linux-kernel - [PATCH v3 5/8] mm/memory-failure.c: remove PageSlab check in hwpoison_filter

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Message-ID: <20220218090118.1105-6-linmiaohe@huawei.com>
Date:   Fri, 18 Feb 2022 17:01:15 +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 v3 5/8] mm/memory-failure.c: remove PageSlab check in hwpoison_filter_dev

Since commit 03e5ac2fc3bf ("mm: fix crash when using XFS on loopback"),
page_mapping() can handle the Slab pages. So remove this unnecessary
PageSlab check and obsolete comment.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@....com>
---
 mm/memory-failure.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 2ca50cfa601f..a6f6fdf708ae 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -130,12 +130,6 @@ static int hwpoison_filter_dev(struct page *p)
 	    hwpoison_filter_dev_minor == ~0U)
 		return 0;
 
-	/*
-	 * page_mapping() does not accept slab pages.
-	 */
-	if (PageSlab(p))
-		return -EINVAL;
-
 	mapping = page_mapping(p);
 	if (mapping == NULL || mapping->host == NULL)
 		return -EINVAL;
-- 
2.23.0