diff --git a/block/backup.c b/block/backup.c index 03637aeb11..763f0d7ff6 100644 --- a/block/backup.c +++ b/block/backup.c @@ -425,21 +425,6 @@ void backup_do_checkpoint(BlockJob *job, Error **errp) bdrv_set_dirty_bitmap(backup_job->copy_bitmap, 0, backup_job->len); } -static void backup_drain(BlockJob *job) -{ - BackupBlockJob *s = container_of(job, BackupBlockJob, common); - - /* Need to keep a reference in case blk_drain triggers execution - * of backup_complete... - */ - if (s->target) { - BlockBackend *target = s->target; - blk_ref(target); - blk_drain(target); - blk_unref(target); - } -} - static BlockErrorAction backup_error_action(BackupBlockJob *job, bool read, int error) { @@ -588,13 +573,11 @@ static const BlockJobDriver backup_job_driver = { .job_type = JOB_TYPE_BACKUP, .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = backup_run, .commit = backup_commit, .abort = backup_abort, .clean = backup_clean, - }, - .drain = backup_drain, + } }; static int64_t backup_calculate_cluster_size(BlockDriverState *target, diff --git a/block/commit.c b/block/commit.c index 408ae15389..bc8454463d 100644 --- a/block/commit.c +++ b/block/commit.c @@ -216,7 +216,6 @@ static const BlockJobDriver commit_job_driver = { .job_type = JOB_TYPE_COMMIT, .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = commit_run, .prepare = commit_prepare, .abort = commit_abort, diff --git a/block/mirror.c b/block/mirror.c index 853e2c7510..fe984efb90 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -646,14 +646,11 @@ static int mirror_exit_common(Job *job) bdrv_ref(mirror_top_bs); bdrv_ref(target_bs); - /* Remove target parent that still uses BLK_PERM_WRITE/RESIZE before + /* + * Remove target parent that still uses BLK_PERM_WRITE/RESIZE before * inserting target_bs at s->to_replace, where we might not be able to get * these permissions. - * - * Note that blk_unref() alone doesn't necessarily drop permissions because - * we might be running nested inside mirror_drain(), which takes an extra - * reference, so use an explicit blk_set_perm() first. */ - blk_set_perm(s->target, 0, BLK_PERM_ALL, &error_abort); + */ blk_unref(s->target); s->target = NULL; @@ -1149,28 +1146,12 @@ static bool mirror_drained_poll(BlockJob *job) return !!s->in_flight; } -static void mirror_drain(BlockJob *job) -{ - MirrorBlockJob *s = container_of(job, MirrorBlockJob, common); - - /* Need to keep a reference in case blk_drain triggers execution - * of mirror_complete... - */ - if (s->target) { - BlockBackend *target = s->target; - blk_ref(target); - blk_drain(target); - blk_unref(target); - } -} - static const BlockJobDriver mirror_job_driver = { .job_driver = { .instance_size = sizeof(MirrorBlockJob), .job_type = JOB_TYPE_MIRROR, .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = mirror_run, .prepare = mirror_prepare, .abort = mirror_abort, @@ -1178,7 +1159,6 @@ static const BlockJobDriver mirror_job_driver = { .complete = mirror_complete, }, .drained_poll = mirror_drained_poll, - .drain = mirror_drain, }; static const BlockJobDriver commit_active_job_driver = { @@ -1187,7 +1167,6 @@ static const BlockJobDriver commit_active_job_driver = { .job_type = JOB_TYPE_COMMIT, .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = mirror_run, .prepare = mirror_prepare, .abort = mirror_abort, @@ -1195,7 +1174,6 @@ static const BlockJobDriver commit_active_job_driver = { .complete = mirror_complete, }, .drained_poll = mirror_drained_poll, - .drain = mirror_drain, }; static void coroutine_fn diff --git a/block/stream.c b/block/stream.c index 0d3a6ac7c3..5562ccbf57 100644 --- a/block/stream.c +++ b/block/stream.c @@ -212,7 +212,6 @@ static const BlockJobDriver stream_job_driver = { .abort = stream_abort, .clean = stream_clean, .user_resume = block_job_user_resume, - .drain = block_job_drain, }, }; diff --git a/blockjob.c b/blockjob.c index 6e32d1a0c0..2abed0f551 100644 --- a/blockjob.c +++ b/blockjob.c @@ -90,18 +90,6 @@ void block_job_free(Job *job) error_free(bjob->blocker); } -void block_job_drain(Job *job) -{ - BlockJob *bjob = container_of(job, BlockJob, job); - const JobDriver *drv = job->driver; - BlockJobDriver *bjdrv = container_of(drv, BlockJobDriver, job_driver); - - blk_drain(bjob->blk); - if (bjdrv->drain) { - bjdrv->drain(bjob); - } -} - static char *child_job_get_parent_desc(BdrvChild *c) { BlockJob *job = c->opaque; @@ -422,7 +410,6 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver, assert(is_block_job(&job->job)); assert(job->job.driver->free == &block_job_free); assert(job->job.driver->user_resume == &block_job_user_resume); - assert(job->job.driver->drain == &block_job_drain); job->blk = blk; diff --git a/include/block/blockjob_int.h b/include/block/blockjob_int.h index e4a318dd15..e2824a36a8 100644 --- a/include/block/blockjob_int.h +++ b/include/block/blockjob_int.h @@ -52,17 +52,6 @@ struct BlockJobDriver { * besides job->blk to the new AioContext. */ void (*attached_aio_context)(BlockJob *job, AioContext *new_context); - - /* - * If the callback is not NULL, it will be invoked when the job has to be - * synchronously cancelled or completed; it should drain BlockDriverStates - * as required to ensure progress. - * - * Block jobs must use the default implementation for job_driver.drain, - * which will in turn call this callback after doing generic block job - * stuff. - */ - void (*drain)(BlockJob *job); }; /** @@ -107,14 +96,6 @@ void block_job_free(Job *job); */ void block_job_user_resume(Job *job); -/** - * block_job_drain: - * Callback to be used for JobDriver.drain in all block jobs. Drains the main - * block node associated with the block jobs and calls BlockJobDriver.drain for - * job-specific actions. - */ -void block_job_drain(Job *job); - /** * block_job_ratelimit_get_delay: * diff --git a/include/qemu/job.h b/include/qemu/job.h index 73c67d3175..bd59cd8944 100644 --- a/include/qemu/job.h +++ b/include/qemu/job.h @@ -220,13 +220,6 @@ struct JobDriver { */ void (*complete)(Job *job, Error **errp); - /* - * If the callback is not NULL, it will be invoked when the job has to be - * synchronously cancelled or completed; it should drain any activities - * as required to ensure progress. - */ - void (*drain)(Job *job); - /** * If the callback is not NULL, prepare will be invoked when all the jobs * belonging to the same transaction complete; or upon this job's completion @@ -470,12 +463,6 @@ bool job_user_paused(Job *job); */ void job_user_resume(Job *job, Error **errp); -/* - * Drain any activities as required to ensure progress. This can be called in a - * loop to synchronously complete a job. - */ -void job_drain(Job *job); - /** * Get the next element from the list of block jobs after @job, or the * first one if @job is %NULL. diff --git a/job.c b/job.c index 28dd48f8a5..04409b40aa 100644 --- a/job.c +++ b/job.c @@ -523,16 +523,6 @@ void coroutine_fn job_sleep_ns(Job *job, int64_t ns) job_pause_point(job); } -void job_drain(Job *job) -{ - /* If job is !busy this kicks it into the next pause point. */ - job_enter(job); - - if (job->driver->drain) { - job->driver->drain(job); - } -} - /* Assumes the block_job_mutex is held */ static bool job_timer_not_pending(Job *job) { @@ -991,7 +981,7 @@ int job_finish_sync(Job *job, void (*finish)(Job *, Error **errp), Error **errp) } AIO_WAIT_WHILE(job->aio_context, - (job_drain(job), !job_is_completed(job))); + (job_enter(job), !job_is_completed(job))); ret = (job_is_cancelled(job) && job->ret == 0) ? -ECANCELED : job->ret; job_unref(job); diff --git a/tests/test-bdrv-drain.c b/tests/test-bdrv-drain.c index 374bef6bb2..fa0e6a648b 100644 --- a/tests/test-bdrv-drain.c +++ b/tests/test-bdrv-drain.c @@ -848,7 +848,6 @@ BlockJobDriver test_job_driver = { .instance_size = sizeof(TestBlockJob), .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = test_job_run, .complete = test_job_complete, .prepare = test_job_prepare, @@ -1574,7 +1573,6 @@ static const BlockJobDriver test_drop_backing_job_driver = { .instance_size = sizeof(TestDropBackingBlockJob), .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = test_drop_backing_job_run, .commit = test_drop_backing_job_commit, } @@ -1711,7 +1709,6 @@ static const BlockJobDriver test_simple_job_driver = { .instance_size = sizeof(TestSimpleBlockJob), .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = test_simple_job_run, .clean = test_simple_job_clean, }, diff --git a/tests/test-block-iothread.c b/tests/test-block-iothread.c index 926577b1f9..cfe30bab21 100644 --- a/tests/test-block-iothread.c +++ b/tests/test-block-iothread.c @@ -401,7 +401,6 @@ BlockJobDriver test_job_driver = { .instance_size = sizeof(TestBlockJob), .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = test_job_run, .complete = test_job_complete, .prepare = test_job_prepare, diff --git a/tests/test-blockjob-txn.c b/tests/test-blockjob-txn.c index 7da9216d5b..8bd13b9949 100644 --- a/tests/test-blockjob-txn.c +++ b/tests/test-blockjob-txn.c @@ -72,7 +72,6 @@ static const BlockJobDriver test_block_job_driver = { .instance_size = sizeof(TestBlockJob), .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = test_block_job_run, .clean = test_block_job_clean, }, diff --git a/tests/test-blockjob.c b/tests/test-blockjob.c index 68a0819495..7844c9ffcb 100644 --- a/tests/test-blockjob.c +++ b/tests/test-blockjob.c @@ -22,7 +22,6 @@ static const BlockJobDriver test_block_job_driver = { .instance_size = sizeof(BlockJob), .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, }, }; @@ -196,7 +195,6 @@ static const BlockJobDriver test_cancel_driver = { .instance_size = sizeof(CancelJob), .free = block_job_free, .user_resume = block_job_user_resume, - .drain = block_job_drain, .run = cancel_job_run, .complete = cancel_job_complete, },