2791 	struct btrfs_ioctl_fs_info_args *fi_args;  in btrfs_ioctl_fs_info()  local
2797 	fi_args = memdup_user(arg, sizeof(*fi_args));  in btrfs_ioctl_fs_info()
2798 	if (IS_ERR(fi_args))  in btrfs_ioctl_fs_info()
2799 		return PTR_ERR(fi_args);  in btrfs_ioctl_fs_info()
2801 	flags_in = fi_args->flags;  in btrfs_ioctl_fs_info()
2802 	memset(fi_args, 0, sizeof(*fi_args));  in btrfs_ioctl_fs_info()
2805 	fi_args->num_devices = fs_devices->num_devices;  in btrfs_ioctl_fs_info()
2808 		if (device->devid > fi_args->max_id)  in btrfs_ioctl_fs_info()
2809 			fi_args->max_id = device->devid;  in btrfs_ioctl_fs_info()
2813 	memcpy(&fi_args->fsid, fs_devices->fsid, sizeof(fi_args->fsid));  in btrfs_ioctl_fs_info()
2814 	fi_args->nodesize = fs_info->nodesize;  in btrfs_ioctl_fs_info()
2815 	fi_args->sectorsize = fs_info->sectorsize;  in btrfs_ioctl_fs_info()
2816 	fi_args->clone_alignment = fs_info->sectorsize;  in btrfs_ioctl_fs_info()
2819 		fi_args->csum_type = btrfs_super_csum_type(fs_info->super_copy);  in btrfs_ioctl_fs_info()
2820 		fi_args->csum_size = btrfs_super_csum_size(fs_info->super_copy);  in btrfs_ioctl_fs_info()
2821 		fi_args->flags |= BTRFS_FS_INFO_FLAG_CSUM_INFO;  in btrfs_ioctl_fs_info()
2825 		fi_args->generation = fs_info->generation;  in btrfs_ioctl_fs_info()
2826 		fi_args->flags |= BTRFS_FS_INFO_FLAG_GENERATION;  in btrfs_ioctl_fs_info()
2830 		memcpy(&fi_args->metadata_uuid, fs_devices->metadata_uuid,  in btrfs_ioctl_fs_info()
2831 		       sizeof(fi_args->metadata_uuid));  in btrfs_ioctl_fs_info()
2832 		fi_args->flags |= BTRFS_FS_INFO_FLAG_METADATA_UUID;  in btrfs_ioctl_fs_info()
2835 	if (copy_to_user(arg, fi_args, sizeof(*fi_args)))  in btrfs_ioctl_fs_info()
2838 	kfree(fi_args);  in btrfs_ioctl_fs_info()