Re: [PATCH net-next V4 5/5] vhost: access vq metadata through kernel virtual address

[Jason Wang]

On 2019/1/25 äå11:03, Michael S. Tsirkin wrote:
> > +/* Suppress the vma that needs writeback since we can not track dirty
> > + * pages now.
> > + */
> > +static bool vma_can_vmap(struct vm_area_struct *vma)
> > +{
> > +	return vma_is_anonymous(vma) || is_vm_hugetlb_page(vma) ||
> > +	       vma_is_shmem(vma);
> > +}
> > +
> IIUC a second but anonymous memory needs writeback too, just to swap.
> I'm not an MM person so I might be off.


Right, my fault, I mean the vma that needs dirty page tracking.

Thanks