From: Miaohe Lin <linmiaohe@huawei.com>
To: <akpm@linux-foundation.org>, <naoya.horiguchi@nec.com>
Cc: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
<linmiaohe@huawei.com>
Subject: [PATCH] mm/hwpoison-inject: support injecting hwpoison to free page
Date: Fri, 18 Feb 2022 17:20:52 +0800 [thread overview]
Message-ID: <20220218092052.3853-1-linmiaohe@huawei.com> (raw)
memory_failure() can handle free buddy page. Support injecting hwpoison
to free page by adding is_free_buddy_page check when hwpoison filter is
disabled.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/hwpoison-inject.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
index aff4d27ec235..f74552977649 100644
--- a/mm/hwpoison-inject.c
+++ b/mm/hwpoison-inject.c
@@ -32,9 +32,9 @@ static int hwpoison_inject(void *data, u64 val)
shake_page(hpage);
/*
- * This implies unable to support non-LRU pages.
+ * This implies unable to support non-LRU pages except free page.
*/
- if (!PageLRU(hpage) && !PageHuge(p))
+ if (!PageLRU(hpage) && !PageHuge(p) && !is_free_buddy_page(p))
return 0;
/*
--
2.23.0
reply other threads:[~2022-02-18 9:21 UTC|newest]
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