diff mbox series

[v2,10/46] mm/rmap: Add folio_mkclean()

Message ID 20210622121551.3398730-11-willy@infradead.org (mailing list archive)
State New
Headers show
Series Folio-enabling the page cache | expand

Commit Message

Matthew Wilcox June 22, 2021, 12:15 p.m. UTC 
Transform page_mkclean() into folio_mkclean() and add a page_mkclean()
wrapper around folio_mkclean().

folio_mkclean is 15 bytes smaller than page_mkclean, but the kernel
is enlarged by 33 bytes due to inlining page_folio() into each caller.
This will go away once the callers are converted to use folio_mkclean().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 include/linux/rmap.h | 10 ++++++----
 mm/rmap.c            | 12 ++++++------
 2 files changed, 12 insertions(+), 10 deletions(-)

Comments

Christoph Hellwig June 23, 2021, 8:08 a.m. UTC | #1 
On Tue, Jun 22, 2021 at 01:15:15PM +0100, Matthew Wilcox (Oracle) wrote:
> Transform page_mkclean() into folio_mkclean() and add a page_mkclean()
> wrapper around folio_mkclean().
> 
> folio_mkclean is 15 bytes smaller than page_mkclean, but the kernel
> is enlarged by 33 bytes due to inlining page_folio() into each caller.
> This will go away once the callers are converted to use folio_mkclean().
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index def5c62c93b3..edb006bc4159 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -233,7 +233,7 @@  unsigned long page_address_in_vma(struct page *, struct vm_area_struct *);
  *
  * returns the number of cleaned PTEs.
  */
-int page_mkclean(struct page *);
+int folio_mkclean(struct folio *);
 
 /*
  * called in munlock()/munmap() path to check for other vmas holding
@@ -291,12 +291,14 @@  static inline int page_referenced(struct page *page, int is_locked,
 
 #define try_to_unmap(page, refs) false
 
-static inline int page_mkclean(struct page *page)
+static inline int folio_mkclean(struct folio *folio)
 {
 	return 0;
 }
-
-
 #endif	/* CONFIG_MMU */
 
+static inline int page_mkclean(struct page *page)
+{
+	return folio_mkclean(page_folio(page));
+}
 #endif	/* _LINUX_RMAP_H */
diff --git a/mm/rmap.c b/mm/rmap.c
index 693a610e181d..e29dbbc880d7 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -983,7 +983,7 @@  static bool invalid_mkclean_vma(struct vm_area_struct *vma, void *arg)
 	return true;
 }
 
-int page_mkclean(struct page *page)
+int folio_mkclean(struct folio *folio)
 {
 	int cleaned = 0;
 	struct address_space *mapping;
@@ -993,20 +993,20 @@  int page_mkclean(struct page *page)
 		.invalid_vma = invalid_mkclean_vma,
 	};
 
-	BUG_ON(!PageLocked(page));
+	BUG_ON(!folio_locked(folio));
 
-	if (!page_mapped(page))
+	if (!folio_mapped(folio))
 		return 0;
 
-	mapping = page_mapping(page);
+	mapping = folio_mapping(folio);
 	if (!mapping)
 		return 0;
 
-	rmap_walk(page, &rwc);
+	rmap_walk(&folio->page, &rwc);
 
 	return cleaned;
 }
-EXPORT_SYMBOL_GPL(page_mkclean);
+EXPORT_SYMBOL_GPL(folio_mkclean);
 
 /**
  * page_move_anon_rmap - move a page to our anon_vma