From patchwork Mon Jul 25 12:21:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Emanuele Giuseppe Esposito X-Patchwork-Id: 12928008 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8ABAFC433EF for ; Mon, 25 Jul 2022 12:38:44 +0000 (UTC) Received: from localhost ([::1]:46400 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oFxMB-0002QE-4o for qemu-devel@archiver.kernel.org; Mon, 25 Jul 2022 08:38:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48692) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oFx5c-0002Yu-DM for qemu-devel@nongnu.org; Mon, 25 Jul 2022 08:21:38 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:22961) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oFx5Y-00062e-QG for qemu-devel@nongnu.org; Mon, 25 Jul 2022 08:21:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1658751691; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=f1IynO/DIKz5PQrjl6tEhXmKZBpuDkDzoYvqzGnYbhk=; b=GGOq+F8746zqjkBjVCXKLt5R95QOr6S7GpVDsHn64asIjskFLkViNDZd7cSudoeYm87LlI AMizI1JiAz0gkOcbkIUMrDsdnRtG3mEm/C0V0/lRoGjdfbeub6Hq3w29zQU++3Fo+Wgt2a X1gUrtEh314lMaS7KQIkBw7ZAKI/EE8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-544-RdzDLaDHMR-csg0yLEZNIw-1; Mon, 25 Jul 2022 08:21:25 -0400 X-MC-Unique: RdzDLaDHMR-csg0yLEZNIw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1D4D010AF82E; Mon, 25 Jul 2022 12:21:23 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id CD46D9458A; Mon, 25 Jul 2022 12:21:22 +0000 (UTC) From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Cc: Kevin Wolf , Hanna Reitz , Paolo Bonzini , John Snow , Vladimir Sementsov-Ogievskiy , Markus Armbruster , Stefan Hajnoczi , qemu-devel@nongnu.org, Emanuele Giuseppe Esposito Subject: [PATCH v2 01/11] block.c: assert bs->aio_context is written under BQL and drains Date: Mon, 25 Jul 2022 08:21:10 -0400 Message-Id: <20220725122120.309236-2-eesposit@redhat.com> In-Reply-To: <20220725122120.309236-1-eesposit@redhat.com> References: <20220725122120.309236-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eesposit@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Also here ->aio_context is read by I/O threads and written under BQL. Reviewed-by: Hanna Reitz Signed-off-by: Emanuele Giuseppe Esposito Reviewed-by: Kevin Wolf --- block.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block.c b/block.c index 7559965dbc..58a9cfc8b7 100644 --- a/block.c +++ b/block.c @@ -7282,6 +7282,7 @@ static void bdrv_detach_aio_context(BlockDriverState *bs) if (bs->quiesce_counter) { aio_enable_external(bs->aio_context); } + assert_bdrv_graph_writable(bs); bs->aio_context = NULL; } @@ -7295,6 +7296,7 @@ static void bdrv_attach_aio_context(BlockDriverState *bs, aio_disable_external(new_context); } + assert_bdrv_graph_writable(bs); bs->aio_context = new_context; if (bs->drv && bs->drv->bdrv_attach_aio_context) {