linux-kernel - Re: [PATCH 3/2][BUGFIX] fix memory isolation notifier return value check

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Message-ID: <AANLkTi=vr+eb1GPCc6b20wAn00TDS-Tf8Zu7Y7z7p7i2@mail.gmail.com>
Date:	Sat, 4 Sep 2010 07:05:48 +0900
From:	Hiroyuki Kamezawa <kamezawa.hiroyuki@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	Wu Fengguang <fengguang.wu@...el.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"Kleen, Andi" <andi.kleen@...el.com>,
	Haicheng Li <haicheng.li@...ux.intel.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mel Gorman <mel@...ux.vnet.ibm.com>
Subject: Re: [PATCH 3/2][BUGFIX] fix memory isolation notifier return value check

2010/9/4 Andrew Morton <akpm@...ux-foundation.org>:
> On Fri, 3 Sep 2010 16:57:13 +0900
> KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:
>
>> Sorry, the 3rd patch for this set.
>
> What happened with "[PATCH 2/2] Make is_mem_section_removable more
> conformable with offlining code"?  You mentioned sending an updated
> one, but I can't immediately find it.
>
Sorry, I couldn't. (and I will not able to do until Monday.)

> Also, please do describe the impact of the problems which are being
> fixed.  It helps me decide on priority and on
> which-kernels-need-the-patch and it helps others when deciding
> should-i-backport-this-into-my-kernel.
>
Ah,yes
  - Before the patch [2/2], the code is buggy but works.
    (Because of not-precise test of pre-memory-hotplug.)

    IOW, patch [2/2] is not buggy but make the bug  be apparent and
    evenryone will hit this.

    Influence is very small and maybe no need for backport.


> I think it'd be best to resend all of this, please.
>
I'll do in the next week. Sorry for annoying.

Thanks,
-Kame
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