From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Darrick J. Wong" Subject: Re: [Lsf-pc] [LSF/MM TOPIC] a few storage topics Date: Wed, 18 Jan 2012 14:58:08 -0800 Message-ID: <20120118225808.GA3074@tux1.beaverton.ibm.com> References: <20120117200609.GA7933@redhat.com> <20120117213648.GA9457@quack.suse.cz> Reply-To: djwong@us.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Mike Snitzer , lsf-pc@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, dm-devel@redhat.com, linux-scsi@vger.kernel.org To: Jan Kara Return-path: Received: from e32.co.us.ibm.com ([32.97.110.150]:59869 "EHLO e32.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752085Ab2ARW6m (ORCPT ); Wed, 18 Jan 2012 17:58:42 -0500 Received: from /spool/local by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 18 Jan 2012 15:58:40 -0700 Content-Disposition: inline In-Reply-To: <20120117213648.GA9457@quack.suse.cz> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Tue, Jan 17, 2012 at 10:36:48PM +0100, Jan Kara wrote: > On Tue 17-01-12 15:06:12, Mike Snitzer wrote: > > 5) Any more progress on stable pages? > > - I know Darrick Wong had some proposals, what remains? > As far as I know this is done for XFS, btrfs, ext4. Is more needed? Yep, it's done for those three fses. I suppose it might help some people if instead of wait_on_page_writeback we could simply page-migrate all the processes onto a new page...? Or possibly modify md-raid5 not to snapshot dirty pages prior to xor/write? (I never really bothered to find out if it really does this.) --D > > Honza > -- > Jan Kara > SUSE Labs, CR > -- > To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >