lab-10-mmap

lab-mmap

分配vma

struct vma*
vma_alloc()
{
  struct proc *p = myproc();
  struct vma *v;
  for (int i = 0; i < NVMA; i++)
  {
    v = &p->vma_list[i];
    if (v->used == 0)
    {
      v->used = 1;       
      return v;
    }
  }
  return 0;
}

sys_mmap系统调用

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