3228 	struct vm_area_struct *new_vma, *prev;  in copy_vma()  local
3243 	new_vma = vma_merge(mm, prev, addr, addr + len, vma->vm_flags,  in copy_vma()
3246 	if (new_vma) {  in copy_vma()
3250 		if (unlikely(vma_start >= new_vma->vm_start &&  in copy_vma()
3251 			     vma_start < new_vma->vm_end)) {  in copy_vma()
3264 			VM_BUG_ON_VMA(faulted_in_anon_vma, new_vma);  in copy_vma()
3265 			*vmap = vma = new_vma;  in copy_vma()
3267 		*need_rmap_locks = (new_vma->vm_pgoff <= vma->vm_pgoff);  in copy_vma()
3269 		new_vma = vm_area_dup(vma);  in copy_vma()
3270 		if (!new_vma)  in copy_vma()
3272 		new_vma->vm_start = addr;  in copy_vma()
3273 		new_vma->vm_end = addr + len;  in copy_vma()
3274 		new_vma->vm_pgoff = pgoff;  in copy_vma()
3275 		if (vma_dup_policy(vma, new_vma))  in copy_vma()
3277 		if (anon_vma_clone(new_vma, vma))  in copy_vma()
3279 		if (new_vma->vm_file)  in copy_vma()
3280 			get_file(new_vma->vm_file);  in copy_vma()
3281 		if (new_vma->vm_ops && new_vma->vm_ops->open)  in copy_vma()
3282 			new_vma->vm_ops->open(new_vma);  in copy_vma()
3283 		vma_link(mm, new_vma, prev, rb_link, rb_parent);  in copy_vma()
3286 	return new_vma;  in copy_vma()
3289 	mpol_put(vma_policy(new_vma));  in copy_vma()
3291 	vm_area_free(new_vma);  in copy_vma()
3351 static int special_mapping_mremap(struct vm_area_struct *new_vma)  in special_mapping_mremap()  argument
3353 	struct vm_special_mapping *sm = new_vma->vm_private_data;  in special_mapping_mremap()
3355 	if (WARN_ON_ONCE(current->mm != new_vma->vm_mm))  in special_mapping_mremap()
3359 		return sm->mremap(sm, new_vma);  in special_mapping_mremap()