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=-0.8 required=3.0 tests=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 344D8C3A5A2 for ; Tue, 3 Sep 2019 21:55:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDE1A21897 for ; Tue, 3 Sep 2019 21:55:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qjC6fUd8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726462AbfICVzU (ORCPT ); Tue, 3 Sep 2019 17:55:20 -0400 Received: from mail-pg1-f171.google.com ([209.85.215.171]:45966 "EHLO mail-pg1-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726105AbfICVzT (ORCPT ); Tue, 3 Sep 2019 17:55:19 -0400 Received: by mail-pg1-f171.google.com with SMTP id 4so6409048pgm.12 for ; Tue, 03 Sep 2019 14:55:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version; bh=Gv9/+rRRkWgEfLiUgicWpon/RMx52rySUXaIWWH7fWs=; b=qjC6fUd8emlan9xz8u2gflzvXSzWC71ly7lKK6V0T8z1uBlJNVwLC/6TKlD7uplU9z pijgEeqpELU2KDMvD8AwWHpS9mDrMNy5Ivh9QLxrtd2y16chZx31b9gLhCGEChEQRcaM Hw+Dm9DpDAyKYEj3z37ac3svEiKCrooNZhiCDQb09DyH2a/x2qLIalB7uaVzLmR5BT50 J5BBc3Q5Z1opeUUiCuLHLAgX14izU4crHrloUV1BmATj+TmknZEJFP6q1+3Q4eVr8Kcq qj4Ulq/b6EdXuP+6a4HBRgA7+ahLx8ZB3qzpGvDEBpq2XZrebRXSbcipWnzC5K732b2W yiDA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version; bh=Gv9/+rRRkWgEfLiUgicWpon/RMx52rySUXaIWWH7fWs=; b=oYil1Vk5pqwYTKJaKoLtEU/E8ehtQvYv5IVu/Jp/lzSUAOy0VQ5vfFKzL5/6BNqJfi sKDP8skzHgyZ9gGmskVYKQ/gfwa9hLeKCEoJ9lNyH2xpOm+Fad+GIx/d7gP+lwPZp1AN b5O+ZhwQ7A6vxjfJDj7fajKhA9hUxTctJcuEVbxFXNfy6ADPHzdrvUbdQz6RTbwMt+ev iIDebKHz9O1uhxOw3OH++SL8yUwjvXX/dq/GMLAGL2cCzZqzwKF9vkKfC+2wcqqVlv25 xkstiNc32gIjBwO4UvrpxKgCVJXBhkNamGM6wsYFxM2Ubdvjqq5A613g1xjiihmYM4cn +H6g== X-Gm-Message-State: APjAAAUIqDPMNBr1sXE3kcu/N18DfS9TjaT9QX3/AQYNBhk7Og8gu1a0 EXgHgcfNI++X2Sd1pM8UD3BHBGxU X-Google-Smtp-Source: APXvYqz1LDKgE00E/3WQRan6XX9HzVsaWnWFST7Y6aKrxKpe2tcDd+kQCDfPjjaTWoaLGeaO+rq4ig== X-Received: by 2002:a63:c006:: with SMTP id h6mr31977165pgg.290.1567547718997; Tue, 03 Sep 2019 14:55:18 -0700 (PDT) Received: from [172.20.41.163] ([2620:10d:c090:200::1:503d]) by smtp.gmail.com with ESMTPSA id x2sm480697pja.22.2019.09.03.14.55.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Sep 2019 14:55:18 -0700 (PDT) From: "Jonathan Lemon" To: Netdev Subject: rtnl_lock() question Date: Tue, 03 Sep 2019 14:55:17 -0700 X-Mailer: MailMate (1.12.5r5635) Message-ID: <29EC5179-D939-42CD-8577-682BE4B05916@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; markup=markdown Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org How appropriate is it to hold the rtnl_lock() across a sleepable memory allocation? On one hand it's just a mutex, but it would seem like it could block quite a few things. -- Jonathan