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job: Add reference counting

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This moves reference counting from BlockJob to Job.

In order to keep calling the BlockJob cleanup code when the job is
deleted via job_unref(), introduce a new JobDriver.free callback. Every
block job must use block_job_free() for this callback, this is asserted
in block_job_create().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Kevin Wolf 2018-04-13 18:50:05 +02:00
parent a50c2ab858
commit 80fa2c756b
13 changed files with 77 additions and 59 deletions
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2
block/mirror.c
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@ -989,6 +989,7 @@ static const BlockJobDriver mirror_job_driver = {
.job_driver = {
.instance_size = sizeof(MirrorBlockJob),
.job_type = JOB_TYPE_MIRROR,
.free = block_job_free,
},
.start = mirror_run,
.complete = mirror_complete,
@ -1001,6 +1002,7 @@ static const BlockJobDriver commit_active_job_driver = {
.job_driver = {
.instance_size = sizeof(MirrorBlockJob),
.job_type = JOB_TYPE_COMMIT,
.free = block_job_free,
},
.start = mirror_run,
.complete = mirror_complete,