[v3] block: remove aio_disable_external() API

[PATCH v3 04/20] block/export: only acquire AioContext once for vhost_user_server_stop()

Stefan Hajnoczi posted 20 patches 2 years, 9 months ago

Diff against v1 v2 v4 v5 v6
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Maintainers: Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Xie Yongji <xieyongji@bytedance.com>, Coiby Xu <Coiby.Xu@gmail.com>, Fam Zheng <fam@euphon.net>, Aarushi Mehta <mehta.aaru20@gmail.com>, Julia Suvorova <jusual@redhat.com>, Stefano Garzarella <sgarzare@redhat.com>, Ronnie Sahlberg <ronniesahlberg@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>, Peter Lieven <pl@kamp.de>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, "Richard W.M. Jones" <rjones@redhat.com>, Stefan Weil <sw@weilnetz.de>, Stefano Stabellini <sstabellini@kernel.org>, Anthony Perard <anthony.perard@citrix.com>, Paul Durrant <paul@xen.org>, "Michael S. Tsirkin" <mst@redhat.com>, David Woodhouse <dwmw2@infradead.org>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Juan Quintela <quintela@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>

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[PATCH v3 04/20] block/export: only acquire AioContext once for vhost_user_server_stop()

Posted by Stefan Hajnoczi 2 years, 9 months ago

vhost_user_server_stop() uses AIO_WAIT_WHILE(). AIO_WAIT_WHILE()
requires that AioContext is only acquired once.

Since blk_exp_request_shutdown() already acquires the AioContext it
shouldn't be acquired again in vhost_user_server_stop().

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 util/vhost-user-server.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/util/vhost-user-server.c b/util/vhost-user-server.c
index 40f36ea214..5b6216069c 100644
--- a/util/vhost-user-server.c
+++ b/util/vhost-user-server.c
@@ -346,10 +346,9 @@ static void vu_accept(QIONetListener *listener, QIOChannelSocket *sioc,
     aio_context_release(server->ctx);
 }
 
+/* server->ctx acquired by caller */
 void vhost_user_server_stop(VuServer *server)
 {
-    aio_context_acquire(server->ctx);
-
     qemu_bh_delete(server->restart_listener_bh);
     server->restart_listener_bh = NULL;
 
@@ -366,8 +365,6 @@ void vhost_user_server_stop(VuServer *server)
         AIO_WAIT_WHILE(server->ctx, server->co_trip);
     }
 
-    aio_context_release(server->ctx);
-
     if (server->listener) {
         qio_net_listener_disconnect(server->listener);
         object_unref(OBJECT(server->listener));
-- 
2.39.2