1931 static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kernel,  in copy_params()  argument
1939 	if (copy_from_user((char *)param_kernel + sizeof(param_kernel->version),  in copy_params()
1940 			   (char __user *)user + sizeof(param_kernel->version),  in copy_params()
1941 			   minimum_data_size - sizeof(param_kernel->version)))  in copy_params()
1944 	if (param_kernel->data_size < minimum_data_size) {  in copy_params()
1946 		      param_kernel->data_size);  in copy_params()
1950 	secure_data = param_kernel->flags & DM_SECURE_DATA_FLAG;  in copy_params()
1955 		dmi = param_kernel;  in copy_params()
1966 	dmi = kvmalloc(param_kernel->data_size, GFP_NOIO | __GFP_HIGH);  in copy_params()
1969 		if (secure_data && clear_user(user, param_kernel->data_size))  in copy_params()
1977 	memcpy(dmi, param_kernel, minimum_data_size);  in copy_params()
1980 			   param_kernel->data_size - minimum_data_size))  in copy_params()
1984 	if (secure_data && clear_user(user, param_kernel->data_size))  in copy_params()
1991 	free_params(dmi, param_kernel->data_size, *param_flags);  in copy_params()
2036 	struct dm_ioctl param_kernel;  in ctl_ioctl()  local
2051 	r = check_version(cmd, user, &param_kernel);  in ctl_ioctl()
2070 	r = copy_params(user, &param_kernel, ioctl_flags, &param, &param_flags);  in ctl_ioctl()