rrd_t *rrd)
{
#if defined USE_MADVISE || defined HAVE_POSIX_FADVISE
- unsigned long dontneed_start;
- unsigned long rra_start;
- unsigned long active_block;
+ off_t dontneed_start;
+ off_t rra_start;
+ off_t active_block;
unsigned long i;
ssize_t _page_size = sysconf(_SC_PAGESIZE);