1687 static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kernel,  in copy_params()  argument
1693 	const size_t minimum_data_size = sizeof(*param_kernel) - sizeof(param_kernel->data);  in copy_params()
1695 	if (copy_from_user(param_kernel, user, minimum_data_size))  in copy_params()
1698 	if (param_kernel->data_size < minimum_data_size)  in copy_params()
1701 	secure_data = param_kernel->flags & DM_SECURE_DATA_FLAG;  in copy_params()
1706 		dmi = param_kernel;  in copy_params()
1716 	if (param_kernel->data_size <= KMALLOC_MAX_SIZE) {  in copy_params()
1717 …dmi = kmalloc(param_kernel->data_size, GFP_NOIO | __GFP_NORETRY | __GFP_NOMEMALLOC | __GFP_NOWARN);  in copy_params()
1725 …dmi = __vmalloc(param_kernel->data_size, GFP_NOIO | __GFP_REPEAT | __GFP_HIGH | __GFP_HIGHMEM, PAG…  in copy_params()
1732 		if (secure_data && clear_user(user, param_kernel->data_size))  in copy_params()
1737 	if (copy_from_user(dmi, user, param_kernel->data_size))  in copy_params()
1744 	if (dmi->data_size != param_kernel->data_size) {  in copy_params()
1750 	if (secure_data && clear_user(user, param_kernel->data_size))  in copy_params()
1757 	free_params(dmi, param_kernel->data_size, *param_flags);  in copy_params()
1802 	struct dm_ioctl param_kernel;  in ctl_ioctl()  local
1836 	r = copy_params(user, &param_kernel, ioctl_flags, &param, &param_flags);  in ctl_ioctl()