From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f70.google.com (mail-pa0-f70.google.com [209.85.220.70]) by kanga.kvack.org (Postfix) with ESMTP id 29E526B0270 for ; Thu, 27 Oct 2016 08:32:45 -0400 (EDT) Received: by mail-pa0-f70.google.com with SMTP id xx10so20053441pac.2 for ; Thu, 27 Oct 2016 05:32:45 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id h4si7729903pfk.227.2016.10.27.05.32.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 27 Oct 2016 05:32:44 -0700 (PDT) Date: Thu, 27 Oct 2016 05:32:19 -0700 From: Christoph Hellwig Subject: Re: [PATCH 0/3] iopmem : A block device for PCIe memory Message-ID: <20161027123219.GA757@infradead.org> References: <1476826937-20665-1-git-send-email-sbates@raithlin.com> <20161019184814.GC16550@cgy1-donard.priv.deltatee.com> <20161020232239.GQ23194@dastard> <20161021095714.GA12209@infradead.org> <76e957c9-8002-5a46-8111-269bb0401718@grimberg.me> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <76e957c9-8002-5a46-8111-269bb0401718@grimberg.me> Sender: owner-linux-mm@kvack.org List-ID: To: Sagi Grimberg Cc: Christoph Hellwig , Dave Chinner , jgunthorpe@obsidianresearch.com, sbates@raithin.com, "Raj, Ashok" , haggaie@mellanox.com, linux-rdma@vger.kernel.org, "linux-nvdimm@lists.01.org" , Jonathan Corbet , "linux-kernel@vger.kernel.org" , jim.macdonald@everspin.com, Stephen Bates , linux-block@vger.kernel.org, Linux MM , Jens Axboe , David Woodhouse On Thu, Oct 27, 2016 at 01:22:49PM +0300, Sagi Grimberg wrote: > Christoph, did you manage to leap to the future and solve the > RDMA persistency hole? :) > > e.g. what happens with O_DSYNC in this model? Or you did > a message exchange for commits? Yes, pNFS calls this the layoutcommit. That being said once we get a RDMA commit or flush operation we could easily make the layoutcommit optional for some operations. There already is a precedence for the in the flexfiles layout specification. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org