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This is part of resolving the deadlock mentioned in commit "block: move draining out of bdrv_change_aio_context() and mark GRAPH_RDLOCK". The function bdrv_attach_child() runs under the graph lock, so it is not allowed to drain. It is called by: 1. replication_start() 2. quorum_add_child() 3. bdrv_open_child_common() 4. Throughout test-bdrv-graph-mod.c and test-bdrv-drain.c unit tests. In all callers, a drained section is introduced. The function quorum_add_child() runs under the graph lock, so it is not actually allowed to drain. This will be addressed by the following commit. Signed-off-by: Fiona Ebner <f.ebner@proxmox.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-ID: <20250530151125.955508-14-f.ebner@proxmox.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> |
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