linux-kernel - Re: [PATCH] Add nid sanity on alloc_pages

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Message-Id: <20070713014907.5e51a224.akpm@linux-foundation.org>
Date:	Fri, 13 Jul 2007 01:49:07 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Paul Jackson <pj@....com>
Cc:	joe.jin@...cle.com, bill.irwin@...cle.com,
	linux-kernel@...r.kernel.org, gurudas.pai@...cle.com,
	zwane@....linux.org.uk
Subject: Re: [PATCH] Add nid sanity on alloc_pages_node

On Fri, 13 Jul 2007 01:43:49 -0700 Paul Jackson <pj@....com> wrote:

> > Sigh.  What crap.  I guess we leave it as-is.
> 
> That matches my conclusion.
> 
> The thought of exposing a bug in some user of this find bit code by
> tightening up the API to return == N, not >= N, scares poor little old
> me.  I can imagine a nasty bug coming from this
> 
> If someone bold enough and strong enough to slay such dragons came
> along, I'd gladly cheer them along.  But such people are a rare breed,
> and probably have bigger dragons to slay first.
> 

We could do this: add a little bitops torture-test and run that
unconditionally, nice and early.

Something for the young and keen amongst us...
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