From: Matthew Wilcox <willy@infradead.org>
To: Miaohe Lin <linmiaohe@huawei.com>
Cc: akpm@linux-foundation.org, naoya.horiguchi@nec.com,
shy828301@gmail.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/4] mm: memory-failure: avoid false hwpoison page mapped error info
Date: Sat, 15 Jul 2023 04:59:06 +0100 [thread overview]
Message-ID: <ZLIZil71OXXk8amg@casper.infradead.org> (raw)
In-Reply-To: <20230715031729.2420338-4-linmiaohe@huawei.com>
On Sat, Jul 15, 2023 at 11:17:28AM +0800, Miaohe Lin wrote:
> folio->_mapcount is overloaded in SLAB, so folio_mapped() has to be done
> after folio_test_slab() is checked. Otherwise slab folio might be treated
> as a mapped folio leading to false 'Someone maps the hwpoison page' error
> info.
>
> Fixes: 230ac719c500 ("mm/hwpoison: don't try to unpoison containment-failed pages")
> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
next prev parent reply other threads:[~2023-07-15 3:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-15 3:17 [PATCH 0/4] A few fixup and cleanup patches for memory-failure Miaohe Lin
2023-07-15 3:17 ` [PATCH 1/4] mm/swapfile: fix wrong swap entry type for hwpoisoned swapcache page Miaohe Lin
2023-07-15 3:50 ` Matthew Wilcox
2023-07-17 2:33 ` Miaohe Lin
2023-07-17 2:53 ` Matthew Wilcox
2023-07-17 5:55 ` Miaohe Lin
2023-07-23 2:23 ` Miaohe Lin
2023-07-15 3:17 ` [PATCH 2/4] mm: memory-failure: fix potential unexpected return value from unpoison_memory() Miaohe Lin
2023-07-19 23:48 ` Naoya Horiguchi
2023-07-20 8:44 ` Miaohe Lin
2023-07-15 3:17 ` [PATCH 3/4] mm: memory-failure: avoid false hwpoison page mapped error info Miaohe Lin
2023-07-15 3:59 ` Matthew Wilcox [this message]
2023-07-19 23:50 ` Naoya Horiguchi
2023-07-15 3:17 ` [PATCH 4/4] mm: memory-failure: add PageOffline() check Miaohe Lin
2023-07-20 1:09 ` Naoya Horiguchi
2023-07-20 8:42 ` Miaohe Lin
2023-07-20 23:55 ` Naoya Horiguchi
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