From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40571) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cqAK9-0002wL-BQ for qemu-devel@nongnu.org; Mon, 20 Mar 2017 23:19:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cqAK8-0001Cg-Jt for qemu-devel@nongnu.org; Mon, 20 Mar 2017 23:19:05 -0400 From: Fam Zheng Date: Tue, 21 Mar 2017 11:16:29 +0800 Message-Id: <20170321031635.22123-11-famz@redhat.com> In-Reply-To: <20170321031635.22123-1-famz@redhat.com> References: <20170321031635.22123-1-famz@redhat.com> Subject: [Qemu-devel] [PATCH RFC 10/16] virtio-scsi: Request BLK_PERM_AIO_CONTEXT_CHANGE for dataplane List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Stefan Hajnoczi , Kevin Wolf , Max Reitz , qemu-block@nongnu.org blk_set_aio_context is audited by perm API, so follow the protocol and request for permission first. Signed-off-by: Fam Zheng --- hw/scsi/virtio-scsi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 1dbc4bc..6a48356 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -811,6 +811,10 @@ static void virtio_scsi_hotplug(HotplugHandler *hotplug_dev, DeviceState *dev, return; } virtio_scsi_acquire(s); + if (!blk_request_perm(sd->conf.blk, BLK_PERM_AIO_CONTEXT_CHANGE, errp)) { + virtio_scsi_release(s); + return; + } blk_set_aio_context(sd->conf.blk, s->ctx); virtio_scsi_release(s); -- 2.9.3