1748 static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kernel,  in copy_params()  argument
1756 	if (copy_from_user(param_kernel, user, minimum_data_size))  in copy_params()
1759 	if (param_kernel->data_size < minimum_data_size)  in copy_params()
1762 	secure_data = param_kernel->flags & DM_SECURE_DATA_FLAG;  in copy_params()
1767 		dmi = param_kernel;  in copy_params()
1779 	dmi = kvmalloc(param_kernel->data_size, GFP_KERNEL | __GFP_HIGH);  in copy_params()
1783 		if (secure_data && clear_user(user, param_kernel->data_size))  in copy_params()
1791 	memcpy(dmi, param_kernel, minimum_data_size);  in copy_params()
1794 			   param_kernel->data_size - minimum_data_size))  in copy_params()
1798 	if (secure_data && clear_user(user, param_kernel->data_size))  in copy_params()
1805 	free_params(dmi, param_kernel->data_size, *param_flags);  in copy_params()
1850 	struct dm_ioctl param_kernel;  in ctl_ioctl()  local
1884 	r = copy_params(user, &param_kernel, ioctl_flags, &param, &param_flags);  in ctl_ioctl()