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blockjobs: model single jobs as transactions

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model all independent jobs as single job transactions.

It's one less case we have to worry about when we add more states to the
transition machine. This way, we can just treat all job lifetimes exactly
the same. This helps tighten assertions of the STM graph and removes some
conditionals that would have been needed in the coming commits adding a
more explicit job lifetime management API.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
John Snow 2018-03-10 03:27:27 -05:00 • committed by Kevin Wolf
parent d4fce18844
commit 75859b9420
10 changed files with 32 additions and 31 deletions
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3
block/backup.c
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@ -621,7 +621,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
}
/* job->common.len is fixed, so we can't allow resize */
job = block_job_create(job_id, &backup_job_driver, bs,
job = block_job_create(job_id, &backup_job_driver, txn, bs,
BLK_PERM_CONSISTENT_READ,
BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE |
BLK_PERM_WRITE_UNCHANGED | BLK_PERM_GRAPH_MOD,
@ -677,7 +677,6 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL,
&error_abort);
job->common.len = len;
block_job_txn_add_job(txn, &job->common);
return &job->common;