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References: <1297338408-3590-1-git-send-email-namhyung@gmail.com>
Date: Thu, 10 Feb 2011 22:10:38 +0900
Message-ID: <AANLkTikEigbPsNMqqkmixYbCfD7Dz12YMcW2+GZbhUQq@mail.gmail.com>
Subject: Re: [RFC PATCH] mm: handle simple case in free_pcppages_bulk()
From: Minchan Kim <minchan.kim@gmail.com>
To: Namhyung Kim <namhyung@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mel@csn.ul.ie>,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org
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Hello Namhyung,

On Thu, Feb 10, 2011 at 8:46 PM, Namhyung Kim <namhyung@gmail.com> wrote:
> Now I'm seeing that there are some cases to free all pages in a
> pcp lists. In that case, just frees all pages in the lists instead
> of being bothered with round-robin lists traversal.

I though about that but I didn't send the patch.
That's because many cases which calls free_pcppages_bulk(,
pcp->count,..) are slow path so it adds comparison overhead on fast
path while it loses the effectiveness in slow path.

-- 
Kind regards,
Minchan Kim
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