From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ee0-f49.google.com (mail-ee0-f49.google.com [74.125.83.49]) by kanga.kvack.org (Postfix) with ESMTP id 03A766B0037 for ; Wed, 22 Jan 2014 02:14:49 -0500 (EST) Received: by mail-ee0-f49.google.com with SMTP id d17so4616738eek.8 for ; Tue, 21 Jan 2014 23:14:49 -0800 (PST) Received: from mx2.suse.de (cantor2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id v2si15266346eef.47.2014.01.21.23.14.48 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 21 Jan 2014 23:14:48 -0800 (PST) Message-ID: <52DF6FE7.2080901@suse.de> Date: Wed, 22 Jan 2014 08:14:47 +0100 From: Hannes Reinecke MIME-Version: 1.0 Subject: Re: [LSF/MM TOPIC] really large storage sectors - going beyond 4096 bytes References: <20131220093022.GV11295@suse.de> <52DF353D.6050300@redhat.com> <20140122052052.GM10565@ZenIV.linux.org.uk> In-Reply-To: <20140122052052.GM10565@ZenIV.linux.org.uk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: Ric Wheeler , linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, lsf-pc@lists.linux-foundation.org, linux-kernel@vger.kernel.org On 01/22/2014 06:20 AM, Joel Becker wrote: > On Tue, Jan 21, 2014 at 10:04:29PM -0500, Ric Wheeler wrote: >> One topic that has been lurking forever at the edges is the current >> 4k limitation for file system block sizes. Some devices in >> production today and others coming soon have larger sectors and it >> would be interesting to see if it is time to poke at this topic >> again. >> >> LSF/MM seems to be pretty much the only event of the year that most >> of the key people will be present, so should be a great topic for a >> joint session. > > Oh yes, I want in on this. We handle 4k/16k/64k pages "seamlessly," and > we would want to do the same for larger sectors. In theory, our code > should handle it with the appropriate defines updated. > +1 The shingled drive folks would really love us for this. Plus it would make live really easy for those type of devices. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nurnberg GF: J. Hawn, J. Guild, F. Imendorffer, HRB 16746 (AG Nurnberg) -- 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