linux-kernel - Re: [PATCH] mm: fix huge page reallocated in soft_offline

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Message-ID: <52AECABE.60902@huawei.com>
Date:	Mon, 16 Dec 2013 17:41:18 +0800
From:	Xishi Qiu <qiuxishi@...wei.com>
To:	Xishi Qiu <qiuxishi@...wei.com>
CC:	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	WuJianguo <wujianguo@...wei.com>, Linux MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: fix huge page reallocated in soft_offline_page

On 2013/12/16 17:00, Xishi Qiu wrote:

> The huge page may be reallocated in soft_offline_page, because
> MIGRATE_ISOLATE can not keep the page until after setting PG_hwpoison.
> alloc_huge_page()
> 	dequeue_huge_page_vma()
> 		dequeue_huge_page_node()
> If the huge page was reallocated, we need to try offline it again.
> 

Sorry, I made a mistake.
This bug was fixed in
commit c8721bbbdd36382de51cd6b7a56322e0acca2414

Thanks,
Xishi Qiu

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