ttm_bo_vm_open
.open = ttm_bo_vm_open,
.open = ttm_bo_vm_open,
.open = ttm_bo_vm_open,
EXPORT_SYMBOL(ttm_bo_vm_open);
.open = ttm_bo_vm_open,
.open = ttm_bo_vm_open,
.open = ttm_bo_vm_open,
void ttm_bo_vm_open(struct vm_area_struct *vma);