user_dest        4056 fs/btrfs/ioctl.c 	struct btrfs_ioctl_space_info __user *user_dest;
user_dest        4178 fs/btrfs/ioctl.c 	user_dest = (struct btrfs_ioctl_space_info __user *)
user_dest        4181 fs/btrfs/ioctl.c 	if (copy_to_user(user_dest, dest_orig, alloc_size))