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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6B2DC43334 for ; Tue, 28 Jun 2022 13:41:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346697AbiF1NlA (ORCPT ); Tue, 28 Jun 2022 09:41:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346688AbiF1Nk4 (ORCPT ); Tue, 28 Jun 2022 09:40:56 -0400 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C603827CFE for ; Tue, 28 Jun 2022 06:40:53 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-50-YWi63-uoNrW8kmPB3ciyCQ-1; Tue, 28 Jun 2022 14:40:35 +0100 X-MC-Unique: YWi63-uoNrW8kmPB3ciyCQ-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.36; Tue, 28 Jun 2022 14:38:07 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.036; Tue, 28 Jun 2022 14:38:07 +0100 From: David Laight To: 'Christian Brauner' , Ralph Corderoy CC: Matthew Wilcox , Nate Karstens , Alexander Viro , "Jeff Layton" , "J. Bruce Fields" , "Arnd Bergmann" , Richard Henderson , "Ivan Kokshaysky" , Matt Turner , "James E.J. Bottomley" , Helge Deller , "David S. Miller" , Jakub Kicinski , Eric Dumazet , "linux-fsdevel@vger.kernel.org" , "linux-arch@vger.kernel.org" , "linux-alpha@vger.kernel.org" , "linux-parisc@vger.kernel.org" , "sparclinux@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Changli Gao Subject: RE: [PATCH v2] Implement close-on-fork Thread-Topic: [PATCH v2] Implement close-on-fork Thread-Index: AQHYivDThpuxuu360k2l3JKLwphwnK1k0dbQ Date: Tue, 28 Jun 2022 13:38:07 +0000 Message-ID: <35d0facc934748f995c2e7ab695301f7@AcuMS.aculab.com> References: <20200515152321.9280-1-nate.karstens@garmin.com> <20220618114111.61EC71F981@orac.inputplus.co.uk> <20220619104228.A9789201F7@orac.inputplus.co.uk> <20220628131304.gbiqqxamg6pmvsxf@wittgenstein> In-Reply-To: <20220628131304.gbiqqxamg6pmvsxf@wittgenstein> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogQ2hyaXN0aWFuIEJyYXVuZXINCj4gU2VudDogMjggSnVuZSAyMDIyIDE0OjEzDQo+IA0K PiBPbiBTdW4sIEp1biAxOSwgMjAyMiBhdCAxMTo0MjoyOEFNICswMTAwLCBSYWxwaCBDb3JkZXJv eSB3cm90ZToNCj4gPiBIaSBNYXR0aGV3LCB0aGFua3MgZm9yIHJlcGx5aW5nLg0KPiA+DQo+ID4g PiA+IFRoZSBuZWVkIGZvciBPX0NMT0ZPUksgbWlnaHQgYmUgbWFkZSBtb3JlIGNsZWFyIGJ5IGxv b2tpbmcgYXQgYQ0KPiA+ID4gPiBsb25nLXN0YW5kaW5nIEdvIGlzc3VlLCBpLmUuIHVucmVsYXRl ZCB0byBzeXN0ZW0oMyksIHdoaWNoIHdhcyBzdGFydGVkDQo+ID4gPiA+IGluIDIwMTcgYnkgUnVz cyBDb3ggd2hlbiBoZSBzdW1tZWQgdXAgdGhlIGN1cnJlbnQgcmFjZS1jb25kaXRpb24NCj4gPiA+ ID4gYmVoYXZpb3VyIG9mIHRyeWluZyB0byBleGVjdmUoMikgYSBuZXdseSBjcmVhdGVkIGZpbGU6 DQo+ID4gPiA+IGh0dHBzOi8vZ2l0aHViLmNvbS9nb2xhbmcvZ28vaXNzdWVzLzIyMzE1Lg0KPiA+ ID4NCj4gPiA+IFRoZSBwcm9ibGVtIGlzIHRoYXQgcGVvcGxlIGFkdm9jYXRpbmcgZm9yIE9fQ0xP Rk9SSyB1bmRlcnN0YW5kIGl0cw0KPiA+ID4gdmFsdWUsIGJ1dCBub3QgaXRzIGNvc3QuICBPdGhl ciBnb29nbGUgZW1wbG95ZWVzIGhhdmUgYSBzeXN0ZW0gd2hpY2gNCj4gPiA+IGhhcyBsaXRlcmFs bHkgbWlsbGlvbnMgb2YgZmlsZSBkZXNjcmlwdG9ycyBpbiBhIHNpbmdsZSBwcm9jZXNzLg0KPiA+ ID4gSGF2aW5nIHRvIG1haW50YWluIHRoaXMgZXh0cmEgc3RhdGUgcGVyLWZkIGlzIGEgY29zdCB0 aGV5IGRvbid0IHdhbnQNCj4gPiA+IHRvIHBheSAoYW5kIGhhdmUgYmVlbiBxdWl0ZSB2b2NhbCBh Ym91dCBlYXJsaWVyIGluIHRoaXMgdGhyZWFkKS4NCj4gPg0KPiA+IFNvIGRvIHlvdSBhZ3JlZSB0 aGUgdXNlcnNwYWNlIGlzc3VlIGlzIGJlc3Qgc29sdmVkIGJ5ICpfQ0xPRk9SSyBhbmQgdGhlDQo+ ID4gcHJvYmxlbSBpcyBob3cgdG8gaW1wbGVtZW50ICpfQ0xPRk9SSyBhdCBhbiBhY2NlcHRhYmxl IGNvc3Q/DQo+ID4NCj4gPiBPVE9IIERhdmlkIExhaWdodCB3YXMgbWFraW5nIHN1Z2dlc3Rpb25z IG9uIG1vdmluZyB0aGUgbG9hZCB0byB0aGUNCj4gPiBmb3JrL2V4ZWMgcGF0aCBlYXJsaWVyIGlu IHRoZSB0aHJlYWQsIGJ1dCBPVE9IIEFsIFZpcm8gbWVudGlvbmVkIGENCj4gPiDigJhwb3J0YWJs ZSBzb2x1dGlvbuKAmSwgdGhvdWdoIHRoYXQgY291bGQgaGF2ZSBiZWVuIHRvIGEgc3BlY2lmaWMg aXNzdWUNCj4gPiByYXRoZXIgdGhhbiB0aGUgbW9yZSBnZW5lcmFsIGNhc2UuDQo+ID4NCj4gPiBI b3cgd291bGQgeW91IHJlY29tbWVuZCBhcHByb2FjaGluZyBhbiBhY2NlcHRhYmxlIGNvc3QgaXMg cHJvZ3Jlc3NlZD8NCj4gPiBJdGVyYXRlIG9uIHBhdGNoIHZlcnNpb25zPyAgT3BlbiBhIGJ1Z3pp bGxhLmtlcm5lbC5vcmcgZm9yIGNlbnRyYWwNCj4gPiB0cmFja2luZyBhbmQgbGlua2luZyBmcm9t IHRoZSBvdGhlciBwcm9qZWN0cz8gIC4uPw0KPiANCj4gUXVvdGluZyBmcm9tIHRoYXQgZ28gdGhy ZWFkDQo+IA0KPiAiSWYgdGhlIE9TIGhhZCBhICJjbG9zZSBhbGwgZmRzIGFib3ZlIHgiLCB3ZSBj b3VsZCB1c2UgdGhhdC4gKEkgZG9uJ3Qga25vdyBvZiBhbnkgdGhhdCBkbywgYnV0IGl0IHN1cmUN Cj4gd291bGQgaGVscC4pIg0KPiANCj4gU28gd2h5IGNhbid0IHRoaXMgYmUgc29sdmVkIHdpdGg6 DQo+IGNsb3NlX3JhbmdlKGZkX2ZpcnN0LCBmZF9sYXN0LCBDTE9TRV9SQU5HRV9DTE9FWEVDIHwg Q0xPU0VfUkFOR0VfVU5TSEFSRSk/DQo+IGUuZy4NCj4gY2xvc2VfcmFuZ2UoMTAwLCB+MFUsIENM T1NFX1JBTkdFX0NMT0VYRUMgfCBDTE9TRV9SQU5HRV9VTlNIQVJFKT8NCg0KVGhhdCBpcyBhIHJl bGF0aXZlbHkgcmVjZW50IGxpbnV4IHN5c3RlbSBjYWxsLg0KQWx0aG91Z2ggaXQgY2FuIGJlICht b3N0bHkpIGVtdWxhdGVkIGJ5IHJlYWRpbmcgL3Byb2MvZmQNCi0gYnV0IHRoYXQgbWF5IG5vdCBi ZSBtb3VudGVkLg0KDQpJbiBhbnkgY2FzZSBhbm90aGVyIHRocmVhZCBjYW4gb3BlbiBhbiBmZCBi ZXR3ZWVuIHRoZSBjbG9zZV9yYW5nZSgpDQphbmQgZm9yaygpIGNhbGxzLg0KDQooSSBjYW4ndCBy ZW1lbWJlciB3aGF0IEkgc2FpZCBiZWZvcmUgOi0pDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVk IEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5l cywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=