On Tue, Jul 16, 2013 at 08:25:25PM +0200, Michal Privoznik wrote:
Since a9e97e0c we don't require driver->config, or virQEMUDriverGetConfig() to be called with locked QEMU driver. In fact, calling it with the driver locked would cause deadlock. Hence, the annotation to the struct field is not right. --- src/qemu/qemu_conf.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h index 8229cfc..fd5cc57 100644 --- a/src/qemu/qemu_conf.h +++ b/src/qemu/qemu_conf.h @@ -160,8 +160,7 @@ struct _virQEMUDriverConfig { struct _virQEMUDriver { virMutex lock;
- /* Require lock to get reference on 'config', - * then lockless thereafter */ + /* Immutable pointer, self-locking APIs */ virQEMUDriverConfigPtr config;
Actually, it is 'immutable pointer, immutable+lockless data', since we don't require any locks to be held in order to access fields in the config object. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|