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[209.132.180.67]) by mx.google.com with ESMTP id k12si17159287pgi.107.2019.04.24.03.21.42; Wed, 24 Apr 2019 03:21:57 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728689AbfDXJGr (ORCPT + 99 others); Wed, 24 Apr 2019 05:06:47 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:51165 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727190AbfDXJGr (ORCPT ); Wed, 24 Apr 2019 05:06:47 -0400 Received: from [192.168.1.115] ([95.114.95.254]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MuDPh-1gWD9r3Otp-00uZbx; Wed, 24 Apr 2019 11:05:30 +0200 Subject: Re: [PATCH RFC 1/2] Add polling support to pidfd To: Christian Brauner , Daniel Colascione Cc: Joel Fernandes , Jann Horn , Oleg Nesterov , Florian Weimer , kernel list , Andy Lutomirski , Steven Rostedt , Suren Baghdasaryan , Linus Torvalds , Alexey Dobriyan , Al Viro , Andrei Vagin , Andrew Morton , Arnd Bergmann , "Eric W. Biederman" , Kees Cook , linux-fsdevel , "open list:KERNEL SELFTEST FRAMEWORK" , Michal Hocko , Nadav Amit , Serge Hallyn , Shuah Khan , Stephen Rothwell , Taehee Yoo , Tejun Heo , Thomas Gleixner , kernel-team , Tycho Andersen References: <20190411175043.31207-1-joel@joelfernandes.org> <20190416192051.GA184889@google.com> <20190417130940.GC32622@redhat.com> <20190419190247.GB251571@google.com> <20190419191858.iwcvqm6fihbkaata@brauner.io> <20190419194902.GE251571@google.com> From: "Enrico Weigelt, metux IT consult" Organization: metux IT consult Message-ID: <92f374d0-7cc0-9cc4-80fe-f7efa39e0435@metux.net> Date: Wed, 24 Apr 2019 11:05:27 +0200 User-Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:euoOHJXX/V5IggltLZ7jte7/XtsCQpJ0F/kvPgX030lkWhdJfrM YPp97HW90zVNl7aP0nSOTYHAL8JqkRr9bMm3VgX+3HzwtiRICIEwRn728ECL57PPsA5TgBj dYaGYxk/CXycJID8ypF57znsT/S7guh70lXwwDECDXnzQr83JD5G791unt6uid5Emvs5QdJ qIG6Ym9xhpF5KEu27Sdug== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:vIbAPu2Bz6E=:QCht0ggwEHRxXBkM72n8Pb ySG7mmMG4RHOm/yYwWNJ5nPGcd1MWDnY2xGsdmH4oAY/QsbDoOA0ae4BQ6xzv4ZEdu8B4LmBO ffRoA4CbyQ4gUTN44NVYoLF/yxDvKqfgDhMHA9yQ1PstiFHGxzuGkHTI71LR0ZDLe3GI58fjK /+kEjKi1IEUd/cL5TqO2xIfPYxhC4R0t1BvDzHO1W2dEoS1NH81+ZMIZPC0aRsavamtBUfatZ yUQFMQxOyl/z8vLOcYPcxG+VYLbNyUzdyo5z4AeCa3izYuBKA1NBHBypz/z5lem2TLeDe3FKb X3meGhpyFh51RbznGhYXfi0amzcABO+kCHDzl4vs0T/bFxVlC9QuYheyidSU2HKfwlZe1uMfU 1d3qbGvysQifh3+i788y9MRj2P7FKEwOwOh1IkGH2CwSPNsIFe8kPgyrxKb14IfsAvLCAZT6W yzJ1huH5tOLmA5ASTkvbeW0nXZuVfKsjlFP9FpCBClBLb57GXXvM8uLEm25bbhEWcNBDAt1SK XZ51uVhahgBi88UwEcRNIbKpqALwRPl/2wkRToqFLt7erbBujvMbRUpHOPyjYGpiWZEXdG6UT 2s/XqM1aErNYEj/MA2c5tUkSjAaSgKEV1I6jEYYcSnbVH6UZAwbQvfs0g4/2r1oGjhlZkAOvw WfE5ypSjkBNn5frKLcBs6kCWg64RHWJuIRmIK7+keepaVIxmvRfyYwoURWTgi9BwyKr4tvt5t /997Tlcv7Ot7B7kUeGX2R64i+CQdfaqrgg2IzUsUNvLAelkOl6Jc/mELFPg= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 20.04.19 02:17, Christian Brauner wrote: > It's not off the table that we can add a pidfd_open() if that becomes> a real thing. What are the exact semantics of pidfd_open() ? --mtx -- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287