linux-kernel - Re: [PATCH] Cleanup migrate case in try_to_unmap

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Date:	Thu, 13 May 2010 17:06:18 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	ngupta@...are.org
Cc:	kosaki.motohiro@...fujitsu.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Rik van Riel <riel@...hat.com>,
	Andi Kleen <andi@...stfloor.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Subject: Re: [PATCH] Cleanup migrate case in try_to_unmap_one

> On 05/13/2010 11:34 AM, KOSAKI Motohiro wrote:
> >> Remove duplicate handling of TTU_MIGRATE case for
> >> anonymous and filesystem pages.
> >>
> >> Signed-off-by: Nitin Gupta <ngupta@...are.org>
> > 
> > This patch change swap cache case. I think this is not intentional.
> 
> IIUC, we never call this function with TTU_MIGRATE for swap cache pages.
> So, the behavior after this patch remains unchanged.

Why?

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