calc_bucket_map
static void calc_bucket_map(int *bucket, int num_buckets,
calc_bucket_map(bft, ARRAY_SIZE(bft),
calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,