- mpnt->vm_ops = NULL;
- mpnt->vm_pgoff = 0;
- mpnt->vm_file = NULL;
- INIT_LIST_HEAD(&mpnt->shared);
- mpnt->vm_private_data = (void *) 0;
- insert_vm_struct(mm, mpnt);
- mm->total_vm = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT;
+ if ((ret = insert_vm_struct(mm, mpnt))) {
+ up_write(&mm->mmap_sem);
+ kmem_cache_free(vm_area_cachep, mpnt);
+ return ret;
+ }
+ vx_vmpages_sub(mm, mm->total_vm - vma_pages(mpnt));
+ mm->stack_vm = mm->total_vm;