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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT 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 B5891C4321D for ; Thu, 16 Aug 2018 08:19:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 770B5208C2 for ; Thu, 16 Aug 2018 08:19:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 770B5208C2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389905AbeHPLQH (ORCPT ); Thu, 16 Aug 2018 07:16:07 -0400 Received: from mga05.intel.com ([192.55.52.43]:27823 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726199AbeHPLQG (ORCPT ); Thu, 16 Aug 2018 07:16:06 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Aug 2018 01:19:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,246,1531810800"; d="scan'208";a="83781743" Received: from devel-ww.sh.intel.com ([10.239.48.110]) by orsmga002.jf.intel.com with ESMTP; 16 Aug 2018 01:19:15 -0700 From: Wei Wang To: virtio-dev@lists.oasis-open.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-mm@kvack.org, mst@redhat.com, mhocko@kernel.org, akpm@linux-foundation.org, penguin-kernel@I-love.SAKURA.ne.jp Cc: wei.w.wang@intel.com Subject: [PATCH v4 2/3] virtio-balloon: kzalloc the vb struct Date: Thu, 16 Aug 2018 15:50:57 +0800 Message-Id: <1534405858-27085-3-git-send-email-wei.w.wang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1534405858-27085-1-git-send-email-wei.w.wang@intel.com> References: <1534405858-27085-1-git-send-email-wei.w.wang@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Zero all the vb fields at alloaction, so that we don't need to zero-initialize each field one by one later. Signed-off-by: Wei Wang Cc: Michael S. Tsirkin Cc: Tetsuo Handa --- drivers/virtio/virtio_balloon.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 8100e77..d97d73c 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -561,7 +561,7 @@ static int virtballoon_probe(struct virtio_device *vdev) return -EINVAL; } - vdev->priv = vb = kmalloc(sizeof(*vb), GFP_KERNEL); + vdev->priv = vb = kzalloc(sizeof(*vb), GFP_KERNEL); if (!vb) { err = -ENOMEM; goto out; @@ -570,8 +570,6 @@ static int virtballoon_probe(struct virtio_device *vdev) INIT_WORK(&vb->update_balloon_stats_work, update_balloon_stats_func); INIT_WORK(&vb->update_balloon_size_work, update_balloon_size_func); spin_lock_init(&vb->stop_update_lock); - vb->stop_update = false; - vb->num_pages = 0; mutex_init(&vb->balloon_lock); init_waitqueue_head(&vb->acked); vb->vdev = vdev; @@ -602,7 +600,6 @@ static int virtballoon_probe(struct virtio_device *vdev) err = PTR_ERR(vb->vb_dev_info.inode); kern_unmount(balloon_mnt); unregister_oom_notifier(&vb->nb); - vb->vb_dev_info.inode = NULL; goto out_del_vqs; } vb->vb_dev_info.inode->i_mapping->a_ops = &balloon_aops; -- 2.7.4