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Date: Mon, 12 Jul 2021 04:05:40 +0100
From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
To: linux-kernel@...r.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>,
linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
Vlastimil Babka <vbabka@...e.cz>,
William Kucharski <william.kucharski@...cle.com>,
Christoph Hellwig <hch@....de>
Subject: [PATCH v13 056/137] mm: Add folio_young() and folio_idle()
Idle page tracking is handled through page_ext on 32-bit architectures.
Add folio equivalents for 32-bit and move all the page compatibility
parts to common code.
Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Acked-by: Vlastimil Babka <vbabka@...e.cz>
Reviewed-by: William Kucharski <william.kucharski@...cle.com>
Reviewed-by: Christoph Hellwig <hch@....de>
---
include/linux/page_idle.h | 99 +++++++++++++++++++--------------------
1 file changed, 49 insertions(+), 50 deletions(-)
diff --git a/include/linux/page_idle.h b/include/linux/page_idle.h
index 1e894d34bdce..bd957e818558 100644
--- a/include/linux/page_idle.h
+++ b/include/linux/page_idle.h
@@ -8,46 +8,16 @@
#ifdef CONFIG_IDLE_PAGE_TRACKING
-#ifdef CONFIG_64BIT
-static inline bool page_is_young(struct page *page)
-{
- return PageYoung(page);
-}
-
-static inline void set_page_young(struct page *page)
-{
- SetPageYoung(page);
-}
-
-static inline bool test_and_clear_page_young(struct page *page)
-{
- return TestClearPageYoung(page);
-}
-
-static inline bool page_is_idle(struct page *page)
-{
- return PageIdle(page);
-}
-
-static inline void set_page_idle(struct page *page)
-{
- SetPageIdle(page);
-}
-
-static inline void clear_page_idle(struct page *page)
-{
- ClearPageIdle(page);
-}
-#else /* !CONFIG_64BIT */
+#ifndef CONFIG_64BIT
/*
* If there is not enough space to store Idle and Young bits in page flags, use
* page ext flags instead.
*/
extern struct page_ext_operations page_idle_ops;
-static inline bool page_is_young(struct page *page)
+static inline bool folio_young(struct folio *folio)
{
- struct page_ext *page_ext = lookup_page_ext(page);
+ struct page_ext *page_ext = lookup_page_ext(&folio->page);
if (unlikely(!page_ext))
return false;
@@ -55,9 +25,9 @@ static inline bool page_is_young(struct page *page)
return test_bit(PAGE_EXT_YOUNG, &page_ext->flags);
}
-static inline void set_page_young(struct page *page)
+static inline void folio_set_young_flag(struct folio *folio)
{
- struct page_ext *page_ext = lookup_page_ext(page);
+ struct page_ext *page_ext = lookup_page_ext(&folio->page);
if (unlikely(!page_ext))
return;
@@ -65,9 +35,9 @@ static inline void set_page_young(struct page *page)
set_bit(PAGE_EXT_YOUNG, &page_ext->flags);
}
-static inline bool test_and_clear_page_young(struct page *page)
+static inline bool folio_test_clear_young_flag(struct folio *folio)
{
- struct page_ext *page_ext = lookup_page_ext(page);
+ struct page_ext *page_ext = lookup_page_ext(&folio->page);
if (unlikely(!page_ext))
return false;
@@ -75,9 +45,9 @@ static inline bool test_and_clear_page_young(struct page *page)
return test_and_clear_bit(PAGE_EXT_YOUNG, &page_ext->flags);
}
-static inline bool page_is_idle(struct page *page)
+static inline bool folio_idle(struct folio *folio)
{
- struct page_ext *page_ext = lookup_page_ext(page);
+ struct page_ext *page_ext = lookup_page_ext(&folio->page);
if (unlikely(!page_ext))
return false;
@@ -85,9 +55,9 @@ static inline bool page_is_idle(struct page *page)
return test_bit(PAGE_EXT_IDLE, &page_ext->flags);
}
-static inline void set_page_idle(struct page *page)
+static inline void folio_set_idle_flag(struct folio *folio)
{
- struct page_ext *page_ext = lookup_page_ext(page);
+ struct page_ext *page_ext = lookup_page_ext(&folio->page);
if (unlikely(!page_ext))
return;
@@ -95,46 +65,75 @@ static inline void set_page_idle(struct page *page)
set_bit(PAGE_EXT_IDLE, &page_ext->flags);
}
-static inline void clear_page_idle(struct page *page)
+static inline void folio_clear_idle_flag(struct folio *folio)
{
- struct page_ext *page_ext = lookup_page_ext(page);
+ struct page_ext *page_ext = lookup_page_ext(&folio->page);
if (unlikely(!page_ext))
return;
clear_bit(PAGE_EXT_IDLE, &page_ext->flags);
}
-#endif /* CONFIG_64BIT */
+#endif /* !CONFIG_64BIT */
#else /* !CONFIG_IDLE_PAGE_TRACKING */
-static inline bool page_is_young(struct page *page)
+static inline bool folio_young(struct folio *folio)
{
return false;
}
-static inline void set_page_young(struct page *page)
+static inline void folio_set_young_flag(struct folio *folio)
{
}
-static inline bool test_and_clear_page_young(struct page *page)
+static inline bool folio_test_clear_young_flag(struct folio *folio)
{
return false;
}
-static inline bool page_is_idle(struct page *page)
+static inline bool folio_idle(struct folio *folio)
{
return false;
}
-static inline void set_page_idle(struct page *page)
+static inline void folio_set_idle_flag(struct folio *folio)
{
}
-static inline void clear_page_idle(struct page *page)
+static inline void folio_clear_idle_flag(struct folio *folio)
{
}
#endif /* CONFIG_IDLE_PAGE_TRACKING */
+static inline bool page_is_young(struct page *page)
+{
+ return folio_young(page_folio(page));
+}
+
+static inline void set_page_young(struct page *page)
+{
+ folio_set_young_flag(page_folio(page));
+}
+
+static inline bool test_and_clear_page_young(struct page *page)
+{
+ return folio_test_clear_young_flag(page_folio(page));
+}
+
+static inline bool page_is_idle(struct page *page)
+{
+ return folio_idle(page_folio(page));
+}
+
+static inline void set_page_idle(struct page *page)
+{
+ folio_set_idle_flag(page_folio(page));
+}
+
+static inline void clear_page_idle(struct page *page)
+{
+ folio_clear_idle_flag(page_folio(page));
+}
#endif /* _LINUX_MM_PAGE_IDLE_H */
--
2.30.2
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