- } else if (td->mem_type == MEM_MMAP || td->mem_type == MEM_MMAPHUGE) {
- int flags = MAP_PRIVATE;
-
- td->hugefd = 0;
-
- if (td->mem_type == MEM_MMAPHUGE) {
- fprintf(stderr, "file=%s\n", td->hugefile);
- td->hugefd = open(td->hugefile, O_RDWR|O_CREAT, 0644);
-
- if (td->hugefd < 0) {
- td_verror(td, errno);
- perror("open huge file");
- td->orig_buffer = NULL;
- return 1;
- }
- } else
- flags |= OS_MAP_ANON;
-
- fprintf(stderr, "mmaping %lu\n", (unsigned long) td->orig_buffer_size);
- td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, flags, td->hugefd, 0);
- fprintf(stderr, "mmaped %p\n", td->orig_buffer);
- if (td->orig_buffer == MAP_FAILED) {
- td_verror(td, errno);
- perror("mmap");
+ if (ftruncate(td->mmapfd, td->orig_buffer_size) < 0) {
+ td_verror(td, errno, "truncate mmap file");