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 X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 828D1CA9ECF for ; Fri, 1 Nov 2019 11:09:57 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4178C217D9 for ; Fri, 1 Nov 2019 11:09:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chrisdown.name header.i=@chrisdown.name header.b="SVs6nDPV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4178C217D9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chrisdown.name Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id EA0D06B0006; Fri, 1 Nov 2019 07:09:56 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E510F6B0007; Fri, 1 Nov 2019 07:09:56 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D40636B0008; Fri, 1 Nov 2019 07:09:56 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0128.hostedemail.com [216.40.44.128]) by kanga.kvack.org (Postfix) with ESMTP id B41296B0006 for ; Fri, 1 Nov 2019 07:09:56 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with SMTP id 4D3B675BC for ; Fri, 1 Nov 2019 11:09:56 +0000 (UTC) X-FDA: 76107438792.15.brass99_56b902bfa0005 X-HE-Tag: brass99_56b902bfa0005 X-Filterd-Recvd-Size: 3286 Received: from mail-wm1-f67.google.com (mail-wm1-f67.google.com [209.85.128.67]) by imf40.hostedemail.com (Postfix) with ESMTP for ; Fri, 1 Nov 2019 11:09:55 +0000 (UTC) Received: by mail-wm1-f67.google.com with SMTP id z19so4557571wmk.3 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=FTuKZ4ZE7NfKcFObkgjDAVjjewQFf2uQFp23oZdQSMwVOztLFWLsWx+w/PNT+uZ9mj kVMtwhfkdWxlYajkgbHbOcjrhwSiN+wwbTIGcEtWys2s6AWKj0Pe+YFcz/MNvhb3ZvoL NdHP2wZDWWsYFJgANctA5uXkQ7aIQO2mejYqbSTIL7X++OjhUHtGnCdk48WNIWHDKQjc ybJNIl2LR3C5lWSyEZT/w86BgyG7pHTXnYjxrK2yMPz46tbrDNnJP6y+73F44OQK61fo QBim3XHv0TeGXPqSsZS7HSLeLNIexZrRNcgsfMwsTEGLALq8bU289yYPdxUEDAhbtpNa PwKw== X-Gm-Message-State: APjAAAX3MHEe6OJJN++D/uwimsBIPMX+cKe5MO7S7ZS2Oz+ppYIow8Ug HWotZBRJYMTFBd/M9Gm4ATvDWQ== X-Google-Smtp-Source: APXvYqwtz8e2KFotDSkIrc/A9cZrgeg+ndmfC6AnLPShic8k8G6/7xEfIsR7O8flQ/TxCeQ7m6ISqw== 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) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000005, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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/