linux-kernel - Re: Linux 2.6.20-rc7

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Message-ID: <Pine.LNX.4.64.0701311653040.3632@woody.linux-foundation.org>
Date:	Wed, 31 Jan 2007 16:54:57 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Nick Piggin <nickpiggin@...oo.com.au>
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>, Andrew Morton <akpm@...l.org>,
	Adrian Bunk <bunk@...sta.de>
Subject: Re: Linux 2.6.20-rc7



On Thu, 1 Feb 2007, Nick Piggin wrote:
> 
> We could make them both unsigned, and _add_ everything to min rather than
> subtracting from free_pages?

Yeah, that's the right thing to do, probably. However, since we do that 
"min >>=1" thing, we'd have to do that to a separate "correction" factor 
(also unsigned).

No worth it for 2.6.20. I just reverted it. But feel free to send the 
fixed/updated micro-optimization after 2.6.20 has been released..

		Linus
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