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[23.128.96.18]) by mx.google.com with ESMTP id z27si7259528ejj.493.2020.10.05.05.28.46; Mon, 05 Oct 2020 05:29:09 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725960AbgJEMZ1 (ORCPT + 99 others); Mon, 5 Oct 2020 08:25:27 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:41047 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725936AbgJEMZ0 (ORCPT ); Mon, 5 Oct 2020 08:25:26 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-249-yGCLicPjONOAJwxBgcxibQ-1; Mon, 05 Oct 2020 13:25:22 +0100 X-MC-Unique: yGCLicPjONOAJwxBgcxibQ-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; Mon, 5 Oct 2020 13:25:21 +0100 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; Mon, 5 Oct 2020 13:25:21 +0100 From: David Laight To: 'David Hildenbrand' , Topi Miettinen , Michal Hocko CC: "akpm@linux-foundation.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] mm: optionally disable brk() Thread-Topic: [PATCH] mm: optionally disable brk() Thread-Index: AQHWmv2jTpq5FewPDUy63nD4f9riL6mI3SWA////ggCAABHqwA== Date: Mon, 5 Oct 2020 12:25:21 +0000 Message-ID: <23ca06acdfb44b76892857f9e9871241@AcuMS.aculab.com> References: <20201002171921.3053-1-toiwoton@gmail.com> <653873ef-2a57-37e0-1ac3-fba763652b35@redhat.com> <2a0f5ade-d770-c36e-50bc-ff0c8e9dacbf@gmail.com> <20201005061248.GN4555@dhcp22.suse.cz> <888e62e0-3979-207b-c516-ddfc6b9f3345@redhat.com> <4d325e3e-3139-eded-6781-435fb04fb915@gmail.com> <9dc586f4-38f0-7956-0ab6-bd7921491606@redhat.com> <5fb32353b1964299809fce0c7579a092@AcuMS.aculab.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: linux-kernel@vger.kernel.org RnJvbTogRGF2aWQgSGlsZGVuYnJhbmQNCj4gU2VudDogMDUgT2N0b2JlciAyMDIwIDEzOjE5DQo+ IA0KPiBPbiAwNS4xMC4yMCAxMzoyMSwgRGF2aWQgTGFpZ2h0IHdyb3RlOg0KPiA+IEZyb206IERh dmlkIEhpbGRlbmJyYW5kDQo+ID4+IFNlbnQ6IDA1IE9jdG9iZXIgMjAyMCAxMDo1NQ0KPiA+IC4u Lg0KPiA+Pj4gSWYgaGFyZGVuaW5nIGFuZCBjb21wYXRpYmlsaXR5IGFyZSBzZWVuIGFzIHRyYWRl b2ZmcywgcGVyaGFwcyB0aGVyZQ0KPiA+Pj4gY291bGQgYmUgYSB0b3AgbGV2ZWwgY29uZmlnIGNo b2ljZSAoQ09ORklHX0hBUkRFTklOR19UUkFERU9GRikgZm9yIHRoaXMuDQo+ID4+PiBJdCB3b3Vs ZCBoYXZlIG9wdGlvbnMNCj4gPj4+IC0gImNvbXBhdGliaWxpdHkiIChkZWZhdWx0KSB0byBnZWFy IHF1ZXN0aW9ucyBmb3IgbWF4aW11bSBjb21wYXRpYmlsaXR5LA0KPiA+Pj4gZGVzZWxlY3Rpbmcg YW55IGhhcmRlbmluZyBvcHRpb25zIHdoaWNoIHJlZHVjZSBjb21wYXRpYmlsaXR5DQo+ID4+PiAt ICJoYXJkZW5pbmciIHRvIGdlYXIgcXVlc3Rpb25zIGZvciBtYXhpbXVtIGhhcmRlbmluZywgZGVz ZWxlY3RpbmcgYW55DQo+ID4+PiBjb21wYXRpYmlsaXR5IG9wdGlvbnMgd2hpY2ggcmVkdWNlIGhh cmRlbmluZw0KPiA+Pj4gLSAibm9uZS9tYW51YWwiOiBhc2sgYWxsIHF1ZXN0aW9ucyBsaWtlIGJl Zm9yZQ0KPiA+Pg0KPiA+PiBJIHRoaW5rIHRoZSBnZW5lcmFsIGRpcmVjdGlvbiBpcyB0byBhdm9p ZCBhbiBleHBsb2Rpbmcgc2V0IG9mIGNvbmZpZw0KPiA+PiBvcHRpb25zLiBTbyBpZiB0aGVyZSBp c24ndCBhICpyZWFsKiBkZW1hbmQsIEkgZ3Vlc3MgZ2x1aW5nIHRoaXMgdG8gYQ0KPiA+PiBzaW5n bGUgb3B0aW9uICgiQ09ORklHX1NFQ1VSSVRZX0hBUkRFTklORyIpIG1pZ2h0IGJlIGdvb2QgZW5v dWdoLg0KPiA+DQo+ID4gV291bGRuJ3QgdGhhdCBiZSBiZXR0ZXIgYWNoaWV2ZWQgYnkgcnVuLXRp bWUgY2xvYmJlcmluZw0KPiA+IG9mIHRoZSBzeXNjYWxsIHZlY3RvcnM/DQo+IA0KPiBZb3UgbWVh biB2aWEgc29tZXRoaW5nIGxpa2UgYSBib290IHBhcmFtZXRlcj8gUG9zc2libHkgeWVzLg0KDQpJ IHdhcyB0aGlua2luZyBvZiBsYXRlci4NClNvbWUga2luZCBvZiByZXN0cmljdGVkIHN5c3RlbSBt aWdodCB3YW50IHRoZSAnY2xvYmJlcicNCm1vdW50KCkgYWZ0ZXIgZXZlcnl0aGluZyBpcyBydW5u aW5nLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5 IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRp b24gTm86IDEzOTczODYgKFdhbGVzKQ0K