linux-kernel - Re: [PATCH] mm: remove inline from scan_swap

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Message-Id: <20110307102754.89EA.A69D9226@jp.fujitsu.com>
Date:	Mon,  7 Mar 2011 10:27:52 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Cesar Eduardo Barros <cesarb@...arb.net>
Cc:	kosaki.motohiro@...fujitsu.com, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Jens Axboe <jaxboe@...ionio.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: remove inline from scan_swap_map

> scan_swap_map is a large function (224 lines), with several loops and a
> complex control flow involving several gotos.
> 
> Given all that, it is a bit silly that is is marked as inline. The
> compiler agrees with me: on a x86-64 compile, it did not inline the
> function.
> 
> Remove the "inline" and let the compiler decide instead.
> 
> Signed-off-by: Cesar Eduardo Barros <cesarb@...arb.net>
> ---
>  mm/swapfile.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/swapfile.c b/mm/swapfile.c
> index 0341c57..8ed42e7 100644
> --- a/mm/swapfile.c
> +++ b/mm/swapfile.c
> @@ -212,8 +212,8 @@ static int wait_for_discard(void *word)
>  #define SWAPFILE_CLUSTER	256
>  #define LATENCY_LIMIT		256
>  
> -static inline unsigned long scan_swap_map(struct swap_info_struct *si,
> -					  unsigned char usage)
> +static unsigned long scan_swap_map(struct swap_info_struct *si,
> +				   unsigned char usage)

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


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