Received: by 10.223.185.116 with SMTP id b49csp97690wrg; Tue, 20 Feb 2018 16:45:08 -0800 (PST) X-Google-Smtp-Source: AH8x225MCHLn939EhAVq6nabxw9lhbT5bhd2Ia6IFFQ+3pQcwX9kqte//wJOay1fXdPvbWmFLr+J X-Received: by 10.99.183.68 with SMTP id w4mr1178097pgt.221.1519173908181; Tue, 20 Feb 2018 16:45:08 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1519173908; cv=none; d=google.com; s=arc-20160816; b=H7AX+9DIXFZxGaFdaf9ewDYCDUampiVBYC9Uc/mPT2Ub2H9MqJiBHTzXQD6GRY2agO 2t9H+pulwPBxBkDoIuzpUpgtnlicRBrRy2awVhXFIISq+nnN6c8Jq9n1LhZrjLdijMYu vRhKJAHd2Q9LLSch34yRLy+u2l61BODo5n8l5wPGXpzWGW65lOXfAJagSXv8+tqvBd/d vlS5PXjjP0TOdO33Y0VItRZy72C5VdVSo7jeQpHSeiGefE6Dg7GmajcYwcQ4AEFJrGNa GtemyR/Jb62NkX2kNZ4zU4Q1vtSg/zd80XfvpoEbKV0Z2XahubTsFxAfwBta4xm3CG53 SCQg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :arc-authentication-results; bh=Yfk9kt0QeSGUOmtHgD3BxTW0bdjF6dAFMc7DMf9Nhas=; b=bg+1ADaFRTGAIp8HfvzJ02t29NJlSKcncHEBZJcdzT1NMqnksReuX/RmL7UvTttbwV FXrgLttCaJ+egEKeeuenUMHDViyQkK1FRG5/Sxrk7yEpKlD1fcKuVnVLED6O7hwl7ucx uctSh05/yaESHJKeNdedJzkVw1ivl14vZcFT+xFv8uJ8cpBCyMO/AUmkSQmnEAQhgcRu k66Qb3uY9adT21jMxH5p5VZp8vqYr/aBo5i8XUNz8FM4k4wUykRGdS8Psz5rr62bnYPl A9Pe0io+62bFS5KaH7ircgpoFyIOC/ivZkF2NzLeyOxp3ztLO4zl0OzJSd1x/5Um3BHE zAVQ== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id b10si227307pge.563.2018.02.20.16.44.53; Tue, 20 Feb 2018 16:45:08 -0800 (PST) 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 S1751168AbeBUAoK (ORCPT + 99 others); Tue, 20 Feb 2018 19:44:10 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:41540 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735AbeBUAoJ (ORCPT ); Tue, 20 Feb 2018 19:44:09 -0500 Received: from akpm3.svl.corp.google.com (unknown [104.133.9.71]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id E25E71131; Wed, 21 Feb 2018 00:44:07 +0000 (UTC) Date: Tue, 20 Feb 2018 16:44:06 -0800 From: Andrew Morton To: Mike Rapoport Cc: Alexander Viro , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, criu@openvz.org, gdb@sourceware.org, devel@lists.open-mpi.org, rr-dev@mozilla.org, Arnd Bergmann , Pavel Emelyanov , Michael Kerrisk , Thomas Gleixner , Josh Triplett , Jann Horn , Greg KH , Andrei Vagin Subject: Re: [PATCH v5 0/4] vm: add a syscall to map a process memory into a pipe Message-Id: <20180220164406.3ec34509376f16841dc66e34@linux-foundation.org> In-Reply-To: <1515479453-14672-1-git-send-email-rppt@linux.vnet.ibm.com> References: <1515479453-14672-1-git-send-email-rppt@linux.vnet.ibm.com> X-Mailer: Sylpheed 3.6.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 9 Jan 2018 08:30:49 +0200 Mike Rapoport wrote: > This patches introduces new process_vmsplice system call that combines > functionality of process_vm_read and vmsplice. All seems fairly strightforward. The big question is: do we know that people will actually use this, and get sufficient value from it to justify its addition?