blob: 4fbaa1576f3dd2d192fde0cbbfb8ba840eb72b4d [file] [log] [blame]
/* Simplest soft offline testcase */
#include <stdlib.h>
#include <sys/mman.h>
#include <stdio.h>
#include <unistd.h>
#define err(x) perror(x), exit(1)
#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */
int PS;
int main(void)
{
PS = getpagesize();
char *map = mmap(NULL, PS, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0);
if (map == (char *)-1L)
err("mmap");
*map = 1;
if (madvise(map, PS, MADV_SOFT_OFFLINE) < 0)
perror("madvise SOFT_OFFLINE");
*map = 2;
return 0;
}