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 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 80352C49360 for ; Mon, 14 Jun 2021 07:54:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5013F61352 for ; Mon, 14 Jun 2021 07:54:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232552AbhFNH4I (ORCPT ); Mon, 14 Jun 2021 03:56:08 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:49808 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232536AbhFNH4G (ORCPT ); Mon, 14 Jun 2021 03:56:06 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mtapsc-1-JvShZJ_LMNqZy9EC7CzP_Q-1; Mon, 14 Jun 2021 08:54:01 +0100 X-MC-Unique: JvShZJ_LMNqZy9EC7CzP_Q-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Mon, 14 Jun 2021 08:54:00 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.018; Mon, 14 Jun 2021 08:54:00 +0100 From: David Laight To: 'Victor Stewart' , Pavel Begunkov CC: io-uring , Jens Axboe , "linux-block@vger.kernel.org" , LKML , bpf , "lsf-pc@lists.linux-foundation.org" Subject: RE: io_uring: BPF controlled I/O Thread-Topic: io_uring: BPF controlled I/O Thread-Index: AQHXW85OPTAHTIrwlU6lTLNP07tyDqsTLD+g Date: Mon, 14 Jun 2021 07:54:00 +0000 Message-ID: <2d4e188665c5425296f2da0e96c744af@AcuMS.aculab.com> References: <23168ac0-0f05-3cd7-90dc-08855dd275b2@gmail.com> 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: io-uring@vger.kernel.org RnJvbTogVmljdG9yIFN0ZXdhcnQNCj4gU2VudDogMDcgSnVuZSAyMDIxIDE5OjUxDQouLi4NCj4g Y29pbmNpZGVudGFsbHkgaSdtIHRvc3NpbmcgYXJvdW5kIGluIG15IG1pbmQgYXQgdGhlIG1vbWVu dCBhbiBpZGVhIGZvcg0KPiBvZmZsb2FkaW5nDQo+IHRoZSBQSU5HL1BPTkcgb2YgYSBRVUlDIHNl cnZlci9jbGllbnQgaW50byB0aGUga2VybmVsIHZpYSBlQlBGLg0KPiANCj4gcHJvYmxlbSBiZWlu ZywgYmVpbmcgdGhhdCBRVUlDIGlzIHVzZXJzcGFjZSBydW4gdHJhbnNwb3J0IGFuZCB0aGF0IE5B VC1lZCBVRFANCj4gbWFwcGluZ3MgY2FuJ3QgYmUgZXhwZWN0ZWQgdG8gc3RheSBvcGVuIGxvbmdl ciB0aGFuIDMwIHNlY29uZHMsIFFVSUMNCj4gYXBwbGljYXRpb25zDQo+IGJhcmUgYSBsYXJnZSBj b3N0IG9mIGNvbnRleHQgc3dpdGNoaW5nIHdha2UtdXAgdG8gY29uZHVjdCBjb25uZWN0aW9uIGxp ZmV0aW1lDQo+IG1haW50ZW5hbmNlLi4uIGVzcGVjaWFsbHkgd2hlbiBtYW5hZ2luZyBhIGxhcmdl IG51bWJlciBvZiBtb3N0bHkgaWRsZSBsb25nIGxpdmVkDQo+IGNvbm5lY3Rpb25zLiBzbyBvZmZs b2FkaW5nIHRoaXMgbWFpbnRlbmFuY2Ugc2VydmljZSBpbnRvIHRoZSBrZXJuZWwNCj4gd291bGQg YmUgYSBncmVhdA0KPiBlZmZpY2llbmN5IGJvb24uDQo+IA0KPiB0aGUgbWFpbiBpbXBlZGltZW50 IGlzIHRoYXQgYWNjZXNzIHRvIHRoZSBrZXJuZWwgY3J5cHRvIGxpYnJhcmllcw0KPiBpc24ndCBj dXJyZW50bHkgcG9zc2libGUNCj4gZnJvbSBlQlBGLiB0aGF0IHNhaWQsIGNvbm5lY3Rpb24gd2lk ZSBjcnlwdG8gb2ZmbG9hZCBpbnRvIHRoZSBOSUMgaXMgYQ0KPiBmcmVxdWVudGx5IG1lbnRpb25l ZA0KPiBzdWJqZWN0IGluIFFVSUMgY2lyY2xlcywgc28gb25lIGNvdWxkIGFyZ3VlIGJldHRlciB0 byBhbGxvY2F0ZSB0aGUNCj4gdGltZSB0byBOSUMgY3J5cHRvIG9mZmxvYWQNCj4gYW5kIHRoZW4g c2ltcGx5IGNvbmR1Y3QgdGhpcyBQSU5HL1BPTkcgb2ZmbG9hZCBpbiBwbGFpbiB0ZXh0Lg0KDQpI bW1tbS4uLiBhIGdvb2QgZXhhbXBsZSBvZiBob3cgbm90IHRvIHR5cGUgZW1haWxzLg0KDQpUaG91 Z2h0LCBkb2VzIHRoZSBVRFAgdHggbmVlZGVkIHRvIGtlZXAgdGhlIE5BVCB0YWJsZXMgYWN0aXZl DQpuZWVkIHRvIGJlIGVuY3J5cHRlZD8NCkEgc2luZ2xlIGJ5dGUgVURQIHBhY2tldCB3b3VsZCBk byB0aGUgdHJpY2suDQpZb3UganVzdCBuZWVkIHNvbWV0aGluZyB0aGUgcmVtb3RlIHN5c3RlbSBp cyBkZXNpZ25lZCB0byBpZ25vcmUuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3Mg TGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQ VCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=