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Revision aa659be3


Added by Christoph Hellwig about 12 years ago

virtio-blk: add volatile writecache feature

Add a new VIRTIO_BLK_F_WCACHE feature to virtio-blk to indicate that we have
a volatile write cache that needs controlled flushing. Implement a
VIRTIO_BLK_T_FLUSH operation to flush it.

Signed-off-by: Christoph Hellwig <>
Signed-off-by: Anthony Liguori <>


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