Hi, i hope i've done everything correctly. I've send a new v4 patch. Am 29.11.2012 14:58, schrieb Stefan Hajnoczi:
On Thu, Nov 22, 2012 at 11:00:19AM +0100, Stefan Priebe wrote:@@ -406,10 +401,11 @@ static void qemu_rbd_complete_aio(RADOSCB *rcb) acb->ret = r; } } + acb->status = 0; +I suggest doing this in the BH. The qemu_aio_wait() loop in qemu_rbd_aio_cancel() needs to wait until the BH has executed. By clearing status in the BH we ensure that no matter in which order qemu_aio_wait() invokes BHs and callbacks, we'll always wait until the BH has completed before ending the while loop in qemu_rbd_aio_cancel().@@ -737,7 +741,8 @@ static BlockDriverAIOCB *rbd_start_aio(BlockDriverState *bs, failed: g_free(rcb); s->qemu_aio_count--; - qemu_aio_release(acb); + if (!acb->cancelled) + qemu_aio_release(acb); return NULL; }This scenario is impossible. We haven't returned the acb back to the caller yet so they could not have invoked qemu_aio_cancel().
Greets, Stefan -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
