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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 5A405C433DB for ; Thu, 21 Jan 2021 10:11:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0EFD3239D0 for ; Thu, 21 Jan 2021 10:11:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727996AbhAUKLi (ORCPT ); Thu, 21 Jan 2021 05:11:38 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:25266 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728866AbhAUKKM (ORCPT ); Thu, 21 Jan 2021 05:10:12 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-189-BXRXaqkPN2KtFxGAXuKLPQ-1; Thu, 21 Jan 2021 10:08:33 +0000 X-MC-Unique: BXRXaqkPN2KtFxGAXuKLPQ-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 21 Jan 2021 10:08:31 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Thu, 21 Jan 2021 10:08:31 +0000 From: David Laight To: 'Linus Torvalds' , Al Viro CC: Christoph Hellwig , Johannes Berg , Oliver Giles , Linux Kernel Mailing List , Greg Kroah-Hartman Subject: RE: Splicing to/from a tty Thread-Topic: Splicing to/from a tty Thread-Index: AQHW75FXm/V94rBWlE2o2nAONgRsB6ox2eiQ Date: Thu, 21 Jan 2021 10:08:30 +0000 Message-ID: <5ce6fe95ee9c4e0f9699a8dc48ec7eab@AcuMS.aculab.com> References: <20210118085311.GA2735@lst.de> <20210118193457.GA736435@zeniv-ca> <20210118195400.GC736435@zeniv-ca> <20210120162608.GB740243@zeniv-ca> <20210120191116.GC740243@zeniv-ca> <20210120231439.GE740243@zeniv-ca> <20210121003835.GF740243@zeniv-ca> In-Reply-To: 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 RnJvbTogTGludXMgVG9ydmFsZHMNCj4gU2VudDogMjEgSmFudWFyeSAyMDIxIDAxOjA0DQo+IE9u IFdlZCwgSmFuIDIwLCAyMDIxIGF0IDQ6MzggUE0gQWwgVmlybyA8dmlyb0B6ZW5pdi5saW51eC5v cmcudWs+IHdyb3RlOg0KPiA+DQo+ID4gT0suLi4gIEkgd29uZGVyIGhvdyBtYW55IGRlYnVnZnMg d3JpdGFibGUgZmlsZXMgYWxsb3cgcHdyaXRlKCkgd2l0aA0KPiA+IEJTIHJlc3VsdHMuLi4NCj4g DQo+IEkgaG9wZSBzb21lIG9mIHRoZW0gY2hlY2sgZm9yICJwb3MgPT0gMCIgd2hlbiB0aGV5IHN0 YXJ0IHBhcnNpbmcgaW50ZWdlcnMuDQo+IA0KPiBCdXQgaG9uZXN0bHksIEkgZG9uJ3QgdGhpbmsg aXQncyBhIGJpZyBkZWFsLiBXZSd2ZSBoYWQgdGhlc2UgdGhpbmdzDQo+IHRoYXQganVzdCBiYXNp Y2FsbHkgYXNzdW1lIHRoYXQgd2hlbmV2ZXIgeW91IHdyaXRlLCB0aGUgb2Zmc2V0IGp1c3QNCj4g ZG9lc24ndCBtYXR0ZXIgYXQgYWxsLCBhbmQgYXMgbG9uZyBhcyBzb21lIG51bWJlciBjb21lcyBp biBvbmUgc2luZ2xlDQo+IHdyaXRlIGNhbGwsIHdlIGFjY2VwdCBpdC4NCj4gDQo+IEJlY2F1c2Ug ZXZlbiBpZiB5b3UgZW5kIHVwIGRvaW5nIHNvbWV0aGluZyBsaWtlIGp1c3QNCj4gDQo+ICAgIGVj aG8gJFNPTUVUSElORyA+IC9zeXMveHl6L2FiYw0KPiANCj4gYW5kIHRoYXQgIiRTT01FVEhJTkci IGNvdWxkIGJlIGRvbmUgbXVsdGlwbGUgd3JpdGVzLCBpbiBwcmFjdGljZSBpdA0KPiBhbGwgd29y a3Mgb3V0IGp1c3QgZmluZSBhbmQgaXQgbmV2ZXIgcmVhbGx5IGlzLiBZb3UgYWxtb3N0IGhhdmUg dG8gdHJ5DQo+IHRvIHNjcmV3IHVwIHdpdGggc29tZXRoaW5nIGxpa2UNCj4gDQo+ICAgKGVjaG8g LW4gMzsgZWNobyAtbiA0KSA+IC9zeXMveHl6L2FiYw0KPiANCj4gdG8gYWN0dWFsbHkgc2VlIHR3 byB3cml0ZXMgb2YgIjMiIGFuZCAiNCIgaW5zdGVhZCBvZiBvbmUgd3JpdGUgd2l0aA0KPiAiMzQi LiBBbmQgaG9uZXN0bHksIGlmIHNvbWVib2R5IGRvZXMgc29tZXRoaW5nIGxpa2UgdGhhdCwgZG8g d2UgcmVhbGx5DQo+IGNhcmU/IFRoZXkgbWlnaHQgZ2V0IDMsIHRoZXkgbWlnaHQgZ2V0IDQsIGFu ZCB0aGV5IG1pZ2h0IGdldCAzNC4gVGhleQ0KPiBnZXQgd2hhdCB0aGV5IGRlc2VydmUuDQoNCk9y IHdvcnNlOg0KCWVjaG8gYWJjID4vc3lzL3h5ei9hYmMNCgllY2hvIHggfCBkZCBicz0xIGNvdW50 PTIgb3NlZWs9MSBjb252PW5vdHJ1bmMgb2Y9L3N5cy94eXovYWJjDQp3aGljaCAoaWYgSSBnb3Qg dGhlIGRkIGNvbW1hbmQgcmlnaHQpIHdvdWxkIGdlbmVyYXRlICJheGMiIG9uIGEgcmVhbCBmaWxl Lg0KDQpPVE9IIG11bHRpcGxlIHNob3J0IHJlYWRzIGFyZSBxdWl0ZSBsaWtlbHkuDQpCZXN0IG5v dCBkb25lIG9uIGEgY291bnRlci4uLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNz IExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAx UFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K