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From:   Naoya Horiguchi <naoya.horiguchi@linux.dev>
To:     Yang Shi <shy828301@gmail.com>
Cc:     Linux MM <linux-mm@kvack.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        David Hildenbrand <david@redhat.com>,
        Oscar Salvador <osalvador@suse.de>,
        Michal Hocko <mhocko@suse.com>,
        Ding Hui <dinghui@sangfor.com.cn>,
        Tony Luck <tony.luck@intel.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
        Miaohe Lin <linmiaohe@huawei.com>,
        Peter Xu <peterx@redhat.com>,
        Naoya Horiguchi <naoya.horiguchi@nec.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 2/4] mm/hwpoison: remove race consideration
Message-ID: <20211027011807.GA2707645@u2004>
References: <20211025230503.2650970-1-naoya.horiguchi@linux.dev>
 <20211025230503.2650970-3-naoya.horiguchi@linux.dev>
 <CAHbLzkrUb4YcnuXY9MYs+afRCFSfNdTmJAYyqHPxnqrEdFehhA@mail.gmail.com>
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On Tue, Oct 26, 2021 at 06:04:13PM -0700, Yang Shi wrote:
> On Mon, Oct 25, 2021 at 4:06 PM Naoya Horiguchi
> <naoya.horiguchi@linux.dev> wrote:
> >
> > From: Naoya Horiguchi <naoya.horiguchi@nec.com>
> >
> > Now memory_failure() and unpoison_memory() are protected by mf_mutex,
> > so no need to explicitly check races between them.  So remove them.
> 
> It seems this patch could be folded into patch #1. Some "unlock_mutex"
> were added by patch #1 then they were removed by this patch
> immediately, it seems a bit of a waste and this patch is actually the
> by-product of patch #1.

OK, I'll do this in the next post.

Thanks,
Naoya Horiguchi