+ mm-make-folio_test_idle-and-folio_test_young-take-a-const-argument.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm: make folio_test_idle and folio_test_young take a const argument
has been added to the -mm mm-unstable branch.  Its filename is
     mm-make-folio_test_idle-and-folio_test_young-take-a-const-argument.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-make-folio_test_idle-and-folio_test_young-take-a-const-argument.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: mm: make folio_test_idle and folio_test_young take a const argument
Date: Tue, 26 Mar 2024 17:10:26 +0000

If these functions are defined in page-flags.h, they already take a const
argument; make it true for these alternate definitions too.

Link: https://lkml.kernel.org/r/20240326171045.410737-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/page_idle.h |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/include/linux/page_idle.h~mm-make-folio_test_idle-and-folio_test_young-take-a-const-argument
+++ a/include/linux/page_idle.h
@@ -13,7 +13,7 @@
  * If there is not enough space to store Idle and Young bits in page flags, use
  * page ext flags instead.
  */
-static inline bool folio_test_young(struct folio *folio)
+static inline bool folio_test_young(const struct folio *folio)
 {
 	struct page_ext *page_ext = page_ext_get(&folio->page);
 	bool page_young;
@@ -52,7 +52,7 @@ static inline bool folio_test_clear_youn
 	return page_young;
 }
 
-static inline bool folio_test_idle(struct folio *folio)
+static inline bool folio_test_idle(const struct folio *folio)
 {
 	struct page_ext *page_ext = page_ext_get(&folio->page);
 	bool page_idle;
@@ -60,7 +60,7 @@ static inline bool folio_test_idle(struc
 	if (unlikely(!page_ext))
 		return false;
 
-	page_idle =  test_bit(PAGE_EXT_IDLE, &page_ext->flags);
+	page_idle = test_bit(PAGE_EXT_IDLE, &page_ext->flags);
 	page_ext_put(page_ext);
 
 	return page_idle;
@@ -91,7 +91,7 @@ static inline void folio_clear_idle(stru
 
 #else /* !CONFIG_PAGE_IDLE_FLAG */
 
-static inline bool folio_test_young(struct folio *folio)
+static inline bool folio_test_young(const struct folio *folio)
 {
 	return false;
 }
@@ -105,7 +105,7 @@ static inline bool folio_test_clear_youn
 	return false;
 }
 
-static inline bool folio_test_idle(struct folio *folio)
+static inline bool folio_test_idle(const struct folio *folio)
 {
 	return false;
 }
_

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

mm-always-initialise-folio-_deferred_list.patch
mm-create-folio_flag_false-and-folio_type_ops-macros.patch
mm-remove-folio_prep_large_rmappable.patch
mm-support-page_mapcount-on-page_has_type-pages.patch
mm-turn-folio_test_hugetlb-into-a-pagetype.patch
mm-turn-folio_test_hugetlb-into-a-pagetype-fix.patch
mm-remove-a-call-to-compound_head-from-is_page_hwpoison.patch
mm-free-up-pg_slab.patch
mm-free-up-pg_slab-fix.patch
mm-improve-dumping-of-mapcount-and-page_type.patch
hugetlb-remove-mention-of-destructors.patch
sh-remove-use-of-pg_arch_1-on-individual-pages.patch
xtensa-remove-uses-of-pg_arch_1-on-individual-pages.patch
mm-make-page_ext_get-take-a-const-argument.patch
mm-make-folio_test_idle-and-folio_test_young-take-a-const-argument.patch
mm-make-is_free_buddy_page-take-a-const-argument.patch
mm-make-page_mapped-take-a-const-argument.patch
mm-convert-arch_clear_hugepage_flags-to-take-a-folio.patch
slub-remove-use-of-page-flags.patch
remove-references-to-page-flags-in-documentation.patch
proc-rewrite-stable_page_flags.patch