linux-kernel - [PATCH 4/4] mm: memory-failure: add PageOffline() check

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Date:   Sat, 15 Jul 2023 11:17:29 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <naoya.horiguchi@....com>
CC:     <shy828301@...il.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH 4/4] mm: memory-failure: add PageOffline() check

Memory failure is not interested in logically offlined page. Skip this
type of pages.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/memory-failure.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 42e63b0ab5f7..ed79b69837de 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1559,7 +1559,7 @@ 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) || PageTable(p))
+	if (PageReserved(p) || PageSlab(p) || PageTable(p) || PageOffline(p))
 		return true;
 	if (!(PageLRU(hpage) || PageHuge(p)))
 		return true;
@@ -2513,7 +2513,8 @@ int unpoison_memory(unsigned long pfn)
 		goto unlock_mutex;
 	}
 
-	if (folio_test_slab(folio) || PageTable(&folio->page) || folio_test_reserved(folio))
+	if (folio_test_slab(folio) || PageTable(&folio->page) ||
+	    folio_test_reserved(folio) || PageOffline(&folio->page))
 		goto unlock_mutex;
 
 	/*
-- 
2.33.0