qemu/include/block
John Snow 111049a4ec blockjob: refactor backup_start as backup_job_create
Refactor backup_start as backup_job_create, which only creates the job,
but does not automatically start it. The old interface, 'backup_start',
is not kept in favor of limiting the number of nearly-identical interfaces
that would have to be edited to keep up with QAPI changes in the future.

Callers that wish to synchronously start the backup_block_job can
instead just call block_job_start immediately after calling
backup_job_create.

Transactions are updated to use the new interface, calling block_job_start
only during the .commit phase, which helps prevent race conditions where
jobs may finish before we even finish building the transaction. This may
happen, for instance, during empty block backup jobs.

Reported-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1478587839-9834-6-git-send-email-jsnow@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-11-14 22:47:34 -05:00
..
accounting.h Use scripts/clean-includes to drop redundant qemu/typedefs.h 2016-03-22 22:20:16 +01:00
aio.h aio: convert from RFifoLock to QemuRecMutex 2016-10-28 21:50:18 +08:00
block.h blockjobs: split interface into public/private, Part 1 2016-11-01 08:04:56 -04:00
block_backup.h Backup: export interfaces for extra serialization 2016-09-13 11:00:56 +01:00
block_int.h blockjob: refactor backup_start as backup_job_create 2016-11-14 22:47:34 -05:00
blockjob.h blockjob: add block_job_start 2016-11-14 22:47:34 -05:00
blockjob_int.h blockjob: add .start field 2016-11-14 22:47:34 -05:00
dirty-bitmap.h block: More operations for meta dirty bitmap 2016-10-24 17:56:07 +02:00
nbd.h nbd: Implement NBD_CMD_WRITE_ZEROES on server 2016-11-02 09:28:56 +01:00
qapi.h block/qapi: Use blk_enable_write_cache() 2016-03-30 12:16:02 +02:00
raw-aio.h linux-aio: share one LinuxAioState within an AioContext 2016-07-18 15:09:31 +01:00
scsi.h * SCSI scanner support 2016-07-14 13:44:06 +01:00
snapshot.h include: Clean up includes 2016-02-23 12:43:05 +00:00
thread-pool.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
throttle-groups.h block: Move I/O throttling configuration functions to BlockBackend 2016-05-19 16:45:30 +02:00
write-threshold.h Use scripts/clean-includes to drop redundant qemu/typedefs.h 2016-03-22 22:20:16 +01:00