diff options
| -rw-r--r-- | block/nbd.c | 2 | ||||
| -rw-r--r-- | include/block/nbd.h | 2 | ||||
| -rw-r--r-- | nbd/client-connection.c | 8 |
3 files changed, 9 insertions, 3 deletions
diff --git a/block/nbd.c b/block/nbd.c index 8caeafc..bf2e939 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -364,7 +364,7 @@ static int coroutine_fn nbd_co_do_establish_connection(BlockDriverState *bs, assert(!s->ioc); - s->ioc = nbd_co_establish_connection(s->conn, &s->info, errp); + s->ioc = nbd_co_establish_connection(s->conn, &s->info, true, errp); if (!s->ioc) { return -ECONNREFUSED; } diff --git a/include/block/nbd.h b/include/block/nbd.h index 10c8a0b..78d101b 100644 --- a/include/block/nbd.h +++ b/include/block/nbd.h @@ -420,7 +420,7 @@ void nbd_client_connection_release(NBDClientConnection *conn); QIOChannel *coroutine_fn nbd_co_establish_connection(NBDClientConnection *conn, NBDExportInfo *info, - Error **errp); + bool blocking, Error **errp); void coroutine_fn nbd_co_establish_connection_cancel(NBDClientConnection *conn); diff --git a/nbd/client-connection.c b/nbd/client-connection.c index 955edaf..7123b1e 100644 --- a/nbd/client-connection.c +++ b/nbd/client-connection.c @@ -266,6 +266,8 @@ void nbd_client_connection_release(NBDClientConnection *conn) * otherwise the thread is not running, so start a thread and wait for * completion * + * If @blocking is false, don't wait for the thread, return immediately. + * * If @info is not NULL, also do nbd-negotiation after successful connection. * In this case info is used only as out parameter, and is fully initialized by * nbd_co_establish_connection(). "IN" fields of info as well as related only to @@ -274,7 +276,7 @@ void nbd_client_connection_release(NBDClientConnection *conn) */ QIOChannel *coroutine_fn nbd_co_establish_connection(NBDClientConnection *conn, NBDExportInfo *info, - Error **errp) + bool blocking, Error **errp) { QemuThread thread; @@ -315,6 +317,10 @@ nbd_co_establish_connection(NBDClientConnection *conn, NBDExportInfo *info, connect_thread_func, conn, QEMU_THREAD_DETACHED); } + if (!blocking) { + return NULL; + } + conn->wait_co = qemu_coroutine_self(); } |