linux-kernel - Re: [PATCH 13/25] Inline __rmqueue

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Message-Id: <20090421185025.F156.A69D9226@jp.fujitsu.com>
Date:	Tue, 21 Apr 2009 18:52:28 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Mel Gorman <mel@....ul.ie>
Cc:	kosaki.motohiro@...fujitsu.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 13/25] Inline __rmqueue_smallest()

> Inline __rmqueue_smallest by altering flow very slightly so that there
> is only one call site. This allows the function to be inlined without
> additional text bloat.
> 
> Signed-off-by: Mel Gorman <mel@....ul.ie>
> Reviewed-by: Christoph Lameter <cl@...ux-foundation.org>
> ---
>  mm/page_alloc.c |   23 ++++++++++++++++++-----
>  1 files changed, 18 insertions(+), 5 deletions(-)
> 
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index b13fc29..91a2cdb 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -665,7 +665,8 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
>   * Go through the free lists for the given migratetype and remove
>   * the smallest available page from the freelists
>   */
> -static struct page *__rmqueue_smallest(struct zone *zone, unsigned int order,
> +static inline
> +struct page *__rmqueue_smallest(struct zone *zone, unsigned int order,
>  						int migratetype)

"only one caller" is one of keypoint of this patch, I think.
so, commenting is better? but it isn't blocking reason at all.

	Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>



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