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 0186EC433EF for ; Mon, 27 Jun 2022 08:25:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233513AbiF0IZg (ORCPT ); Mon, 27 Jun 2022 04:25:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52764 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233445AbiF0IZc (ORCPT ); Mon, 27 Jun 2022 04:25:32 -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 73A696178 for ; Mon, 27 Jun 2022 01:25:30 -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-54-1jANicmsPmWfA7kUguPDXg-1; Mon, 27 Jun 2022 09:25:27 +0100 X-MC-Unique: 1jANicmsPmWfA7kUguPDXg-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; Mon, 27 Jun 2022 09:25:26 +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; Mon, 27 Jun 2022 09:25:26 +0100 From: David Laight To: 'Linus Torvalds' , Joe Perches CC: Andrew Morton , Petr Mladek , Steven Rostedt , Sergey Senozhatsky , Rasmus Villemoes , Matthew Wilcox , Miguel Ojeda , "Kent Overstreet" , Andy Shevchenko , LKML , linux-mm Subject: RE: [RFC[ Alloc in vsprintf Thread-Topic: [RFC[ Alloc in vsprintf Thread-Index: AQHYiZoSZNRPYrXujUmM6V+Dm+02461i46rg Date: Mon, 27 Jun 2022 08:25:26 +0000 Message-ID: References: <20220620004233.3805-1-kent.overstreet@gmail.com> <0a5901f8460f452a89c9b0cda32fb833@AcuMS.aculab.com> <20220620150514.3tjy5dv7pv5frcwd@moria.home.lan> <53d77ae6101a0f24cfb694174d4c7699424c57e8.camel@perches.com> <20220621005752.ohiq5besmy3r5rjo@moria.home.lan> <355e912490dbaef8fe4e12df0201c3f5b439565d.camel@perches.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 RnJvbTogTGludXMgVG9ydmFsZHMNCj4gU2VudDogMjYgSnVuZSAyMDIyIDIxOjE5DQouLg0KPiBU aGF0IGRvZXMgcmVxdWlyZSB0ZWFjaGluZyB0aGUgc3ByaW50X3N5bWJvbCgpIGZ1bmN0aW9ucyB0 aGF0IHRoZXkNCj4gbmVlZCB0byB0YWtlIGEgImxlbmd0aCBvZiBidWZmZXIiIGFuZCByZXR1cm4g aG93IG11Y2ggdGhleSB1c2VkLCBidXQNCj4gdGhhdCB3b3VsZCBzZWVtIHRvIGJlIGEgc2Vuc2li bGUgdGhpbmcgYW55d2F5LCBhbmQgd2hhdCB0aGUgY29kZQ0KPiBzaG91bGQgYWx3YXlzIGhhdmUg ZG9uZT8NCg0KSXQgbmVlZHMgdG8gcmV0dXJuIHRoZSAnbGVuZ3RoIGl0IHdvdWxkIGhhdmUgdXNl ZCcuDQpXaGlsZSBvY2Nhc2lvbmFsbHkgdXNlZnVsIEknbSBwcmV0dHkgc3VyZSB0aGlzIGlzIGFj dHVhbGx5DQphIHNpZGUgZWZmZWN0IG9mIHRoZSB3YXMgdGhhdCBsaWJjIHNucHJpbnRmKCkgd2Fz IG9yaWdpbmFsbHkNCmltcGxlbWVudGVkIChzcHJpbnRmKCkgaGFkIGFuIG9uLXN0YWNrIEZJTEUp Lg0KDQpJbiBhbnkgY2FzZSBpdCBtaWdodCBiZSBzaW1wbGVzdCB0byBwYXNzIGFsbCB0aGVzZSBm dW5jdGlvbnMNCnRoZSB3cml0ZSBwb2ludGVyIGFuZCBidWZmZXIgbGltaXQgYW5kIGhhdmUgdGhl bSByZXR1cm4gdGhlDQpuZXcgd3JpdGUgcG9pbnRlci4NCkl0IGlzIGxpa2VseSB0byBnZW5lcmF0 ZSBtdWNoIGJldHRlciBjb2RlIHRoYXQgcGFzc2luZw0KYSBzdHJ1Y3R1cmUgYnkgcmVmZXJlbmNl Lg0KDQpPbmx5IHRoZSBvcmlnaW5hbCBjYWxsZXIgbmVlZHMgdG8ga25vdyB3aGVyZSB0aGUgYnVm ZmVyIHN0YXJ0cy4NClRoZSBvcmlnaW5hbCBjYWxsZXIgaXMgYWxzbyB0aGUgb25seSBwbGFjZSB0 aGF0IG5lZWRzIHRvDQplbnN1cmUgdGhhdCB0aGUgc3RyaW5nIGlzIGNvcnJlY3RseSB0ZXJtaW5h dGVkLg0KDQpZb3UnZCBnZXQgaGVscGVycyBsaWtlOg0KDQpjaGFyICphZGRfY2hhcihjaGFyICp3 cCwgY29uc3QgY2hhciAqbGltLCBjaGFyIGFkZCkNCnsNCglpZiAobGltIDwgd3ApDQoJCSp3cCA9 IGFkZDsNCglyZXR1cm4gd3AgKyAxOw0KfQ0KDQpjaGFyICphZGRfY2hhcnMoY2hhciAqd3AsIGNv bnN0IGNoYXIgKmxpbSwgY29uc3QgY2hhciAqYWRkLCBsb25nIGludCBjb3VudCkNCnsNCglsb25n IGludCBzcGFjZSA9IGxpbSAtIHdwOw0KCWxvbmcgaW50IGk7DQoNCglpZiAoc3BhY2UgPiBjb3Vu dCkNCgkJc3BhY2UgPSBjb3VudDsNCglmb3IgKGkgPSBpOyBpIDwgc3BhY2U7IGkrKykNCgkJd3Bb aV0gPSBhZGRbaV07DQoJDQoJcmV0dXJuIHdwICsgY291bnQ7DQp9DQoNCmNoYXIgKmFkZF9zdHIo Y2hhciAqd3AsIGNvbnN0IGNoYXIgKmxpbSwgY29uc3QgY2hhciAqYWRkKQ0Kew0KCXdoaWxlICgq YWRkKSB7DQoJCWlmICh3cCA+PSBsaW0pDQoJCQlyZXR1cm4gd3AgKyBzdHJsZW4oYWRkKTsNCgkJ KndwKysgPSAqYWRkKys7DQoJfQ0KCQ0KCXJldHVybiB3cDsNCn0NCg0KCURhdmlkDQoNCi0NClJl Z2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0 b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykN Cg==