linux-kernel - [PATCH v3 14/14] mm/ksm: remove set_page_stable

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Date: Mon, 25 Mar 2024 20:49:01 +0800
From: alexs@...nel.org
To: Matthew Wilcox <willy@...radead.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Izik Eidus <izik.eidus@...ellosystems.com>,
	david@...hat.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	ryncsn@...il.com
Cc: "Alex Shi (tencent)" <alexs@...nel.org>,
	Hugh Dickins <hughd@...gle.com>,
	Chris Wright <chrisw@...s-sol.org>
Subject: [PATCH v3 14/14] mm/ksm: remove set_page_stable_node

From: "Alex Shi (tencent)" <alexs@...nel.org>

Remove the func since all caller are gone. Also remove the
VM_BUG_ON_PAGE() because it's not applicable for a folio.

Signed-off-by: Alex Shi (tencent) <alexs@...nel.org>
To: linux-kernel@...r.kernel.org
To: linux-mm@...ck.org
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Izik Eidus <izik.eidus@...ellosystems.com>
Cc: Matthew Wilcox <willy@...radead.org>
Cc: Andrea Arcangeli <aarcange@...hat.com>
Cc: Hugh Dickins <hughd@...gle.com>
Cc: Chris Wright <chrisw@...s-sol.org>
---
 mm/ksm.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/mm/ksm.c b/mm/ksm.c
index d7c4cc4a0cc1..136909f0c5d5 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1094,17 +1094,10 @@ static inline struct ksm_stable_node *page_stable_node(struct page *page)
 	return folio_stable_node(page_folio(page));
 }
 
-static inline void set_page_stable_node(struct page *page,
-					struct ksm_stable_node *stable_node)
-{
-	VM_BUG_ON_PAGE(PageAnon(page) && PageAnonExclusive(page), page);
-	page->mapping = (void *)((unsigned long)stable_node | PAGE_MAPPING_KSM);
-}
-
 static inline void folio_set_stable_node(struct folio *folio,
 					 struct ksm_stable_node *stable_node)
 {
-	set_page_stable_node(&folio->page, stable_node);
+	folio->mapping = (void *)((unsigned long)stable_node | PAGE_MAPPING_KSM);
 }
 
 #ifdef CONFIG_SYSFS
-- 
2.43.0