linux-kernel - Re: [PATCH v2] mm/hwpoison: reset hwpoison filter parameters in pfn_inject

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Message-ID: <Zpdx-smohyWI2nYV@tiehlicka>
Date: Wed, 17 Jul 2024 09:25:46 +0200
From: Michal Hocko <mhocko@...e.com>
To: Miaohe Lin <linmiaohe@...wei.com>
Cc: akpm@...ux-foundation.org, nao.horiguchi@...il.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm/hwpoison: reset hwpoison filter parameters in
 pfn_inject_exit()

On Wed 17-07-24 14:59:40, Miaohe Lin wrote:
> On 2024/7/17 14:18, Michal Hocko wrote:
[...]
> > Why does this need to be done through different modules? Why it cannot
> > be part of the memory-filure.c?
> 
> This is a bold idea for me. :) I think it can be part of the memory-filure.c.
> So CONFIG_HWPOISON_INJECT should be removed from the world and then make
> hwpoison-inject default on when MEMORY_FAILURE is configured?

I would start by moving code into mm/hwpoison-inject.c. Whether this
should also remove CONFIG_HWPOISON_INJECT is a different question. I
am not really sure a debugfs interface warrants a config option. Anyway
two things for two separate patches
-- 
Michal Hocko
SUSE Labs