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Subject: Re: [patch] SLQB slab allocator
From: Pekka Enberg <penberg@cs.helsinki.fi>
To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Hugh Dickins <hugh@veritas.com>, Nick Piggin <npiggin@suse.de>,
       Linux Memory Management List <linux-mm@kvack.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
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       Christoph Lameter <cl@linux-foundation.org>
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Date: Mon, 02 Feb 2009 11:00:14 +0200
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Hi Yanmin,

On Mon, 2009-02-02 at 11:38 +0800, Zhang, Yanmin wrote:
> Can we add a checking about free memory page number/percentage in function
> allocate_slab that we can bypass the first try of alloc_pages when memory
> is hungry?

If the check isn't too expensive, I don't any reason not to. How would
you go about checking how much free pages there are, though? Is there
something in the page allocator that we can use for this?

		Pekka