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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 2DC5EC2D0F0 for ; Mon, 30 Mar 2020 22:28:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 00EAB20771 for ; Mon, 30 Mar 2020 22:28:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585607285; bh=F/zp406/fsE4ruRPq2jZWsW1yzqweN5tKhcb/NQFXXk=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=IoQH/TFYWz1/AleG93V4nz3M8XA1fmy+G6Rt73wt65ERKnH3d9pE3Pf7qompMpFxV IMQwhTF96f4oJorlskEQ4UYyE9n/MMo20bZ4+80bpqd/w5jzzShgHJMbC76MzWsxD7 JHkKVnruRaOGyyIRl4NG65bNQ9VXOSnmuIUpRYZA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729140AbgC3W2D (ORCPT ); Mon, 30 Mar 2020 18:28:03 -0400 Received: from mail-lj1-f193.google.com ([209.85.208.193]:38330 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728980AbgC3W2D (ORCPT ); Mon, 30 Mar 2020 18:28:03 -0400 Received: by mail-lj1-f193.google.com with SMTP id w1so19886137ljh.5 for ; Mon, 30 Mar 2020 15:28:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=9xJXkRShIw9WgOqBCHeFKsSXZRGj0KeqvyNceVAQ38U=; b=egjH8Qp8DEHoukQZETeJK0y19v9Qnw8BqRqy6nkQJlj3TGJ8FWYvzd85grCYYAhjv6 yjiN/YkYH1qVU/GALP+dPTWZCpFIbyJy3lIFCA3WoPc2/oknZLWt8Sur/O4bocLgcjo5 45Mwdd5jIy0JZEFgAM+p8VJZx+evSCo52vbYM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=9xJXkRShIw9WgOqBCHeFKsSXZRGj0KeqvyNceVAQ38U=; b=T3KX1H5bM5o8qCAcEErZpME+Y9I8Fyy+B5ELLemgBE4h31UOnulTrmFaS/3Bc7OKsz 5NkFk3s2yOJSiKkmzyLH3NIRMpmyf3RshbgSQ/yMBzaBV26nXpsOZJTWrOB3g9w93haE 2I95QRm6+bL7aRCZX+5bfmuFwOUmcMCEf3fXuuBCRxAt4ULYjA0u8+wbJogXFEIpBf5X lc0eUdD8wapAFZqA1CMZkJPB+We8iUhgZSk+PvNt0z0wv+u4EUOSXB6b5YTKs5SE2vRz Qo6OAvhT/Gpo/SrejaaomyNW0BwIJ9fRT+gmnCg5Glqjd114bmCvJ/nyf6W83utc3+XC NPxA== X-Gm-Message-State: AGi0Pub377fQxDw9Avm2q2juAO9VLYGdvRexX3UP1iEt/9OFJGierWxj +KdvCEmTiulucm1cbdWRd/5xIywMP08= X-Google-Smtp-Source: APiQypI1UY8Z1UjM0AiUgpKhN4oYj9yhCBAGs2i3ETSLb3w2LN4uxtSA4Ch1lDseLWfhCP2Cqg6uUw== X-Received: by 2002:a2e:7606:: with SMTP id r6mr8103829ljc.118.1585607279900; Mon, 30 Mar 2020 15:27:59 -0700 (PDT) Received: from mail-lj1-f180.google.com (mail-lj1-f180.google.com. [209.85.208.180]) by smtp.gmail.com with ESMTPSA id y3sm6385646ljh.15.2020.03.30.15.27.58 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 30 Mar 2020 15:27:58 -0700 (PDT) Received: by mail-lj1-f180.google.com with SMTP id f20so19945939ljm.0 for ; Mon, 30 Mar 2020 15:27:58 -0700 (PDT) X-Received: by 2002:a2e:b4cb:: with SMTP id r11mr8652748ljm.201.1585607278073; Mon, 30 Mar 2020 15:27:58 -0700 (PDT) MIME-Version: 1.0 References: <20200330151441.e3a704f7c98dc70cdce95d0e@linux-foundation.org> In-Reply-To: <20200330151441.e3a704f7c98dc70cdce95d0e@linux-foundation.org> From: Linus Torvalds Date: Mon, 30 Mar 2020 15:27:42 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v2 1/2] mm/memory_hotplug: simplify calculation of number of pages in __remove_pages() To: Andrew Morton Cc: David Hildenbrand , Linux Kernel Mailing List , Linux-MM , Segher Boessenkool , Oscar Salvador , Michal Hocko , Baoquan He , Dan Williams , Wei Yang Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 30, 2020 at 3:14 PM Andrew Morton wrote: > > My nightly check-all-the-patches-for-various-cruft script emails me > about =3D but I didn't' have a test for "o=$m". I just added one. =3D may be the common one, but =20 and =09 are others that end up showing up when whitespace gets quoted for various reasons. Another one is =46 for 'F'. Why? Because some mailers think that "From" at the beginning of a line is the mbox beginning marker, and they'll escape any line that begins with "From" to use "=46rom" instead. Those mailers are wrong (at a _minimum_ it's "From " with a space, and you generally should be even stricter than that), but it happens. And obviously, if there is real 8-bit stuff, you'll get all the real odd hex noise. Linus