From patchwork Wed Nov 16 13:53:27 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: 13045242 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 01B10C4332F for ; Wed, 16 Nov 2022 13:55:06 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ovIrL-0007if-E8; Wed, 16 Nov 2022 08:53:47 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ovIrH-0007Y4-Oz for qemu-devel@nongnu.org; Wed, 16 Nov 2022 08:53:43 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ovIrF-0002jY-N6 for qemu-devel@nongnu.org; Wed, 16 Nov 2022 08:53:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1668606821; 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=QH/+/7UJYS5MtViHT79nNUCSFC9rW6fu+qCQmkWOUeI=; b=YfPbvYO8EMnfVsKYVwmSolzmX9h6H2K83iexc0bR2JYBBmXt87i3Fc57zp4zegEBAaNXfx HwfgzXoUINqbwH0kf+US0iWpKOlCl3cI5+hbIqRYmocrElgVM58nOu+SEJMWfNf7h2G0jj 9Gi2t1ufI6irlEiM7LMN+HbdN0osG0g= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-172-afC2oFH9MFiU6PQnct7Kog-1; Wed, 16 Nov 2022 08:53:36 -0500 X-MC-Unique: afC2oFH9MFiU6PQnct7Kog-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9D5E43C10688; Wed, 16 Nov 2022 13:53:35 +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 5277340E80E3; Wed, 16 Nov 2022 13:53:35 +0000 (UTC) From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Cc: Kevin Wolf , Hanna Reitz , John Snow , Paolo Bonzini , Vladimir Sementsov-Ogievskiy , Stefan Hajnoczi , Fam Zheng , Eric Blake , qemu-devel@nongnu.org, Emanuele Giuseppe Esposito Subject: [PATCH 2/6] block: assert that BlockDriver->bdrv_co_{amend/create} are called with graph rdlock taken Date: Wed, 16 Nov 2022 08:53:27 -0500 Message-Id: <20221116135331.3052923-3-eesposit@redhat.com> In-Reply-To: <20221116135331.3052923-1-eesposit@redhat.com> References: <20221116135331.3052923-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 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: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Both functions are only called by Job->run() callbacks, therefore they must take the lock in the *_run() implementation. Signed-off-by: Emanuele Giuseppe Esposito --- block/amend.c | 1 + block/create.c | 1 + include/block/block_int-common.h | 2 ++ 3 files changed, 4 insertions(+) diff --git a/block/amend.c b/block/amend.c index f696a006e3..a155b6889b 100644 --- a/block/amend.c +++ b/block/amend.c @@ -45,6 +45,7 @@ static int coroutine_fn blockdev_amend_run(Job *job, Error **errp) { BlockdevAmendJob *s = container_of(job, BlockdevAmendJob, common); int ret; + GRAPH_RDLOCK_GUARD(); job_progress_set_remaining(&s->common, 1); ret = s->bs->drv->bdrv_co_amend(s->bs, s->opts, s->force, errp); diff --git a/block/create.c b/block/create.c index 4df43f11f4..4048d71265 100644 --- a/block/create.c +++ b/block/create.c @@ -43,6 +43,7 @@ static int coroutine_fn blockdev_create_run(Job *job, Error **errp) int ret; GLOBAL_STATE_CODE(); + GRAPH_RDLOCK_GUARD(); job_progress_set_remaining(&s->common, 1); ret = s->drv->bdrv_co_create(s->opts, errp); diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index d45961a1d1..1e9bb91c98 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -251,6 +251,7 @@ struct BlockDriver { Error **errp); void (*bdrv_close)(BlockDriverState *bs); + /* Called with graph rdlock taken */ int coroutine_fn (*bdrv_co_create)(BlockdevCreateOptions *opts, Error **errp); /* Called with graph rdlock taken */ @@ -471,6 +472,7 @@ struct BlockDriver { int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename); + /* Called with graph rdlock taken. */ int coroutine_fn (*bdrv_co_amend)(BlockDriverState *bs, BlockdevAmendOptions *opts, bool force,