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=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 82192C7618B for ; Fri, 26 Jul 2019 09:57:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50FB22171F for ; Fri, 26 Jul 2019 09:57:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726184AbfGZJ5q (ORCPT ); Fri, 26 Jul 2019 05:57:46 -0400 Received: from mail-qt1-f196.google.com ([209.85.160.196]:34308 "EHLO mail-qt1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725815AbfGZJ5q (ORCPT ); Fri, 26 Jul 2019 05:57:46 -0400 Received: by mail-qt1-f196.google.com with SMTP id k10so52062515qtq.1; Fri, 26 Jul 2019 02:57:45 -0700 (PDT) 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=/iufb0TTF1GAeZGPOnqhrgxVKxrEycW/hHzn4npZ/Lk=; b=G722eRD8jWAb3CJJzKki0E0uH1a8sQkU4UrBTT9nwheBdXXZ/Zip0wP4BcLHBs0tqw F/j57OTGVO9vYXlShXw2Q2OSIoXkpTnL3b3gkZBoiCtFuJ8B0uEPjStXR10ewQgCD+T2 fpe9SA36WLUDEbXfHfQDtmwDtOVaEVaz0mWH8Frh1zS51/PBkfTam/jCDBWOZvgVILlO Qz4Fwwjy9RdkVMyXSiZQk4A7bw/IDyBOQKEN3BC+VOZHT2V6uIsTG/GEiHS9p+quzQJP DFowklglHyEf/alNDoyEG2k+iAdyfO78TR9t+X0Vpu2ehcFXztyg21Vh7tfo/JDob1wf 2iUA== X-Gm-Message-State: APjAAAU8UFKSKF0VNmY/fKNuW++Y12Yc9nfGy9VAYVga0BBrb94EkYuf iQIR06EOCQ00twok+U3g6vQYWSYe9NYxzxXD6W88uYlB X-Google-Smtp-Source: APXvYqx8077dqguPqEFI6+OlyN3ofw5NkRSHCv3ii7U127hZoYr0bYgeSV/phYbejddupJV+eJ/33u2deWUNPfAQvk8= X-Received: by 2002:aed:33a4:: with SMTP id v33mr63995596qtd.18.1564135065054; Fri, 26 Jul 2019 02:57:45 -0700 (PDT) MIME-Version: 1.0 References: <20190724144651.28272-1-christian@brauner.io> <20190724144651.28272-3-christian@brauner.io> <20190726082413.n7srvcrqxmvk67z7@brauner.io> In-Reply-To: <20190726082413.n7srvcrqxmvk67z7@brauner.io> From: Arnd Bergmann Date: Fri, 26 Jul 2019 11:57:28 +0200 Message-ID: Subject: Re: [PATCH 2/5] pidfd: add pidfd_wait() To: Christian Brauner Cc: Linux Kernel Mailing List , Oleg Nesterov , "Eric W . Biederman" , Kees Cook , Joel Fernandes , Thomas Gleixner , Tejun Heo , David Howells , Jann Horn , Andy Lutomirski , Andrew Morton , Aleksa Sarai , Linus Torvalds , Al Viro , Android Kernel Team , Linux API 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 Fri, Jul 26, 2019 at 10:24 AM Christian Brauner wrote: > > > It would be nice to introduce it in a separate patch, and then use it > > to kill off > > compat_sys_getrusage() and compat_sys_wait4(), and possibly even > > compat_sys_waitid() in combination with your copy_siginfo_to_user_any(). > > That could be done as a cleanup patch afterwards, or as part of your series. > > Right, but we won't go the syscall route but instead go the P_PIDFD > route for waitid(). :) Ah, of course, nevermind then. It would still be a useful cleanup, but many other things would be as well. Arnd