On 08/23/2012 07:36 PM, Michael S. Tsirkin wrote:

--->

virtio-balloon: replace page->lru list with page->private.

The point is to free up page->lru for use by compaction.
Warning: completely untested, will provide tested version
if we agree on this direction.

A singly linked list is not going to work for page migration,
which needs to get pages that might be in the middle of the
balloon list.

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