This series changes the block jobs so that they have a separate BlockBackend for every node on which they perform I/O. This doesn't only get us closer to the goal of only doing I/O through blk_*() from external sources (and block jobs are considered external), but can also later be used to use BlockBackend features for jobs: One could imagine replacing the very basic job throttling by the already existing and more advanced BlockBackend throttling, or using the BlockBackend error handling for block jobs.
This depends on my current block branch (because of the drain fixes). v3: - Included Eric's "block: Rename blk_write_zeroes()" and rebased the rest on top of it in order to avoid merge conflicts [Eric] - Build fix for tests/test-blockjob-txn [Changlong Xie] v2: - Rebase conflict resolution, in particular: * bdrv_new() without parameter * blk_*write_zeroes() is sector based now - Assert that all BDSes are gone after bdrv_close_all [Max, Berto] - Don't add new sector based blk_* interfaces. Instead, blk_co_preadv/pwritev are made public. [Max] - commit: Removed unnecessary cast [Max] - commit: Use blk_* functions in commit_run() [Max] Alberto Garcia (1): block: keep a list of block jobs Eric Blake (1): block: Rename blk_write_zeroes() John Snow (1): backup: Pack Notifier within BackupBlockJob Kevin Wolf (12): block: Cancel jobs first in bdrv_close_all() block: Default to enabled write cache in blk_new() block: Convert block job core to BlockBackend block: Make blk_co_preadv/pwritev() public stream: Use BlockBackend for I/O mirror: Allow target that already has a BlockBackend mirror: Use BlockBackend for I/O backup: Don't leak BackupBlockJob in error path backup: Remove bs parameter from backup_do_cow() backup: Use BlockBackend for I/O commit: Use BlockBackend for I/O blockjob: Remove BlockJob.bs block.c | 23 +--------- block/backup.c | 71 +++++++++++++++-------------- block/block-backend.c | 38 +++++++++------- block/commit.c | 53 +++++++++++++--------- block/io.c | 18 -------- block/mirror.c | 100 +++++++++++++++++++---------------------- block/parallels.c | 4 +- block/stream.c | 15 ++++--- blockdev.c | 12 +---- blockjob.c | 62 ++++++++++++++++++------- hw/scsi/scsi-disk.c | 2 +- include/block/block.h | 4 -- include/block/blockjob.h | 23 +++++++++- include/sysemu/block-backend.h | 20 ++++++--- qemu-img.c | 6 +-- qemu-io-cmds.c | 22 ++++----- tests/qemu-iotests/041 | 27 ----------- tests/qemu-iotests/041.out | 4 +- tests/test-blockjob-txn.c | 3 +- trace-events | 6 ++- 20 files changed, 254 insertions(+), 259 deletions(-) -- 1.8.3.1