linux-kernel - Re: [PATCH v2 2/2] mm/memory-failure.c: Don't access uninitialized memmaps in memory

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Message-ID: <20191015142340.GA5686@linux>
Date:   Tue, 15 Oct 2019 16:23:44 +0200
From:   Oscar Salvador <osalvador@...e.de>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     David Hildenbrand <david@...hat.com>,
        Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Oscar Salvador <OSalvador@...e.com>
Subject: Re: [PATCH v2 2/2] mm/memory-failure.c: Don't access uninitialized
 memmaps in memory_failure()

On Mon, Oct 14, 2019 at 03:36:17PM +0200, Michal Hocko wrote:
> I do agree. The two should be really using the same code. My
> understanding was that MADV_HWPOISON was there to test the actual MCE
> behavior (and the man page seems to agree with that).
> 
> Oscar is working on a rewrite. Not sure he has considered this as well.

Yeah, I came across hwpoison-inject module when doing my re-write,
and I felt like this is begging for a clean up.

Since unpoison_memory needs some adjustments after my re-write, I will go ahead
and clean that up, otherwise it will be inconsistent.

I expect to be ready fo send the v2 by the end of this week.

Thanks
-- 
Oscar Salvador
SUSE L3