Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp1886382ybl; Sat, 1 Feb 2020 08:28:17 -0800 (PST) X-Google-Smtp-Source: APXvYqwxGmNmnWewoLIbLR87SHIcs9vrGwnM0KnxtODnuSvGk+xSdDlGgbnxkFsol9cyH3Inacvp X-Received: by 2002:a54:448b:: with SMTP id v11mr9619704oiv.74.1580574497880; Sat, 01 Feb 2020 08:28:17 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1580574497; cv=none; d=google.com; s=arc-20160816; b=RJgNHRuV/ogtFDQteh2CYIvAYDGmSICb3n7yFcMYqeXO/IqjBOuuQKlZgEhIVxKRJl ym/8Dsc4XrtDLCFFwtZORnVeIM/iaa/40DK4v4szG4tUZmCYVcBuPJaNauvcE4YKKndO +5YLFW0XwQljSSppuVTf5Dc0kuwb9nbKhx9utUo7JSMoO2ftF4vFlqv6xpx1Nz+Uux5f JM0g4zzBlj8QOsQO9G+Q+n/3+dDf51OjMO47Rb15RDc7+796YiYMsDHflkKu6ojV/FxY r+vu2vh/3Sn9aTKtz5tQFqWq2QG5f9jsIpj8lPxyzavUMZo5XwnpZBXBsbVcimYp52ku ZchA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:to:subject:dkim-signature; bh=w0PjGS/klgnrRtPNKFCF6fGGDejuNhQNgoqlU58Tch0=; b=t7UO0oixQ5tZZPkkjpVmheNULb2tAf3HX5AaGxnbFTP5uo4Dt66mBSlN8Brbr8IHxo N9G32VSgiuCNNM5QdYUBJpA1QqpXsKXidEwUNMPmfAU6d55iKxiAqSLDOTn+xosKjQ3+ 7Ir9iYYHY2zokmDzBGVq1PCfcdaiUuhUPf5B06lcmwaWSr5+2jMt41gS3QkTXtG5hezF s8q6F8bKFOgDNFd/ydPsaohliuhoBiPum9iYvxqWhX4nrXjqZKuvdtOv51J+PCyK8Fn0 vdc2L9LdRjxQGrMoJ03jBWK5phZ1ReqLtDAb7Z51mBCN2QeMKTO8rbGZRKMQnTQsiz8C +QKw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel-dk.20150623.gappssmtp.com header.s=20150623 header.b=wAo0xbc1; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id n11si4683723otf.36.2020.02.01.08.28.06; Sat, 01 Feb 2020 08:28:17 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel-dk.20150623.gappssmtp.com header.s=20150623 header.b=wAo0xbc1; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726773AbgBAQ0S (ORCPT + 99 others); Sat, 1 Feb 2020 11:26:18 -0500 Received: from mail-pf1-f175.google.com ([209.85.210.175]:46337 "EHLO mail-pf1-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726622AbgBAQ0S (ORCPT ); Sat, 1 Feb 2020 11:26:18 -0500 Received: by mail-pf1-f175.google.com with SMTP id k29so5079913pfp.13 for ; Sat, 01 Feb 2020 08:26:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=w0PjGS/klgnrRtPNKFCF6fGGDejuNhQNgoqlU58Tch0=; b=wAo0xbc12Nh4hBoZVjwv+emR9n/jSarM4NO7bzpPeAFDhzcuD4s73If4amekxIh8IB DO/EFDkqEuHsWJN9yzrZpuPKz2HeXhADf6All8yxhV4FzVl9Tgy/nTMLFVxdvyRLN9mg JiTXclzNVzUv+krA2I4fpeESlvxWHuCLciHRT1cfQWVLkTAgwRnhf/4wMq4uHyl2FTMx xrhU+sVzKtvYvSFEbOuVhyOkFYDD6RCYqy4n0QTFkZEsI2CqDEi8GU1PtXbVzikUyFr7 /IKfrTo+wVuZ4waRqyxchYbj0VoRgaFInimhuH6XyYGNgFDdvOPxlqx30Q7gZsGGvpSt W77w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=w0PjGS/klgnrRtPNKFCF6fGGDejuNhQNgoqlU58Tch0=; b=EFEXam1VEqnTvB96A34tmoKA2I4im8VnuTUCpd6FkKZOG7reneFYVY1dwWoHNAQ4Yk oT/Ad0Z/0uxMnwtQLrq8qrqJDotVjddu3k3vK/5oYydSfcoUX8zoGbDmeFfGyUxOtG+0 xujjmoHuNkUAU/ofh7IIUZabbG8D6o07mBDQzysAes5NlauEgxwcsGQub6UUCkNRVKTC 0hjAhxItnzYnS4qQ2vRJrO0bMacgaVFKfMwvTii98gNWFPYOFLrMQqjTHF6ogoxPW9ze nAt/J0M9rRZDNKqMTls8tbCZTEmjwdC5EUXxvCWJqdVbb/vqB/ECX7MzXOprcuucxLRD itfQ== X-Gm-Message-State: APjAAAX+tmVOMrVp1gX1a6vVyiJXAyehsiCZFZ3A5f3lDKP0LwX7RBlV YBVcqKVEeAwoDPyc3MM7eKmWr0ZtDa4= X-Received: by 2002:a62:1889:: with SMTP id 131mr16240997pfy.250.1580574376482; Sat, 01 Feb 2020 08:26:16 -0800 (PST) Received: from [192.168.1.188] ([66.219.217.145]) by smtp.gmail.com with ESMTPSA id c14sm14642299pfn.8.2020.02.01.08.26.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 01 Feb 2020 08:26:16 -0800 (PST) Subject: Re: [PATCH] io_uring: iterate req cache backwards To: Pavel Begunkov , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: From: Jens Axboe Message-ID: Date: Sat, 1 Feb 2020 09:26:14 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/31/20 5:58 PM, Pavel Begunkov wrote: > Grab requests from cache-array from the end, so can get by only > free_reqs. Applied, thanks. -- Jens Axboe