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Date: Thu, 24 Mar 2011 16:41:25 +0900
Message-ID: <AANLkTimPKEODvp3MmYmFrmEYSbAPr1b4dTq6fDHWAEsD@mail.gmail.com>
Subject: Re: [PATCH 1/5] vmscan: remove all_unreclaimable check from direct
 reclaim path completely
From: Minchan Kim <minchan.kim@gmail.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
        David Rientjes <rientjes@google.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Rik van Riel <riel@redhat.com>, Oleg Nesterov <oleg@redhat.com>,
        linux-mm <linux-mm@kvack.org>, Andrey Vagin <avagin@openvz.org>,
        Hugh Dickins <hughd@google.com>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Nick Piggin <npiggin@kernel.dk>, Johannes Weiner <hannes@cmpxchg.org>
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On Thu, Mar 24, 2011 at 4:34 PM, Minchan Kim <minchan.kim@gmail.com> wrote:
> On Thu, Mar 24, 2011 at 4:28 PM, KOSAKI Motohiro
> <kosaki.motohiro@jp.fujitsu.com> wrote:
>>> For example, In 4G desktop system.
>>> 32M full scanning and fail to reclaim a page.
>>> It's under 1% coverage.
>>
>> ?? I'm sorry. I haven't catch it.
>> Where 32M come from?
>
> (1<<12) * 4K + (1<<11) + 4K + .. (1 << 0) + 4K in shrink_zones.

Stupid me.
Sorry. my calculation is totally wrong.

Your explanation was perfect
Okay. I don't have any objection to your solution.


-- 
Kind regards,
Minchan Kim
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