linux-kernel - Re: [PATCH] mm: kill one if in loop of __free_pages

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Message-ID: <20130723055241.GI715@cmpxchg.org>
Date:	Tue, 23 Jul 2013 01:52:41 -0400
From:	Johannes Weiner <hannes@...xchg.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: kill one if in loop of __free_pages_bootmem

On Mon, Jul 22, 2013 at 07:17:42PM -0700, Yinghai Lu wrote:
> We should not check loop+1 with loop end in loop body.
> Just duplicate two lines code to avoid it.
> 
> That will help a bit when we have huge amount of pages on
> system with 16TiB memory.
> 
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> Cc: Mel Gorman <mgorman@...e.de>

Disassembly looks good, thanks!

Acked-by: Johannes Weiner <hannes@...xchg.org>
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