This is split from series "[Qemu-devel] [PATCH v20 00/15] Drop in_use from BlockDriverState and enable point-in-time snapshot exporting over NBD", with a new patch 06 to avoid backing_blocker assertion violation.
Thanks, Fam Fam Zheng (7): block: Add BlockOpType enum block: Introduce op_blockers to BlockDriverState block: Replace in_use with operation blocker block: Move op_blocker check from block_job_create to its caller block: Add bdrv_set_backing_hd() block: Use bdrv_set_backing_hd everywhere block: Add backing_blocker in BlockDriverState block-migration.c | 7 +- block.c | 146 ++++++++++++++++++++++++++++++++-------- block/mirror.c | 2 +- block/stream.c | 4 +- block/vvfat.c | 2 +- blockdev.c | 27 +++++--- blockjob.c | 14 ++-- hw/block/dataplane/virtio-blk.c | 18 +++-- include/block/block.h | 29 +++++++- include/block/block_int.h | 9 ++- include/block/blockjob.h | 3 + 11 files changed, 203 insertions(+), 58 deletions(-) -- 1.9.2
