linux-kernel - Re: [QUICKLIST 1/5] Quicklists for page table pages V4

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Message-ID: <20070323112331.GQ2986@holomorphy.com>
Date:	Fri, 23 Mar 2007 04:23:31 -0700
From:	William Lee Irwin III <wli@...omorphy.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Christoph Lameter <clameter@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [QUICKLIST 1/5] Quicklists for page table pages V4

On Thu, Mar 22, 2007 at 11:48:48PM -0800, Andrew Morton wrote:
> afacit that two-year-old, totally-different patch has nothing to do with my
> repeatedly-asked question.  It appears to be consolidating three separate
> quicklist allocators into one common implementation.
> In an attempt to answer my own question (and hence to justify the retention
> of this custom allocator) I did this:
[... patch changing allocator alloc()/free() to bare page allocations ...]
> but it crashes early in the page allocator (i386) and I don't see why.  It
> makes me wonder if we have a use-after-free which is hidden by the presence
> of the quicklist buffering or something.


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