linux-kernel - Re: [PATCH 18/22] Use allocation flags as an index to the zone watermark

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Message-Id: <20090424154013.1083.A69D9226@jp.fujitsu.com>
Date:	Fri, 24 Apr 2009 15:41:19 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Mel Gorman <mel@....ul.ie>
Cc:	kosaki.motohiro@...fujitsu.com,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Linux Memory Management List <linux-mm@...ck.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lin Ming <ming.m.lin@...el.com>,
	Zhang Yanmin <yanmin_zhang@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 18/22] Use allocation flags as an index to the zone watermark

> Considering that they are the same type for elements and arrays, I
> didn't think padding would ever be a problem.
> 
> > However, all gcc version don't do that. I think. but perhaps I missed
> > some minor gcc release..
> > 
> > So, I also like Dave's idea. but it only personal feeling.
> > 
> 
> The tide is against me on this one :).
> 
> How about I roll a patch on top of this set that replaces the union by
> calling all sites? I figure that patch will go through a few revisions before
> people are happy with the final API. However, as the patch wouldn't change
> functionality, I'd like to see this series getting wider testing if possible. The
> replace-union-with-single-array patch can be easily folded in then when
> it settles.
> 
> Sound like a plan?

Yeah, I agree testing is important than ugliness discussion :)



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