From patchwork Thu Dec 5 03:45:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pan Nengyuan X-Patchwork-Id: 11274151 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F41D714BD for ; Thu, 5 Dec 2019 03:51:37 +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 C730B20707 for ; Thu, 5 Dec 2019 03:51:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C730B20707 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:49634 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iciAz-0003Pn-0F for patchwork-qemu-devel@patchwork.kernel.org; Wed, 04 Dec 2019 22:51:37 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45832) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ici5n-0006Qz-ME for qemu-devel@nongnu.org; Wed, 04 Dec 2019 22:46:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ici5m-0003zg-DP for qemu-devel@nongnu.org; Wed, 04 Dec 2019 22:46:15 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:2214 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ici5e-0003iG-8A; Wed, 04 Dec 2019 22:46:06 -0500 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 66AAEE0F3FCDB6FA77B1; Thu, 5 Dec 2019 11:45:56 +0800 (CST) Received: from HGHY2P002143101.china.huawei.com (10.184.39.213) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.439.0; Thu, 5 Dec 2019 11:45:48 +0800 From: To: , , Subject: [PATCH v5 1/2] block/nbd: extract the common cleanup code Date: Thu, 5 Dec 2019 11:45:27 +0800 Message-ID: <1575517528-44312-2-git-send-email-pannengyuan@huawei.com> X-Mailer: git-send-email 2.7.2.windows.1 In-Reply-To: <1575517528-44312-1-git-send-email-pannengyuan@huawei.com> References: <1575517528-44312-1-git-send-email-pannengyuan@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.184.39.213] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 45.249.212.190 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: liyiting@huawei.com, zhang.zhanghailiang@huawei.com, qemu-block@nongnu.org, Pan Nengyuan , qemu-devel@nongnu.org, kuhn.chenqun@huawei.com, Stefano Garzarella Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Pan Nengyuan The BDRVNBDState cleanup code is common in two places, add nbd_clear_bdrvstate() function to do these cleanups. Signed-off-by: Stefano Garzarella Signed-off-by: Pan Nengyuan Reviewed-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Eric Blake --- v3: - new patch, split form 2/2 patch (suggested by Stefano Garzarella) Changes v4 to v3: - replace function name from nbd_free_bdrvstate_prop to nbd_clear_bdrvstate and set cleared fields to NULL (suggested by Eric Blake) - remove static function prototype. (suggested by Eric Blake) --- Changes v5 to v4: - correct the wrong email address --- block/nbd.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/block/nbd.c b/block/nbd.c index 1239761..8b4a65a 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -94,6 +94,19 @@ typedef struct BDRVNBDState { static int nbd_client_connect(BlockDriverState *bs, Error **errp); +void nbd_clear_bdrvstate(BDRVNBDState *s) +{ + object_unref(OBJECT(s->tlscreds)); + qapi_free_SocketAddress(s->saddr); + s->saddr = NULL; + g_free(s->export); + s->export = NULL; + g_free(s->tlscredsid); + s->tlscredsid = NULL; + g_free(s->x_dirty_bitmap); + s->x_dirty_bitmap = NULL; +} + static void nbd_channel_error(BDRVNBDState *s, int ret) { if (ret == -EIO) { @@ -1855,10 +1868,7 @@ static int nbd_process_options(BlockDriverState *bs, QDict *options, error: if (ret < 0) { - object_unref(OBJECT(s->tlscreds)); - qapi_free_SocketAddress(s->saddr); - g_free(s->export); - g_free(s->tlscredsid); + nbd_clear_bdrvstate(s); } qemu_opts_del(opts); return ret; @@ -1937,12 +1947,7 @@ static void nbd_close(BlockDriverState *bs) BDRVNBDState *s = bs->opaque; nbd_client_close(bs); - - object_unref(OBJECT(s->tlscreds)); - qapi_free_SocketAddress(s->saddr); - g_free(s->export); - g_free(s->tlscredsid); - g_free(s->x_dirty_bitmap); + nbd_clear_bdrvstate(s); } static int64_t nbd_getlength(BlockDriverState *bs)