v2: Address Stefan's comments:
- Clean up redundancy in bdrv_format_default_perms change.
- Add a test case to check both success/failure cases.
A failure case is not possible at user interface level because of other
checks we have, so write a unit test in tests/test-blk-perm.c.
Eject / change of scsi-cd on a virtio-scsi dataplane bus causes abort() because
the new BDS doesn't get proper bdrv_set_aio_context().
Store the AioContext in BB and do it in blk_insert_bs. That is done by
Vladimir's patch.
Other patches are to make sure such a bdrv_set_aio_context() doesn't interfere
with other BBs using other nodes from this graph.
Fam
Fam Zheng (15):
block: Define BLK_PERM_AIO_CONTEXT_CHANGE
block-backend: Add blk_request_perm
blockjob: Add BLK_PERM_AIO_CONTEXT_CHANGE shared perm on bs
blockjob: Allow aio context change on intermediate nodes
block: Propagate BLK_PERM_AIO_CONTEXT_CHANGE down the graph
backup: Request BLK_PERM_AIO_CONTEXT_CHANGE on target
backup: Do initial aio context move of target via BB interface
mirror: Request aio context change permission on target
commit: Allow aio context change on s->base
mirror: Do initial aio context move of target via BB interface
virtio-scsi: Request BLK_PERM_AIO_CONTEXT_CHANGE for dataplane
virtio-blk: Request BLK_PERM_AIO_CONTEXT_CHANGE for dataplane
nbd: Allow BLK_PERM_AIO_CONTEXT_CHANGE on BB
block: Add perm assertion on blk_set_aio_context
tests: Add test case for BLK_PERM_AIO_CONTEXT_CHANGE
Vladimir Sementsov-Ogievskiy (1):
blk: fix aio context loss on media change
block.c | 12 ++++++---
block/backup.c | 11 +++++++-
block/block-backend.c | 22 +++++++++++++++
block/commit.c | 6 +++--
block/mirror.c | 13 ++++++++-
block/stream.c | 3 ++-
block/vvfat.c | 2 +-
blockdev.c | 18 -------------
blockjob.c | 3 +++
hw/block/dataplane/virtio-blk.c | 15 ++++++++---
hw/scsi/virtio-scsi.c | 4 +++
include/block/block.h | 7 ++++-
include/sysemu/block-backend.h | 1 +
nbd/server.c | 6 +++--
tests/Makefile.include | 2 ++
tests/test-blk-perm.c | 59 +++++++++++++++++++++++++++++++++++++++++
16 files changed, 149 insertions(+), 35 deletions(-)
create mode 100644 tests/test-blk-perm.c
--
2.9.3
