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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 0A2C6C43334 for ; Fri, 24 Jun 2022 15:43:31 +0000 (UTC) Received: from localhost ([::1]:43332 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4lT0-0002kL-3V for qemu-devel@archiver.kernel.org; Fri, 24 Jun 2022 11:43:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41314) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4lR6-0006J7-2i for qemu-devel@nongnu.org; Fri, 24 Jun 2022 11:41:32 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:47064) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4lR1-0000rD-Gl for qemu-devel@nongnu.org; Fri, 24 Jun 2022 11:41:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1656085287; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=J/xkwsXp5pBDorvsuPFgfjpFzMQWzB6ZHuuuHlZ9KSw=; b=Zd5zzyW6eMXKCZyZl3LLL092sACKVRzuZiGMAdAca57Jzz0JtRqLjsZqU0biytdRrWruIx gg1hRxhDUQlOZQC3iYbuXGnITrU0/jjYss81Ibq3kgpw2Z4ogvPm8BzFQacJLuaZlcxB3b LSMaP1Kq6aItSRFhuk7CRIUeLc4+Xxc= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-513-kM9HM1kNMz-4p2r4AfxVxA-1; Fri, 24 Jun 2022 11:41:25 -0400 X-MC-Unique: kM9HM1kNMz-4p2r4AfxVxA-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 38EFC3C10163; Fri, 24 Jun 2022 15:41:25 +0000 (UTC) Received: from merkur.fritz.box (unknown [10.39.194.34]) by smtp.corp.redhat.com (Postfix) with ESMTP id 99058492CA5; Fri, 24 Jun 2022 15:41:24 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, qemu-devel@nongnu.org Subject: [PULL v2 12/20] vduse-blk: Add vduse-blk resize support Date: Fri, 24 Jun 2022 17:40:55 +0200 Message-Id: <20220624154103.185902-13-kwolf@redhat.com> In-Reply-To: <20220624154103.185902-1-kwolf@redhat.com> References: <20220624154103.185902-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Xie Yongji To support block resize, this uses vduse_dev_update_config() to update the capacity field in configuration space and inject config interrupt on the block resize callback. Signed-off-by: Xie Yongji Reviewed-by: Stefan Hajnoczi Message-Id: <20220523084611.91-8-xieyongji@bytedance.com> Signed-off-by: Kevin Wolf --- block/export/vduse-blk.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/block/export/vduse-blk.c b/block/export/vduse-blk.c index 04be16c133..cab1904234 100644 --- a/block/export/vduse-blk.c +++ b/block/export/vduse-blk.c @@ -204,6 +204,23 @@ static void blk_aio_detach(void *opaque) vblk_exp->export.ctx = NULL; } +static void vduse_blk_resize(void *opaque) +{ + BlockExport *exp = opaque; + VduseBlkExport *vblk_exp = container_of(exp, VduseBlkExport, export); + struct virtio_blk_config config; + + config.capacity = + cpu_to_le64(blk_getlength(exp->blk) >> VIRTIO_BLK_SECTOR_BITS); + vduse_dev_update_config(vblk_exp->dev, sizeof(config.capacity), + offsetof(struct virtio_blk_config, capacity), + (char *)&config.capacity); +} + +static const BlockDevOps vduse_block_ops = { + .resize_cb = vduse_blk_resize, +}; + static int vduse_blk_exp_create(BlockExport *exp, BlockExportOptions *opts, Error **errp) { @@ -299,6 +316,8 @@ static int vduse_blk_exp_create(BlockExport *exp, BlockExportOptions *opts, blk_add_aio_context_notifier(exp->blk, blk_aio_attached, blk_aio_detach, vblk_exp); + blk_set_dev_ops(exp->blk, &vduse_block_ops, exp); + return 0; } @@ -308,6 +327,7 @@ static void vduse_blk_exp_delete(BlockExport *exp) blk_remove_aio_context_notifier(exp->blk, blk_aio_attached, blk_aio_detach, vblk_exp); + blk_set_dev_ops(exp->blk, NULL, NULL); vduse_dev_destroy(vblk_exp->dev); } -- 2.35.3