From nobody Mon Feb 9 17:36:53 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 164632217680418.965490233894116; Thu, 3 Mar 2022 07:42:56 -0800 (PST) Received: from localhost ([::1]:42576 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nPnbT-0007pV-H2 for importer@patchew.org; Thu, 03 Mar 2022 10:42:55 -0500 Received: from eggs.gnu.org ([209.51.188.92]:47250) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nPnEP-0007J9-GE for qemu-devel@nongnu.org; Thu, 03 Mar 2022 10:19:07 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:56624) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nPnEM-0006hy-VQ for qemu-devel@nongnu.org; Thu, 03 Mar 2022 10:19:05 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-441-F5NGNfGHMtWL1HrDFTZffA-1; Thu, 03 Mar 2022 10:18:59 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1D3051854E30; Thu, 3 Mar 2022 15:18:58 +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 E7C3F7C03F; Thu, 3 Mar 2022 15:18:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1646320742; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kWRCNrctfNRH2LoFNQMoY2Bsx94t1QDitJXy5XLZ6/Q=; b=bPLyfUUBdg6nENun5efEgiHL4ovjBRIkz5VmGSbtRrwBbFKJhjlaZPNDBIhex8Y2y7wJpm QQh/PW/0xQyXI9zWnjSWzDLNKiZ3/n2ePCdt0pndT8ZI97TM/DFW1QiKBuG13t5ihrXUDF gU+rfqJ5agx1GPRuLWDqWn/JPITY1nE= X-MC-Unique: F5NGNfGHMtWL1HrDFTZffA-1 From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Subject: [PATCH v8 23/31] block/copy-before-write.h: global state API + assertions Date: Thu, 3 Mar 2022 10:16:08 -0500 Message-Id: <20220303151616.325444-24-eesposit@redhat.com> In-Reply-To: <20220303151616.325444-1-eesposit@redhat.com> References: <20220303151616.325444-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eesposit@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=eesposit@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 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_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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: , Cc: Kevin Wolf , Fam Zheng , Vladimir Sementsov-Ogievskiy , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Juan Quintela , qemu-devel@nongnu.org, John Snow , Emanuele Giuseppe Esposito , Richard Henderson , Markus Armbruster , "Dr. David Alan Gilbert" , Eduardo Habkost , Hanna Reitz , Stefan Hajnoczi , Paolo Bonzini , Eric Blake Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1646322177473100001 Content-Type: text/plain; charset="utf-8" copy-before-write functions always run under BQL. Signed-off-by: Emanuele Giuseppe Esposito --- block/copy-before-write.c | 2 ++ block/copy-before-write.h | 7 +++++++ 2 files changed, 9 insertions(+) diff --git a/block/copy-before-write.c b/block/copy-before-write.c index c30a5ff8de..80b7684dba 100644 --- a/block/copy-before-write.c +++ b/block/copy-before-write.c @@ -223,6 +223,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *sou= rce, QDict *opts; =20 assert(source->total_sectors =3D=3D target->total_sectors); + GLOBAL_STATE_CODE(); =20 opts =3D qdict_new(); qdict_put_str(opts, "driver", "copy-before-write"); @@ -245,6 +246,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *sou= rce, =20 void bdrv_cbw_drop(BlockDriverState *bs) { + GLOBAL_STATE_CODE(); bdrv_drop_filter(bs, &error_abort); bdrv_unref(bs); } diff --git a/block/copy-before-write.h b/block/copy-before-write.h index 51847e711a..6e72bb25e9 100644 --- a/block/copy-before-write.h +++ b/block/copy-before-write.h @@ -29,6 +29,13 @@ #include "block/block_int.h" #include "block/block-copy.h" =20 +/* + * Global state (GS) API. These functions run under the BQL. + * + * See include/block/block-global-state.h for more information about + * the GS API. + */ + BlockDriverState *bdrv_cbw_append(BlockDriverState *source, BlockDriverState *target, const char *filter_node_name, --=20 2.31.1