virtio: Add ability to detach unused buffers from vrings

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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>

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Shirley Ma 2010-01-18 19:15:23 +05:30 • committed by Rusty Russell

parent 69740c8ba8

commit c021eac414

2 changed files with 29 additions and 0 deletions

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drivers/virtio/virtio_ring.c

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