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=-9.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 99CC1C43461 for ; Tue, 1 Sep 2020 14:45:15 +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 643AC21D6C for ; Tue, 1 Sep 2020 14:45:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="CQazqJty" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 643AC21D6C 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]:59668 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kD7X8-00029S-J9 for qemu-devel@archiver.kernel.org; Tue, 01 Sep 2020 10:45:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33656) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kD7Mu-00075y-W2 for qemu-devel@nongnu.org; Tue, 01 Sep 2020 10:34:41 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:58830 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kD7Mt-00073p-Gg for qemu-devel@nongnu.org; Tue, 01 Sep 2020 10:34:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1598970878; 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=Un6URJ/m29Y7miNJSMK8zT0M2J2uvHrCA+SA4BG5GhI=; b=CQazqJtyF/pzYKB+RUf5ZF6NddZ0JVThIhn0jmVpGWwaBkn4HFxWxIjrZWcDR4lWyTL1V7 Pd/tuKp+oomXii7vHSO4ri64ogc11KpKkPHbY3VceMG+He4vng1xFKr5XpcamVj8cc2xGH uuN7cxX7L/C0yhjA/DbevtztAVzyuY4= 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-275-TUKRFxJqNOGl95lJUmRDDA-1; Tue, 01 Sep 2020 10:34:35 -0400 X-MC-Unique: TUKRFxJqNOGl95lJUmRDDA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CFFAE64081; Tue, 1 Sep 2020 14:34:33 +0000 (UTC) Received: from localhost (ovpn-113-83.ams2.redhat.com [10.36.113.83]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 75F057C564; Tue, 1 Sep 2020 14:34:33 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH v8 03/43] block: bdrv_cow_child() for bdrv_has_zero_init() Date: Tue, 1 Sep 2020 16:33:44 +0200 Message-Id: <20200901143424.884735-4-mreitz@redhat.com> In-Reply-To: <20200901143424.884735-1-mreitz@redhat.com> References: <20200901143424.884735-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mreitz@redhat.com X-Mimecast-Spam-Score: 0.0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=207.211.31.81; envelope-from=mreitz@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/01 02:08:15 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Andrey Shinkevich , Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" bdrv_has_zero_init() should use bdrv_cow_child() if it wants to check whether the given BDS has a COW backing file. Signed-off-by: Max Reitz Reviewed-by: Andrey Shinkevich Reviewed-by: Kevin Wolf --- block.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block.c b/block.c index b162142609..656baa521e 100644 --- a/block.c +++ b/block.c @@ -5415,7 +5415,7 @@ int bdrv_has_zero_init(BlockDriverState *bs) /* If BS is a copy on write image, it is initialized to the contents of the base image, which may not be zeroes. */ - if (bs->backing) { + if (bdrv_cow_child(bs)) { return 0; } if (bs->drv->bdrv_has_zero_init) { -- 2.26.2