From cc19f1773d30d13293d703140eb5627e393ace6e Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Thu, 6 Jun 2019 18:41:29 +0300 Subject: [PATCH] block/replication: drop usage of bs->job We are going to remove bs->job pointer. Drop it's usage in replication code. Additionally we have to return job pointer from some mirror APIs. Signed-off-by: Vladimir Sementsov-Ogievskiy Signed-off-by: Kevin Wolf --- block/mirror.c | 38 ++++++++++++++++++++++---------------- block/replication.c | 21 ++++++++++++--------- include/block/block_int.h | 12 ++++++------ 3 files changed, 40 insertions(+), 31 deletions(-) diff --git a/block/mirror.c b/block/mirror.c index f8bdb5b21b..b5878ba574 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -1482,7 +1482,8 @@ static BlockDriver bdrv_mirror_top = { .bdrv_child_perm = bdrv_mirror_top_child_perm, }; -static void mirror_start_job(const char *job_id, BlockDriverState *bs, +static BlockJob *mirror_start_job( + const char *job_id, BlockDriverState *bs, int creation_flags, BlockDriverState *target, const char *replaces, int64_t speed, uint32_t granularity, int64_t buf_size, @@ -1514,7 +1515,7 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs, if (buf_size < 0) { error_setg(errp, "Invalid parameter 'buf-size'"); - return; + return NULL; } if (buf_size == 0) { @@ -1523,7 +1524,7 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs, if (bs == target) { error_setg(errp, "Can't mirror node into itself"); - return; + return NULL; } /* In the case of active commit, add dummy driver to provide consistent @@ -1532,7 +1533,7 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs, mirror_top_bs = bdrv_new_open_driver(&bdrv_mirror_top, filter_node_name, BDRV_O_RDWR, errp); if (mirror_top_bs == NULL) { - return; + return NULL; } if (!filter_node_name) { mirror_top_bs->implicit = true; @@ -1554,7 +1555,7 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs, if (local_err) { bdrv_unref(mirror_top_bs); error_propagate(errp, local_err); - return; + return NULL; } /* Make sure that the source is not resized while the job is running */ @@ -1662,7 +1663,8 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs, trace_mirror_start(bs, s, opaque); job_start(&s->common.job); - return; + + return &s->common; fail: if (s) { @@ -1684,6 +1686,8 @@ fail: bdrv_replace_node(mirror_top_bs, backing_bs(mirror_top_bs), &error_abort); bdrv_unref(mirror_top_bs); + + return NULL; } void mirror_start(const char *job_id, BlockDriverState *bs, @@ -1712,25 +1716,27 @@ void mirror_start(const char *job_id, BlockDriverState *bs, filter_node_name, true, copy_mode, errp); } -void commit_active_start(const char *job_id, BlockDriverState *bs, - BlockDriverState *base, int creation_flags, - int64_t speed, BlockdevOnError on_error, - const char *filter_node_name, - BlockCompletionFunc *cb, void *opaque, - bool auto_complete, Error **errp) +BlockJob *commit_active_start(const char *job_id, BlockDriverState *bs, + BlockDriverState *base, int creation_flags, + int64_t speed, BlockdevOnError on_error, + const char *filter_node_name, + BlockCompletionFunc *cb, void *opaque, + bool auto_complete, Error **errp) { bool base_read_only; Error *local_err = NULL; + BlockJob *ret; base_read_only = bdrv_is_read_only(base); if (base_read_only) { if (bdrv_reopen_set_read_only(base, false, errp) < 0) { - return; + return NULL; } } - mirror_start_job(job_id, bs, creation_flags, base, NULL, speed, 0, 0, + ret = mirror_start_job( + job_id, bs, creation_flags, base, NULL, speed, 0, 0, MIRROR_LEAVE_BACKING_CHAIN, on_error, on_error, true, cb, opaque, &commit_active_job_driver, false, base, auto_complete, @@ -1741,7 +1747,7 @@ void commit_active_start(const char *job_id, BlockDriverState *bs, goto error_restore_flags; } - return; + return ret; error_restore_flags: /* ignore error and errp for bdrv_reopen, because we want to propagate @@ -1749,5 +1755,5 @@ error_restore_flags: if (base_read_only) { bdrv_reopen_set_read_only(base, true, NULL); } - return; + return NULL; } diff --git a/block/replication.c b/block/replication.c index 5cffb790b3..b41bc507c0 100644 --- a/block/replication.c +++ b/block/replication.c @@ -36,8 +36,10 @@ typedef struct BDRVReplicationState { ReplicationMode mode; ReplicationStage stage; BdrvChild *active_disk; + BlockJob *commit_job; BdrvChild *hidden_disk; BdrvChild *secondary_disk; + BlockJob *backup_job; char *top_id; ReplicationState *rs; Error *blocker; @@ -147,7 +149,7 @@ static void replication_close(BlockDriverState *bs) replication_stop(s->rs, false, NULL); } if (s->stage == BLOCK_REPLICATION_FAILOVER) { - job_cancel_sync(&s->active_disk->bs->job->job); + job_cancel_sync(&s->commit_job->job); } if (s->mode == REPLICATION_MODE_SECONDARY) { @@ -315,12 +317,12 @@ static void secondary_do_checkpoint(BDRVReplicationState *s, Error **errp) Error *local_err = NULL; int ret; - if (!s->secondary_disk->bs->job) { + if (!s->backup_job) { error_setg(errp, "Backup job was cancelled unexpectedly"); return; } - backup_do_checkpoint(s->secondary_disk->bs->job, &local_err); + backup_do_checkpoint(s->backup_job, &local_err); if (local_err) { error_propagate(errp, local_err); return; @@ -449,7 +451,6 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, int64_t active_length, hidden_length, disk_length; AioContext *aio_context; Error *local_err = NULL; - BlockJob *job; aio_context = bdrv_get_aio_context(bs); aio_context_acquire(aio_context); @@ -540,7 +541,8 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, bdrv_op_block_all(top_bs, s->blocker); bdrv_op_unblock(top_bs, BLOCK_OP_TYPE_DATAPLANE, s->blocker); - job = backup_job_create(NULL, s->secondary_disk->bs, s->hidden_disk->bs, + s->backup_job = backup_job_create( + NULL, s->secondary_disk->bs, s->hidden_disk->bs, 0, MIRROR_SYNC_MODE_NONE, NULL, false, BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT, JOB_INTERNAL, @@ -551,7 +553,7 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, aio_context_release(aio_context); return; } - job_start(&job->job); + job_start(&s->backup_job->job); break; default: aio_context_release(aio_context); @@ -653,8 +655,8 @@ static void replication_stop(ReplicationState *rs, bool failover, Error **errp) * before the BDS is closed, because we will access hidden * disk, secondary disk in backup_job_completed(). */ - if (s->secondary_disk->bs->job) { - job_cancel_sync(&s->secondary_disk->bs->job->job); + if (s->backup_job) { + job_cancel_sync(&s->backup_job->job); } if (!failover) { @@ -665,7 +667,8 @@ static void replication_stop(ReplicationState *rs, bool failover, Error **errp) } s->stage = BLOCK_REPLICATION_FAILOVER; - commit_active_start(NULL, s->active_disk->bs, s->secondary_disk->bs, + s->commit_job = commit_active_start( + NULL, s->active_disk->bs, s->secondary_disk->bs, JOB_INTERNAL, 0, BLOCKDEV_ON_ERROR_REPORT, NULL, replication_done, bs, true, errp); break; diff --git a/include/block/block_int.h b/include/block/block_int.h index 06df2bda1b..8bb1cfb80a 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -1082,12 +1082,12 @@ void commit_start(const char *job_id, BlockDriverState *bs, * @errp: Error object. * */ -void commit_active_start(const char *job_id, BlockDriverState *bs, - BlockDriverState *base, int creation_flags, - int64_t speed, BlockdevOnError on_error, - const char *filter_node_name, - BlockCompletionFunc *cb, void *opaque, - bool auto_complete, Error **errp); +BlockJob *commit_active_start(const char *job_id, BlockDriverState *bs, + BlockDriverState *base, int creation_flags, + int64_t speed, BlockdevOnError on_error, + const char *filter_node_name, + BlockCompletionFunc *cb, void *opaque, + bool auto_complete, Error **errp); /* * mirror_start: * @job_id: The id of the newly-created job, or %NULL to use the