From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 18 Jan 2017 12:00:57 +0100 From: Jan Kara To: "Aneesh Kumar K.V" Cc: Jerome Glisse , lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [Lsf-pc] [LSF/MM ATTEND] Un-addressable device memory and block/fs implications Message-ID: <20170118110057.GA31377@quack2.suse.cz> References: <20161213181511.GB2305@redhat.com> <87lgvgwoos.fsf@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87lgvgwoos.fsf@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: On Fri 16-12-16 08:44:11, Aneesh Kumar K.V wrote: > Jerome Glisse writes: > > > I would like to discuss un-addressable device memory in the context of > > filesystem and block device. Specificaly how to handle write-back, read, > > ... when a filesystem page is migrated to device memory that CPU can not > > access. > > > > I intend to post a patchset leveraging the same idea as the existing > > block bounce helper (block/bounce.c) to handle this. I believe this is > > worth discussing during summit see how people feels about such plan and > > if they have better ideas. > > > > > > I also like to join discussions on: > > - Peer-to-Peer DMAs between PCIe devices > > - CDM coherent device memory > > - PMEM > > - overall mm discussions > > I would like to attend this discussion. I can talk about coherent device > memory and how having HMM handle that will make it easy to have one > interface for device driver. For Coherent device case we definitely need > page cache migration support. Aneesh, did you intend this as your request to attend? You posted it as a reply to another email so it is not really clear. Note that each attend request should be a separate email so that it does not get lost... Honza -- Jan Kara SUSE Labs, CR -- 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