cs_range
struct cs_range cs_ranges_buf[MAX_PROP_LEN / sizeof(struct cs_range)];
for (i = 0; i < len / sizeof(struct cs_range); i++) {
sizeof(struct cs_range), GFP_KERNEL);
struct cs_range *cs_ranges;
struct cachestat_range cs_range = { 0, filesize };
syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);
syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);
struct cachestat_range cs_range = { PS, compute_len };
syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);