From patchwork Mon Oct 25 10:17:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Emanuele Giuseppe Esposito X-Patchwork-Id: 1545667 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.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=NEUdVWHa; dkim-atps=neutral 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=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4HdBDh0bbTz9shn for ; Mon, 25 Oct 2021 21:35:32 +1100 (AEDT) Received: from localhost ([::1]:39950 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mexKC-0001N2-3q for incoming@patchwork.ozlabs.org; Mon, 25 Oct 2021 06:35:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49120) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mex4G-0005T7-Fg for qemu-devel@nongnu.org; Mon, 25 Oct 2021 06:19:02 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:48301) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mex4C-0006zq-8e for qemu-devel@nongnu.org; Mon, 25 Oct 2021 06:18:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1635157134; 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=2jt5on/1umKTcU1QCZEpYXR6ISNtEtmftY5cf/OgrOI=; b=NEUdVWHanxiyMqQuQaJs1/UUQmWGQBOggLKaupHetFIfu55fQZLdSpY4gQ6UrZ6UWyhWoF jONC7IgJAcJR6H7xbwHeDvlSMaBQV8KEv29rQQ/W+XHgQMZWlzv5L2xZ/ryw9agJz/eHL2 QfwDXjNMrcxZHkSqHQnRQ9rri1NIqXY= 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-248-rgDfifrIOpunqfEiK2tjrA-1; Mon, 25 Oct 2021 06:18:51 -0400 X-MC-Unique: rgDfifrIOpunqfEiK2tjrA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 64F75101B4A0; Mon, 25 Oct 2021 10:18:50 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 31BE517CE1; Mon, 25 Oct 2021 10:18:49 +0000 (UTC) From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Subject: [PATCH v4 14/25] include/systemu/blockdev.h: global state API Date: Mon, 25 Oct 2021 06:17:24 -0400 Message-Id: <20211025101735.2060852-15-eesposit@redhat.com> In-Reply-To: <20211025101735.2060852-1-eesposit@redhat.com> References: <20211025101735.2060852-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eesposit@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.133.124; envelope-from=eesposit@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, 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 , Fam Zheng , Vladimir Sementsov-Ogievskiy , =?utf-8?q?Daniel_P?= =?utf-8?q?=2E_Berrang=C3=A9?= , Eduardo Habkost , Juan Quintela , qemu-devel@nongnu.org, John Snow , Emanuele Giuseppe Esposito , Richard Henderson , Markus Armbruster , "Dr. David Alan Gilbert" , Hanna Reitz , Stefan Hajnoczi , Paolo Bonzini , Eric Blake Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" blockdev functions run always under the BQL lock. Signed-off-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi --- include/sysemu/blockdev.h | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h index 960b54d320..b07f15df09 100644 --- a/include/sysemu/blockdev.h +++ b/include/sysemu/blockdev.h @@ -13,9 +13,6 @@ #include "block/block.h" #include "qemu/queue.h" -void blockdev_mark_auto_del(BlockBackend *blk); -void blockdev_auto_del(BlockBackend *blk); - typedef enum { IF_DEFAULT = -1, /* for use with drive_add() only */ /* @@ -40,6 +37,16 @@ struct DriveInfo { QTAILQ_ENTRY(DriveInfo) next; }; +/* + * Global state (GS) API. These functions run under the BQL lock. + * + * See include/block/block-global-state.h for more information about + * the GS API. + */ + +void blockdev_mark_auto_del(BlockBackend *blk); +void blockdev_auto_del(BlockBackend *blk); + DriveInfo *blk_legacy_dinfo(BlockBackend *blk); DriveInfo *blk_set_legacy_dinfo(BlockBackend *blk, DriveInfo *dinfo); BlockBackend *blk_by_legacy_dinfo(DriveInfo *dinfo); @@ -50,10 +57,13 @@ DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit); void drive_check_orphaned(void); DriveInfo *drive_get_by_index(BlockInterfaceType type, int index); int drive_get_max_bus(BlockInterfaceType type); -int drive_get_max_devs(BlockInterfaceType type); DriveInfo *drive_get_next(BlockInterfaceType type); DriveInfo *drive_new(QemuOpts *arg, BlockInterfaceType block_default_type, Error **errp); +/* Common functions that are neither I/O nor Global State */ + +int drive_get_max_devs(BlockInterfaceType type); + #endif