linux-kernel - Re: [GIT PULL] mm: frontswap (for 3.2 window)

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Message-Id: <20111031171321.097a166c.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 31 Oct 2011 17:13:21 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Dan Magenheimer <dan.magenheimer@...cle.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Konrad Wilk <konrad.wilk@...cle.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>, ngupta@...are.org,
	levinsasha928@...il.com, Chris Mason <chris.mason@...cle.com>,
	JBeulich@...ell.com, Dave Hansen <dave@...ux.vnet.ibm.com>,
	Jonathan Corbet <corbet@....net>, Neo Jia <cyclonusj@...il.com>
Subject: Re: [GIT PULL] mm: frontswap (for 3.2 window)

On Thu, 27 Oct 2011 11:52:22 -0700 (PDT)
Dan Magenheimer <dan.magenheimer@...cle.com> wrote:

> Hi Linus --
> 
> Frontswap now has FOUR users: Two already merged in-tree (zcache
> and Xen) and two still in development but in public git trees
> (RAMster and KVM).  Frontswap is part 2 of 2 of the core kernel
> changes required to support transcendent memory; part 1 was cleancache
> which you merged at 3.0 (and which now has FIVE users).
> 
> Frontswap patches have been in linux-next since June 3 (with zero
> changes since Sep 22).  First posted to lkml in June 2009, frontswap 
> is now at version 11 and has incorporated feedback from a wide range
> of kernel developers.  For a good overview, see
>    http://lwn.net/Articles/454795.
> If further rationale is needed, please see the end of this email
> for more info.
> 
> SO... Please pull:
> 
> git://oss.oracle.com/git/djm/tmem.git #tmem
> 
> since git commit b6fd41e29dea9c6753b1843a77e50433e6123bcb
> Linus Torvalds (1):
> 

Why bypass -mm tree ?

I think you planned to merge this via -mm tree and, then, posted patches
to linux-mm with CC -mm guys.

I think you posted 2011/09/16 at the last time, v10. But no further submission
to gather acks/reviews from Mel, Johannes, Andrew, Hugh etc.. and no inclusion
request to -mm or -next. _AND_, IIUC, at v10, the number of posted pathces was 6.
Why now 8 ? Just because it's simple changes ? 

I don't have heavy concerns to the codes itself but this process as bypassing -mm
or linux-next seems ugly.

Thanks,
-Kame

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