On Wed, May 18, 2016 at 04:24:07PM +0800, Fam Zheng wrote:
> We are ready to get rid of dataplane's op blockers altogether. Most operations
> are already unblocked in virtio-blk, and those remained for virtio-scsi only
> because we haven't got around to add counterpart unblocking code.
> 
> The first patch fixes an existing bug with blockdev-backup. Then the op
> blockers are removed from both devices.
> 
> 
> Fam Zheng (3):
>   blockdev-backup: Don't move target AioContext if it's attached
>   virtio-blk: Remove op blocker for dataplane
>   virtio-scsi: Remove op blocker for dataplane
> 
>  blockdev.c                      | 12 +++++++-
>  hw/block/dataplane/virtio-blk.c | 63 -----------------------------------------
>  hw/scsi/virtio-scsi.c           | 62 ----------------------------------------
>  include/hw/virtio/virtio-scsi.h | 11 -------
>  4 files changed, 11 insertions(+), 137 deletions(-)

Please rebase on qemu.git/master because Kevin's "[PULL 23/31] block:
Remove BlockDriverState.blk" drops BDS->blk.

Stefan