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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 3574FC433B4 for ; Tue, 20 Apr 2021 17:59:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6ABC613CD for ; Tue, 20 Apr 2021 17:59:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233225AbhDTR7d (ORCPT ); Tue, 20 Apr 2021 13:59:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231549AbhDTR7d (ORCPT ); Tue, 20 Apr 2021 13:59:33 -0400 Received: from mail-ej1-x62e.google.com (mail-ej1-x62e.google.com [IPv6:2a00:1450:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3470FC06174A; Tue, 20 Apr 2021 10:59:00 -0700 (PDT) Received: by mail-ej1-x62e.google.com with SMTP id v6so58309488ejo.6; Tue, 20 Apr 2021 10:59:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=f5aVc+Rvip+i9wMcJgMkN6n1iKUg3nhAfrxBMVSyMT4=; b=vRUxfANqM5gmEe+JEi/nYpjRog+dg4T69TNipoOZUaYkZAvwQmisFgJAtp0tFTn4bc nt0LT/W1FWHrlivE3I+Bs99iBJFEGeFI/2KwB3hwMI+4cr2ADax+gWvD5E0NjspkqUMY 0fF1FhIoP0IIXzUJO/5ppHi/6U68dF9YuzyyA+A70jMPFOAW0loNsYb/ZBGjpYCztITq hH/1Xdqwswh/tTEwoT9iPrKLVvVBRtphbXq/2OjdKbdvTidWEZVprz5evxKQoQWT8koF 3HmKDNxTcX6Dszyunwm8hJQmycfKQb1x1JnQXvbiqJbHNg6frX4iYM0D8ppgMRBwb5EC Hpig== 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; bh=f5aVc+Rvip+i9wMcJgMkN6n1iKUg3nhAfrxBMVSyMT4=; b=T4rSOneaOFkeppqcf/TPQuqfMztHJ+aYcs9XvpfsNFd/Pmx0XJuwyCVVBvwzd3nY/9 THr2OJ2FCEHkenZLTXKbqxMenXERKetBfDCBXaQo8IC214T4ZlAAaBEnGuHFVMa/gvYH EyMA2uX4LTNCrm/ElpxzN93p9FGMXcI6HSRljHmYkAif6HOvwbGzOGSAXm/7M/hSfuUx 0Oz+noCANzmjeOIs6/jQN+gAI5fVwzQU5PPRNz7nIizcoI7zQKgkbCoEUyZ54IOOzs7g 0hHJLzhfZVSFKb4lX7FVOWuCmTDvFizBpOMpL4TFlSfau1D23bPbrUXogpk5/eM9IFAc 53AA== X-Gm-Message-State: AOAM5304uiyxI8YtB2ogllnjHVKbP3bnc67fEcXsTAwwF+IMoufTA4ZU EGjvDeuXVnJ0TJye3XxWe4o1/6gruQ== X-Google-Smtp-Source: ABdhPJzg3UQt5rHaAWRDbjaVURR4h5zvemaUui/0KjMvb56pW5ExH/QtQ/Ip8bFpXf7E2bMmRWcmIg== X-Received: by 2002:a17:906:c787:: with SMTP id cw7mr23033729ejb.157.1618941538855; Tue, 20 Apr 2021 10:58:58 -0700 (PDT) Received: from localhost.localdomain ([46.53.250.121]) by smtp.gmail.com with ESMTPSA id z22sm13269026ejr.60.2021.04.20.10.58.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Apr 2021 10:58:58 -0700 (PDT) Date: Tue, 20 Apr 2021 20:58:56 +0300 From: Alexey Dobriyan To: Michal Hocko Cc: Matthew Wilcox , Mike Rapoport , Jonathan Corbet , Andrew Morton , Eric Dumazet , Mike Rapoport , linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org Subject: Re: [PATCH v2] docs: proc.rst: meminfo: briefly describe gaps in memory accounting Message-ID: References: <20210420121354.1160437-1-rppt@kernel.org> <20210420132430.GB3596236@casper.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Tue, Apr 20, 2021 at 03:57:07PM +0200, Michal Hocko wrote: > On Tue 20-04-21 14:24:30, Matthew Wilcox wrote: > > On Tue, Apr 20, 2021 at 03:13:54PM +0300, Mike Rapoport wrote: > > > Add a paragraph that explains that it may happen that the counters in > > > /proc/meminfo do not add up to the overall memory usage. > > > > ... that is, the sum may be lower because memory is allocated for other > > purposes that is not reported here, right? > > yes. Many direct page allocator users are not accounted in any of the > existing counters. Does virtio_balloon dereserve special mention? >From inside VM memory borrowing looks like one giant memory leak resulting in support tickets (not that people who file them read internal kernel documentation...)