mm: make folio_test_idle and folio_test_young take a const argument

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>

diff --git a/include/linux/page_idle.h b/include/linux/page_idle.h
index d8f34484064302e47d89ae9f487936299ee97d7c..511e22ef459fc916694fef928e24762ebc925a01 100644 (file)
--- a/include/linux/page_idle.h
+++ b/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_young(struct folio *folio)
        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(struct folio *folio)
        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(struct folio *folio)
 
 #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_young(struct folio *folio)
        return false;
 }
 
-static inline bool folio_test_idle(struct folio *folio)
+static inline bool folio_test_idle(const struct folio *folio)
 {
        return false;
 }