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Date: Sun, 23 Mar 2008 01:43:26 +0900
From: "KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>
Subject: Re: [for -mm][PATCH][1/2] page reclaim throttle take3
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References: <20080322192928.B30B.KOSAKI.MOTOHIRO@jp.fujitsu.com>
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To: Rik van Riel <riel@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, Andrew Morton <akpm@linux-foundation.org>, linux-mm <linux-mm@kvack.org>, Balbir Singh <balbir@linux.vnet.ibm.com>, David Rientjes <rientjes@google.com>
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>  >   __alloc_pages_internal  (turn on PF_MEMALLOC)
>  >     +- try_to_free_pages
>  >         +- (skip)
>  >             +- pageout
>  >                 +- (skip)
>  >                     +-  __alloc_pages_internal
>  >
>  > in second __alloc_pages_internal, PF_MEMALLOC populated.
>  > thus bypassed try_to_free_pages.
>  >
>  > Am I misunderstanding anything?
>
>  Look at free_more_memory() in fs/buffer.c

Oh, I see.
thanks.

I will add the mechanism of avoid recursive throttleing problem.

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