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[for-5.0,v5,2/3] replication: assert we own context before job_cancel_sync

Message ID 20200407115651.69472-3-s.reiter@proxmox.com
State New
Headers show
Series Fix some AIO context locking in jobs | expand

Commit Message

Stefan Reiter April 7, 2020, 11:56 a.m. UTC
job_cancel_sync requires the job's lock to be held, all other callers
already do this (replication_stop, drive_backup_abort,
blockdev_backup_abort, job_cancel_sync_all, cancel_common).

In this case we're in a BlockDriver handler, so we already have a lock,
just assert that it is the same as the one used for the commit_job.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
---
 block/replication.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/block/replication.c b/block/replication.c
index 413d95407d..da013c2041 100644
--- a/block/replication.c
+++ b/block/replication.c
@@ -144,12 +144,15 @@  fail:
 static void replication_close(BlockDriverState *bs)
 {
     BDRVReplicationState *s = bs->opaque;
+    Job *commit_job;
 
     if (s->stage == BLOCK_REPLICATION_RUNNING) {
         replication_stop(s->rs, false, NULL);
     }
     if (s->stage == BLOCK_REPLICATION_FAILOVER) {
-        job_cancel_sync(&s->commit_job->job);
+        commit_job = &s->commit_job->job;
+        assert(commit_job->aio_context == qemu_get_current_aio_context());
+        job_cancel_sync(commit_job);
     }
 
     if (s->mode == REPLICATION_MODE_SECONDARY) {