- } else if (td->o.mem_type == MEM_MMAP ||
- td->o.mem_type == MEM_MMAPHUGE) {
- int flags = MAP_PRIVATE;
-
- td->mmapfd = 0;
-
- if (td->mmapfile) {
- td->mmapfd = open(td->mmapfile, O_RDWR|O_CREAT, 0644);
-
- if (td->mmapfd < 0) {
- td_verror(td, errno, "open mmap file");
- td->orig_buffer = NULL;
- return 1;
- }
- } else
- flags |= OS_MAP_ANON;
-
- td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, flags, td->mmapfd, 0);
- if (td->orig_buffer == MAP_FAILED) {
- td_verror(td, errno, "mmap");
+ if (ftruncate(td->mmapfd, td->orig_buffer_size) < 0) {
+ td_verror(td, errno, "truncate mmap file");