Received: by 2002:a25:31c3:0:0:0:0:0 with SMTP id x186csp345429ybx; Fri, 1 Nov 2019 04:31:50 -0700 (PDT) X-Google-Smtp-Source: APXvYqwLio37+N5wFJXWUdSmiKMYzS1nUNNd6nMpwt6MrVmlIh6ZL6lNMLLA+lRp40/UHcQ/vr4w X-Received: by 2002:a50:a2c5:: with SMTP id 63mr12196759edm.48.1572607910862; Fri, 01 Nov 2019 04:31:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1572607910; cv=none; d=google.com; s=arc-20160816; b=QbbWBORJes6/gGxSDSginsxM+JsHz0XiVc7HmAWogFUouRFqs856i4YhIZiocfs04z liHQ0dzRBGs6M2EWR4sOBPfQxUxbJVaVFRUzzA8WPuy0ArdNZEmh4JwYJdxjOi/YO8BX 96ROV9/wR8jznQMbE4awlbR6IJayEftUIsDzlxgk9ScViAxX8/yXSILdUp6VYD2Hy+kD SVWjFqm4DRmfcxnf2i6POcghyq0UlAC4ISVPjgegY9ny434PxvAn23BsfOJQN3+pdbE1 y1ATkfOaALVPF0/mAr+nzEa0KukJ9rm/fkp9UAvwAnx5JiQqHdjEuzYw7F4W/WDGV0TF zDbQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=efLeBUV2eVsQE5cLBBJiWMyP67QfoKzAnlUnCU8QlEM=; b=BRembsDvzVMCqi6FbgkGqOvWN933h1JZktN7MqOfFgGRi2rF3JI9nglo2/VNfdbP5Y ho7KXOyNjG216r6SF3goVJiT4TeYji606AdYeaA9YATI8xy2da5V+xiyLqmvZ7l9xOs8 FzVdUI+qzliTvbXZH03cOsEaLFRYsGKRqq/SyOnO9zVBBlT8D/iodbflqFrOYCnKZOsP AO8Gf/GJe/0vmIPOc5TXORjj9s2y0nIVsammSmNhLk2wBmHl1hZvykxSJ5+TJUDgpo9N +uECzE8GZbr+m6PJa1YEL26Enci576/LG5QQpL/vVPh2cLskeUft74PWphip/OhfEH10 gx/g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@chrisdown.name header.s=google header.b=SVs6nDPV; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chrisdown.name Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 95si83941edq.244.2019.11.01.04.31.27; Fri, 01 Nov 2019 04:31:50 -0700 (PDT) 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=@chrisdown.name header.s=google header.b=SVs6nDPV; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chrisdown.name Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730333AbfKALJ5 (ORCPT + 99 others); Fri, 1 Nov 2019 07:09:57 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:53147 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726720AbfKALJ5 (ORCPT ); Fri, 1 Nov 2019 07:09:57 -0400 Received: by mail-wm1-f68.google.com with SMTP id c17so1597030wmk.2 for ; Fri, 01 Nov 2019 04:09:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chrisdown.name; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=efLeBUV2eVsQE5cLBBJiWMyP67QfoKzAnlUnCU8QlEM=; b=SVs6nDPVuDStZNT/dKWBmaT2wt6W/bytIThN5wjiM4TlLJ86P1qYvQG8t/GvSaOs+L ZfCoYDcZrWtwa9uaIRuTYDjLfMt/X5edllwC5kGl1rYeYQfVOBUoU3L6QRf0VFZ/2vaW yE0H7nyStl6dKxv8bvsx+WLMqu1fRGmbA94UM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=efLeBUV2eVsQE5cLBBJiWMyP67QfoKzAnlUnCU8QlEM=; b=fU6W1TcM5BE5tb8RaAtL19l46WSk/W3ZVLptIMGBXqs+1TVGC9/Ra9zwLrW86GJ/tK 8++Q2JEIChEPNxbVRNlRRbIjblfkU6KcRs8qa6EnpAPN9nT5NZhurC8F1OFQMhRisZ/E IP8iQna6UrCRd2sW1x1CZkcWx7n3pz/T9v7AQdmuxai+9xf4MpJ2M13MpTsqfAKagFyI 5zKuP3BiwSBxVLax6OkCm/xk4NT6J3ULMpstrvxBjUvws1M/Xv+byWIyFr5RjtQT3C78 8My0QWJ/w1Nr+NBW9tI/baW/qBVSu5FpPIbFtG7YNpxtDSkSnOEzcaDT2n4sPCRVt9vw tl7Q== X-Gm-Message-State: APjAAAUDBOxoaRP0w+W5eREs3LEGm/PCYCeh1XXT74Le/9hN9oPn9Fzx Fc1XrjPABpW6LwM1S7lHbHTuTCBzbHqhxC/X X-Received: by 2002:a1c:2e0f:: with SMTP id u15mr9756846wmu.47.1572606594770; Fri, 01 Nov 2019 04:09:54 -0700 (PDT) Received: from localhost ([2620:10d:c092:180::1:f970]) by smtp.gmail.com with ESMTPSA id a23sm6359703wmj.2.2019.11.01.04.09.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Nov 2019 04:09:54 -0700 (PDT) Date: Fri, 1 Nov 2019 11:09:53 +0000 From: Chris Down To: Andrew Morton Cc: Johannes Weiner , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH] kernel: sysctl: make drop_caches write-only Message-ID: <20191101110953.GC690103@chrisdown.name> References: <20191031221602.9375-1-hannes@cmpxchg.org> <20191031162825.a545a5d4d8567368501769bd@linux-foundation.org> <20191101110901.GB690103@chrisdown.name> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20191101110901.GB690103@chrisdown.name> User-Agent: Mutt/1.12.2 (2019-09-21) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Chris Down writes: >There is evidence that this has already caused confusion[0] for many, >judging by the number of views and votes. I think the reward is higher >than stated here, since it makes the intent and lack of persistent API >in the API clearer, and less likely to cause confusion in future. > >0: https://unix.stackexchange.com/q/17936/10762 s/persistent API/persistent state/