From patchwork Thu Jan 30 21:44:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Reitz X-Patchwork-Id: 1231647 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=bmhMj6Kv; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 487v8n6Xthz9sNx for ; Fri, 31 Jan 2020 08:47:36 +1100 (AEDT) Received: from localhost ([::1]:39718 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ixHet-00086H-M6 for incoming@patchwork.ozlabs.org; Thu, 30 Jan 2020 16:47:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33101) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ixHcG-0004S9-4F for qemu-devel@nongnu.org; Thu, 30 Jan 2020 16:44:49 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ixHcF-0003OJ-0L for qemu-devel@nongnu.org; Thu, 30 Jan 2020 16:44:48 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:33558 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ixHcE-0003M5-RT for qemu-devel@nongnu.org; Thu, 30 Jan 2020 16:44:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1580420686; 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=YkqxlVGYqeQ2kN5TdDYnJb9onnZj65OuIAqL7EzEkck=; b=bmhMj6KvLbCjV3B6JhlnJaTk1t6tzCjpRXPEjOqMyUPXOg+ZdXjaOo0Aomucg+iBJXZt0x +Iuk+mX1eIA/ImMcTr3r+rV8PKjrcVaPO8fPQTEQ1V6aWewWDb88nxlYz0c7lV9gL8nhW9 4LUT9trzLCF/rKWczJUcHcoTyVSPCsA= 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-344-JBtIOu1cNbmREPExzFMkkg-1; Thu, 30 Jan 2020 16:44:41 -0500 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 D5EE81005F76; Thu, 30 Jan 2020 21:44:40 +0000 (UTC) Received: from localhost (ovpn-204-145.brq.redhat.com [10.40.204.145]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6CDE360BE1; Thu, 30 Jan 2020 21:44:40 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH v3 03/21] block: Drop bdrv_is_first_non_filter() Date: Thu, 30 Jan 2020 22:44:13 +0100 Message-Id: <20200130214431.333510-4-mreitz@redhat.com> In-Reply-To: <20200130214431.333510-1-mreitz@redhat.com> References: <20200130214431.333510-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: JBtIOu1cNbmREPExzFMkkg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/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: Kevin Wolf , Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" It is unused now. (And it was ugly because it needed to explore all BDS chains from the top.) Signed-off-by: Max Reitz Reviewed-by: Vladimir Sementsov-Ogievskiy --- block.c | 26 -------------------------- include/block/block.h | 1 - 2 files changed, 27 deletions(-) diff --git a/block.c b/block.c index 99ce26d64d..6f58a4900f 100644 --- a/block.c +++ b/block.c @@ -6212,32 +6212,6 @@ bool bdrv_recurse_is_first_non_filter(BlockDriverState *bs, return false; } -/* This function checks if the candidate is the first non filter bs down it's - * bs chain. Since we don't have pointers to parents it explore all bs chains - * from the top. Some filters can choose not to pass down the recursion. - */ -bool bdrv_is_first_non_filter(BlockDriverState *candidate) -{ - BlockDriverState *bs; - BdrvNextIterator it; - - /* walk down the bs forest recursively */ - for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) { - bool perm; - - /* try to recurse in this top level bs */ - perm = bdrv_recurse_is_first_non_filter(bs, candidate); - - /* candidate is the first non filter */ - if (perm) { - bdrv_next_cleanup(&it); - return true; - } - } - - return false; -} - BlockDriverState *check_to_replace_node(BlockDriverState *parent_bs, const char *node_name, Error **errp) { diff --git a/include/block/block.h b/include/block/block.h index e9dcfef7fa..8f6a0cad9c 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -404,7 +404,6 @@ int bdrv_amend_options(BlockDriverState *bs_new, QemuOpts *opts, /* external snapshots */ bool bdrv_recurse_is_first_non_filter(BlockDriverState *bs, BlockDriverState *candidate); -bool bdrv_is_first_non_filter(BlockDriverState *candidate); /* check if a named node can be replaced when doing drive-mirror */ BlockDriverState *check_to_replace_node(BlockDriverState *parent_bs,