linux-kernel - [PATCH v3 04/13] mm/memory-failure: save some page

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Message-ID: <20240612071835.157004-5-linmiaohe@huawei.com>
Date: Wed, 12 Jun 2024 15:18:26 +0800
From: Miaohe Lin <linmiaohe@...wei.com>
To: <akpm@...ux-foundation.org>, <tony.luck@...el.com>, <bp@...en8.de>
CC: <nao.horiguchi@...il.com>, <linmiaohe@...wei.com>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>, <linux-edac@...r.kernel.org>
Subject: [PATCH v3 04/13] mm/memory-failure: save some page_folio() calls

Use local variable folio directly to save a page_folio() call. Also
use folio_mapped() to save more page_folio() calls. No functional
change intended.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
Reviewed-by: David Hildenbrand <david@...hat.com>
---
 mm/memory-failure.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 958b17a4b0f5..470c570d779c 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1575,7 +1575,7 @@ static bool hwpoison_user_mappings(struct folio *folio, struct page *p,
 	 * This check implies we don't kill processes if their pages
 	 * are in the swap cache early. Those are always late kills.
 	 */
-	if (!page_mapped(p))
+	if (!folio_mapped(folio))
 		return true;
 
 	if (folio_test_swapcache(folio)) {
@@ -1626,10 +1626,10 @@ static bool hwpoison_user_mappings(struct folio *folio, struct page *p,
 		try_to_unmap(folio, ttu);
 	}
 
-	unmap_success = !page_mapped(p);
+	unmap_success = !folio_mapped(folio);
 	if (!unmap_success)
 		pr_err("%#lx: failed to unmap page (folio mapcount=%d)\n",
-		       pfn, folio_mapcount(page_folio(p)));
+		       pfn, folio_mapcount(folio));
 
 	/*
 	 * try_to_unmap() might put mlocked page in lru cache, so call
-- 
2.33.0