linux-kernel - Re: [PATCH] mm: complement page reclaim comment

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Date:	Thu, 14 Jun 2012 09:44:12 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Wanpeng Li <liwp.linux@...il.com>
CC:	linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>,
	Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org,
	trivial@...nel.org, Gavin Shan <shangw@...ux.vnet.ibm.com>,
	kosaki.motohiro@...il.com
Subject: Re: [PATCH] mm: complement page reclaim comment

(6/14/12 9:22 AM), Wanpeng Li wrote:
> From: Wanpeng Li<liwp@...ux.vnet.ibm.com>
> 
> Signed-off-by: Wanpeng Li<liwp.linux@...il.com>
> ---
>   mm/vmscan.c |    1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index ed823df..603c96f 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -3203,6 +3203,7 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
>    * Reasons page might not be evictable:
>    * (1) page's mapping marked unevictable
>    * (2) page is part of an mlocked VMA
> + * (3) page mapped into SHM_LOCK'd shared memory regions

This is one of "marked unevictable".


>    *
>    */
>   int page_evictable(struct page *page, struct vm_area_struct *vma)

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