From: "Daniel P. Berrange" <berrange@redhat.com> This reverts the hack done in commit 568a6cda277f04ab9baaeb97490e548b7b608aa6 Author: Jiri Denemark <jdenemar@redhat.com> Date: Fri Feb 15 15:11:47 2013 +0100 qemu: Avoid deadlock in autodestroy since we now have a fix which avoids the deadlock scenario entirely --- src/qemu/qemu_conf.h | 4 ---- src/qemu/qemu_domain.h | 1 - src/qemu/qemu_process.c | 8 +------- 3 files changed, 1 insertion(+), 12 deletions(-) diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h index d547d97..6bb3dee 100644 --- a/src/qemu/qemu_conf.h +++ b/src/qemu/qemu_conf.h @@ -254,10 +254,6 @@ struct qemuDomainDiskInfo { int io_status; }; -/* - * To avoid a certain deadlock this callback must never call any - * virQEMUCloseCallbacks* API. - */ typedef virDomainObjPtr (*virQEMUCloseCallback)(virQEMUDriverPtr driver, virDomainObjPtr vm, virConnectPtr conn); diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h index 30e6b97..dacbb54 100644 --- a/src/qemu/qemu_domain.h +++ b/src/qemu/qemu_domain.h @@ -138,7 +138,6 @@ struct _qemuDomainObjPrivate { bool gotShutdown; bool beingDestroyed; - bool autoDestroyed; char *pidfile; int nvcpupids; diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 1b9eede..9f1507a 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -4232,8 +4232,7 @@ void qemuProcessStop(virQEMUDriverPtr driver, qemuDomainCleanupRun(driver, vm); /* Stop autodestroy in case guest is restarted */ - if (!priv->autoDestroyed) - qemuProcessAutoDestroyRemove(driver, vm); + qemuProcessAutoDestroyRemove(driver, vm); /* now that we know it's stopped call the hook if present */ if (virHookPresent(VIR_HOOK_DRIVER_QEMU)) { @@ -4614,13 +4613,8 @@ qemuProcessAutoDestroy(virQEMUDriverPtr driver, VIR_DEBUG("Killing domain"); - /* We need to prevent qemuProcessStop from removing this function from - * closeCallbacks since that would cause a deadlock. - */ - priv->autoDestroyed = true; qemuProcessStop(driver, dom, VIR_DOMAIN_SHUTOFF_DESTROYED, VIR_QEMU_PROCESS_STOP_MIGRATED); - priv->autoDestroyed = false; virDomainAuditStop(dom, "destroyed"); event = virDomainEventNewFromObj(dom, -- 1.7.11.7