linux-kernel - Re: Linux 2.6.20-rc7

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Message-ID: <Pine.LNX.4.64.0701311635050.3632@woody.linux-foundation.org>
Date:	Wed, 31 Jan 2007 16:39:52 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andrew Morton <akpm@...l.org>
cc:	PaweÅ Sikora <pluto@...k.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@....de>,
	Pekka Enberg <penberg@...helsinki.fi>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	Martin Peschke <mp3@...ibm.com>, Adrian Bunk <bunk@...sta.de>,
	Nick Piggin <nickpiggin@...oo.com.au>
Subject: Re: Linux 2.6.20-rc7



On Wed, 31 Jan 2007, Andrew Morton wrote:
> 
> It would be cleaner to check for negativity, but note that we keep
> subtracting stuff from free_pages in the later loop, so we'd need to check
> there as well.

Yeah, not worth it. I'll just revert it.

If we really want to do the micro-optimization that Nick was after, we can 
just do

	// 'min' is always positive
	min = (unsigned long) min >> 1;

or something.

		Linus
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