Received: by 10.223.176.5 with SMTP id f5csp336875wra; Thu, 8 Feb 2018 23:12:25 -0800 (PST) X-Google-Smtp-Source: AH8x226BlfiapK19+gKCggafAnzJEZ5YkeCYZ9IEtCtB43wFI28IX7nRpP9P7B9hhwhMSFPy/y/N X-Received: by 2002:a17:902:2845:: with SMTP id e63-v6mr1619834plb.438.1518160345826; Thu, 08 Feb 2018 23:12:25 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518160345; cv=none; d=google.com; s=arc-20160816; b=lxyqMn3/LO2JimG5rgw5YhsENTNCYKmG7UM5LpZU/fUCE7AsBV09c1XZmP1YX2xwno hGbYXNv9MbhnlTB+l+Iwa3KMTMnuzuwlWb0lwBw9InxwdnwrVyL9HAD5xP04JynEdM2L sJq7Zo25k934ixZVtVyrUkAlLhznPug9tRNxwrXDo9Hp7cJAR0qv+oJSzRv1PsDZ4kzV SqCFU1nlUL+uBJ3fnFfom8VHAVj9Q5RXKl7jQ1HmEX7XSS2w5gmHs9E1EO7oG1M8OmoJ LATiEmViFk4vkTZhVcPNoDUe3yT5n+wlvJVo36bzkejxw3ZwaCoqRdECOU78/CLmgowy KP0g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :user-agent:date:message-id:cc:to:subject:from :arc-authentication-results; bh=34+hbuDZzAzKclJHYXgcmEAP3MsAHFjyf8NeWjh04pU=; b=UgUFENyKJqNZDoCyGeDYYe7Gyz2+L8egMnE+a2EGLPW2a7JYP9JOzmd5rhWt2B62NM piEr9iz07P2vRPgzIkDzYNIi4Wi4d5u6y0dNaxyeeZUUT3DZlj+8SA4qmvP4hgATs1LO a5CqOJUQ7zy0U3iCSsqJ4Pk8NiA1O53992VEjev8WPTOMtK7rFNGtZHeom41C/7e6K+f Qr9IsPNEFey0EG/oOObRCf/EagH9omPyae4yZDyJLPan16GnouKD4sdA20FL7BRxKDsU jYt2/Q8aB1/F+9UwicFKlQO+yxpnXG80r9LjndWDqi+rJebM5CyUIqiO+AcPfbvuzAw5 tEgQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id v67si1283585pfj.77.2018.02.08.23.12.11; Thu, 08 Feb 2018 23:12:25 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751037AbeBIHLf (ORCPT + 99 others); Fri, 9 Feb 2018 02:11:35 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:45585 "EHLO huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750828AbeBIHLd (ORCPT ); Fri, 9 Feb 2018 02:11:33 -0500 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 3BB75183EB0C7; Fri, 9 Feb 2018 15:11:20 +0800 (CST) Received: from [127.0.0.1] (10.177.16.168) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.361.1; Fri, 9 Feb 2018 15:11:14 +0800 From: jiangyiwen Subject: [V9fs-developer] [RFC] we should solve create-unlink-getattr idiom To: Eric Van Hensbergen , Greg Kurz , , CC: , Ron Minnich , Latchesar Ionkov , , , Veaceslav Falico Message-ID: <5A7D4976.6060407@huawei.com> Date: Fri, 9 Feb 2018 15:10:46 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.177.16.168] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Eric and Greg, I encountered the similar problem with create-unlink-getattr idiom. I use the testcase that create-unlink-setattr idiom, and I see the bug is reported at https://bugs.launchpad.net/qemu/+bug/1336794. Then I also see you already fix the issue and push the patch to upstream. https://github.com/ericvh/linux/commit/eaf70223eac094291169f5a6de580351890162a2 http://patchwork.ozlabs.org/patch/626194/ Unfortunately, the two patches are not merged into master, I don't know the reason, so I suggest if the patche can be merged into master, and it will solve the create-unlink-getattr idiom. Thanks, Yiwen