linux-kernel - [PATCH 5/6] mm, hwpoison: check PageTable() explicitly in hwpoison_user

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Date:   Tue, 30 Aug 2022 20:36:03 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <naoya.horiguchi@....com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 5/6] mm, hwpoison: check PageTable() explicitly in hwpoison_user_mappings()

PageTable can't be handled by memory_failure(). Filter it out explicitly in
hwpoison_user_mappings(). This will also make code more consistent with the
relevant check in unpoison_memory().

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/memory-failure.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 904c2b6284a4..fb6a10005109 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1406,7 +1406,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
 	 * Here we are interested only in user-mapped pages, so skip any
 	 * other types of pages.
 	 */
-	if (PageReserved(p) || PageSlab(p))
+	if (PageReserved(p) || PageSlab(p) || PageTable(p))
 		return true;
 	if (!(PageLRU(hpage) || PageHuge(p)))
 		return true;
-- 
2.23.0