--On 27 August 2013 16:39:45 +0200 Stefan Hajnoczi <stefa...@redhat.com> wrote:
This patch implements aio_context_acquire() and aio_context_release(). Note that existing aio_poll() callers do not need to worry about acquiring and releasing - it is only needed when multiple threads will call aio_poll() on the same AioContext.
I think this patch has another use. For reasons I forget (init of the QemuTimerListGroup being one of them) creation and deletion of AioContexts has to do be done with the BQL held. If a second thread is the ONLY user of the AioContext, this would allow some synchronisation with the eventual deletion under the BQL on the main thread. -- Alex Bligh
