linux-kernel - Re: [PATCH v2 3/7] mm/mempolicy: correct putback method for isolate pages if failed

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Message-ID: <20131209164108.GA14363@localhost.localdomain>
Date:	Mon, 9 Dec 2013 14:41:09 -0200
From:	Rafael Aquini <aquini@...hat.com>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Christoph Lameter <cl@...ux.com>,
	Joonsoo Kim <js1304@...il.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Vlastimil Babka <vbabka@...e.cz>,
	Zhang Yanfei <zhangyanfei@...fujitsu.com>
Subject: Re: [PATCH v2 3/7] mm/mempolicy: correct putback method for isolate
 pages if failed

On Mon, Dec 09, 2013 at 06:10:44PM +0900, Joonsoo Kim wrote:
> queue_pages_range() isolates hugetlbfs pages and putback_lru_pages() can't
> handle these. We should change it to putback_movable_pages().
> 
> Naoya said that it is worth going into stable, because it can break
> in-use hugepage list.
> 
> Cc: <stable@...r.kernel.org> # 3.12
> Reviewed-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
> 
> diff --git a/mm/mempolicy.c b/mm/mempolicy.c
> index eca4a31..6d04d37 100644
> --- a/mm/mempolicy.c
> +++ b/mm/mempolicy.c
> @@ -1318,7 +1318,7 @@ static long do_mbind(unsigned long start, unsigned long len,
>  		if (nr_failed && (flags & MPOL_MF_STRICT))
>  			err = -EIO;
>  	} else
> -		putback_lru_pages(&pagelist);
> +		putback_movable_pages(&pagelist);
>  
>  	up_write(&mm->mmap_sem);
>   mpol_out:

Acked-by: Rafael Aquini <aquini@...hat.com>


> -- 
> 1.7.9.5
> 
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