Re: [PATCH v13 5/5] virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_VQ

[Wei Wang]

On 08/03/2017 04:13 PM, Pankaj Gupta wrote:
> > +        /* Allocate space for find_vqs parameters */
> > +        vqs = kcalloc(nvqs, sizeof(*vqs), GFP_KERNEL);
> > +        if (!vqs)
> > +                goto err_vq;
> > +        callbacks = kmalloc_array(nvqs, sizeof(*callbacks), GFP_KERNEL);
> > +        if (!callbacks)
> > +                goto err_callback;
> > +        names = kmalloc_array(nvqs, sizeof(*names), GFP_KERNEL);
>                      
>         is size here (integer) intentional?


Sorry, I didn't get it. Could you please elaborate more?


> > +        if (!names)
> > +                goto err_names;
> > +
> > +        callbacks[0] = balloon_ack;
> > +        names[0] = "inflate";
> > +        callbacks[1] = balloon_ack;
> > +        names[1] = "deflate";
> > +
> > +        i = 2;
> > +        if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_STATS_VQ)) {
> > +                callbacks[i] = stats_request;
> just thinking if memory for callbacks[3] & names[3] is allocated?


Yes, the above kmalloc_array allocated them.


Best,
Wei