calc_pages_for
num_pages = calc_pages_for(0, object_map_bytes) + 1;
obj_req->copyup_bvec_count = calc_pages_for(0, obj_overlap);
ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len));
int num_pages = calc_pages_for(0, buf_len);
ceph_wbc->max_pages = calc_pages_for(0, (u64)xlen);
calc_pages_for(osd_data->alignment,
num_pages = calc_pages_for((u64)osd_data->alignment,
num_pages = calc_pages_for(read_off, read_len);
num_pages = calc_pages_for(write_pos, write_len);
int num_pages = calc_pages_for(data->alignment, data->length);
page_count = calc_pages_for(data->alignment, (u64)data->length);
enc_page_cnt = calc_pages_for(0, tail_len);
enc_page_cnt = calc_pages_for(0, tail_len);
sg_cnt += calc_pages_for(dpos, dlen);
num_pages = calc_pages_for((u64)osd_data->alignment,
pages = ceph_alloc_page_vector(calc_pages_for(0, data_len),