From patchwork Thu Apr 23 15:01:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 284012 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=-6.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 04199C55186 for ; Thu, 23 Apr 2020 15:03:47 +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 C66C320857 for ; Thu, 23 Apr 2020 15:03:46 +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="S+El0WMI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C66C320857 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]:45110 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jRdOD-00075i-P3 for qemu-devel@archiver.kernel.org; Thu, 23 Apr 2020 11:03:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41022) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jRdMU-00055b-5u for qemu-devel@nongnu.org; Thu, 23 Apr 2020 11:01:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jRdMR-0005lE-9O for qemu-devel@nongnu.org; Thu, 23 Apr 2020 11:01:57 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:57818 helo=us-smtp-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 1jRdMQ-0005i5-P9 for qemu-devel@nongnu.org; Thu, 23 Apr 2020 11:01:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587654113; 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=32UpSSGi1jePKA5vYV6SclTthXT7d3oGma6MvCeI5vQ=; b=S+El0WMIqBCKZSu9eHeHQe+5f5SRptcBEhK/eO+PHsZPnwtgBQA9z5kEM2YW6C/q/wzL2v 5urEPykW9+W5lNaRAreiL0qZ/OVb1wTGSFIQaUJ2fpGvSCoAET041EMk/8ufSh01QawUKN XBIAEsHU8gvhBYUMoHkBB5HDbfPczfg= 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-467-F5ZO_RbXO5yK6CPe1pdpqw-1; Thu, 23 Apr 2020 11:01:49 -0400 X-MC-Unique: F5ZO_RbXO5yK6CPe1pdpqw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 92898107ACCD; Thu, 23 Apr 2020 15:01:48 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-114-28.ams2.redhat.com [10.36.114.28]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9C9A860F8A; Thu, 23 Apr 2020 15:01:45 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH v6 05/10] raw-format: Support BDRV_REQ_ZERO_WRITE for truncate Date: Thu, 23 Apr 2020 17:01:22 +0200 Message-Id: <20200423150127.142609-6-kwolf@redhat.com> In-Reply-To: <20200423150127.142609-1-kwolf@redhat.com> References: <20200423150127.142609-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=207.211.31.120; envelope-from=kwolf@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/23 06:43:51 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: kwolf@redhat.com, vsementsov@virtuozzo.com, berto@igalia.com, qemu-devel@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The raw format driver can simply forward the flag and let its bs->file child take care of actually providing the zeros. Signed-off-by: Kevin Wolf Reviewed-by: Max Reitz Reviewed-by: Eric Blake --- block/raw-format.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/block/raw-format.c b/block/raw-format.c index 3465c9a865..351f2d91c6 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -387,7 +387,7 @@ static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset, s->size = offset; offset += s->offset; - return bdrv_co_truncate(bs->file, offset, exact, prealloc, 0, errp); + return bdrv_co_truncate(bs->file, offset, exact, prealloc, flags, errp); } static void raw_eject(BlockDriverState *bs, bool eject_flag) @@ -445,6 +445,8 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED | ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) & bs->file->bs->supported_zero_flags); + bs->supported_truncate_flags = bs->file->bs->supported_truncate_flags & + BDRV_REQ_ZERO_WRITE; if (bs->probed && !bdrv_is_read_only(bs)) { bdrv_refresh_filename(bs->file->bs);