linux-kernel - Re: [PATCH] mm, lockdep: annotate reclaim context to zone reclaim too

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Message-ID: <2f11576a1001020709m106b16fcqa15ee41a1a8e22a@mail.gmail.com>
Date:	Sun, 3 Jan 2010 00:09:32 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] mm, lockdep: annotate reclaim context to zone reclaim too

2010/1/2 Peter Zijlstra <peterz@...radead.org>:
> On Sat, 2010-01-02 at 22:29 +0900, KOSAKI Motohiro wrote:
>
>> When recursive annotation occur?
>
> Dunno, I told you you'd have to make sure it doesn't.

Please see PF_MEMALLOC turning on/off operation points. all
PF_MEMALLOC turing on point prevent recersive already.
(because, otherwise we lost PF_MEMALLOC and makes deadlock...)
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