On Mon, Feb 19, 2018 at 02:10:29PM +0100, Tomáš Golembiovský wrote: > +\item[VIRTIO_BALLOON_S_CACHES (7)] The amount of memory currently used for > + caching files and other data from disk (in bytes). > \end{description} This one is somewhat vague. I'm not sure if it means guest page cache specifically or something more general. On the other hand, the numbers tend to be OS specific... Reviewed-by: Stefan Hajnoczi