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

"Michael S. Tsirkin" <[email protected]> Thu, 30 Jul 2026 18:59:02 -0400

Newsgroups	gmane.linux.kernel.virtualization,gmane.linux.network,gmane.comp.emulators.kvm.devel,gmane.linux.block,gmane.linux.file-systems,gmane.linux.kernel
Message-ID	<[email protected]>

On Thu, Jun 25, 2026 at 12:43:18PM +0200, Christian Brauner wrote:
> > 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 <[email protected]>
> > Signed-off-by: Octavian Purdila <[email protected]>
> >
> > 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 <[email protected]>

Octavian, you wanna try?