From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from esa1.hgst.iphmx.com ([68.232.141.245]:12268 "EHLO esa1.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752364AbdJDPZP (ORCPT ); Wed, 4 Oct 2017 11:25:15 -0400 From: Bart Van Assche To: "boris.ostrovsky@oracle.com" , "ONeukum@suse.com" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "nborisov@suse.com" , "oleg.b.antonyan@gmail.com" , "linux-pm@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "pavel@ucw.cz" , "darrick.wong@oracle.com" , "viro@zeniv.linux.org.uk" , "ming.lei@redhat.com" , "rjw@rjwysocki.net" , "jgross@suse.com" , "oleksandr@natalenko.name" , "todd.e.brandt@linux.intel.com" , "martin.petersen@oracle.com" , "mcgrof@kernel.org" , "linux-fsdevel@vger.kernel.org" , "jikos@kernel.org" , "len.brown@intel.com" , "tytso@mit.edu" , "david@fromorbit.com" , "jack@suse.cz" Subject: Re: [RFC 4/5] ext4: add fs freezing support on suspend/hibernation Date: Wed, 4 Oct 2017 15:25:07 +0000 Message-ID: <1507130705.3583.14.camel@wdc.com> References: <20171003185313.1017-1-mcgrof@kernel.org> <20171003185313.1017-5-mcgrof@kernel.org> <20171003195930.ivgaccdabxczar62@thunk.org> <20171003201321.GE2294@wotan.suse.de> <20171004014204.mztkdnm7wb7r6sl2@thunk.org> <20171004070523.GE3666@dastard> In-Reply-To: <20171004070523.GE3666@dastard> Content-Type: text/plain; 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Wed, 4 Oct 2017 11:25:19 -0400 Received: from esa1.hgst.iphmx.com ([68.232.141.245]:12268 "EHLO esa1.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752364AbdJDPZP (ORCPT ); Wed, 4 Oct 2017 11:25:15 -0400 X-IronPort-AV: E=Sophos;i="5.42,477,1500912000"; d="scan'208";a="158709834" From: Bart Van Assche To: "boris.ostrovsky@oracle.com" , "ONeukum@suse.com" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "nborisov@suse.com" , "oleg.b.antonyan@gmail.com" , "linux-pm@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "pavel@ucw.cz" , "darrick.wong@oracle.com" , "viro@zeniv.linux.org.uk" , "ming.lei@redhat.com" , "rjw@rjwysocki.net" , "jgross@suse.com" , "oleksandr@natalenko.name" , "todd.e.brandt@linux.intel.com" , "martin.petersen@oracle.com" , "mcgrof@kernel.org" , "linux-fsdevel@vger.kernel.org" , "jikos@kernel.org" , "len.brown@intel.com" , "tytso@mit.edu" , "david@fromorbit.com" , "jack@suse.cz" Subject: Re: [RFC 4/5] ext4: add fs freezing support on suspend/hibernation Thread-Topic: [RFC 4/5] ext4: add fs freezing support on suspend/hibernation Thread-Index: AQHTPHjma3OH1+9jaEiQmgxfYqMCSKLSi00AgAAD34CAAFvXAIAAWlaAgACLnYA= Date: Wed, 4 Oct 2017 15:25:07 +0000 Message-ID: <1507130705.3583.14.camel@wdc.com> References: <20171003185313.1017-1-mcgrof@kernel.org> <20171003185313.1017-5-mcgrof@kernel.org> <20171003195930.ivgaccdabxczar62@thunk.org> <20171003201321.GE2294@wotan.suse.de> <20171004014204.mztkdnm7wb7r6sl2@thunk.org> <20171004070523.GE3666@dastard> In-Reply-To: <20171004070523.GE3666@dastard> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Bart.VanAssche@wdc.com; x-originating-ip: [63.163.107.201] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;CY1PR0401MB1536;20:NERMnYZ9BpZFOqJgfd9nWfoDNQqlqbj4lfmLHOcCOE+sYN1RjmVMnSxF1q/3FzMSKlOCDmzPjv++QXEog1HiJp9+RjIKc1cpKwPHoft+XQ45mc+WwL6ShEYmrby1qPGT8lu37JWI4JHWaUb0fYnI+uAG4o1ssvkWjDd9C0UNSOM= x-ms-office365-filtering-correlation-id: 8064f5e5-2194-429c-89a0-08d50b3c1805 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001)(2017030254152)(48565401081)(2017052603199)(201703131423075)(201703031133081)(201702281549075);SRVR:CY1PR0401MB1536; x-ms-traffictypediagnostic: CY1PR0401MB1536: wdcipoutbound: EOP-TRUE x-exchange-antispam-report-test: UriScan:; x-microsoft-antispam-prvs: x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(100000700101)(100105000095)(100000701101)(100105300095)(100000702101)(100105100095)(6040450)(2401047)(5005006)(8121501046)(10201501046)(100000703101)(100105400095)(3002001)(93006095)(93001095)(6055026)(6041248)(201703131423075)(201702281528075)(201703061421075)(201703061406153)(20161123564025)(20161123555025)(20161123558100)(20161123560025)(20161123562025)(6072148)(201708071742011)(100000704101)(100105200095)(100000705101)(100105500095);SRVR:CY1PR0401MB1536;BCL:0;PCL:0;RULEID:(100000800101)(100110000095)(100000801101)(100110300095)(100000802101)(100110100095)(100000803101)(100110400095)(100000804101)(100110200095)(100000805101)(100110500095);SRVR:CY1PR0401MB1536; x-forefront-prvs: 0450A714CB x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(6009001)(376002)(346002)(377424004)(199003)(24454002)(189002)(6486002)(68736007)(54356999)(3660700001)(3280700002)(50986999)(101416001)(99286003)(6512007)(102836003)(6436002)(33646002)(105586002)(8936002)(3846002)(106356001)(6116002)(66066001)(76176999)(39060400002)(2501003)(25786009)(53936002)(6246003)(14454004)(2171002)(110136005)(7736002)(316002)(103116003)(305945005)(77096006)(7416002)(2906002)(2201001)(86362001)(93886005)(36756003)(2900100001)(229853002)(2950100002)(8676002)(81166006)(6506006)(189998001)(81156014)(478600001)(5660300001)(72206003)(97736004)(921003)(1121003);DIR:OUT;SFP:1102;SCL:1;SRVR:CY1PR0401MB1536;H:CY1PR0401MB1536.namprd04.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" Content-ID: MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Oct 2017 15:25:07.0190 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR0401MB1536 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by nfs id v94FPOB0000880 On Wed, 2017-10-04 at 18:05 +1100, Dave Chinner wrote: > Basically, before thawing filesystems the rest of the kernel > infrastructure needs to have been restarted. i.e. the order > needs to be: > > freeze userspace > freeze filesystems > freeze kernel threads > freeze workqueues > > thaw workqueues > thaw kernel threads > thaw filesystems > thaw userspace > > and it should end up that way. Does this order support filesystems that have been implemented in user space, e.g. filesystems based on FUSE? Thanks, Bart. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: Re: [RFC 4/5] ext4: add fs freezing support on suspend/hibernation Date: Wed, 4 Oct 2017 15:25:07 +0000 Message-ID: <1507130705.3583.14.camel@wdc.com> References: <20171003185313.1017-1-mcgrof@kernel.org> <20171003185313.1017-5-mcgrof@kernel.org> <20171003195930.ivgaccdabxczar62@thunk.org> <20171003201321.GE2294@wotan.suse.de> <20171004014204.mztkdnm7wb7r6sl2@thunk.org> <20171004070523.GE3666@dastard> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20171004070523.GE3666@dastard> Content-Language: en-US Content-ID: Sender: linux-kernel-owner@vger.kernel.org To: "boris.ostrovsky@oracle.com" , "ONeukum@suse.com" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "nborisov@suse.com" , "oleg.b.antonyan@gmail.com" , "linux-pm@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "pavel@ucw.cz" , "darrick.wong@oracle.com" , "viro@zeniv.linux.org.uk" , "ming.lei@redhat.com" , "rjw@rjwysocki.net" , "jgross@suse.com" , "oleksandr@natalenko.name" , todd.e.brandt@linux.intel.co List-Id: linux-pm@vger.kernel.org T24gV2VkLCAyMDE3LTEwLTA0IGF0IDE4OjA1ICsxMTAwLCBEYXZlIENoaW5uZXIgd3JvdGU6DQo+ IEJhc2ljYWxseSwgYmVmb3JlIHRoYXdpbmcgZmlsZXN5c3RlbXMgdGhlIHJlc3Qgb2YgdGhlIGtl cm5lbA0KPiBpbmZyYXN0cnVjdHVyZSBuZWVkcyB0byBoYXZlIGJlZW4gcmVzdGFydGVkLiBpLmUu IHRoZSBvcmRlcg0KPiBuZWVkcyB0byBiZToNCj4gDQo+IGZyZWV6ZSB1c2Vyc3BhY2UNCj4gZnJl ZXplIGZpbGVzeXN0ZW1zDQo+IGZyZWV6ZSBrZXJuZWwgdGhyZWFkcw0KPiBmcmVlemUgd29ya3F1 ZXVlcw0KPiANCj4gdGhhdyB3b3JrcXVldWVzDQo+IHRoYXcga2VybmVsIHRocmVhZHMNCj4gdGhh dyBmaWxlc3lzdGVtcw0KPiB0aGF3IHVzZXJzcGFjZQ0KPiANCj4gYW5kIGl0IHNob3VsZCBlbmQg dXAgdGhhdCB3YXkuDQoNCkRvZXMgdGhpcyBvcmRlciBzdXBwb3J0IGZpbGVzeXN0ZW1zIHRoYXQg aGF2ZSBiZWVuIGltcGxlbWVudGVkIGluIHVzZXIgc3BhY2UsDQplLmcuIGZpbGVzeXN0ZW1zIGJh c2VkIG9uIEZVU0U/DQoNClRoYW5rcywNCg0KQmFydC4=