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 14887C433EF for ; Wed, 15 Dec 2021 11:51:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242209AbhLOLvz (ORCPT ); Wed, 15 Dec 2021 06:51:55 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:24185 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236958AbhLOLvy (ORCPT ); Wed, 15 Dec 2021 06:51:54 -0500 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-124-_dpB1O-2NOunUQz0c53HRA-1; Wed, 15 Dec 2021 11:51:51 +0000 X-MC-Unique: _dpB1O-2NOunUQz0c53HRA-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 15.0.1497.26; Wed, 15 Dec 2021 11:51:50 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.026; Wed, 15 Dec 2021 11:51:50 +0000 From: David Laight To: 'Vlastimil Babka' , Christoph Hellwig , Hyeonggon Yoo <42.hyeyoo@gmail.com> CC: Baoquan He , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "akpm@linux-foundation.org" , "cl@linux.com" , "John.p.donnelly@oracle.com" , "kexec@lists.infradead.org" , "stable@vger.kernel.org" , Pekka Enberg , David Rientjes , Joonsoo Kim Subject: RE: [PATCH v3 5/5] mm/slub: do not create dma-kmalloc if no managed pages in DMA zone Thread-Topic: [PATCH v3 5/5] mm/slub: do not create dma-kmalloc if no managed pages in DMA zone Thread-Index: AQHX8Z9KFPBHK7AOm0iccdN5CkYjd6wzbbQg Date: Wed, 15 Dec 2021 11:51:50 +0000 Message-ID: <67ff367b7a90452f8c009707a00e67b2@AcuMS.aculab.com> References: <20211213122712.23805-1-bhe@redhat.com> <20211213122712.23805-6-bhe@redhat.com> <20211213134319.GA997240@odroid> <20211214053253.GB2216@MiWiFi-R3L-srv> <20211215044818.GB1097530@odroid> <20211215070335.GA1165926@odroid> <20211215072710.GA3010@lst.de> 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 RnJvbTogVmxhc3RpbWlsIEJhYmthDQo+IFNlbnQ6IDE1IERlY2VtYmVyIDIwMjEgMTA6MzQNCj4g DQo+IE9uIDEyLzE1LzIxIDA4OjI3LCBDaHJpc3RvcGggSGVsbHdpZyB3cm90ZToNCj4gPiBPbiBX ZWQsIERlYyAxNSwgMjAyMSBhdCAwNzowMzozNUFNICswMDAwLCBIeWVvbmdnb24gWW9vIHdyb3Rl Og0KPiA+PiBJJ20gbm90IHN1cmUgdGhhdCBhbGxvY2F0aW5nIGZyb20gWk9ORV9ETUEzMiBpbnN0 ZWFkIG9mIFpPTkVfRE1BDQo+ID4+IGZvciBrZHVtcCBrZXJuZWwgaXMgbmljZSB3YXkgdG8gc29s dmUgdGhpcyBwcm9ibGVtLg0KPiA+DQo+ID4gV2hhdCBpcyB0aGUgcHJvYmxlbSB3aXRoIHpvbmVz IGluIGtkdW1wIGtlcm5lbHM/DQo+IA0KPiBNeSB1bmRlcnN0YW5kaW5nIGlzIHRoYXQga2R1bXAg a2VybmVsIGNhbiBvbmx5IHVzZSBwaHlzaWNhbCBtZW1vcnkgdGhhdCBpdA0KPiBnb3QgcmVzZXJ2 ZWQgYnkgdGhlIG1haW4ga2VybmVsLCBhbmQgdGhlIG1haW4ga2VybmVsIHdpbGwgcmVzZXJ2ZSBz b21lIGJsb2NrDQo+IG9mIG1lbW9yeSB0aGF0IGRvZXNuJ3QgaW5jbHVkZSBhbnkgcGFnZXMgZnJv bSBaT05FX0RNQSAoZmlyc3QgMTZNQiBvZg0KPiBwaHlzaWNhbCBtZW1vcnkgb3Igd2hhdG5vdCku IA0KLi4uDQoNCklzIHRoZXJlIHN0aWxsIGFueSBzdXBwb3J0IGZvciBhbnkgb2YgdGhlIHZlcnkg b2xkIGhhcmR3YXJlIHRoYXQgY291bGQgb25seQ0Kc3VwcG9ydCAyNGJpdCBETUE/DQoNCkkgdGhp bmsgdGhlIEFNRCBQQ25ldC1JU0EgYW5kIFBDbmV0LVBDSSBldGhlcm5ldCAobGFuY2UpIHdlcmUg Ym90aCAzMmJpdCBtYXN0ZXJzLg0KKEkgZG9uJ3QgcmVtZW1iZXIgZXZlciBoYXZpbmcgdG8gd29y cnkgYWJvdXQgcGh5c2ljYWwgYWRkcmVzc2VzLikNCkknbSBzdXJlIEkgcmVtZW1iZXIgc29tZSBv bGQgU0NTSSBib2FyZHMgb25seSBiZWluZyBhYmxlIHRvIGRvIDI0Yml0IERNQS4NCkJ1dCBJIGNh bid0IHJlbWVtYmVyIHdoaWNoIGJ1cyBpbnRlcmZhY2UgdGhleSB3ZXJlLg0KVW5saWtlbHkgdG8g YmUgSVNBIGJlY2F1c2UgaXQgaGFzIGFsd2F5cyBiZWVuIGhhcmQgdG8gZ2V0IGEgbW90aGVyYm9h cmQNCkRNQSBjaGFubmVsIGludG8gJ2Nhc2NhZGUgbW9kZScuDQoNCk1pZ2h0IGhhdmUgYmVlbiBz b21lIEVJU0EgYm9hcmRzIC0gYW55b25lIHN0aWxsIHVzZSB0aG9zZT8NClNvIHdlIGFyZSBsZWZ0 IHdpdGggZWFybHkgUENJIGJvYXJkcy4NCg0KSXQgcmVhbGx5IGlzIHdvcnRoIGxvb2tpbmcgYXQg d2hhdCBhY3R1YWxseSBuZWVkcyBpdCBhdCBhbGwuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVk IEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5l cywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=