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=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 5D0FBC433E1 for ; Tue, 28 Jul 2020 02:00:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3688720759 for ; Tue, 28 Jul 2020 02:00:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726298AbgG1CAM (ORCPT ); Mon, 27 Jul 2020 22:00:12 -0400 Received: from mail.cn.fujitsu.com ([183.91.158.132]:39234 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726283AbgG1CAM (ORCPT ); Mon, 27 Jul 2020 22:00:12 -0400 X-IronPort-AV: E=Sophos;i="5.75,404,1589212800"; d="scan'208";a="96964965" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 28 Jul 2020 10:00:09 +0800 Received: from G08CNEXMBPEKD05.g08.fujitsu.local (unknown [10.167.33.204]) by cn.fujitsu.com (Postfix) with ESMTP id 261524CE5076; Tue, 28 Jul 2020 10:00:09 +0800 (CST) Received: from G08CNEXMBPEKD04.g08.fujitsu.local (10.167.33.201) by G08CNEXMBPEKD05.g08.fujitsu.local (10.167.33.204) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 28 Jul 2020 10:00:08 +0800 Received: from G08CNEXMBPEKD04.g08.fujitsu.local ([fe80::5ce6:5645:817a:34a4]) by G08CNEXMBPEKD04.g08.fujitsu.local ([fe80::5ce6:5645:817a:34a4%14]) with mapi id 15.00.1497.006; Tue, 28 Jul 2020 10:00:08 +0800 From: "Li, Hao" To: "linux-xfs@vger.kernel.org" , "linux-nvdimm@lists.01.org" CC: "ira.weiny@intel.com" , "Gotou, Yasunori" Subject: Can we change the S_DAX flag immediately on XFS without dropping caches? Thread-Topic: Can we change the S_DAX flag immediately on XFS without dropping caches? Thread-Index: AdZkgkZYa39eKDGBSXGgU6Kg+bZxog== Date: Tue, 28 Jul 2020 02:00:08 +0000 Message-ID: <9dc179147f6a47279d801445f3efeecc@G08CNEXMBPEKD04.g08.fujitsu.local> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.167.225.206] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-yoursite-MailScanner-ID: 261524CE5076.A95B8 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: lihao2018.fnst@cn.fujitsu.com Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org SGksDQoNCkkgaGF2ZSBub3RpY2VkIHRoYXQgd2UgaGF2ZSB0byBkcm9wIGNh Y2hlcyB0byBtYWtlIHRoZSBjaGFuZ2luZyBvZiBTX0RBWA0KZmxhZyB0YWtl IGVmZmVjdCBhZnRlciB1c2luZyBjaGF0dHIgK3ggdG8gdHVybiBvbiBEQVgg Zm9yIGEgZXhpc3RpbmcNCnJlZ3VsYXIgZmlsZS4gVGhlIHJlbGF0ZWQgZnVu Y3Rpb24gaXMgeGZzX2RpZmxhZ3NfdG9faWZsYWdzLCB3aG9zZQ0Kc2Vjb25k IHBhcmFtZXRlciBkZXRlcm1pbmVzIHdoZXRoZXIgd2Ugc2hvdWxkIHNldCBT X0RBWCBpbW1lZGlhdGVseS4NCg0KSSBjYW4ndCBmaWd1cmUgb3V0IHdoeSB3 ZSBkbyB0aGlzLiBJcyB0aGlzIGJlY2F1c2UgdGhlIHBhZ2UgY2FjaGVzIGlu DQphZGRyZXNzX3NwYWNlLT5pX3BhZ2VzIGFyZSBoYXJkIHRvIGRlYWwgd2l0 aD8gSSBhbHNvIHdvbmRlciB3aGF0IHdpbGwNCmhhcHBlbiBpZiB3ZSBzZXQg U19EQVggdW5jb25kaXRpb25hbGx5LiBUaGFua3MhDQoNClJlZ2FyZHMsDQpI YW8gTGkNCgoK