linux-kernel - [PATCH v1 12/39] mm/rmap: remove page_add_file

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Date:   Mon, 11 Dec 2023 16:56:25 +0100
From:   David Hildenbrand <david@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, David Hildenbrand <david@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Hugh Dickins <hughd@...gle.com>,
        Ryan Roberts <ryan.roberts@....com>,
        Yin Fengwei <fengwei.yin@...el.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Muchun Song <muchun.song@...ux.dev>,
        Peter Xu <peterx@...hat.com>
Subject: [PATCH v1 12/39] mm/rmap: remove page_add_file_rmap()

All users are gone, let's remove it.

Reviewed-by: Yin Fengwei <fengwei.yin@...el.com>
Signed-off-by: David Hildenbrand <david@...hat.com>
---
 include/linux/rmap.h |  2 --
 mm/rmap.c            | 21 ---------------------
 2 files changed, 23 deletions(-)

diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index 1753900f4aed..7198905dc8be 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -240,8 +240,6 @@ void page_add_new_anon_rmap(struct page *, struct vm_area_struct *,
 		unsigned long address);
 void folio_add_new_anon_rmap(struct folio *, struct vm_area_struct *,
 		unsigned long address);
-void page_add_file_rmap(struct page *, struct vm_area_struct *,
-		bool compound);
 void folio_add_file_rmap_ptes(struct folio *, struct page *, int nr_pages,
 		struct vm_area_struct *);
 #define folio_add_file_rmap_pte(folio, page, vma) \
diff --git a/mm/rmap.c b/mm/rmap.c
index 4f30930a1162..2ff2f11275e5 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1467,27 +1467,6 @@ void folio_add_file_rmap_pmd(struct folio *folio, struct page *page,
 #endif
 }
 
-/**
- * page_add_file_rmap - add pte mapping to a file page
- * @page:	the page to add the mapping to
- * @vma:	the vm area in which the mapping is added
- * @compound:	charge the page as compound or small page
- *
- * The caller needs to hold the pte lock.
- */
-void page_add_file_rmap(struct page *page, struct vm_area_struct *vma,
-		bool compound)
-{
-	struct folio *folio = page_folio(page);
-
-	VM_WARN_ON_ONCE_PAGE(compound && !PageTransHuge(page), page);
-
-	if (likely(!compound))
-		folio_add_file_rmap_pte(folio, page, vma);
-	else
-		folio_add_file_rmap_pmd(folio, page, vma);
-}
-
 /**
  * page_remove_rmap - take down pte mapping from a page
  * @page:	page to remove mapping from
-- 
2.43.0