3175 	struct vm_area_struct *new_vma, *prev;  in copy_vma()  local
3188 	new_vma = find_vma_prev(mm, addr, &prev);  in copy_vma()
3189 	if (new_vma && new_vma->vm_start < addr + len)  in copy_vma()
3192 	new_vma = vma_merge(mm, prev, addr, addr + len, vma->vm_flags,  in copy_vma()
3195 	if (new_vma) {  in copy_vma()
3199 		if (unlikely(vma_start >= new_vma->vm_start &&  in copy_vma()
3200 			     vma_start < new_vma->vm_end)) {  in copy_vma()
3213 			VM_BUG_ON_VMA(faulted_in_anon_vma, new_vma);  in copy_vma()
3214 			*vmap = vma = new_vma;  in copy_vma()
3216 		*need_rmap_locks = (new_vma->vm_pgoff <= vma->vm_pgoff);  in copy_vma()
3218 		new_vma = vm_area_dup(vma);  in copy_vma()
3219 		if (!new_vma)  in copy_vma()
3221 		new_vma->vm_start = addr;  in copy_vma()
3222 		new_vma->vm_end = addr + len;  in copy_vma()
3223 		new_vma->vm_pgoff = pgoff;  in copy_vma()
3224 		if (vma_dup_policy(vma, new_vma))  in copy_vma()
3226 		if (anon_vma_clone(new_vma, vma))  in copy_vma()
3228 		if (new_vma->vm_file)  in copy_vma()
3229 			get_file(new_vma->vm_file);  in copy_vma()
3230 		if (new_vma->vm_ops && new_vma->vm_ops->open)  in copy_vma()
3231 			new_vma->vm_ops->open(new_vma);  in copy_vma()
3232 		if (vma_link(mm, new_vma))  in copy_vma()
3237 	return new_vma;  in copy_vma()
3240 	if (new_vma->vm_ops && new_vma->vm_ops->close)  in copy_vma()
3241 		new_vma->vm_ops->close(new_vma);  in copy_vma()
3243 	if (new_vma->vm_file)  in copy_vma()
3244 		fput(new_vma->vm_file);  in copy_vma()
3246 	unlink_anon_vmas(new_vma);  in copy_vma()
3248 	mpol_put(vma_policy(new_vma));  in copy_vma()
3250 	vm_area_free(new_vma);  in copy_vma()
3311 static int special_mapping_mremap(struct vm_area_struct *new_vma)  in special_mapping_mremap()  argument
3313 	struct vm_special_mapping *sm = new_vma->vm_private_data;  in special_mapping_mremap()
3315 	if (WARN_ON_ONCE(current->mm != new_vma->vm_mm))  in special_mapping_mremap()
3319 		return sm->mremap(sm, new_vma);  in special_mapping_mremap()