_firstn* in Ceph source code namely *mapper.c* This function has following pointer variables : - const struct crush_map *map, - struct crush_work *work, const struct crush_bucket *bucket, - int *out, - const __u32 *weight, - int *out2, - const struct crush_choose_arg *choose_args *- const struct crush_map *map.* What is the maximum size of data involved here? I mean what is the upper bound? BR Bobby