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=-13.9 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 D38CAC433DF for ; Tue, 18 Aug 2020 15:35:00 +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 942DD20786 for ; Tue, 18 Aug 2020 15:35:00 +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="UcNnHGtw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 942DD20786 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]:54228 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k83db-0006V8-Or for qemu-devel@archiver.kernel.org; Tue, 18 Aug 2020 11:34:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45238) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k835z-0002sz-46 for qemu-devel@nongnu.org; Tue, 18 Aug 2020 11:00:15 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:43882 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 1k835v-0005OK-7O for qemu-devel@nongnu.org; Tue, 18 Aug 2020 11:00:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597762809; 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: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=l2Bc+l4F7DXJeUeALKfLL+jqNnv6Ip7cUvzBDx5+Mlo=; b=UcNnHGtwfHhJyIkpNrY30syf8iNij7CrrFgvbd4vcZzjMfB0cq0Qj0a/WAbt2uODjzoK0v n36r0mxaEVi67UjR86IUFhXRqZiaQ1Ln6XOJjEuWjchWAi7s33Uw77142CH4Q6+YN11a2i A6Fiz/HiSeUnu0awHiOqbdi+98+XdGU= 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-247-xQVHpjceNECXVPDKZ7cKGw-1; Tue, 18 Aug 2020 11:00:07 -0400 X-MC-Unique: xQVHpjceNECXVPDKZ7cKGw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5712E807335; Tue, 18 Aug 2020 15:00:06 +0000 (UTC) Received: from dresden.str.redhat.com (ovpn-112-119.ams2.redhat.com [10.36.112.119]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4039026323; Tue, 18 Aug 2020 15:00:02 +0000 (UTC) Subject: Re: [RFC PATCH 17/22] block/export: Add blk_exp_close_all(_type) To: Kevin Wolf , qemu-block@nongnu.org References: <20200813162935.210070-1-kwolf@redhat.com> <20200813162935.210070-18-kwolf@redhat.com> From: Max Reitz Autocrypt: addr=mreitz@redhat.com; prefer-encrypt=mutual; keydata= mQENBFXOJlcBCADEyyhOTsoa/2ujoTRAJj4MKA21dkxxELVj3cuILpLTmtachWj7QW+TVG8U /PsMCFbpwsQR7oEy8eHHZwuGQsNpEtNC2G/L8Yka0BIBzv7dEgrPzIu+W3anZXQW4702+uES U29G8TP/NGfXRRHGlbBIH9KNUnOSUD2vRtpOLXkWsV5CN6vQFYgQfFvmp5ZpPeUe6xNplu8V mcTw8OSEDW/ZnxJc8TekCKZSpdzYoxfzjm7xGmZqB18VFwgJZlIibt1HE0EB4w5GsD7x5ekh awIe3RwoZgZDLQMdOitJ1tUc8aqaxvgA4tz6J6st8D8pS//m1gAoYJWGwwIVj1DjTYLtABEB AAG0HU1heCBSZWl0eiA8bXJlaXR6QHJlZGhhdC5jb20+iQFTBBMBCAA9AhsDBQkSzAMABQsJ CAcCBhUICQoLAgQWAgMBAh4BAheABQJVzie5FRhoa3A6Ly9rZXlzLmdudXBnLm5ldAAKCRD0 B9sAYdXPQDcIB/9uNkbYEex1rHKz3mr12uxYMwLOOFY9fstP5aoVJQ1nWQVB6m2cfKGdcRe1 2/nFaHSNAzT0NnKz2MjhZVmcrpyd2Gp2QyISCfb1FbT82GMtXFj1wiHmPb3CixYmWGQUUh+I AvUqsevLA+WihgBUyaJq/vuDVM1/K9Un+w+Tz5vpeMidlIsTYhcsMhn0L9wlCjoucljvbDy/ 8C9L2DUdgi3XTa0ORKeflUhdL4gucWoAMrKX2nmPjBMKLgU7WLBc8AtV+84b9OWFML6NEyo4 4cP7cM/07VlJK53pqNg5cHtnWwjHcbpGkQvx6RUx6F1My3y52vM24rNUA3+ligVEgPYBuQEN BFXOJlcBCADAmcVUNTWT6yLWQHvxZ0o47KCP8OcLqD+67T0RCe6d0LP8GsWtrJdeDIQk+T+F xO7DolQPS6iQ6Ak2/lJaPX8L0BkEAiMuLCKFU6Bn3lFOkrQeKp3u05wCSV1iKnhg0UPji9V2 W5eNfy8F4ZQHpeGUGy+liGXlxqkeRVhLyevUqfU0WgNqAJpfhHSGpBgihUupmyUg7lfUPeRM DzAN1pIqoFuxnN+BRHdAecpsLcbR8sQddXmDg9BpSKozO/JyBmaS1RlquI8HERQoe6EynJhd 64aICHDfj61rp+/0jTIcevxIIAzW70IadoS/y3DVIkuhncgDBvGbF3aBtjrJVP+5ABEBAAGJ ASUEGAEIAA8FAlXOJlcCGwwFCRLMAwAACgkQ9AfbAGHVz0CbFwf9F/PXxQR9i4N0iipISYjU sxVdjJOM2TMut+ZZcQ6NSMvhZ0ogQxJ+iEQ5OjnIputKvPVd5U7WRh+4lF1lB/NQGrGZQ1ic alkj6ocscQyFwfib+xIe9w8TG1CVGkII7+TbS5pXHRxZH1niaRpoi/hYtgzkuOPp35jJyqT/ /ELbqQTDAWcqtJhzxKLE/ugcOMK520dJDeb6x2xVES+S5LXby0D4juZlvUj+1fwZu+7Io5+B bkhSVPb/QdOVTpnz7zWNyNw+OONo1aBUKkhq2UIByYXgORPFnbfMY7QWHcjpBVw9MgC4tGeF R4bv+1nAMMxKmb5VvQCExr0eFhJUAHAhVg== Message-ID: <706438d2-2c7d-4f5f-0149-d5e881205bf0@redhat.com> Date: Tue, 18 Aug 2020 17:00:00 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200813162935.210070-18-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mreitz@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="OTJ3Ll3D4SRd5YQr4aW5e54Ip9bVlx2zZ" Received-SPF: pass client-ip=207.211.31.120; envelope-from=mreitz@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/18 06:40:33 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, 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_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --OTJ3Ll3D4SRd5YQr4aW5e54Ip9bVlx2zZ Content-Type: multipart/mixed; boundary="tJInkF5xKkWZTHt7h1BLrU1vqyNngVJCa" --tJInkF5xKkWZTHt7h1BLrU1vqyNngVJCa Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 13.08.20 18:29, Kevin Wolf wrote: > This adds a function to shut down all block exports, and another one to > shut down the block exports of a single type. The latter is used for now > when stopping the NBD server. As soon as we implement support for > multiple NBD servers, we'll need a per-server list of exports and it > will be replaced by a function using that. >=20 > As a side effect, the BlockExport layer has a list tracking all existing > exports now. closed_exports loses its only user and can go away. >=20 > Signed-off-by: Kevin Wolf > --- > include/block/export.h | 8 +++++++ > include/block/nbd.h | 2 -- > block.c | 2 +- > block/export/export.c | 52 ++++++++++++++++++++++++++++++++++++++++++ > blockdev-nbd.c | 2 +- > nbd/server.c | 34 ++++----------------------- > qemu-nbd.c | 2 +- > 7 files changed, 68 insertions(+), 34 deletions(-) Reviewed-by: Max Reitz > diff --git a/block/export/export.c b/block/export/export.c > index 9de108cbc1..675db9a8b9 100644 > --- a/block/export/export.c > +++ b/block/export/export.c [...] > +/* type =3D=3D BLOCK_EXPORT_TYPE__MAX for all types */ > +void blk_exp_close_all_type(BlockExportType type) > +{ > + BlockExport *exp, *next; > + > + QLIST_FOREACH_SAFE(exp, &block_exports, next, next) { > + if (type !=3D BLOCK_EXPORT_TYPE__MAX && exp->drv->type !=3D type= ) { > + continue; > + } > + blk_exp_request_shutdown(exp); > + } > + > + AIO_WAIT_WHILE(NULL, blk_exp_has_type(type)); > +} > + > +void blk_exp_close_all(void) > +{ > + blk_exp_close_all_type(BLOCK_EXPORT_TYPE__MAX); What=E2=80=99s interesting about this is that I saw from the header file th= at you added both this and the type-specific function and wondered =E2=80=9CWh= y not just pass __MAX to close_all_type() to close all?=E2=80=9D And then I thou= ght =E2=80=9CBecause that would be stupid as an external interface=E2=80=9D. So I see you had the same thinking. --tJInkF5xKkWZTHt7h1BLrU1vqyNngVJCa-- --OTJ3Ll3D4SRd5YQr4aW5e54Ip9bVlx2zZ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl877PAACgkQ9AfbAGHV z0CxIQgAnHqFtvZXg3CrZ5d1uORmza+mcWnijvNPEuqFUU+zMCJ75atC9phC92f8 jP/wzIKjjn/qx4DI9yhM0a5kwI8Igevoqngf3gzQIH7vPNU3tW6ZJvsMHc8qXGu+ Z9hrChnIVnkF4H22wxiIKqvYfj1QGfEyThtLgsNDULJopTohGIrZFLKnMtiuZIBn PJHjz3YezrTej50YvD4bF/2pXrAJDUyISgJLUiBe5WE4WKZ+wjjBhIWyYtPpgq2b wLR6CC+/pb++AgyzwzlpcyGFUr1fEl1EawUx7KuSYX7TpqtD04VhCuqncrUF3Pd0 YnXYRy0CowmJRNBr4reHXPq1ix4qrQ== =lDdS -----END PGP SIGNATURE----- --OTJ3Ll3D4SRd5YQr4aW5e54Ip9bVlx2zZ--