[merged mm-stable] mm-convert-set_compound_page_dtor-and-set_compound_order-to-folios.patch removed from -mm tree

[merged mm-stable] mm-convert-set_compound_page_dtor-and-set_compound_order-to-folios.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: convert set_compound_page_dtor() and set_compound_order() to folios
has been removed from the -mm tree.  Its filename was
     mm-convert-set_compound_page_dtor-and-set_compound_order-to-folios.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: mm: convert set_compound_page_dtor() and set_compound_order() to folios
Date: Wed, 11 Jan 2023 14:29:04 +0000

Replace uses of compound_dtor, compound_order and compound_nr by their
folio equivalents.

Link: https://lkml.kernel.org/r/20230111142915.1001531-19-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/include/linux/mm.h~mm-convert-set_compound_page_dtor-and-set_compound_order-to-folios
+++ a/include/linux/mm.h
@@ -984,8 +984,11 @@ extern compound_page_dtor * const compou
 static inline void set_compound_page_dtor(struct page *page,
 		enum compound_dtor_id compound_dtor)
 {
+	struct folio *folio = (struct folio *)page;
+
 	VM_BUG_ON_PAGE(compound_dtor >= NR_COMPOUND_DTORS, page);
-	page[1].compound_dtor = compound_dtor;
+	VM_BUG_ON_PAGE(!PageHead(page), page);
+	folio->_folio_dtor = compound_dtor;
 }
 
 static inline void folio_set_compound_dtor(struct folio *folio,
@@ -999,9 +1002,11 @@ void destroy_large_folio(struct folio *f
 
 static inline void set_compound_order(struct page *page, unsigned int order)
 {
-	page[1].compound_order = order;
+	struct folio *folio = (struct folio *)page;
+
+	folio->_folio_order = order;
 #ifdef CONFIG_64BIT
-	page[1].compound_nr = 1U << order;
+	folio->_folio_nr_pages = 1U << order;
 #endif
 }
 
_

Patches currently in -mm which might be from willy@infradead.org are