v2: Only convert virtio-{blk,scsi}. [Paolo]
This series is based on top of Cornelia's
[PATCH 0/6] virtio: refactor host notifiers
The benifit is we don't use event_notifier_set_handler even in non-dataplane
now, which in turn makes virtio-blk and virtio-scsi follow block layer aio
context semantics. Specifically, I/O requests must come from
blk_get_aio_context(blk) events, rather than iohandler_get_aio_context(), so
that bdrv_drained_begin/end will work as expected.
Patch 4 reverts the hack (ab27c3b5e7) we added for 2.6. Lately, commit
b880481579 added another pair of bdrv_drained_begin/end so the crash cannot
happen even without ab27c3b5e7, but in order to avoid leaking requests, patch
two is still a must.
Fam Zheng (7):
virtio-bus: Drop "set_handler" parameter
virtio: Add typedef for handle_output
virtio: Introduce virtio_add_queue_aio
virtio: Use aio_set_event_notifier for aio vq
virtio-blk: Call virtio_add_queue_aio
virtio-scsi: Call virtio_add_queue_aio
Revert "mirror: Workaround for unexpected iohandler events during
completion"
block/mirror.c | 9 ---------
hw/block/virtio-blk.c | 2 +-
hw/scsi/virtio-scsi.c | 9 +++------
hw/virtio/virtio-bus.c | 11 +++++------
hw/virtio/virtio.c | 40 ++++++++++++++++++++++++++++++++--------
include/hw/virtio/virtio.h | 8 ++++++--
6 files changed, 47 insertions(+), 32 deletions(-)
--
2.8.3
