tree 558db2ede74488606614d6e7e277f9914e38fbc1
parent 69740c8ba878f58bc3c71f74618fc2cd1da990da
author Shirley Ma <mashirle@us.ibm.com> 1263822323 +0530
committer Rusty Russell <rusty@rustcorp.com.au> 1266983547 +1030

virtio: Add ability to detach unused buffers from vrings

There's currently no way for a virtio driver to ask for unused
buffers, so it has to keep a list itself to reclaim them at shutdown.
This is redundant, since virtio_ring stores that information.  So
add a new hook to do this.

Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>