[Qemu-devel] [PATCH 04/12] dataplane: Mark host notifiers' client type as "external"

[Fam Zheng <famz@redhat.com>]

They will be excluded by type in the nested event loops in block layer,
so that unwanted events won't be processed there.

Signed-off-by: Fam Zheng <famz@redhat.com>
---
 hw/block/dataplane/virtio-blk.c |  4 ++--
 hw/scsi/virtio-scsi-dataplane.c | 16 ++++++++--------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c
index dc40ba3..ca0447f 100644
--- a/hw/block/dataplane/virtio-blk.c
+++ b/hw/block/dataplane/virtio-blk.c
@@ -283,7 +283,7 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
 
     /* Get this show started by hooking up our callbacks */
     aio_context_acquire(s->ctx);
-    aio_set_event_notifier(s->ctx, &s->host_notifier, AIO_CLIENT_UNSPECIFIED,
+    aio_set_event_notifier(s->ctx, &s->host_notifier, AIO_CLIENT_EXTERNAL,
                            handle_notify);
     aio_context_release(s->ctx);
     return;
@@ -320,7 +320,7 @@ void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s)
     aio_context_acquire(s->ctx);
 
     /* Stop notifications for new requests from guest */
-    aio_set_event_notifier(s->ctx, &s->host_notifier, AIO_CLIENT_UNSPECIFIED,
+    aio_set_event_notifier(s->ctx, &s->host_notifier, AIO_CLIENT_EXTERNAL,
                            NULL);
 
     /* Drain and switch bs back to the QEMU main loop */
diff --git a/hw/scsi/virtio-scsi-dataplane.c b/hw/scsi/virtio-scsi-dataplane.c
index f7bab09..94c63df 100644
--- a/hw/scsi/virtio-scsi-dataplane.c
+++ b/hw/scsi/virtio-scsi-dataplane.c
@@ -60,7 +60,7 @@ static VirtIOSCSIVring *virtio_scsi_vring_init(VirtIOSCSI *s,
     r = g_slice_new(VirtIOSCSIVring);
     r->host_notifier = *virtio_queue_get_host_notifier(vq);
     r->guest_notifier = *virtio_queue_get_guest_notifier(vq);
-    aio_set_event_notifier(s->ctx, &r->host_notifier, AIO_CLIENT_UNSPECIFIED,
+    aio_set_event_notifier(s->ctx, &r->host_notifier, AIO_CLIENT_EXTERNAL,
                            handler);
 
     r->parent = s;
@@ -72,7 +72,7 @@ static VirtIOSCSIVring *virtio_scsi_vring_init(VirtIOSCSI *s,
     return r;
 
 fail_vring:
-    aio_set_event_notifier(s->ctx, &r->host_notifier, AIO_CLIENT_UNSPECIFIED,
+    aio_set_event_notifier(s->ctx, &r->host_notifier, AIO_CLIENT_EXTERNAL,
                            NULL);
     k->set_host_notifier(qbus->parent, n, false);
     g_slice_free(VirtIOSCSIVring, r);
@@ -165,16 +165,16 @@ static void virtio_scsi_clear_aio(VirtIOSCSI *s)
 
     if (s->ctrl_vring) {
         aio_set_event_notifier(s->ctx, &s->ctrl_vring->host_notifier,
-                               AIO_CLIENT_UNSPECIFIED, NULL);
+                               AIO_CLIENT_EXTERNAL, NULL);
     }
     if (s->event_vring) {
         aio_set_event_notifier(s->ctx, &s->event_vring->host_notifier,
-                               AIO_CLIENT_UNSPECIFIED, NULL);
+                               AIO_CLIENT_EXTERNAL, NULL);
     }
     if (s->cmd_vrings) {
         for (i = 0; i < vs->conf.num_queues && s->cmd_vrings[i]; i++) {
             aio_set_event_notifier(s->ctx, &s->cmd_vrings[i]->host_notifier,
-                                   AIO_CLIENT_UNSPECIFIED, NULL);
+                                   AIO_CLIENT_EXTERNAL, NULL);
         }
     }
 }
@@ -296,12 +296,12 @@ void virtio_scsi_dataplane_stop(VirtIOSCSI *s)
     aio_context_acquire(s->ctx);
 
     aio_set_event_notifier(s->ctx, &s->ctrl_vring->host_notifier,
-                           AIO_CLIENT_UNSPECIFIED, NULL);
+                           AIO_CLIENT_EXTERNAL, NULL);
     aio_set_event_notifier(s->ctx, &s->event_vring->host_notifier,
-                           AIO_CLIENT_UNSPECIFIED, NULL);
+                           AIO_CLIENT_EXTERNAL, NULL);
     for (i = 0; i < vs->conf.num_queues; i++) {
         aio_set_event_notifier(s->ctx, &s->cmd_vrings[i]->host_notifier,
-                               AIO_CLIENT_UNSPECIFIED, NULL);
+                               AIO_CLIENT_EXTERNAL, NULL);
     }
 
     blk_drain_all(); /* ensure there are no in-flight requests */
-- 
2.5.3