linux-kernel - Re: [PATCH 2/4] mm/mempolicy: correct putback method for isolate pages if failed

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1386355437-ly5a1ny8-mutt-n-horiguchi@ah.jp.nec.com>
Date:	Fri, 06 Dec 2013 13:43:57 -0500
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.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>,
	Rafael Aquini <aquini@...hat.com>,
	Christoph Lameter <cl@...ux.com>,
	Joonsoo Kim <js1304@...il.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 2/4] mm/mempolicy: correct putback method for isolate
 pages if failed

Hi Joonsoo,

On Fri, Dec 06, 2013 at 05:41:48PM +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().
> 
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>

Nice fix, thanks.
I think that this patch is worth going into -stable 3.12,
because it can break in-use hugepage list.

Reviewed-by: Naoya Horiguchi <n-horiguchi@...jp.nec.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:
> -- 
> 1.7.9.5
> 
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
> the body to majordomo@...ck.org.  For more info on Linux MM,
> see: http://www.linux-mm.org/ .
> Don't email: <a href=mailto:"dont@...ck.org"> email@...ck.org </a>
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/