linux-kernel - Re: What can we do to get ready for memory controller merge in 2.6.25

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Message-ID: <474EE667.6050106@linux.vnet.ibm.com>
Date:	Thu, 29 Nov 2007 21:48:47 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Rik van Riel <riel@...hat.com>
CC:	Linux Memory Management List <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Hugh Dickins <hugh@...itas.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Pavel Emelianov <xemul@...ru>,
	YAMAMOTO Takashi <yamamoto@...inux.co.jp>,
	Christoph Lameter <clameter@....com>,
	"Martin J. Bligh" <mbligh@...gle.com>,
	Andy Whitcroft <andyw@...ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>
Subject: Re: What can we do to get ready for memory controller merge in 2.6.25

Rik van Riel wrote:
> On Thu, 29 Nov 2007 20:13:17 +0530
> Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
> 
>> They say better strike when the iron is hot.
>>
>> Since we have so many people discussing the memory controller, I would
>> like to access the readiness of the memory controller for mainline
>> merge.
> 
>> At the VM-Summit we decided to try the current double LRU approach for
>> memory control. At this juncture in the space-time continuum, I seek
>> your support, feedback, comments and help to move the memory controller
> 
> The memory controller code currently in -mm seems fine to me,
> especially with the changes that got committed over the last
> days making reclaim more efficient.
> 

Yes, I agree. Per zone reclaim and lists have helped make the code
better. Credit goes to KAMEZAWA-San for the per zone code and to
YAMAMOTO-San for background reclaim.

> I don't think there are any bugs left that can be found by
> code inspection - only the kind of testing that the mainline
> kernel gets might shake out more bugs.
> 
> I would like to see the memory controller code go into the
> mainline kernel ASAP.
> 

Excellent, thanks!


-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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