linux-kernel - Re: [RFC 7/7] Switch of PF

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Message-ID: <20070821011313.GA23935@one.firstfloor.org>
Date:	Tue, 21 Aug 2007 03:13:13 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Christoph Lameter <clameter@....com>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC 7/7] Switch of PF_MEMALLOC during writeout

> Right. I am not sure exactly how to handle that. There is also the issue 
> of the writes being deferred. I thought maybe of using pdflush to writeout 
> the pages? Maybe increase priority of the pdflush so that it runs 
> immediately when notified. Shrink_page_list would gather the dirty pages 
> in pvecs and then forward to a pdflush. That may make the whole thing much 
> cleaner.

Not sure anything complicated is needed.

You could just add another process flag and set PF_MEMALLOC on the first
recursion?

-Andi
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