linux-kernel - Re: [PATCH 02/10] mm: system wide ALLOC_NO

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Message-ID: <Pine.LNX.4.64.0708131603590.18204@schroedinger.engr.sgi.com>
Date:	Mon, 13 Aug 2007 16:04:22 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Daniel Phillips <phillips@...nq.net>
cc:	Daniel Phillips <daniel.raymond.phillips@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Phillips <phillips@...gle.com>
Subject: Re: [PATCH 02/10] mm: system wide ALLOC_NO_WATERMARK

On Sun, 12 Aug 2007, Daniel Phillips wrote:

> > Because we get to the code of interest when we have no memory on the
> > buddy free lists...
> 
> Ah wait, that statement is incorrect and may well be the crux of your 
> misunderstanding.  Buddy free lists are not exhausted until the entire 
> memalloc reserve has been depleted, which would indicate a kernel bug 
> and imminent system death.

I added the call to reclaim where the memory is out.

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