fusl/src/linux/remap_file_pages.c

#define _GNU_SOURCE
#include <sys/mman.h>
#include "syscall.h"

int remap_file_pages(void* addr,
                     size_t size,
                     int prot,
                     size_t pgoff,
                     int flags) {
  return syscall(SYS_remap_file_pages, addr, size, prot, pgoff, flags);
}