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Date:	Sat, 7 Nov 2009 13:19:33 +0900
From:	Minchan Kim <>
To:	Christoph Lameter <>
	Tejun Heo <>, Ingo Molnar <>,
	KAMEZAWA Hiroyuki <>,
	"" <>
Subject: Re: Subject: [RFC MM] mmap_sem scaling: Use mutex and percpu counter 

On Sat, Nov 7, 2009 at 2:10 AM, Christoph Lameter
<> wrote:
> On Sat, 7 Nov 2009, Minchan Kim wrote:
>> How about change from 'mm_readers' to 'is_readers' to improve your
>> goal 'scalibility'?
> Good idea. Thanks. Next rev will use your suggestion.
> Any creative thoughts on what to do about the 1 millisecond wait period?

it would be importatn to prevent livelock for reader to hold lock
continuously before
hodling writer than 1 msec write ovhead.
First of all, After we solve it, second step is that optimize write
overhead, I think.

Kind regards,
Minchan Kim
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