From mboxrd@z Thu Jan 1 00:00:00 1970 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 6E2E3C77B7E for ; Thu, 25 May 2023 12:49:42 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q2AO6-0000Fo-QG; Thu, 25 May 2023 08:48:14 -0400 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 1q2ANw-0008Gs-WB for qemu-devel@nongnu.org; Thu, 25 May 2023 08:48:05 -0400 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 1q2ANs-00021b-TI for qemu-devel@nongnu.org; Thu, 25 May 2023 08:48:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1685018858; 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=Y0K5Asqj4Uud3Vi5s3FniNSdo4dtDJ/tUWbyu/pEXTY=; b=He4v5UAFIHqDGzI6ZOWjuSrYFQ6ChCwi1EUP513gmY2zHbDGb4bWkL/aguGq0jeVsbVTvX TYJrkzeaM+fRNem9IjshpEPAGhQrIhsXeeVaje4pyrOyswaAMlVIbWKctbSxSnXg6YvFU3 ob1/h/1Hr4JlcQ3M5gTO9PUvSvPlh8Y= 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-356-82ly8gzHN_elPrjMTMN3SA-1; Thu, 25 May 2023 08:47:34 -0400 X-MC-Unique: 82ly8gzHN_elPrjMTMN3SA-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 532F73C13501; Thu, 25 May 2023 12:47:34 +0000 (UTC) Received: from merkur.fritz.box (unknown [10.39.194.166]) by smtp.corp.redhat.com (Postfix) with ESMTP id 485278162; Thu, 25 May 2023 12:47:33 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, stefanha@redhat.com, hreitz@redhat.com, eblake@redhat.com, qemu-devel@nongnu.org Subject: [PATCH 09/12] block: Take AioContext lock in bdrv_open_driver() Date: Thu, 25 May 2023 14:47:10 +0200 Message-Id: <20230525124713.401149-10-kwolf@redhat.com> In-Reply-To: <20230525124713.401149-1-kwolf@redhat.com> References: <20230525124713.401149-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Received-SPF: pass client-ip=170.10.133.124; envelope-from=kwolf@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, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org bdrv_refresh_total_sectors() and bdrv_refresh_limits() expect to be called under the AioContext lock of the node. Take the lock. Signed-off-by: Kevin Wolf --- block.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block.c b/block.c index be9ae364fb..e368a43761 100644 --- a/block.c +++ b/block.c @@ -1613,6 +1613,7 @@ static int no_coroutine_fn GRAPH_UNLOCKED bdrv_open_driver(BlockDriverState *bs, BlockDriver *drv, const char *node_name, QDict *options, int open_flags, Error **errp) { + AioContext *ctx; Error *local_err = NULL; int i, ret; GLOBAL_STATE_CODE(); @@ -1660,15 +1661,21 @@ bdrv_open_driver(BlockDriverState *bs, BlockDriver *drv, const char *node_name, bs->supported_read_flags |= BDRV_REQ_REGISTERED_BUF; bs->supported_write_flags |= BDRV_REQ_REGISTERED_BUF; + /* Get the context after .bdrv_open, it can change the context */ + ctx = bdrv_get_aio_context(bs); + aio_context_acquire(ctx); + ret = bdrv_refresh_total_sectors(bs, bs->total_sectors); if (ret < 0) { error_setg_errno(errp, -ret, "Could not refresh total sector count"); + aio_context_release(ctx); return ret; } bdrv_graph_rdlock_main_loop(); bdrv_refresh_limits(bs, NULL, &local_err); bdrv_graph_rdunlock_main_loop(); + aio_context_release(ctx); if (local_err) { error_propagate(errp, local_err); -- 2.40.1