From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
To: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
linux-mm@kvack.org, Kyungmin Park <kyungmin.park@samsung.com>,
Matt Mackall <mpm@selenic.com>
Subject: Re: [PATCH 1/3] proc: add /proc/kpageorder interface
Date: Mon, 04 Jun 2012 15:31:25 -0400 [thread overview]
Message-ID: <4FCD0D0D.9050003@gmail.com> (raw)
In-Reply-To: <201206041023.22937.b.zolnierkie@samsung.com>
(6/4/12 4:23 AM), Bartlomiej Zolnierkiewicz wrote:
> On Friday 01 June 2012 22:31:01 KOSAKI Motohiro wrote:
>> (6/1/12 12:54 PM), Bartlomiej Zolnierkiewicz wrote:
>>> From: Bartlomiej Zolnierkiewicz<b.zolnierkie@samsung.com>
>>> Subject: [PATCH] proc: add /proc/kpageorder interface
>>>
>>> This makes page order information available to the user-space.
>>
>> No usecase new feature always should be NAKed.
>
> It is used to get page orders for Buddy pages and help to monitor
> free/used pages. Sample usage will be posted for inclusion to
> Pagemap Demo tools (http://selenic.com/repo/pagemap/).
>
> The similar situation is with /proc/kpagetype..
NAK then.
First, your explanation didn't describe any usecase. "There is a similar feature"
is NOT a usecase.
Second, /proc/kpagetype is one of mistaken feature. It was not designed deeply.
We have no reason to follow the mistake.
Third, pagemap demo doesn't describe YOUR feature's usefull at all.
Fourth, pagemap demo is NOT useful at all. It's just toy. Practically, kpagetype
is only used from pagetype tool.
Firnally, you have to learn what "usecase" mean.
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next prev parent reply other threads:[~2012-06-04 19:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-01 16:54 Bartlomiej Zolnierkiewicz
2012-06-01 20:31 ` KOSAKI Motohiro
2012-06-04 8:23 ` Bartlomiej Zolnierkiewicz
2012-06-04 19:31 ` KOSAKI Motohiro [this message]
2012-06-06 8:23 ` Bartlomiej Zolnierkiewicz
2012-06-08 2:32 ` KOSAKI Motohiro
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