From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Mon, 19 Dec 2016 14:11:49 -0700 From: Ross Zwisler Subject: Re: DAX mapping detection (was: Re: [PATCH] Fix region lost in /proc/self/smaps) Message-ID: <20161219211149.GA12822@linux.intel.com> References: <20160912213435.GD30497@dastard> <20160913115311.509101b0@roar.ozlabs.ibm.com> <20160914073902.GQ22388@dastard> <20160914201936.08315277@roar.ozlabs.ibm.com> <20160915023133.GR22388@dastard> <20160915134945.0aaa4f5a@roar.ozlabs.ibm.com> <20160915103210.GT22388@dastard> <20160915214222.505f4888@roar.ozlabs.ibm.com> <20160915223350.GU22388@dastard> <20160916155405.6b634bbc@roar.ozlabs.ibm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20160916155405.6b634bbc@roar.ozlabs.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Nicholas Piggin , Dave Chinner , Jan Kara , Jeff Moyer , "Darrick J. Wong" Cc: Yumei Huang , Michal Hocko , Xiaof Guangrong , KVM list , Linux MM , Gleb Natapov , "linux-nvdimm@lists.01.org" , mtosatti@redhat.com, "linux-kernel@vger.kernel.org" , Christoph Hellwig , Dave Hansen , Stefan Hajnoczi , linux-fsdevel , Paolo Bonzini , Andrew Morton List-ID: On Fri, Sep 16, 2016 at 03:54:05PM +1000, Nicholas Piggin wrote: <> > Definitely the first step would be your simple preallocated per > inode approach until it is shown to be insufficient. Reviving this thread a few months later... Dave, we're interested in taking a serious look at what it would take to get PMEM_IMMUTABLE working. Do you still hold the opinion that this is (or could become, with some amount of work) a workable solution? We're happy to do the grunt work for this feature, but we will probably need guidance from someone with more XFS experience. With you out on extended leave the first half of 2017, who would be the best person to ask for this guidance? Darrick? Thanks, - Ross _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ross Zwisler Subject: Re: DAX mapping detection (was: Re: [PATCH] Fix region lost in /proc/self/smaps) Date: Mon, 19 Dec 2016 14:11:49 -0700 Message-ID: <20161219211149.GA12822@linux.intel.com> References: <20160912213435.GD30497@dastard> <20160913115311.509101b0@roar.ozlabs.ibm.com> <20160914073902.GQ22388@dastard> <20160914201936.08315277@roar.ozlabs.ibm.com> <20160915023133.GR22388@dastard> <20160915134945.0aaa4f5a@roar.ozlabs.ibm.com> <20160915103210.GT22388@dastard> <20160915214222.505f4888@roar.ozlabs.ibm.com> <20160915223350.GU22388@dastard> <20160916155405.6b634bbc@roar.ozlabs.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Yumei Huang , Michal Hocko , Xiaof Guangrong , KVM list , Linux MM , Gleb Natapov , "linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org" , mtosatti-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Dave Chinner , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Christoph Hellwig , Dave Hansen , Stefan Hajnoczi , linux-fsdevel , Paolo Bonzini , Andrew Morton To: Nicholas Piggin , Dave Chinner , Jan Kara , Jeff Moyer , "Darrick J. Wong" Return-path: Content-Disposition: inline In-Reply-To: <20160916155405.6b634bbc-a5aMA/AkCkgK5Ils6ZIQy0EOCMrvLtNR@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org Sender: "Linux-nvdimm" List-Id: kvm.vger.kernel.org On Fri, Sep 16, 2016 at 03:54:05PM +1000, Nicholas Piggin wrote: <> > Definitely the first step would be your simple preallocated per > inode approach until it is shown to be insufficient. Reviving this thread a few months later... Dave, we're interested in taking a serious look at what it would take to get PMEM_IMMUTABLE working. Do you still hold the opinion that this is (or could become, with some amount of work) a workable solution? We're happy to do the grunt work for this feature, but we will probably need guidance from someone with more XFS experience. With you out on extended leave the first half of 2017, who would be the best person to ask for this guidance? Darrick? Thanks, - Ross From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Mon, 19 Dec 2016 14:11:49 -0700 From: Ross Zwisler To: Nicholas Piggin , Dave Chinner , Jan Kara , Jeff Moyer , "Darrick J. Wong" Cc: Dave Chinner , Yumei Huang , Michal Hocko , Xiaof Guangrong , KVM list , Dave Hansen , Gleb Natapov , "linux-nvdimm@lists.01.org" , mtosatti@redhat.com, "linux-kernel@vger.kernel.org" , Christoph Hellwig , Linux MM , Stefan Hajnoczi , linux-fsdevel , Paolo Bonzini , Andrew Morton Subject: Re: DAX mapping detection (was: Re: [PATCH] Fix region lost in /proc/self/smaps) Message-ID: <20161219211149.GA12822@linux.intel.com> References: <20160912213435.GD30497@dastard> <20160913115311.509101b0@roar.ozlabs.ibm.com> <20160914073902.GQ22388@dastard> <20160914201936.08315277@roar.ozlabs.ibm.com> <20160915023133.GR22388@dastard> <20160915134945.0aaa4f5a@roar.ozlabs.ibm.com> <20160915103210.GT22388@dastard> <20160915214222.505f4888@roar.ozlabs.ibm.com> <20160915223350.GU22388@dastard> <20160916155405.6b634bbc@roar.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160916155405.6b634bbc@roar.ozlabs.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: On Fri, Sep 16, 2016 at 03:54:05PM +1000, Nicholas Piggin wrote: <> > Definitely the first step would be your simple preallocated per > inode approach until it is shown to be insufficient. Reviving this thread a few months later... Dave, we're interested in taking a serious look at what it would take to get PMEM_IMMUTABLE working. Do you still hold the opinion that this is (or could become, with some amount of work) a workable solution? We're happy to do the grunt work for this feature, but we will probably need guidance from someone with more XFS experience. With you out on extended leave the first half of 2017, who would be the best person to ask for this guidance? Darrick? Thanks, - Ross -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f71.google.com (mail-it0-f71.google.com [209.85.214.71]) by kanga.kvack.org (Postfix) with ESMTP id BB8AF6B02BD for ; Mon, 19 Dec 2016 16:12:01 -0500 (EST) Received: by mail-it0-f71.google.com with SMTP id 75so94348245ite.7 for ; Mon, 19 Dec 2016 13:12:01 -0800 (PST) Received: from mga14.intel.com (mga14.intel.com. [192.55.52.115]) by mx.google.com with ESMTPS id n80si14318673ioe.16.2016.12.19.13.12.00 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 19 Dec 2016 13:12:00 -0800 (PST) Date: Mon, 19 Dec 2016 14:11:49 -0700 From: Ross Zwisler Subject: Re: DAX mapping detection (was: Re: [PATCH] Fix region lost in /proc/self/smaps) Message-ID: <20161219211149.GA12822@linux.intel.com> References: <20160912213435.GD30497@dastard> <20160913115311.509101b0@roar.ozlabs.ibm.com> <20160914073902.GQ22388@dastard> <20160914201936.08315277@roar.ozlabs.ibm.com> <20160915023133.GR22388@dastard> <20160915134945.0aaa4f5a@roar.ozlabs.ibm.com> <20160915103210.GT22388@dastard> <20160915214222.505f4888@roar.ozlabs.ibm.com> <20160915223350.GU22388@dastard> <20160916155405.6b634bbc@roar.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160916155405.6b634bbc@roar.ozlabs.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Nicholas Piggin , Dave Chinner , Jan Kara , Jeff Moyer , "Darrick J. Wong" Cc: Yumei Huang , Michal Hocko , Xiaof Guangrong , KVM list , Dave Hansen , Gleb Natapov , "linux-nvdimm@lists.01.org" , mtosatti@redhat.com, "linux-kernel@vger.kernel.org" , Christoph Hellwig , Linux MM , Stefan Hajnoczi , linux-fsdevel , Paolo Bonzini , Andrew Morton On Fri, Sep 16, 2016 at 03:54:05PM +1000, Nicholas Piggin wrote: <> > Definitely the first step would be your simple preallocated per > inode approach until it is shown to be insufficient. Reviving this thread a few months later... Dave, we're interested in taking a serious look at what it would take to get PMEM_IMMUTABLE working. Do you still hold the opinion that this is (or could become, with some amount of work) a workable solution? We're happy to do the grunt work for this feature, but we will probably need guidance from someone with more XFS experience. With you out on extended leave the first half of 2017, who would be the best person to ask for this guidance? Darrick? Thanks, - Ross -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755839AbcLSVLy (ORCPT ); Mon, 19 Dec 2016 16:11:54 -0500 Received: from mga09.intel.com ([134.134.136.24]:56230 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754679AbcLSVLw (ORCPT ); Mon, 19 Dec 2016 16:11:52 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,375,1477983600"; d="scan'208";a="44345367" Date: Mon, 19 Dec 2016 14:11:49 -0700 From: Ross Zwisler To: Nicholas Piggin , Dave Chinner , Jan Kara , Jeff Moyer , "Darrick J. Wong" Cc: Dave Chinner , Yumei Huang , Michal Hocko , Xiaof Guangrong , KVM list , Dave Hansen , Gleb Natapov , "linux-nvdimm@lists.01.org" , mtosatti@redhat.com, "linux-kernel@vger.kernel.org" , Christoph Hellwig , Linux MM , Stefan Hajnoczi , linux-fsdevel , Paolo Bonzini , Andrew Morton Subject: Re: DAX mapping detection (was: Re: [PATCH] Fix region lost in /proc/self/smaps) Message-ID: <20161219211149.GA12822@linux.intel.com> Mail-Followup-To: Ross Zwisler , Nicholas Piggin , Dave Chinner , Jan Kara , Jeff Moyer , "Darrick J. Wong" , Yumei Huang , Michal Hocko , Xiaof Guangrong , KVM list , Dave Hansen , Gleb Natapov , "linux-nvdimm@lists.01.org" , mtosatti@redhat.com, "linux-kernel@vger.kernel.org" , Christoph Hellwig , Linux MM , Stefan Hajnoczi , linux-fsdevel , Paolo Bonzini , Andrew Morton References: <20160912213435.GD30497@dastard> <20160913115311.509101b0@roar.ozlabs.ibm.com> <20160914073902.GQ22388@dastard> <20160914201936.08315277@roar.ozlabs.ibm.com> <20160915023133.GR22388@dastard> <20160915134945.0aaa4f5a@roar.ozlabs.ibm.com> <20160915103210.GT22388@dastard> <20160915214222.505f4888@roar.ozlabs.ibm.com> <20160915223350.GU22388@dastard> <20160916155405.6b634bbc@roar.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160916155405.6b634bbc@roar.ozlabs.ibm.com> User-Agent: Mutt/1.7.1 (2016-10-04) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 16, 2016 at 03:54:05PM +1000, Nicholas Piggin wrote: <> > Definitely the first step would be your simple preallocated per > inode approach until it is shown to be insufficient. Reviving this thread a few months later... Dave, we're interested in taking a serious look at what it would take to get PMEM_IMMUTABLE working. Do you still hold the opinion that this is (or could become, with some amount of work) a workable solution? We're happy to do the grunt work for this feature, but we will probably need guidance from someone with more XFS experience. With you out on extended leave the first half of 2017, who would be the best person to ask for this guidance? Darrick? Thanks, - Ross