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Wed, 22 Apr 2020 11:21:51 -0400 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-476--jlpTYFfNrKlgNGIiXmJjQ-1; Wed, 22 Apr 2020 11:21:47 -0400 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 9F95F100CCC0; Wed, 22 Apr 2020 15:21:46 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-114-212.ams2.redhat.com [10.36.114.212]) by smtp.corp.redhat.com (Postfix) with ESMTP id 29629600DB; Wed, 22 Apr 2020 15:21:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587568909; 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=osz8ZcSPns4G2Rbft0Y88FS+AC3g3bBS33pQ2b7Lfv8=; b=fwVfoVs3rtu23VQnH70AhvALVmRRD/2KbjJCs6zwnrpvH4JLhU+aFZRZKhLgeivuYPzX1F LIdpJPLkVKg9qX0apxy5EAPQdgM9lgM5mwFtjm9LvNwr8IhvZOdDkxDQtj0eMTXUSRIuDZ Tf+/CZUbPFlueZDxcEKu8oMTbpPNApQ= X-MC-Unique: -jlpTYFfNrKlgNGIiXmJjQ-1 From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH v5 5/9] raw-format: Support BDRV_REQ_ZERO_WRITE for truncate Date: Wed, 22 Apr 2020 17:21:25 +0200 Message-Id: <20200422152129.167074-6-kwolf@redhat.com> In-Reply-To: <20200422152129.167074-1-kwolf@redhat.com> References: <20200422152129.167074-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.139.110.120; envelope-from=kwolf@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/22 04:15:03 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" 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: Eric Blake Reviewed-by: Max Reitz --- 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(BlockDriverStat= e *bs, int64_t offset, =20 s->size =3D offset; offset +=3D s->offset; - return bdrv_co_truncate(bs->file, offset, exact, prealloc, 0, errp); + return bdrv_co_truncate(bs->file, offset, exact, prealloc, flags, errp= ); } =20 static void raw_eject(BlockDriverState *bs, bool eject_flag) @@ -445,6 +445,8 @@ static int raw_open(BlockDriverState *bs, QDict *option= s, int flags, bs->supported_zero_flags =3D 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 =3D bs->file->bs->supported_truncate_flag= s & + BDRV_REQ_ZERO_WRITE; =20 if (bs->probed && !bdrv_is_read_only(bs)) { bdrv_refresh_filename(bs->file->bs); --=20 2.25.3