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 X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01FA2C433DB for ; Tue, 9 Mar 2021 16:27:52 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8A83061574 for ; Tue, 9 Mar 2021 16:27:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8A83061574 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42306 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lJfD4-0004nj-Mq for qemu-devel@archiver.kernel.org; Tue, 09 Mar 2021 11:27:50 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:36668) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lJefL-0004J5-HE for qemu-devel@nongnu.org; Tue, 09 Mar 2021 10:52:59 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:24514) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lJef1-00012U-SY for qemu-devel@nongnu.org; Tue, 09 Mar 2021 10:52:59 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615305159; 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=/aC3KvlsNRw6J6FsQ+Xu0A6KIiqvgUT2v8PeO5Qy6fE=; b=Ts12yn4TXVDWVVmHsbpiNDqBjZ9dMwjQu5iorJd7jFeFmUUsJck0b6EIZAOwsztA+VRssn pC099S9t6XPI/uA3Tv7wPqd52Y5uVLqaUKcBNVliRqOxogchepjMtefOU67kmclvGN/zFc ZA1r97bUlJQJiJbdAUmrEU+sXJL1cs8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-63-2yX-GDo-P5-x7-BJO9YABg-1; Tue, 09 Mar 2021 10:52:34 -0500 X-MC-Unique: 2yX-GDo-P5-x7-BJO9YABg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A6DB41018F72; Tue, 9 Mar 2021 15:52:32 +0000 (UTC) Received: from blue.redhat.com (ovpn-112-36.phx2.redhat.com [10.3.112.36]) by smtp.corp.redhat.com (Postfix) with ESMTP id 189AD19C46; Tue, 9 Mar 2021 15:52:32 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Subject: [PULL 15/17] block/qcow2: simplify qcow2_co_invalidate_cache() Date: Tue, 9 Mar 2021 09:52:00 -0600 Message-Id: <20210309155202.1312571-16-eblake@redhat.com> In-Reply-To: <20210309155202.1312571-1-eblake@redhat.com> References: <20210309155202.1312571-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eblake@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.251, 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_H3=0.001, RCVD_IN_MSPIKE_WL=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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Vladimir Sementsov-Ogievskiy , Alberto Garcia , "open list:qcow2" , Greg Kurz , Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Vladimir Sementsov-Ogievskiy qcow2_do_open correctly sets errp on each failure path. So, we can simplify code in qcow2_co_invalidate_cache() and drop explicit error propagation. Add ERRP_GUARD() as mandated by the documentation in include/qapi/error.h so that error_prepend() is actually called even if errp is &error_fatal. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Alberto Garcia Reviewed-by: Greg Kurz Message-Id: <20210202124956.63146-13-vsementsov@virtuozzo.com> Signed-off-by: Eric Blake --- block/qcow2.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index 4aa0890166e3..a1dee95dea6c 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -2716,11 +2716,11 @@ static void qcow2_close(BlockDriverState *bs) static void coroutine_fn qcow2_co_invalidate_cache(BlockDriverState *bs, Error **errp) { + ERRP_GUARD(); BDRVQcow2State *s = bs->opaque; int flags = s->flags; QCryptoBlock *crypto = NULL; QDict *options; - Error *local_err = NULL; int ret; /* @@ -2738,16 +2738,11 @@ static void coroutine_fn qcow2_co_invalidate_cache(BlockDriverState *bs, flags &= ~BDRV_O_INACTIVE; qemu_co_mutex_lock(&s->lock); - ret = qcow2_do_open(bs, options, flags, &local_err); + ret = qcow2_do_open(bs, options, flags, errp); qemu_co_mutex_unlock(&s->lock); qobject_unref(options); - if (local_err) { - error_propagate_prepend(errp, local_err, - "Could not reopen qcow2 layer: "); - bs->drv = NULL; - return; - } else if (ret < 0) { - error_setg_errno(errp, -ret, "Could not reopen qcow2 layer"); + if (ret < 0) { + error_prepend(errp, "Could not reopen qcow2 layer: "); bs->drv = NULL; return; } -- 2.30.1