Re: [PATCH net v3 1/2] iov_iter: export iov_iter_restore

[Christian Brauner]

> Export iov_iter_restore so that it can be used by modules.
> 
> This is needed by the virtio vsock transport (which can be built as a
> module) to restore the msg_iter state when transmission fails.
> 
> Acked-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
> Signed-off-by: Octavian Purdila <tavip@xxxxxxxxxx>
>
> diff --git a/lib/iov_iter.c b/lib/iov_iter.c
> index 273919b16161..f5df63961fb2 100644
> --- a/lib/iov_iter.c
> +++ b/lib/iov_iter.c
> @@ -1491,6 +1491,7 @@ void iov_iter_restore(struct iov_iter *i, struct iov_iter_state *state)
>  		i->__iov -= state->nr_segs - i->nr_segs;
>  	i->nr_segs = state->nr_segs;
>  }
> +EXPORT_SYMBOL_GPL(iov_iter_restore);

At least only export it for the module that really needs it. For
example, see:

EXPORT_SYMBOL_FOR_MODULES(__kernel_write, "autofs4");

-- 
Christian Brauner <brauner@xxxxxxxxxx>