linux-kernel - Re: [PATCH v1] mm, hwpoison: enable error handling on shmem thp

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Date:   Wed, 10 Feb 2021 08:51:33 +0900
From:   Naoya Horiguchi <nao.horiguchi@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, Michal Hocko <mhocko@...nel.org>,
        Oscar Salvador <osalvador@...e.de>,
        Tony Luck <tony.luck@...el.com>,
        Matthew Wilcox <willy@...radead.org>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Naoya Horiguchi <naoya.horiguchi@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] mm, hwpoison: enable error handling on shmem thp

On Tue, Feb 09, 2021 at 11:46:40AM -0800, Andrew Morton wrote:
> On Tue,  9 Feb 2021 15:21:28 +0900 Naoya Horiguchi <nao.horiguchi@...il.com> wrote:
> 
> > Currently hwpoison code checks PageAnon() for thp and refuses to handle
> > errors on non-anonymous thps (just for historical reason).  We now
> > support non-anonymou thp like shmem one, so this patch suggests to enable
> > to handle shmem thps. Fortunately, we already have can_split_huge_page()
> > to check if a give thp is splittable, so this patch relies on it.
> 
> Thanks.  We're at -rc7 so I think I'll park this one for 5.12-rc1,
> unless it is more urgent than I believe it to be?

This patch is not so urgent, so I'm fine to make this targeted at 5.12-rc1.

Thanks,
Naoya Horiguchi