On Mon, Jan 21 2013 at 12:26am -0500,
Amit Kale [off-list ref] wrote:

quoted

-----Original Message-----
From: Mike Snitzer [mailto:snitzer@redhat.com]
Sent: Saturday, January 19, 2013 3:08 AM
To: Darrick J. Wong
Cc: device-mapper development; Amit Kale; linux-bcache@vger.kernel.org;
kent.overstreet@gmail.com; LKML; lsf-pc@lists.linux-foundation.org; Joe
Thornber
Subject: Re: [LSF/MM TOPIC] Re: [dm-devel] Announcement: STEC EnhanceIO
SSD caching software for Linux kernel

On Fri, Jan 18 2013 at  4:25pm -0500,
Darrick J. Wong [off-list ref] wrote:

quoted

Since Joe is putting together a testing tree to compare the three
caching things, what do you all think of having a(nother) session
about ssd caching at this year's LSFMM Summit?

[Apologies for hijacking the thread.]
[Adding lsf-pc to the cc list.]

Hopefully we'll have some findings on the comparisons well before LSF
(since we currently have some momentum).  But yes it may be worthwhile
to discuss things further and/or report findings.

We should have performance comparisons presented well before the
summit. It'll be good to have ssd caching session in any case. The
likelihood that one of them will be included in Linux kernel before
April is very low.

dm-cache is under active review for upstream inclusion.  I wouldn't
categorize the chances of dm-cache going upstream when the v3.9 merge
window opens as "very low".  But even if dm-cache does go upstream it
doesn't preclude bcache and/or enhanceio from going upstream too.