linux-kernel - Re: [LSF/MM TOPIC] really large storage sectors

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Message-ID: <20140122052052.GM10565@ZenIV.linux.org.uk>
Date:	Wed, 22 Jan 2014 05:20:53 +0000
From:	Joel Becker <jlbec@...lplan.org>
To:	Ric Wheeler <rwheeler@...hat.com>
Cc:	linux-scsi@...r.kernel.org, linux-ide@...r.kernel.org,
	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
	lsf-pc@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [LSF/MM TOPIC] really large storage sectors - going beyond 4096
 bytes

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.

Joel

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